Greasy Fork is available in English.

[RED/OPS/NWCD] Upload Assistant

Accurate filling of new upload/request and group/request edit forms based on foobar2000's playlist selection or web link, offline and online release integrity check, tracklist format customization, featured artists extraction, classical works formatting, cover art fetching from store, checking for previous upload, form enhancements and more

// ==UserScript==
// @name         [RED/OPS/NWCD] Upload Assistant
// @namespace    https://greasyfork.org/users/321857-anakunda
// @version      1.335
// @description  Accurate filling of new upload/request and group/request edit forms based on foobar2000's playlist selection or web link, offline and online release integrity check, tracklist format customization, featured artists extraction, classical works formatting, cover art fetching from store, checking for previous upload, form enhancements and more
// @author       Anakunda
// @copyright    2019, Anakunda (https://greasyfork.org/users/321857-anakunda)
// @license      GPL-3.0-or-later
// @iconURL      https://redacted.ch/favicon.ico
// @match        https://redacted.ch/upload.php*
// @match        https://redacted.ch/torrents.php?action=editgroup&*
// @match        https://redacted.ch/torrents.php?action=edit&*
// @match        https://redacted.ch/requests.php?action=new*
// @match        https://redacted.ch/requests.php?action=edit*
// @match        https://notwhat.cd/upload.php*
// @match        https://notwhat.cd/torrents.php?action=editgroup&*
// @match        https://notwhat.cd/torrents.php?action=edit&*
// @match        https://notwhat.cd/requests.php?action=new*
// @match        https://notwhat.cd/requests.php?action=edit*
// @match        https://orpheus.network/upload.php*
// @match        https://orpheus.network/torrents.php?action=editgroup&*
// @match        https://orpheus.network/torrents.php?action=edit&*
// @match        https://orpheus.network/requests.php?action=new*
// @match        https://orpheus.network/requests.php?action=edit*
// @connect      file://*
// @connect      *
// @grant        GM_xmlhttpRequest
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_deleteValue
// @grant        GM_openInTab
// @require      https://greasyfork.org/scripts/408084-xhrlib/code/xhrLib.js
// @require      https://greasyfork.org/scripts/406257-qobuzlib/code/QobuzLib.js
// @require      https://greasyfork.org/scripts/401726-imagehostuploader/code/imageHostUploader.js
// @require      https://greasyfork.org/scripts/404516-progressbars/code/progressBars.js
// @require      https://greasyfork.org/scripts/408277-libstringdistance/code/libStringDistance.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/crypto-js.min.js
// @require      https://greasyfork.org/scripts/406786-langcodes/code/langCodes.js
// ==/UserScript==

// Additional setup: to work, set the pattern below as built-in foobar2000 copy command or custom Text Tools plugin quick copy command
//   $replace($replace([%album artist%]$char(30)[%album%]$char(30)[$if3(%date%,%ORIGINAL RELEASE DATE%,%year%)]$char(30)[$if3(%releasedate%,%retail date%,%date%,%year%)]$char(30)[$if2(%label%,%publisher%)]$char(30)[$if3(%catalog%,%CATALOGNUMBER%,%CATALOG NUMBER%,%labelno%,%catalog #%,%SKU%)]$char(30)[%country%]$char(30)%__encoding%$char(30)%__codec%$char(30)[%__codec_profile%]$char(30)[%__bitrate%]$char(30)[%__bitspersample%]$char(30)[%__samplerate%]$char(30)[%__channels%]$char(30)[%__channel_mode%]$char(30)[$if3(%media%,%format%,%source%,%MEDIATYPE%,%SOURCEMEDIA%,%discogs_format%)]$char(30)[%genre%[|%style%]]$char(30)[%discnumber%]$char(30)[$if2(%totaldiscs%,%disctotal%)]$char(30)[%discsubtitle%]$char(30)[%track number%]$char(30)[$if2(%totaltracks%,%TRACKTOTAL%)]$char(30)[%title%]$char(30)[%track artist%]$char(30)[$if($strcmp(%performer%,%artist%),,%performer%)]$char(30)[$if3(%composer%,%writer%,%SONGWRITER%,%author%,%LYRICIST%)]$char(30)[%conductor%]$char(30)[%remixer%]$char(30)[$if2(%compiler%,%mixer%)]$char(30)[$if2(%producer%,%producedby%)]$char(30)[%length_seconds_fp%]$char(30)[%length_samples%]$char(30)[%filesize%]$char(30)[%replaygain_album_gain%]$char(30)[%replaygain_album_peak%]$char(30)[%replaygain_track_gain%]$char(30)[%replaygain_track_peak%]$char(30)[%album dynamic range%]$char(30)[%dynamic range%]$char(30)[%__tool%][ | $if2(%MQAENCODER%,%ENCODER%)][ | %ENCODER_OPTIONS%]$char(30)[$if2(%url%,%www%)]$char(30)[$directory_path(%path%)]$char(30)[$if2(%comment%,%description%)]$char(30)$trim([BARCODE=$trim($replace($if3(%barcode%,%UPC%,%EAN%,%MCN%), ,)) ][DISCID=$trim(%DISCID%) ][ASIN=$trim(%ASIN%) ][ISRC=$trim(%ISRC%) ][ISWC=$trim(%ISWC%) ][DISCOGS_ID=$trim(%discogs_release_id%) ][MBID=$trim(%MUSICBRAINZ_ALBUMID%) ][ACCURATERIPCRC=$trim(%ACCURATERIPCRC%) ][ACCURATERIPDISCID=$trim(%ACCURATERIPDISCID%) ][ACCURATERIPID=$trim(%ACCURATERIPID%) ][SOURCEID=$trim($replace(%SOURCEID%, ,_)) ][CT_TOC=$trim(%CDTOC%) ][ITUNES_TOC=$trim(%ITUNES_CDDB_1%) ][RELEASETYPE=$replace($if2(%RELEASETYPE%,%RELEASE TYPE%), ,_) ][COMPILATION=$trim(%compilation%) ][EXPLICIT=$trim(%EXPLICIT%) ]SCENE=$if($and(%ENCODER%,%LANGUAGE%,%MEDIA%,%PUBLISHER%,%RELEASE TYPE%,%RETAIL DATE%,%RIP DATE%,%RIPPING TOOL%),1,0) [LANGUAGE=$trim($replace(%LANGUAGE%, ,_)) ][ORIGINALFORMAT=$trim($replace(%ORIGINALFORMAT%, ,_)) ][BPM=$trim(%BPM%) ][MD5=$info(md5)])$char(30)[%lyrics%],$char(13),$char(29)),$char(10),$char(28))
//
// As alternative to pasted playlist, e.g. requests creation, valid URL to page on supported web can be used.
// List of supported domains:
//
// For music releases:
// - qobuz.com
// - highresaudio.com
// - bandcamp.com
// - prestomusic.com
// - discogs.com
// - supraphonline.cz
// - bontonland.cz (closing soon)
// - nativedsd.com
// - junodownload.com
// - hdtracks.com
// - deezer.com
// - spotify.com
// - prostudiomasters.com
// - play.google.com (music)
// - 7digital.com
// - e-onkyo.com
// - acousticsounds.com
// - indies.eu
// - beatport.com
// - traxsource.com
// - musicbrainz.org
// - music.apple.com
// - vgmdb.net
// - tidal.com (requires account)
// - ototoy.jp
// - music.yandex.ru
// - mora.jp
// - allmusic.com
// - bleep.com
// - boomkat.com
// - ecmrecords.com
// - actmusic.com
// - jpc.de
// - store.pias.com
// - dominomusic.com
// - kompakt.fm
// - eclassical.com
// - qq.com
// - muziekweb.nl
// - beatsource.com
// - music.163.com
//
// For e-bbook releases:
// - martinus.cz, martinus.sk
// - goodreads.com
// - databazeknih.cz
// - boomkat.com
// - openlibrary.org
// - books.google.com
// - play.google.com (books)
//
// For application releases:
// - sanet.st

'use strict';

const isFirefox = /\b(?:Firefox)\b/.test(navigator.userAgent) || Boolean(window.InstallTrigger);

function testDomain(domain) {
  return document.location.hostname.toLowerCase() == domain.toLowerCase();
}
function testPath(path, query) {
  return document.location.pathname.toLowerCase() == `/${path.toLowerCase()}.php`
  	&& (!query || document.location.search.toLowerCase().startsWith('?' + query.toLowerCase()));
}

const isRED = testDomain('redacted.ch');
const isNWCD = testDomain('notwhat.cd');
const isOPS = testDomain('orpheus.network');

const isUpload = testPath('upload');
const isEdit = testPath('torrents', 'action=editgroup&');
const isTorrentEdit = testPath('torrents', 'action=edit&');
const isRequestNew = testPath('requests', 'action=new');
const isRequestEdit = testPath('requests', 'action=edit&');
const isAddFormat = isUpload && /\b(?:groupid)=(\d+)\b/i.test(document.location.search);

const dcRlsParser = /^(?:https?):\/\/(?:\w+\.)*discogs\.com\/releases?\/(\d+)(?=$|\/|\?)/i;
const itunesRlsParser = /^(?:https?):\/\/(?:\w+\.)*apple\.com\/.*\/(\d+)(?=$|\?)/i;
const mbrRlsParser = /^(?:https?):\/\/(?:beta\.)?musicbrainz\.org\/(?:\w+\/)*release\/([\w\-]+)/i;
const dzrRlsParser = /^(?:https?):\/\/(?:\w+\.)*deezer\.com\/(\w+\/)*album\/(\d+)$/i;
const hyphenCoupling = /[\w\(\)\[\]\{\}]-\s/;
const imageExtensions = ['jpg', 'jpeg', 'jfif', 'png', 'gif', 'bmp', 'webp', 'tif', 'tiff', 'heic'];
const mbrRlsPrefix = 'https://musicbrainz.org/release/';
const discogsOrigin = 'https://www.discogs.com';
const deezerAlbumPrefix = 'https://www.deezer.com/album/';
const descriptionFields = ['album_desc', 'body', 'description', 'release_desc', 'release_lineage'];
const siteApiTimeframeStorageKey = document.location.hostname + ' API time frame';

const spotify_clientid = '6d358a207c634b1ebac640149a6090da';
const spotify_clientsecret = '4c59880a4ec241ed9c89a24e66468c64';
const discogs_key = 'OrFLNXqtEcdKLEicmywE';
const discogs_secret = 'mveXGdQOjbhPuLXEajOzrwRgQPpRFlUc';
//const discogs_token = '';
const lastfm_api_key = 'b9f26370d7266fbb3151b2ad4f7a74c9';
const gazelleApiFrameReserve = 500; // reserve that amount of ms for service operations
const ctxt = document.createElement('canvas').getContext('2d');

var prefs = {
  autfill_delay: 500, // delay in ms to autofill form after pasting text into box, 0 to disable
  clean_on_apply: false, // clean the input box on successfull fill
  cleanup_descriptions: true, // pre-submit cleanup to all description fields (remove empty placeholders, redundant info and garbage like empty tag pairs etc.)
  fix_capitalization: true, // properly fix capitalization (turn off if improperly capitalizing non-english titles)
  keep_meaningles_composers: false, // keep composers from file tags also for non-composer emphasing genres
  include_all_performers: false, // include to album guests all named performers
  default_medium: '', // preset this media type if it can't be deduced from metadata (Gazelle-compatible names as they appear in dropdown, empty string to not use)
  single_threshold: 10 * 60, // For autodetection of release type: max length of single in s
  EP_threshold: 30 * 60, // For autodetection of release type: max time of EP in s
  anthology_threshold: 120 * 60, // For autodetection of release type: threshold time in s to consider single artist release anthology
  auto_rehost_cover: true, // PTPimg / using 3rd party script
  auto_preview_cover: true,
  image_size_warning: 2048, // threshold in KiB for making cover size warning // 0 to disable
  image_size_reduce_threshold: 2048, // threshold in KiB for attempt to reduce cover size // 0 to disable
  cover_lookup_providers: 'all', // itunes/lastfm/deezer/musicbrainz/qobuz/google/tidal/discogs in specific order or 'all' for all | empty for no lookup
  //metadata_lookup_providers: 'all',
  fetch_tags_from_artist: 0, // add N most used tags from release artist (if one) - experimental/may inject nonsense tags for coinciding artists; 0 for disable
  estimate_decade_tag: true, // deduce decade tag (1980s, etc.) from album year for regular albums
  check_whitespace: true, // check tags for leading/trailing spaces and unreadable characters
  assume_rg: true, // do a reminder on missing RG info; on by default
  assume_dr: false, // do a reminder on missing DR info (only for Hi-Res tracks); off by default
  assume_weblink: false, // do a reminder on missing source URL (tag URL); off by default
  ops_always_edition: true, // (only new uploads) don't use original release but always specific edition (unify with other trackers)
  sacd_decoder: 'foobar2000\'s SACD decoder (DSD2PCM direct / 64fp / 30kHz lowpass)',
  use_store_logos: false, // use online source's pictograsm instead of url in textual form (if defined)
  insert_release_date: true, // ..to rls description
  selfrelease_label: 'self-released',
  upcoming_tags: '', // add this tag(s) to upcoming releases (requests); empty to disable
  remap_texttools_newlines: false, // convert underscores to linebreaks (ambiguous)
  messages_verbosity: 0,
  find_relations: true, // notify about existing torrents and requests of the same release
  relations_check_interval: 0, // check for relations periodically after intervals in seconds / 0 = OFF
  check_logs: true, // search site log for deleted uploads of the same release / not working on Orpheus
  // online parsers specific
  apple_offer_alt_cover: true, // usually smaller version of preloaded cover
  use_kana: false, // include Kana(JP) version in artist/title names; applies to mora.jp online parser
  // online service credentials
  redacted_api_key: '',
  //soundcloud_clientid: '',
  tidal_userid: '',
  tidal_userpassword: '',
  // request specific
  request_default_bounty: 0, // set this bounty in MB after successfull fill of request form / 0 for disable
  always_request_perfect_flac: false,
  include_tracklist_in_request: false, // false: include one line summary only; true: include full tracklisting
  // tracklist specific
  tracklist_style: 1, // 1: classic with components colouring, 2: propertional font right-justified, 3: classic center aligned
  colorless_tracklist: false, // Strip all colours from tracklist
  sort_tracklist: true,
  singles_conventional_format: false, // force one track singles to be formatted same way as albums with numbered tracklist
  reformat_trackartist: true, // (if track artist differs from main artist) rebuild track artist from partial track artists, turn off if generating wrong track artists
  tracklist_size: 2, // PHPBB font size
  max_tracklist_width: 80, // right margin of the right aligned tracklist. should not exceed the group description width on any device
  title_separator: '. ', // divisor of track# and title
  pad_leader: ' ',
  bpm_summary: true,
  tracklist_head_color: '#778899', // #4682B4 / #a7bdd0
  // classical tracklist only components colouring
  tracklist_disctitle_color: '#2bb7b7', // #bb831c
  tracklist_work_color: '#808000', // #b16890
  tracklist_tracknumber_color: '#8899AA',
  tracklist_artist_color: '#966b00',
  tracklist_composer_color: '#8ca014',
  tracklist_duration_color: '#007ab7', // #2196f3
  // online check paramaters
  check_integrity_online: true, // If provided URL tag, compare local release with release online and lookup for discrepancies
  strict_online_check: false, // set to true for strict online check (metadata comparison is case sensitive)
  album_length_divergences: '[0.75, 0.01, 2.50]', // online check: tolerated album length divergences in % (for times in s / for times in ms / for vinyl)
  track_length_divergences: '[2.5, 0.1, 5.0]', // online check: tolerated track length divergences in s (for times in s / for times in ms / for vinyl)
  diag_mode: false,
};
Object.keys(prefs).forEach(key => { prefs[key] = GM_getValue(key, prefs[key]) });
['image_size_warning', 'image_size_reduce_threshold']
  .forEach(itemProp => { if (prefs[itemProp] < 8) prefs[itemProp] *= 2**10 });

const caseFixes = {
  en: [
	[
	  new RegExp(`\\s+(${[
		'A', 'An', 'And A', 'And In', 'And The', 'And', 'As A', 'As An', 'As', 'At A', 'At The', 'At',
		'But', 'By A', 'By An', 'By The', 'By', 'For A', 'For An', 'For The', 'For', 'From A', 'From The',
		'From', 'If', 'In A', 'In A', 'In An', 'In An', 'In The', 'In To', 'In', 'Into', 'Nor', 'Of A',
		'Of A', 'Of An', 'Of The', 'Of', 'Off', 'On A', 'On An', 'On The', 'On', 'Onto', 'Or The', 'Or',
		'Out Of A', 'Out Of The', 'Out Of', 'Out', 'Over', 'The', 'To A', 'To An', 'To The', 'To', 'Vs',
		'With A', 'With The', 'With',
	  ].join('|')})(?=\\s+)`, 'g'), (match, expr) => ' ' + expr.toLowerCase(),
	], [
	  new RegExp(`\\b(${['by', 'in', 'of', 'on', 'or', 'to', 'for', 'out', 'into', 'from', 'with'].join('|')})$`, 'g'),
	  (match, expr) => ' ' + expr[0].toUpperCase() + expr.slice(1).toLowerCase(),
	],
	[/([\-\:\&])\s+(the)(?=\s+)/g, '$1 The '],
	[/\b(?:Best\s+of)\b/g, 'Best Of'],
  ],
};

var ref, tbl, elem, child, messages = null, autoFill, dom, dzApiTimeFrame = {}, relationsCheckTimer = null,
	tfMessages = [], releaseTypes, artistTypes;
try {
  var siteArtistsCache = JSON.parse(sessionStorage[document.location.hostname + '.siteArtistsCache']);
} catch(e) { siteArtistsCache = { } }
try {
  var notSiteArtistsCache = JSON.parse(sessionStorage[document.location.hostname + '.notSiteArtistsCache']);
} catch(e) { notSiteArtistsCache = [ ] }

imageHostUploaderInit(inputDataHandler, textAreaDropHandler, textAreaPasteHandler, imageUrlResolver);
insertUAControls();
if ((ref = document.getElementById('upload-table') || document.querySelector('form.edit_form')
   || document.getElementById('upload_table') || document.getElementById('request_form')) != null) {
  ref.ondragover = voidDragHandler1;
  ref.ondrop = voidDragHandler1;
}
setHandlers();
if ((ref = isUpload ? document.getElementById('file') : null) != null) {
  ref.oninput = function(evt) { if (evt.target.files.length > 0) validateTorrentFile(evt.target.files[0]) };
  if (ref.files.length > 0) validateTorrentFile(ref.files[0]);
}
if (!isRED && (ref = document.querySelector('table#dnulist')) != null) {
  function toggleVisibility() {
	var show = ref.style.display.toLowerCase() == 'none';
	ref.style.display = show ? 'block' : 'none';
	ref.previousElementSibling.style.display = show ? 'block' : 'none';
  }
  toggleVisibility();
  if ((ref = document.querySelector('h3#dnu_header')) != null) {
	elem = ref.parentNode;
	child = document.createElement('a');
	child.href = '#';
	child.onclick = evt => { if ((ref = document.querySelector('table#dnulist')) != null) toggleVisibility() };
	child.append(ref);
	elem.prepend(child);
  }
}

if (isRequestNew) {
  let title = document.querySelector('input[name="title"]');
  if (title != null) for (let i = 1; i < 6; ++i) setTimeout(function(e) { title.readOnly = false }, i * 1000);
}

Array.prototype.includesCaseless = function(str) {
  if (typeof str != 'string') return false;
  str = str.toLowerCase();
  return this.some(elem => typeof elem == 'string' && elem.toLowerCase() == str);
};
Array.prototype.pushUnique = function(...items) {
  if (Array.isArray(items) && items.length > 0) items.forEach(it => { if (!this.includes(it)) this.push(it) });
  return this.length;
};
Array.prototype.pushUniqueCaseless = function(...items) {
  if (Array.isArray(items) && items.length > 0) items.forEach(it => { if (!this.includesCaseless(it)) this.push(it) });
  return this.length;
};
// Array.prototype.getUnique = function(prop) {
//   return this.every((it) => it[prop] && it[prop] == this[0][prop]) ? this[0][prop] : null;
// };
Array.prototype.equalTo = function(arr) {
  return Array.isArray(arr) && arr.length == this.length
  	&& Array.from(arr).sort().toString() == Array.from(this).sort().toString();
};
Array.prototype.equalCaselessTo = function(arr) {
  function adjust(elem) { return typeof elem == 'string' ? elem.toLowerCase() : elem }
  return Array.isArray(arr) && arr.length == this.length
  	&& arr.map(adjust).sort().toString() == this.map(adjust).sort().toString();
};
Array.prototype.homogeneous = function() {
  return this.every(elem => elem === this[0]);
}
Array.prototype.flatten = function() {
  return this.reduce(function(flat, toFlatten) {
	return flat.concat(Array.isArray(toFlatten) ? toFlatten.flatten() : toFlatten);
  }, []);
};

String.prototype.trueLength = function() {
  return this.normalize('NFC').length;
//   var index = 0, width = 0, len = 0;
//   while (index < this.length) {
// 	var point = this.codePointAt(index);
// 	width = 0;
// 	while (point) {
// 	  ++width;
// 	  point = point >> 8;
// 	}
// 	index += Math.round(width / 2);
// 	++len;
//   }
//   return len;
};
String.prototype.flatten = function() {
  return this.replace(/\n/g, '\x1C').replace(/\r/g, '\x1D');
};
String.prototype.expand = function() {
  return this.replace(/\x1D/g, '\r').replace(/\x1C/g, '\n');
};
String.prototype.titleCase = function() {
  return this.toLowerCase().split(' ').map(x => x[0].toUpperCase() + x.slice(1)).join(' ');
};
String.prototype.collapseGaps = function() {
  return this.replace(/(?:[ \t\xA0]*\r?\n){3,}/g, '\n\n').replace(/\[(\w+)\]\[\/\1\]/ig, '').trim();
};
String.prototype.properlyFixCapitalization = function(language = 'en') {
  if (!language) return this;
  language = language.toLowerCase();
  if (Array.isArray(caseFixes[language]))
	return caseFixes[language].reduce((result, replacer) => result.replace(...replacer), this);
  console.warn('String.prototype.properlyFixCapitalization() called with invalid language id:', language);
  return this;
};

Date.prototype.getDateValue = function() {
  return Math.floor((this.getTime() / 1000 / 60 - this.getTimezoneOffset()) / 60 / 24);
};
Date.prototype.isExactDate = function() {
  return this.getUTCMilliseconds() > 0 || this.getUTCSeconds() > 0 || this.getUTCMinutes() > 0 || this.getUTCHours() > 0
	|| this.getUTCDate() > 1 || this.getUTCMonth() > 0;
};

class HTML extends String { };

const excludedCountries = [
  /\b(?:United\s+States|USA?)\b/,
  /\b(?:United\s+Kingdom|(?:Great\s+)?Britain|England|GB|UK)\b/,
  /\b(?:Europe|European\s+Union|EU)\b/,
  /\b(?:Unknown)\b/,
];
const tm_presubstitutions = [
  [/\b(?:Singer\/Songwriter)\b/i, 'singer.songwriter'],
  [/\b(?:Pop\/Rock)\b/i, 'pop.rock'],
  [/\b(?:Folk\/Rock)\b/i, 'folk.rock'],
  [/^(?:Psy\/Goa\s+Trance)$/i, 'psytrance, goa.trance'],
  [/\s*,\s*(?:&\s*|and\s+)/i, ' & '],
];
const tm_substitutions = [
  [/^Pop\s*(?:[\-\−\—\–]\s*)?Rock$/i, 'pop.rock'],
  [/^Rock\s*(?:[\-\−\—\–]\s*)?Pop$/i, 'pop.rock'],
  [/^Rock\s+n\s+Roll$/i, 'rock.and.roll'],
  ['AOR', 'album.oriented.rock'],
  [/^(?:Prog)\.?\s*(?:Rock)$/i, 'progressive.rock'],
  [/^Synth[\s\-\−\—\–]+Pop$/i, 'synthpop'],
  [/^World(?:\s+and\s+|\s*[&+]\s*)Country$/i, 'world.music', 'country'],
  ['World', 'world.music'],
  [/^(?:Singer(?:\s+and\s+|\s*[&+]\s*))?Songwriter$/i, 'singer.songwriter'],
  [/^(?:R\s*(?:[\'\’\`][Nn](?:\s+|[\'\’\`]\s*)|&\s*)B|RnB)$/i, 'rhytm.and.blues'],
  [/\b(?:Soundtracks?)$/i, 'score'],
  ['Electro', 'electronic'],
  ['Metal', 'heavy.metal'],
  ['NonFiction', 'non.fiction'],
  ['Rap', 'hip.hop'],
  ['NeoSoul', 'neo.soul'],
  ['NuJazz', 'nu.jazz'],
  [/^J[\s\-]Pop$/i, 'jpop'],
  [/^K[\s\-]Pop$/i, 'jpop'],
  [/^J[\s\-]Rock$/i, 'jrock'],
  ['Hardcore', 'hardcore.punk'],
  ['Garage', 'garage.rock'],
  [/^(?:Neo[\s\-\−\—\–]+Classical)$/i, 'neoclassical'],
  [/^(?:Bluesy[\s\-\−\—\–]+Rock)$/i, 'blues.rock'],
  [/^(?:Be[\s\-\−\—\–]+Bop)$/i, 'bebop'],
  [/^(?:Chill)[\s\-\−\—\–]+(?:Out)$/i, 'chillout'],
  [/^(?:Atmospheric)[\s\-\−\—\–]+(?:Black)$/i, 'atmospheric.black.metal'],
  ['GoaTrance', 'goa.trance'],
  [/^Female\s+Vocal\w*$/i, 'female.vocalist'],
  ['Contemporary R&B', 'contemporary.rhytm.and.blues'],
  // Country aliases
  ['Canada', 'canadian'],
  ['Australia', 'australian'],
  ['New Zealand', 'new.zealander'],
  ['Japan', 'japanese'],
  ['Taiwan', 'thai'],
  ['China', 'chinese'],
  ['Singapore', 'singaporean'],
  [/^(?:Russia|Russian\s+Federation|Россия|USSR|СССР)$/i, 'russian'],
  ['Turkey', 'turkish'],
  ['Israel', 'israeli'],
  ['France', 'french'],
  ['Germany', 'german'],
  ['Spain', 'spanish'],
  ['Italy', 'italian'],
  ['Sweden', 'swedish'],
  ['Norway', 'norwegian'],
  ['Finland', 'finnish'],
  ['Greece', 'greek'],
  [/^(?:Netherlands|Holland)$/i, 'dutch'],
  ['Belgium', 'belgian'],
  ['Luxembourg', 'luxembourgish'],
  ['Denmark', 'danish'],
  ['Switzerland', 'swiss'],
  ['Austria', 'austrian'],
  ['Portugal', 'portugese'],
  ['Ireland', 'irish'],
  ['Scotland', 'scotish'],
  ['Iceland', 'icelandic'],
  [/^(?:Czech\s+Republic|Czechia)$/i, 'czech'],
  [/^(?:Slovak\s+Republic|Slovakia)$/i, 'slovak'],
  ['Hungary', 'hungarian'],
  ['Poland', 'polish'],
  ['Estonia', 'estonian'],
  ['Latvia', 'latvian'],
  ['Lithuania', 'lithuanian'],
  ['Moldova', 'moldovan'],
  ['Armenia', 'armenian'],
  ['Belarus', 'belarussian'],
  ['Ukraine', 'ukrainian'],
  ['Yugoslavia', 'yugoslav'],
  ['Serbia', 'serbian'],
  ['Slovenia', 'slovenian'],
  ['Croatia', 'croatian'],
  ['Macedonia', 'macedonian'],
  ['Montenegro', 'montenegrin'],
  ['Romania', 'romanian'],
  ['Malta', 'maltese'],
  ['Brazil', 'brazilian'],
  ['Mexico', 'mexican'],
  ['Argentina', 'argentinean'],
  ['Jamaica', 'jamaican'],
  // Books
  ['Beletrie', 'fiction'],
  ['Satira', 'satire'],
  ['Komiks', 'comics'],
  ['Komix', 'comics'],
  // Removals
  ['Indie Rock/Rock Pop'],
  ['Unknown'],
  ['Other'],
  ['New'],
  ['Ostatni'],
  ['Knihy'],
  ['Audioknihy'],
  ['dsbm'],
  [/^(?:Audio\s*kniha|Audio\s*Book)$/i],
].concat(excludedCountries.map(it => [it]));
const tm_splits = [
  ['Alternative', 'Indie'],
  ['Rock', 'Pop'],
  ['Soul', 'Funk'],
  ['Ska', 'Rocksteady'],
  ['Jazz Fusion', 'Jazz Rock'],
  ['Rock', 'Pop'],
  ['Jazz', 'Funk'],
];
const tm_additions = [
  [/^(?:(?:(?:Be|Post|Neo)[\s\-\−\—\–]*)?Bop|Modal|Fusion|Free[\s\-\−\—\–]+Improvisation|Modern\s+Creative|Jazz[\s\-\−\—\–]+Fusion|Big[\s\-\−\—\–]*Band)$/i, 'jazz'],
  [/^(?:(?:Free|Cool|Avant[\s\-\−\—\–]*Garde|Contemporary|Instrumental|Crossover|Modal|Mainstream|Modern|Soul|Smooth|Piano|Afro[\s\-\−\—\–]*Cuban)[\s\-\−\—\–]+Jazz)$/i, 'jazz'],
  [/^(?:Opera)$/i, 'classical'],
  [/\b(?:Chamber[\s\-\−\—\–]+Music)\b/i, 'classical'],
  [/\b(?:Orchestral[\s\-\−\—\–]+Music)\b/i, 'classical'],
  [/^(?:Symphony)$/i, 'classical'],
  [/^(?:Sacred\s+Vocal)\b/i, 'classical'],
  [/\b(?:Soundtracks?|Films?|Games?|Video|Series?|Theatre|Musical)\b/i, 'score'],
];

class TagManager extends Array {
  constructor(...tags) {
	super();
	if (tags.length > 0) this.add(...tags);
  }

  add(...tags) {
	var added = 0;
	for (var tag of tags) {
	  if (typeof tag != 'string') continue;
	  qobuzTranslations.forEach(function(it) {
		if (tag.toASCII().toLowerCase() == it[0].toASCII().toLowerCase()) tag = it[1];
	  });
	  tm_presubstitutions.forEach(k => { if (k[0].test(tag)) tag = tag.replace(...k) });
	  tag.split(/\s*[\,\/\;\>\|]+\s*/).forEach(tag => {
		//qobuzTranslations.forEach(function(it) { if (tag == it[0]) tag = it[1] });
		tag = tag.toASCII().replace(/\(.*?\)|\[.*?\]|\{.*?\}/g, '').trim();
		if (tag.length <= 0 || tag == '?') return null;
		function test(obj) {
		  return typeof obj == 'string' && tag.toLowerCase() == obj.toLowerCase()
		  	|| obj instanceof RegExp && obj.test(tag);
		}
		for (var k of tm_substitutions) {
		  if (!test(k[0])) continue;
		  if (k.length >= 1) added += this.add(...k.slice(1));
		  	else addMessage('invalid tag \'' + tag + '\' found', 'warning');
		  return;
		}
		for (k of tm_additions) if (test(k[0])) added += this.add(...k.slice(1));
		for (k of tm_splits) {
		  if (new RegExp('^' + k[0] + '(?:\\s+and\\s+|\\s*[&+]\\s*)' + k[1] + '$', 'i').test(tag)) {
			added += this.add(k[0], k[1]); return;
		  }
		  if (new RegExp('^' + k[1] + '(?:\\s+and\\s+|\\s*[&+]\\s*)' + k[0] + '$', 'i').test(tag)) {
			added += this.add(k[0], k[1]); return;
		  }
		}
		tag = tag.
		  replace(/^(?:Alt\.)\s*(\w+)$/i, 'Alternative $1').
		  replace(/\b(?:Alt\.)(?=\s+)/i, 'Alternative').
		  replace(/^[3-9]0s$/i, '19$0').
		  replace(/^[0-2]0s$/i, '20$0').
		  replace(/\b(Psy)[\s\-\−\—\–]+(Trance|Core|Chill)\b/i, '$1$2').
		  replace(/\s*(?:[\'\’\`][Nn](?:\s+|[\'\’\`]\s*)|[\&\+]\s*)/, ' and ').
		  replace(/[\s\-\−\—\–\_\.\,\~]+/g, '.').
		  replace(/[^\w\.]+/g, '').
		  toLowerCase();
		if (tag.length >= 2 && !this.includes(tag)) {
		  this.push(tag);
		  ++added;
		}
	  });
	}
	return added;
  }
  toString() { return Array.from(this).sort().join(', ') }
};

function fillFromText(evt = undefined) {
  if (autoFill) {
	clearTimeout(autoFill);
	autoFill = undefined;
  }
  const overwrite = evt instanceof Event && evt.target.id == 'fill-from-text';
  const hyperlinkStyle = 'color: skyblue;';
  const bracketStripper = /\s+(?:\([^\(\)]+\)|\[[^\[\]]+\]|\{[^\{\}]+\})/g,
		tailingBracketStripper = /(?:\s+(?:\([^\(\)]+\)|\[[^\[\]]+\]|\{[^\{\}]+\}))+\s*$/;
  let clipBoard = document.getElementById('UA-data');
  if (clipBoard == null) return false;
  messages = document.getElementById('UA-messages');
  //let promise = clientInformation.clipboard.readText().then(text => clipBoard = text);
  //if (typeof clipBoard != 'string') return false;
  let i, matches, sourceUrl, category = document.getElementById('categories'),
	  reportedTorrentCollicions = new Map(), reportedRequests = new Map();
  if (relationsCheckTimer) {
	clearInterval(relationsCheckTimer);
	relationsCheckTimer = null;
  }
  if (category == null) return isTorrentEdit || document.getElementById('releasetype') != null ? fillFromText_Music()
  	: fillFromText_Apps(true).catch(reason => fillFromText_Ebooks(true)).then(lookupNonMusicRelations);
  if (category.value == 0 || category.value == 'Music') return fillFromText_Music();
  if (category.value == 1 || category.value == 'Applications') return fillFromText_Apps().then(lookupNonMusicRelations);
  if (category.value == 2 || category.value == 'E-Books') return fillFromText_Ebooks().then(lookupNonMusicRelations);
  if (category.value == 3 || category.value == 'Audiobooks') return fillFromText_Ebooks().then(lookupNonMusicRelations);
  return Promise.reject('Not supported category');

  function fillFromText_Music() {
	if (messages != null) messages.remove();
	const divs = ['—', '⸺', '⸻'];
	const vaParser = /^(?:Various(?:\s+Artists)?|V\/?A|\<various\s+artists\>|Různí(?:\s+interpreti)?)$/i;
	const VA = 'Various Artists';
	const multiArtistParsers = [
	  /\s*[,;\u3001](?!\s*(?:[JjSs]r)\b)(?:\s*[Aa]nd\s+)?\s*/,
	  /\s+[\/\|\×|meets]\s+/i,
	];
	const featArtistParsers = [
	  ///\s+(?:meets)\s+(.+?)\s*$/i,
	  /* 0 */ /\s+(?:[Ww](?:ith|\.?\/)|[Aa]vec)\s+(?!his\b|her\b|Friends$|Strings$)(.+?)\s*$/,
	  /* 1 */ /(?:\s+[\-\−\—\–\_])?\s+(?:[Ff]eaturing\s+|(?:[Ff]eat|[Ff]t|FT)\.\s*|[Ff]\.?\/\s+)([^\(\)\[\]\{\}]+?)(?=\s*(?:[\(\[\{].*)?$)/,
	  /* 2 */ /\s+\[\s*f(?:eat(?:\.|uring)|t\.|\.?\/)\s+([^\[\]]+?)\s*\]/i,
	  /* 3 */ /\s+\(\s*f(?:eat(?:\.|uring)|t\.|\.?\/)\s+([^\(\)]+?)\s*\)/i,
	  /* 4 */ /\s+\[\s*(?:(?:en\s+)?duo\s+)?avec\s+([^\[\]]+?)\s*\]/i,
	  /* 5 */ /\s+\(\s*(?:(?:en\s+)?duo\s+)?avec\s+([^\(\)]+?)\s*\)/i,
	  /* 6 */ /\s+\[\s*(?:with|[Ww]\.?\/)\s+(?![Hh]is\b|[Hh]er\b|Friends$|Strings$)([^\[\]]+?)\s*\]/,
	  /* 7 */ /\s+\(\s*(?:with|[Ww]\.?\/)\s+(?![Hh]is\b|[Hh]er\b|Friends$|Strings$)([^\(\)]+?)\s*\)/,
	];
	const ampersandParsers = [
	  /\s+(?:meets|vs\.?|X)\s+(?!\s*(?:[\&\/\+\,\;]|and))/i,
	  /\s*[;\/\|\×]\s*(?!\s*(?:\s*[\&\/\+\,\;]|and))/i,
	  /\s+(?:[\&\+]|and)\s+(?!his\b|her\b|Friends$|Strings$)/i, // /\s+(?:[\&\+]|and)\s+(?!(?:The|his|her|Friends)\b)/i,
	  /\s*\+\s*(?!(?:his\b|her\b|Friends$|Strings$))/i,
	];
	const pseudoArtistParsers = [
	  /* 0 */ vaParser,
	  /* 1 */ /^(?:#??N[\/\-]?A|[JS]r\.?)$/i,
	  /* 2 */ /^(?:auditorium|[Oo]becenstvo|[Pp]ublikum)$/,
	  /* 3 */ /^(?:(Special\s+)??Guests?|Friends|(?:Studio\s+)?Orchestra)$/i,
	  /* 4 */ /^(?:Various\s+Composers)$/i,
	  /* 5 */ /^(?:[Aa]nonym)/,
	  /* 6 */ /^(?:traditional|trad\.|lidová)$/i,
	  /* 7 */ /\b(?:traditional|trad\.|lidová)$/,
	  /* 8 */ /^(?:tradiční|lidová)\s+/,
	  /* 9 */ /^(?:[Ll]iturgical\b|[Ll]iturgick[áý])/,
	];
	const remixParsers = [
	  /\s+\((?:The\s+)?Remix(?:e[sd])?\)/i,
	  /\s+\[(?:The\s+)?Remix(?:e[sd])?\]/i,
	  /\s+(?:The\s+)?Remix(?:e[sd])?\s*$/i,
	  /^(?:The\s+)?(?:Remixes)\b|\b(?:The\s+)?(?:Remixes)$/,
	  /\s+\(([^\(\)]+?)[\'\’\`]s[^\(\)]*\s(?:(?:Re)?Mix|Reworx)\)/i,
	  /\s+\[([^\[\]]+?)[\'\’\`]s[^\[\]]*\s(?:(?:Re)?Mix|Reworx)\]/i,
	  /\s+\(([^\(\)]+?)\s+(?:(?:Extended|Enhanced)\s+)?(?:Remix|Reworx)\)/i,
	  /\s+\[([^\[\]]+?)\s+(?:(?:Extended|Enhanced)\s+)?(?:Remix|Reworx)\]/i,
	  /\s+\(Remix(?:ed)?\s+by\s+([^\(\)]+)\)/i,
	  /\s+\[Remix(?:ed)?\s+by\s+([^\[\]]+)\]/i,
	];
	const otherArtistsParsers = [
	  [/^(.*?)\s+(?:under|(?:conducted)\s+by)\s+(.*)$/, 4],
	  [/^()(.*?)\s+\(conductor\)$/i, 4],
	  //[/^()(.*?)\s+\(.*\)$/i, 1],
	];
	const labelSubstitutes = [
	  [/^(?:DG)$/, 'Deutsche Grammophon'],
	  [/^(?:Not\s+specified)$/i, ''],
	  //[/(?:\s*[\,\/])?\s+a\s+division\s+of\s+/i, ' / '],
	  //[/\s+\(a\s+division\s+of\s+([^\(\)]+)\)/i, ' / $1'],
	];
	const artistClassParsers = [
	  /* 0 */ [/^(?:Main\s?Artist)$/i],
	  /* 1 */ [/^(?:Featured\s?Artist)$/i],
	  /* 2 */ [/^(?:Remix)/i],
	  /* 3 */ [/(?:^(?:Composer|(?:Composer)?Lyricist|Author|Writer|music|written[\s\-]by|libreto|music\simprovisation)|\b(?:lyrics))$/i],
	  /* 4 */ [/^(?:Conductor|(?:Chorus|Choir)\s?Master|Director|conducts|(?:conducted|directed)[\s\-]by)$/i],
	  /* 5 */ [/^(?:DJ|Compiler|Compiled[\s\-]By|compiled[\s\-]by)$/],
	  /* 6 */ [/^(?:Producer|produced[\s\-]by)$/i],
	  /* 7 */ [/^(?:Artist|Soloist|Vocals|Ensemble|Orchestra|Choir)$/i],
	  /* 8 */ [
		/\b(?:Recorded|Engineer|Producer|Mixer|Programming|Programmer|Arranger|Assistant|Translation)\b/i,
		/(?:PersonnelMastering)\b/i,
	  ],
	];
	const missingSpacesTest = /\b(?:(?:Vol|No)\.)(?:\d+|[IVXLCDM]+)\b|\w[\,\;\:]\S|[\?\!\)\]\}][^\,\.\;\?\!\s]|\S[\(\[\{]/;
	const oauth2timeReserve = 30; // reserve this time (s) for upcoming authorized request
	const tzOffset = new Date().getTimezoneOffset() * 60 * 1000;
	var isVA, ajaxRejects = 0;
	try { var onlineSource = new URL(clipBoard.value) } catch(e) { }
	return (function() {
	  if (onlineSource) return urlResolver(onlineSource).then(fetchOnline_Music);
	  const fields = [
		/* 00 */ 'artist', 'album', 'album_year', 'release_date', 'label', 'catalog', 'country', 'encoding',
		/* 08 */ 'codec', 'codec_profile', 'bitrate', 'bitdepth', 'samplerate', 'channels', 'channel_mode',
		/* 15 */ 'media', 'genre', 'disc_number', 'total_discs', 'disc_subtitle', 'track_number',
		/* 21 */ 'total_tracks', 'title', 'track_artist', 'performer', 'composer', 'conductor', 'remixer',
		/* 28 */ 'compiler', 'producer', 'duration', 'samples', 'filesize', 'album_gain', 'album_peak',
		/* 35 */ 'track_gain', 'track_peak', 'album_dr', 'track_dr', 'vendor', 'url', 'dirpath',
		/* 42 */ 'description', 'identifiers', 'lyrics',
	  ];
	  return Promise.resolve(clipBoard.value.split(/(?:\r?\n)+/).filter(line => line.trim().length > 0).map(function(line, ndx) {
		var metaData = line.expand().split('\x1E'), track = { identifiers: {} }, identifiers = [];
	  	const patternHint = ' (see browser\'s console for details and update your player\'s format ' +
			'pattern from this script header or Greasy Fork description)';
		if (metaData.length < fields.length) {
		  console.error('invalid data format for track #' + (ndx + 1) + ': length:', metaData.length,
			'(' + fields.length + '); metaData:', metaData, '; line:', line);
		  throw 'invalid clipboard data format for track #' + (ndx + 1) + patternHint;
		} else if (metaData.length > fields.length) {
		  console.warn('unexpected data format for track #' + (ndx + 1) + ': length:', metaData.length,
			'(expected length: ' + fields.length + '); metaData:', metaData, '; line:', line);
		  addMessage('unexpected clipboard data format for track #' + (ndx + 1) + patternHint, 'warning');
		}
	  	fields.forEach(function(propName) {
		  if (propName == 'identifiers') {
			metaData.shift().trim().split(/\s+/).forEach(function(id) {
			  if (/^([\w\-]+)[=:](\S*)$/.test(id)) track.identifiers[RegExp.$1.toUpperCase()] = RegExp.$2.replace(/\x1B/g, ' ');
			});
		  } else {
			track[propName] = metaData.shift();
			if (track[propName] === '') track[propName] = undefined;
		  }
		});
	  	if (prefs.check_whitespace) {
		  Object.keys(track).forEach(function(propName) {
			if (typeof track[propName] != 'string') return;
			if (!['description', 'lyrics'].includes(propName) && (track[propName].includes('\r') || track[propName].includes('\n'))) {
			  track[propName] = track[propName].replace(/[\r\n]+/g, '');
			  addMessage('track #' + (ndx + 1) + ' contains linebreaks in tag <' + propName + '>', 'warning');
			}
			if ((i = ['description', 'lyrics'].includes(propName) ? /[\x00-\x08\x0B\x0C\x0E-\x19]+/g : /[\x00-\x19]+/g).test(track[propName])) {
			  track[propName] = track[propName].replace(i, '');
			  addMessage('track #' + (ndx + 1) + ' contains control codes in tag <' + propName + '>', 'warning');
			}
			if (/^[\s\xA0]+$/.test(track[propName])) {
			  track[propName] = undefined;
			  addMessage('track #' + (ndx + 1) + ' in tag <' + propName + '> contains only whitespace', 'warning');
			} else if (/^[\s\xA0]+|[\s\xA0]+$/.test(track[propName])) {
			  track[propName] = track[propName].trim();
			  addMessage('track #' + (ndx + 1) + ' in tag <' + propName + '> contains leading/trailing whitespace', 'warning');
			}
			if (/[ \xA0]{2,}/.test(track[propName])) {
			  track[propName] = track[propName].replace(/[ \xA0]{2,}/g, ' ')
			  addMessage('track #' + (ndx + 1) + ' in tag <' + propName + '> contains multiple spaces', 'warning');
			}
		  });
		  if (missingSpacesTest.test(track.title))
			addMessage('missing space in track#' + (ndx + 1) + ' title: "' + track.title + '"', 'notice');
		}
		['description', 'lyrics'].forEach(function(propName) {
		  if (track[propName] == '.') track[propName] = undefined; else if (track[propName]) {
			if (prefs.remap_texttools_newlines)
			  track[propName] = track[propName].replace(/__/g, '\r\n').replace(/_/g, '\n') // ambiguous
			track[propName] = track[propName].collapseGaps();
		  }
		});
		[
		  'bitrate', 'bitdepth', 'samplerate', 'channels', 'total_discs', 'total_tracks', 'samples',
		  'filesize', 'album_dr', 'track_dr',
		].forEach(function(propName) {
		  if (track[propName] !== undefined && typeof track[propName] != 'number')
		  	track[propName] = parseInt(track[propName]);
		});
		['duration', 'album_peak', 'track_peak'].forEach(function(propName) {
		  if (track[propName] !== undefined && typeof track[propName] != 'number')
			track[propName] = parseFloat(track[propName]);
		});
		['album_gain', 'track_gain'].forEach(function(propName) {
		  if (track[propName] === '') track[propName] = undefined;
		  	else if (track[propName] !== undefined && typeof track[propName] != 'number')
			  track[propName] = parseFloat(track[propName].replace(/\s*\b(?:dB)\s*$/i, ''));
		});
		if (track.album_year) track.album_year = extractYear(track.album_year) || NaN;
		return track;
	  }));
	})().then(parseTracks).catch(reason => { addMessage(reason, 'critical') });

	function parseTracks(tracks) {
	  if (tracks.length <= 0) {
		clipBoard.value = '';
		throw 'no tracks found';
	  }
	  if (prefs.diag_mode) console.debug('Parsing tracks:', tracks);
	  const maxFuzzyLevel = 3;
	  const selfReleaseParsers = [
		/^(?:Self[\s\-]Released|Not\s+On\s+Label|No\s+Label|Independent|none|vlastní\s+náklad)$/i,
		/^(?:\(no\s+label\)|\[no\s+label\])$/i,
		/^(?:iMD)\b/,
	  ];
	  const naParsers = [
		/^(?:#?N[\/\-]A)$/i,
		/^(?:#NA)$/,
	  ];
	  var albumBitrate = 0, totalTime = 0, albumSize = 0, media, release = { totalDiscs: 1, sampleRates: [] };
	  var allowedFormats = Array.from(document.querySelectorAll('select#format > option'))
	  	.filter(option => option.value.length > 0).map(option => option.value);
	  if (allowedFormats.length <= 0) allowedFormats = ["MP3", "FLAC", "AAC", "AC3", "DTS"];
	  tracks.forEach(function(track, index) {
		let trackId = track.track_number ? track.disc_number ?
			track.disc_number + '/' + track.track_number : track.track_number : index + 1;
		if (!track.track_number) {
		  clipBoard.value = '';
		  throw new HTML('missing required tag track number for track #' + trackId + ruleLink('2.3.16.4'));
		}
		if (!track.title) {
		  clipBoard.value = '';
		  throw new HTML('missing required tag track title for track #' + trackId + ruleLink('2.3.16.4'));
		}
		if (track.duration !== undefined && track.duration !== null && isUpload && (isNaN(track.duration) || track.duration <= 0)) {
		  clipBoard.value = '';
		  throw 'invalid track #' + trackId + ' length: ' + track.duration;
		}
		processTrackArtists(track);
		if (naParsers.some(rx => rx.test(track.label))) track.label = undefined;
		if (naParsers.concat([/^(?:none)$/i]).some(rx => rx.test(track.catalog))) track.catalog = undefined;
		if (/^(\d+)\s*[\/]\s*(\d+)$/.test(track.track_number)) { // track/total_tracks
		  addMessage('nonstandard track number formatting for track #' + trackId + ': ' + track.track_number, 'warning');
		  track.track_number = RegExp.$1;
		  if (!track.total_tracks) track.total_tracks = parseInt(RegExp.$2);
		}/* else if (/^(\d+)[\.\-](\d+)$/.test(track.track_number)) { // disc_number.track_number
		  addMessage('nonstandard track number formatting for track #' + trackId + ': ' + track.track_number, 'warning');
		  if (!track.disc_number) track.disc_number = parseInt(RegExp.$1);
		  track.track_number = RegExp.$2;
		}*/
		if (track.disc_number) {
		  if (/^(\d+)\s*\/\s*(\d+)/.test(track.disc_number)) {
			addMessage('nonstandard disc number formatting for track #' + trackId + ': ' + track.disc_number, 'warning');
			track.disc_number = RegExp.$1;
			if (!track.total_discs) track.total_discs = RegExp.$2;
		  } else track.disc_number = parseInt(track.disc_number);
		  if (isNaN(track.disc_number)) {
			addMessage('invalid disc numbering for track #' + trackId, 'warning');
			track.disc_number = undefined;
		  }
		  if (track.disc_number > release.totalDiscs) release.totalDiscs = track.disc_number;
		}
		totalTime += track.duration;
		albumBitrate += track.bitrate * track.duration;
		if (track.samplerate/* && track.duration*/)
		  if (typeof release.sampleRates[track.samplerate] == 'number')
			release.sampleRates[track.samplerate] += track.duration || 0;
		  else release.sampleRates[track.samplerate] = track.duration || 0;
		albumSize += track.filesize;
		if (track.codec) allowedFormats.forEach(function(codec) {
		  if (codec.toLowerCase() == track.codec.toLowerCase()) track.codec = codec;
		});
		if (track.encoding && !['lossless', 'lossy'].includes(track.encoding = track.encoding.toLowerCase())) {
		  addMessage('invalid encoding for track #' + trackId + ': ' + track.encoding, 'warning');
		  track.encoding = undefined;
		}
		if (!track.encoding && track.codec) switch (track.codec) {
		  case 'FLAC': case 'WAV': case 'AIFF': case 'APE': case 'ALAC': case 'WavPack': case 'TAK':
			track.encoding = 'lossless'; break;
		  case 'MP3': case 'AAC': case 'Vorbis': case 'Opus': case 'AC3':
			track.encoding = 'lossy'; break;
		}
		if (track.bitrate > 0) {
		  let triggers = [24, 12];
		  switch (track.codec) {
			case 'FLAC': case 'APE': case 'ALAC': case 'WavPack':
			  if (track.samplerate > 0 && track.bitdepth > 0 && track.channels > 0) triggers = [
				Math.round(Math.max(track.samplerate * track.bitdepth * track.channels / 4410, 192)),
				Math.round(Math.max(track.samplerate * track.bitdepth * track.channels / 6300, 192)),
			  ];
			  break;
			case 'MP3':
			  switch (track.codec_profile) {
				case 'VBR V0': triggers = [192, 96]; break;
				case 'VBR V1': triggers = [160, 80]; break;
				case 'VBR V2': triggers = [128, 64]; break;
			  }
			  break;
			case 'AAC':
			  if (/\b(?:TVBR)\sq(\d+)\b/.test(track.vendor)) triggers = [
				Math.round(Math.max(parseInt(RegExp.$1) * 1.9, 192)),
				Math.round(Math.max(parseInt(RegExp.$1) * 1.4, 192)),
			  ]; else if (/\b(?:(?:CV|A|C)BR)\s(\d+)kbps\b/.test(track.vendor)) triggers = [
				Math.round(Math.max(parseInt(RegExp.$1) * 0.75, 192)),
				Math.round(Math.max(parseInt(RegExp.$1) * 0.4, 192)),
			  ];
			  break;
		  }
		  if (track.bitrate < triggers[0]) addMessage('track #' + trackId + ' has suspiciously low bitrate (' +
			track.bitrate + ' kbps)', track.bitrate < triggers[1] ? 'warning' : 'notice');
		}
		if (typeof track.identifiers.MD5 == 'string') track.identifiers.MD5 = track.identifiers.MD5.toUpperCase();
	  });
	  sourceUrl = getStoreUrl();
	  if (!onlineSource && release.totalDiscs > 1 && tracks.some(it => it.total_discs != release.totalDiscs))
		addMessage('at least one track not having properly set TOTALDISCS (' + release.totalDiscs + ')', 'info');
	  [
		['artist', 'album artist'],
		['album', 'album title'],
		['album_year', 'album year'],
		['release_date', 'release date'],
		['encoding', 'encoding'],
		['codec', 'codec'],
		['codec_profile', 'codec profile'],
		['vendor', 'vendor'],
		['media', 'media'],
		['channels', 'channels'],
		['channel_mode', 'channel_mode'],
		['label', 'label'],
		['country', 'country'],
		['edition_title', 'edition title'],
		['series', 'series'],
	  ].forEach(function(property) {
		var values = new Set(tracks.map(track => track[property[0]])
			.filter(property => property !== undefined && property !== null));
		if (values.size == 1) release[property[0]] = values.values().next().value; else if (values.size > 1) {
		  var val, diverses = '', iterator = values.values();
		  while (!(val = iterator.next()).done) diverses += '<br>\t' + val.value;
		  clipBoard.value = '';
		  throw new HTML('mixed releases not accepted (' + property[1] + ') - supposedly user compilation' + diverses);
		}
	  });
	  if (isVA = vaParser.test(release.artist)) release.artist = VA; else if (!release.artist) {
		clipBoard.value = '';
		throw new HTML('missing required tag main artist' + ruleLink('2.3.16.4'));
	  }
	  if (!release.album) {
		clipBoard.value = '';
		throw new HTML('missing required tag album title' + ruleLink('2.3.16.4'));
	  }
	  if (prefs.check_whitespace && missingSpacesTest.test(release.album))
		addMessage('missing space in album title: "' + release.album + '"', 'notice');
// 	  ['artists', 'featured_artists', 'composers', 'conductors', 'performers', 'compilers', 'remixers', 'producers'].forEach(function(role) {
// 		if (tracks.every(track => Array.isArray(track[role]) && track[role].equalTo(tracks[0][role]))) release[role] = Array.from(tracks[0][role]);
// 	  });
	  [
		['trackArtists', 'track_artist'],
		['totalTracks', 'total_tracks'],
		['discSubtitles', 'disc_subtitle'],
		['composers', 'composer'],
		['catalogs', 'catalog'],
		['bitrates', 'bitrate'],
		['bitdepths', 'bitdepth'],
		['albumgains', 'album_gain'],
		['albumpeaks', 'album_peak'],
		['albumdrs', 'album_dr'],
		['dirpaths', 'dirpath'],
		['descriptions', 'description'],
		['genres', 'genre'],
		['urls', 'url'],
		['coverUrls', 'cover_url'],
	  ].forEach(function(property) {
		if (!Array.isArray(release[property[0]])) release[property[0]] = [];
		tracks.forEach(function(track) {
		  if (track[property[1]] === undefined || track[property[1]] === null
			  || (typeof track[property[1]] == 'string' && track[property[1]].length <= 0)
			  || release[property[0]].includes(track[property[1]])) return;
		  release[property[0]].push(track[property[1]]);
		});
	  });
	  if (release.totalTracks.length > 0) {
		if (release.totalTracks.length > 1)
		  addMessage('total tracks not consistent across release: ' + release.totalTracks, 'warning');
		else if (release.totalTracks[0] != tracks.length) addMessage('total tracks not matching tracklist length (' +
			release.totalTracks[0] + ' ≠ ' + tracks.length + ')', 'warning');
	  }
	  tracks.forEach(function(track1, ndx1) {
		if (tracks.some((track2, ndx2) => ndx2 < ndx1 && track1.track_number == track2.track_number
			&& track1.disc_number == track2.disc_number && track1.disc_subtitle == track2.disc_subtitle)) {
		  addMessage('duplicate track ' + (track1.disc_number ? track1.disc_number + '-' : '') +
			(track1.disc_subtitle ? track1.disc_subtitle + '-' : '') + track1.track_number, 'warning');
		}
	  });
	  if (!tracks.every(track => track.disc_number > 0) && !tracks.every(track => !track.disc_number))
		addMessage('inconsistent release (mix of tracks with and without disc number)', 'warning');
	  var releaseDate = new Date(release.release_date);
	  if (isNaN(releaseDate)) {
		releaseDate = normalizeDate(release.release_date);
		releaseDate = releaseDate && new Date(releaseDate.toString()) || NaN;
	  }
	  let releaseYear = !isNaN(releaseDate) && releaseDate.getFullYear() || extractYear(release.release_date);
	  let language = getHomoIdentifier('LANGUAGE');
	  if (language) language = langCodes.find(langCode => langCode.includesCaseless(language));
	  if (language) language = language[0]; else language = 'en';
	  if (!onlineSource) {
		if (!(release.album_year >= 1900))
		  addMessage('album year is missing or invalid (' + release.album_year + ')', 'warning');
		if (release.codec && !allowedFormats.includes(release.codec)) {
		  clipBoard.value = '';
		  throw 'disallowed codec present (' + release.codec + ')';
		}
		if (!onlineSource && /\b(?:MQAEncode)\b/.test(release.vendor)) {
		  clipBoard.value = '';
		  throw 'MQA format detected (' + release.vendor + '), specifically banned';
		}
		[
		  ['bit depths', release.bitdepths, bitdepth => ![16, 24].includes(bitdepth)],
		  [
			'sample rates',
			Object.keys(release.sampleRates),
			samplerate => samplerate <= 0 || samplerate > 192000 || [44100, 48000].every(sr => samplerate % sr != 0)
		  ],
		].forEach(function(validator) {
		  if (validator[1].length <= 0 || !validator[1].some(validator[2])) return;
		  clipBoard.value = '';
		  throw 'disallowed ' + validator[0] + ' present (' + validator[1].filter(validator[2]).toString() + ')';
		});
		if (!release.totalTracks) addMessage('total tracks not set', 'warning');
		if (release.albumgains.length > 1)
		 	addMessage('inconsistent album RG across release', release.totalDiscs > 1 ? 'notice' : 'warning')
		if (tracks.some(track => track.identifiers.LANGUAGE != tracks[0].identifiers.LANGUAGE))
		 	addMessage('inconsistent language across release', 'notice')
		if (release.albumpeaks.length > 1)
		 	addMessage('inconsistent album peak across release', release.totalDiscs > 1 ? 'notice' : 'warning')
		if (release.albumdrs.length > 1 && release.bitdepths.length <= 1 && Object.keys(release.sampleRates).length <= 1)
		 	addMessage('inconsistent album DR across release', release.totalDiscs > 1 ? 'notice' : 'warning')
		if (prefs.assume_rg && tracks.some(track => track.album_gain === undefined))
		 	addMessage('at least one track is missing RG info', 'notice');
		if (prefs.assume_dr && tracks.some(track => track.bitdepth > 16 && track.album_dr === undefined))
		 	addMessage('at least one high resolution track is missing DR info', 'notice');
		release.descriptions.forEach(function(description) {
		  if (/^[\w\-]+\@[\w\-]+(?:\.[\w\-]+)+$|\b(?:RuTracker|FLACMANIA\.RU|24bit-music\.info|GetMetal\.CLUB|LOSSLESSBEST|flacmania\.ru)\b|~ N ~|\b[\w\-\.]+@[\w\-\.]+\.[\w\-]+\b/i.test(description))
			addMessage(new HTML('Advertising detected in description: ' + RegExp.lastMatch.bold()), 'warning');
		});
		release.urls.forEach(function(url) {
		  if (/^(?:https?):\/\/(\w+\.)*7digital\.com\/.*\?f=/i.test(url))
			addMessage('session id present in online source URL: ' + url, 'notice');
		});
		release.dirpaths.forEach(function(dirPath) {
		  if (hyphenCoupling.test(dirPath)) addMessage('torrent folder containing hyphen coupling ("' +
			dirPath + '")', 'notice');
		});
		if (tracks.some(track => track.identifiers.BPM && !(track.identifiers.BPM > 0)))
		  addMessage('at least one track having invalid BPM', 'notice');
	  }
	  albumBitrate /= totalTime;
	  let albumBPM = Math.round(tracks.reduce(function(acc, track) {
		return acc + parseInt(track.identifiers.BPM) * track.duration;
	  }, 0) / totalTime);
	  let canSort = tracks.every((tr1, ndx1) => tracks.every((tr2, ndx2) => ndx1 == ndx2
		|| tr1.track_number != tr2.track_number || tr1.disc_number != tr2.disc_number));
	  let isFromDSD = false, isClassical = false, yadg_prefil = '', editionTitle = release.edition_title,
		  composerEmphasis = tracks.some(track => track.identifiers.COMPOSEREMPHASIS),
		  isCompilation = tracks.every(track => track.identifiers.COMPILATION == 1),
		  barCode = getHomoIdentifier('BARCODE'), tags = new TagManager(), releaseType, iter, rx, lookupWorkers = { };
	  if (barCode) barCode = parseInt(barCode.toString().replace(/\s+/g, ''));
	  if (!Number.isInteger(barCode)) {
		if (release.catalogs.length == 1) barCode = parseInt(release.catalogs[0].replace(/[\s\-]/g, ''));
		if (!Number.isInteger(barCode) || barCode < 10**10) barCode = undefined;
	  }
	  if (!overwrite && (ref = document.getElementById('releasetype')) != null) releaseType = parseInt(ref.value);
	  if (i = getHomoIdentifier('RELEASETYPE') || getHomoIdentifier('RELEASE_TYPE')) {
		if (!releaseType) releaseType = getReleaseTypeFromId(i) || undefined;
		if (/^(?:Compilation)$/i.test(i)) isCompilation = true;
	  }
	  if ((!releaseType || releaseType == getReleaseTypeValue('EP')) && totalTime <= prefs.EP_threshold
		  && tracks.every(track => track.title.replace(tailingBracketStripper, '') == tracks[0].title.replace(tailingBracketStripper, '')))
		releaseType = getReleaseTypeValue('Single');
	  if (!releaseType) if (totalTime > 0 && totalTime < prefs.single_threshold) releaseType = getReleaseTypeValue('Single');
	  	else if (totalTime > 0 && totalTime < prefs.EP_threshold) releaseType = getReleaseTypeValue('EP');
	  if (release.genres.length > 0) {
		const classicalGenreParsers = [
		  /\b(?:Classical|Classique|Klassik|Symphony|Symphonic(?:al)?|Operas?|Operettas?|Ballets?|(?:Violin|Cello|Piano)\s+Solos?|Chamber|Choral|Choirs?|Orchestral|Etudes?|Duets|Concertos?|Cantatas?|Requiems?|Passions?|Mass(?:es)?|Oratorios?|Poems?|Sacred|Secular|Vocal\s+Music)\b/i,
		];
		release.genres.forEach(function(genre) {
		  classicalGenreParsers.forEach(function(classicalGenreParser) {
			if (classicalGenreParser.test(genre) && !/\b(?:metal|rock|pop)\b/i.test(genre)) {
			  composerEmphasis = true;
			  isClassical = true
			}
		  });
		  if (/\b(?:Jazz|Vocal)\b/i.test(genre) && !/\b(?:Nu|Future|Acid)[\s\-\−\—\–]*Jazz\b/i.test(genre)
			  && !/\bElectr(?:o|ic)[\s\-\−\—\–]?Swing\b/i.test(genre)) {
			composerEmphasis = true;
		  }
		  if (/\b(?:Soundtracks?|Score|Films?|Games?|Video|Series?|Theatre|Musical)\b/i.test(genre)) {
			if (!releaseType || [1].includes(releaseType)) releaseType = getReleaseTypeValue('Soundtrack');
			composerEmphasis = true;
		  }
		  if (/\b(?:Christmas\s+Music)\b/i.test(genre)) {
			composerEmphasis = true;
		  }
		  tags.add(...genre.split(/\s*\|\s*/));
		});
		if (release.genres.length > 1) addMessage('inconsistent genre accross album: ' + release.genres.join(' / '), 'warning');
	  }
	  if (!onlineSource && isClassical && !tracks.every(track => track.composer)) {
		addMessage(new HTML('all tracks composers must be set for clasical music' + ruleLink('2.3.17')), 'warning');
		//return false;
	  }
	  // Processing artists: recognition, splitting and dividing to categores
	  const roleCollisions = [
		[4, 5], // main
		[0, 4], // guest
		[], // remixer
		[], // composer
		[], // conductor
		[], // DJ/compiler
		[], // producer
	  ];
	  var artists = [], albumGuests = [];
	  for (i = 0; i < 7; ++i) artists[i] = [];

	  if (!isVA) {
		if (Array.isArray(release.artists) && release.artists.length > 0) {
		  artists[0] = release.artists.filter(exclusions);
		  if (Array.isArray(release.featured_artists)) {
			albumGuests = release.featured_artists;
			artists[1] = release.featured_artists.filter(exclusions);
		  }
		  yadg_prefil = joinArtists(artists[0]);
		} else {
		  yadg_prefil = [0, 6, 7].some(ndx => featArtistParsers[ndx].test(release.artist)) && getSiteArtist(release.artist) ?
			release.artist : spliceGuests(release.artist);
		  addArtists(0, yadg_prefil);
		  artists[0] = artists[0].filter(exclusions);
		  albumGuests = Array.from(artists[1]);
		}
		if (ampersandParsers.some(rx => rx.test(yadg_prefil))) getSiteArtist(yadg_prefil); // priority cache record

		function exclusions(artist) {
		  return !['conductors', 'compilers']
			.some(category => Array.isArray(release[category]) && release[category].includesCaseless(artist));
		}
	  }

	  featArtistParsers.slice(1).forEach(function(rx, ndx) {
		if ((matches = rx.exec(release.album)) == null) return;
		if (ndx >= 5 && !splitArtists(matches[1], multiArtistParsers.concat(ampersandParsers.slice(1)))
			.every((artist, ndx) => looksLikeTrueName(artist, 1))) return;
		addArtists(1, matches[1]);
		artists[0].forEach(guest => { if (albumGuests.includesCaseless(guest)) albumGuests.push(guest) });
		addMessage('featured artist(s) in album title (' + release.album + ')', 'warning');
		release.album = release.album.replace(rx, '');
	  });
	  if ((matches = remixParsers.slice(4).reduce((acc, rx) => acc || rx.exec(release.album), null)) != null)
		addArtists(2, matches[1].replace(/\b\d{4}\b/g, '').replace(/\s{2,}/g, ' ').trim());
	  if (((matches = /^(.*?)\s+(?:Presents)\s+(.*)$/.exec(release.album)) != null
			|| isVA && (matches = (/\s+\(compiled\s+by\s+(.*?)\)\s*$/i.exec(release.album)
			|| /\s+(?:compiled\s+by)\s+(.*?)\s*$/i.exec(release.album))) != null) && looksLikeTrueName(matches[1])) {
		addArtists(5, matches[1]);
		if (!releaseType) releaseType = getReleaseTypeValue('Compilation');
	  }

	  for (iter of tracks) {
		let categories = ['track_artist', 'track_guest'];
		if (prefs.include_all_performers) categories.push('performer');
		categories.forEach(function(category) {
		  var arrayRef = category + 's';
		  addTrackPerformers(iter[Array.isArray(iter[arrayRef]) && iter[arrayRef].length > 0 ? arrayRef : category]);
		});
		[
		  [2, 'remixer'],
		  [3, 'composer'],
		  [4, 'conductor'],
		  [5, 'compiler'],
		  [6, 'producer'],
		].forEach(function(category) {
		  var arrayRef = category[1] + 's';
		  addArtists(category[0], iter[Array.isArray(iter[arrayRef]) && iter[arrayRef].length > 0 ? arrayRef : category[1]]);
		});

		if (iter.title) {
		  featArtistParsers.slice(1).forEach(function(rx, ndx) {
			if ((matches = rx.exec(iter.title)) == null) return;
			let featArtists = splitArtists(matches[1], multiArtistParsers.concat(ampersandParsers.slice(1)));
			if (ndx >= 5 && !featArtists.every((artist, ndx) => looksLikeTrueName(artist, 1))) return;
			if (Array.isArray(iter.track_artists) && iter.track_artists.length > 0) {
			  if (!Array.isArray(iter.track_guests)) iter.track_guests = [];
			  featArtists.forEach(function(featArtist) {
				if (!iter.track_artists.includesCaseless(featArtist) && !iter.track_guests.includesCaseless(featArtist))
					iter.track_guests.push(featArtist);
			  });
			  if (!isVA && iter.track_artists.equalCaselessTo(release.artists)
				  && iter.track_guests.equalCaselessTo(release.featured_artists)) {
				iter.track_artists = iter.track_guests = iter.track_artist = undefined;
			  } else if (iter.track_guests.length > 0)
				iter.track_artist = joinArtists(iter.track_artists) + ' feat. ' + joinArtists(iter.track_guests);
			} else {
			  let useTA = iter.track_artist && !featArtists.some(featArtist => iter.track_artist.includes(featArtist)
				  || Array.isArray(iter.track_artists) && iter.track_artists.includes(featArtist)
				  || Array.isArray(iter.track_guests) && iter.track_guests.includes(featArtist));
			  iter.track_artist = iter[useTA ? 'track_artist' : 'artist'] + ' feat. ' + matches[1];
			}
			addArtists(1, matches[1]);
			addMessage('featured artist(s) in track title (#' + iter.track_number + ': ' + iter.title + ')', 'warning');
			iter.title = iter.title.replace(rx, '');
		  });
		  if (!iter.remixer && (matches = remixParsers.slice(4).reduce((acc, rx) => acc || rx.exec(iter.title), null)) != null)
			addArtists(2, matches[1].replace(/\b\d{4}\b/g, '').replace(/\s{2,}/g, ' ').trim());
		}
		if (isClassical && !iter.composer && /^([^\(\)\[\]\{\},:]+?)(?:\s*\((?:\d{4}\s*-|b\.)\s*\d{4}\))/.test(iter.disc_subtitle)) {
		  //track.composer = RegExp.$1;
		  addArtists(3, RegExp.$1);
		}
	  }
	  for (i = 0; i < Math.round(tracks.length / 2); ++i) splitAmpersands();
	  albumGuests = splitAmpersands(albumGuests);

	  function addArtists(ndx, _artists) {
		(typeof _artists == 'string' ? splitArtists(_artists) : Array.isArray(_artists) ? _artists : []).forEach(function(artist) {
		  artist = ndx != 0 ? strip(artist) : guessOtherArtists(artist);
		  if (artist.length > 0 && !pseudoArtistParsers.some(rx => rx.test(artist))
			  && !artists[ndx].includesCaseless(artist)
			  && !roleCollisions[ndx].some(n => artists[n].includesCaseless(artist))) artists[ndx].push(artist);
		});
	  }
	  function addTrackPerformers(_artists) {
		(typeof _artists == 'string' ? splitArtists(spliceGuests(_artists)) : Array.isArray(_artists) ? _artists : []).forEach(function(artist) {
		  artist = guessOtherArtists(artist);
		  if (artist.length > 0 && !pseudoArtistParsers.some(rx => rx.test(artist))
			&& !artists[0].includesCaseless(artist)
			&& (isVA || !artists[1].includesCaseless(artist))) artists[isVA ? 0 : 1].push(artist);
		});
	  }
	  function spliceGuests(str, level = 0) {
		(level > 0 ? featArtistParsers.slice(level) : featArtistParsers).forEach(function(rx, ndx) {
		  var matches = rx.exec(str);
		  if (matches != null && (level + ndx < 8
				|| splitArtists(matches[1]).every((artist, ndx) => looksLikeTrueName(artist, 1)))) {
			addArtists(1, matches[1]);
			str = str.replace(rx, '');
		  }
		});
		return str;
	  }
	  function guessOtherArtists(name) {
		otherArtistsParsers.forEach(function(it) {
		  if (!it[0].test(name)) return;
		  addArtists(it[1], RegExp.$2);
		  name = RegExp.$1;
		});
		return strip(name);
	  }
	  function splitAmpersands(_artists = undefined) {
		if (_artists !== undefined) {
		  let result;
		  if (typeof _artists == 'string') result = splitArtists(_artists);
		  	else if (Array.isArray(_artists)) result = Array.from(_artists); else return [];
		  splitInternal(result);
		  return result;
		}
		for (let ndx = 0; ndx < artists.length; ++ndx) splitInternal(artists[ndx], roleCollisions[ndx]);

		function splitInternal(refArr, roleCollisions) {
		  ampersandParsers.forEach(function(ampersandParser) {
			for (var i = refArr.length; i > 0; --i) {
			  var j = refArr[i - 1].split(ampersandParser).map(strip);
			  if (j.length <= 1 || !j.some(it1 => artists.some(it2 => it2.includesCaseless(it1)))
				  && !j.every(looksLikeTrueName) || getSiteArtist(refArr[i - 1])) continue;
			  refArr.splice(i - 1, 1, ...j.filter(function(artist) {
				return !refArr.includesCaseless(artist) && !pseudoArtistParsers.some(rx => rx.test(artist))
				  && (!Array.isArray(roleCollisions) || !roleCollisions.some(n => artists[n].includesCaseless(artist)));
			  }));
			}
		  });
		}
	  }
	  function getArtists(trackArtist) {
		if (!trackArtist || typeof trackArtist != 'string') trackArtist = '';
		otherArtistsParsers.forEach(it => { if (it[0].test(trackArtist)) trackArtist = RegExp.$1 });
		var result = [[], []];
		featArtistParsers.forEach(function(rx, ndx) {
		  if ((matches = rx.exec(trackArtist)) == null || ndx >= 7 && !looksLikeTrueName(matches[1], 1)) return;
		  splitAmpersands(matches[1]).forEach(artist => { result[1].pushUniqueCaseless(artist) });
		  trackArtist = trackArtist.replace(rx, '');
		});
		splitAmpersands(trackArtist).forEach(artist => { result[0].pushUniqueCaseless(artist) });
		return result;
	  }
	  function realTrackArtist(trackArtist) {
		var result, trackArtists = getArtists(trackArtist);
		if (trackArtists[0].length > 0 && !artistsMatch(trackArtists, [
		  artists[0].filter(artist => !roleCollisions[0].some(n => artists[n].includesCaseless(artist))),
		  albumGuests.filter(guest => !roleCollisions[1].some(n => artists[n].includesCaseless(guest))),
		])) result = prefs.reformat_trackartist ? stringifyArtists(trackArtists) : trackArtist;
		return result;
	  }

	  if (elementWritable(document.getElementById('artist') || document.getElementById('artist_0'))) {
		let artistIndex = 0;
		const enSorter = /^(?:The)\s+/;
		catLoop: for (i = 0; i < artists.length; ++i) for (iter of artists[i]
			.filter(artist => !roleCollisions[i].some(n => artists[n].includesCaseless(artist)))
			.sort((a, b) => a.replace(enSorter, '').localeCompare(b.replace(enSorter, '')))) {
		  if (isUpload) {
			var id = 'artist';
			if (artistIndex > 0) id += '_' + artistIndex;
			while ((ref = document.getElementById(id)) == null) AddArtistField();
		  } else {
			while ((ref = document.querySelectorAll('input[name="artists[]"]')).length <= artistIndex) AddArtistField();
			ref = ref[artistIndex];
		  }
		  if (ref == null) throw new Error('Failed to allocate artist fields');
		  ref.value = iter;
		  ref.nextElementSibling.value = i + 1;
		  if (++artistIndex >= 200) {
			addMessage('Site limit of artist entries (200) reached, some artists will be missing from group artist list (this won\'t affect tracklist)', 'notice');
			break catLoop;
		  }
		}
		if (overwrite && artistIndex > 0) while (document.getElementById('artist_' + artistIndex) != null) {
		  RemoveArtistField();
		}
	  }
	  // Processing album title
	  let album = release.album;
	  [ // Release type
		[/\s+(?:\(Single\)|\[Single\]|(?:[\-\−\—\–]\s+)Single)$/i, 'Single', true, true],
		[/\s+(?:\(EP\)|\[EP\]|(?:-\s+)?EP)$/, 'EP', true, true],
		[/(?:^(?:Live)\s+(?:[aA]t|[Ii]n|[Ff]rom)\b|^Directo?\s+[Ee]n\b|\bUnplugged\b|\b(?:Acoustic\s+Stage|In\s+Concert)\b|\s+(?:Live)$)/, 'Live album', false, false],
		[/\s+(?:\((?:Live|En\s+directo?|(?:Ao|En)\s+Vivo)\b[^\(\)]*\)|(?:[\-\−\—\–]\s+)(?:Live|En\s+Directo|(?:Ao|En)\s+Vivo))$/i, 'Live album', false, false],
		[/\s+\[(?:Live|En\s+directo?|(?:Ao|En)\s+Vivo)\b[^\[\]]*\]$/i, 'Live album', false, false],
		[/\S(?::|\s+[\-\−\—\–])\s+(?:Live|En\s+directo?|(?:Ao|En)\s+Vivo)\b/i, 'Live album', false, false],
		[/\b(?:(?:Best\s+Of|Greatest\s+Hits|Complete\s+(.+?\s+)?(?:Albums|Recordings))\b|Collection$)|^The(\s+\w+)+Years$|(?:^|[\:\-]\s+)(?:(?:The\s+)Essential)\b|\b(?:19|20)\d{2}(?:\s*[\-\−\—\–]\s*|\s+(?:to)\s+)(?:19|20)\d{2}\b/i, 'Anthology', false, false],
		[/\s+(?:\((?:Anthology|Rarities)\)|\[(?:Anthology|Rarities)\])/i, 'Anthology', false, false],
		[/\s+(?:\(Bootleg\)|\[Bootleg\]|(?:[\-\−\—\–]\s+)?Bootleg)$/i, 'Bootleg', false, true],
		[/\s+(?:\([^\(\)]*\b(?:Remix(?:es)?)\)|\[[^\[\]]*\b(?:Remix(?:es)?)\]|(?:[\-\−\—\–]\s+)?Remix(?:es)?)$/i, 'Remix', false, false],
		[/\s+(?:\(Mixtape\)|\[Mixtape\]|(?:[\-\−\—\–]\s+)?Mixtape)$/i, 'Mixtape', false, true],
		[/\s+(?:\(Demos?\)|\[Demos?\]|(?:[\-\−\—\–]\s+)?Demos?)$/i, 'Demo', false, true],
		[/\s+(?:\(Concert\s+Recording\)|\[Concert\s+Recording\]|(?:[\-\−\—\–]\s+)Concert\s+Recording)$/i, 'Concert Recording', false, true],
		[/\s+(?:\(DJ\s+Mix\)|\[DJ\s+Mix\]|(?:[\-\−\—\–]\s+)?DJ\s+Mix)$/i, 'DJ Mix', false, true],
		[/\s+(?:\(Interview\)|\[Interview\]|(?:[\-\−\—\–]\s+)?Interview)$/i, 'Interview', false, false],
	  ].forEach(function(it) {
		if ((matches = it[0].exec(album)) == null) return;
		if (it[2] || !releaseType) releaseType = getReleaseTypeValue(it[1]);
		if (it[3]) album = album.slice(0, matches.index);
	  });
	  rx = '\\b(?:Soundtrack|Score|Motion\\s+Picture|Series|Television|Original(?:\\s+\\w+)?\\s+Cast|Music\\s+from|(?:Musique|Bande)\\s+originale)\\b';
	  if (releaseType == getReleaseTypeValue('Soundtrack')
			|| reInParenthesis(rx).test(album) || reInBrackets(rx).test(album)) {
		if (!releaseType) releaseType = getReleaseTypeValue('Soundtrack');
		tags.add('score');
		composerEmphasis = true;
	  }
	  if (!releaseType && remixParsers.some(rx => rx.test(release.album))) releaseType = getReleaseTypeValue('Remix');
	  if (!editionTitle && !isRequestNew && !isRequestEdit) [ // Edition
		/\s+\(((?:Remaster(?:ed)?|Remasterizado|Remasterisée|Reissued?|Deluxe|Enhanced|Expanded|Limited|Version|\d+th\s+Anniversary)\b[^\(\)]*|[^\(\)]*\b(?:Edition|Version|Promo|Release|Édition|Reissue))\)$/i,
		/\s+\[((?:Remaster(?:ed)?|Remasterizado|Remasterisée|Reissued?|Deluxe|Enhanced|Expanded|Limited|Version|\d+th\s+Anniversary)\b[^\[\]]*|[^\[\]]*\b(?:Edition|Version|Promo|Release|Édition|Reissue))\]$/i,
		/\s+-\s+([^\[\]\(\)\-\−\—\–]*\b(?:(?:Remaster(?:ed)?|Remasterizado|Remasterisée|Bonus\s+Track)\b[^\[\]\(\)\-\−\—\–]*|Reissued?|Edition|Version|Promo|Enhanced|Release|Édition))$/i,
	  ].forEach(function(rx) {
		if ((matches = rx.exec(album)) == null || release.album_year > 0 && release.album_year == releaseYear
			&& /\b(?:remaster|reissue|anniversary)\b/i.test(matches[1])) return;
		album = album.slice(0, matches.index);
		editionTitle = matches[1];
	  });
	  [ // Media
		[/\s+(?:\[(?:LP|Vinyl|12"|7")\]|\((?:LP|Vinyl|12"|7")\))$/, 'Vinyl'],
		[/\s+(?:\[SA-?CD\]|\(SA-?CD\))$/, 'SACD'],
		[/\s+(?:\[(?:Blu[\s\-\−\—\–]?Ray|BD|BRD?)\]|\((?:Blu[\s\-\−\—\–]?Ray|BD|BRD?)\))$/, isOPS ? 'BD' : 'Blu-Ray'],
		[/\s+(?:\[DVD(?:-?A)?\]|\(DVD(?:-?A)?\))$/, 'DVD'],
	  ].forEach(function(it) {
		if ((matches = it[0].exec(album)) == null) return;
		media = it[1];
		album = album.slice(0, matches.index);
	  });
	  if (elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]')))
		ref.value = prefs.fix_capitalization ? album.properlyFixCapitalization(language) : album;
	  if (yadg_prefil) yadg_prefil += ' ';
	  yadg_prefil += album;
	  if (elementWritable(ref = document.getElementById('yadg_input'))) {
		ref.value = yadg_prefil || '';
		if (yadg_prefil && (ref = document.getElementById('yadg_submit')) != null && !ref.disabled) ref.click();
	  }
	  if (!release.album_year) release.album_year = parseInt(getHomoIdentifier('PUBYEAR')) || undefined;
	  if (elementWritable(ref = document.getElementById('year'))) {
		ref.value = release.album_year || '';
	  }
	  if (elementWritable(ref = document.getElementById('remaster_year'))
		  || !isUpload && i > 0 && (ref = document.querySelector('input[name="year"]')) != null && !ref.disabled)
		ref.value = releaseYear || '';
	  //if (!editionTitle && tracks.every(it => it.identifiers.EXPLICIT == 0)) editionTitle = 'Clean' + (editionTitle ? ' / ' + editionTitle : '');
	  [
		/\s+\(([^\(\)]+)\)\s*$/,
		/\s+\[([^\[\]]+)\]\s*$/,
		/\s+\{([^\{\}]+)\}\s*$/,
	  ].forEach(function(rx) {
		var version = tracks.map(track => rx.test(track.title) ? RegExp.$1 : null);
		if (!(version = version.homogeneous() && version[0])) return;
		if (!editionTitle && /\b(?:Remastered|Remasterisée|Remasterizado|Acoustic|Instrumental)\b/i.test(version)
			&& releaseType != getReleaseTypeValue('Single')) editionTitle = version;
		if (!releaseType && /^(?:Live|En\s+directo?|(?:Ao|En)\s+Vivo)\b/i.test(version))
		  releaseType = getReleaseTypeValue('Live album');
	  });
	  if (!releaseType && tracks.length > 1
		  && tracks.every(track => /\s+(?:-\s+)?(?:Live|En\s+directo?|(?:Ao|En)\s+Vivo)$/i.test(track.title)))
		releaseType = getReleaseTypeValue('Live album');
	  let dualMono = getHomoIdentifier('DUALMONO') == 1 || /\b(?:Mono)\b/i.test(release.channel_mode);
	  if (elementWritable(ref = document.getElementById('remaster_title'))) {
		ref.value = editionTitle || '';
		if (dualMono) if (ref.value) ref.value += ' / MONO'; else ref.value = 'MONO';
	  }
	  if (elementWritable(ref = document.getElementById('remaster_record_label')
			|| document.querySelector('input[name="recordlabel"]')))
		ref.value = release.label ? (function() {
		  if (prefs.selfrelease_label && (!isVA && release.label.toLowerCase() == release.artist.toLowerCase()
				|| selfReleaseParsers.some(rx => rx.test(release.label)))) return prefs.selfrelease_label;
		  return release.label.split(/\s*[\;\/]\s*|\s+\-\s+/)
			.map(label => labelSubstitutes.reduce((l, def) => l.replace(...def), label)).filter(Boolean).join(' / ');
		})() : '';
	  if (elementWritable(ref = document.getElementById('remaster_catalogue_number')
			|| document.querySelector('input[name="cataloguenumber"]')))
		ref.value = release.catalogs.length >= 1
			&& release.catalogs.map(it => it.replace(/\s*;\s*/g, ' / ')).join(' / ') || barCode || '';
	  var scene = getHomoIdentifier('SCENE');
	  if (isUpload && scene != undefined && (ref = document.getElementById('scene')) != null && !ref.disabled) try {
		ref.checked = eval(scene.toLowerCase());
	  } catch(e) { console.warn('Invalid SCENE value (' + scene + ')') }
	  var br_isSet = (ref = document.getElementById('bitrate')) != null && ref.value;
	  if (elementWritable(ref = document.getElementById('format'))) {
		ref.value = allowedFormats.includes(release.codec) ? release.codec : (isRED ? '' : '---');
		ref.onchange(); //exec(function() { Format() });
	  }
	  if (isRequestNew) if (prefs.always_request_perfect_flac) reqSelectFormats('FLAC');
			else if (release.codec) reqSelectFormats(release.codec);
	  var encoding;
	  if (release.encoding == 'lossless') {
		if (release.bitdepths.includes(24)) encoding = '24bit Lossless';
			else if (release.bitdepths.some(bitdepth => bitdepth > 0)) encoding = 'Lossless';
	  } else if (release.encoding == 'lossy' && release.bitrates.length > 0) {
		let lame_version = release.codec == 'MP3' && /^LAME(\d+)\.(\d+)/i.test(release.vendor) ?
			parseInt(RegExp.$1) * 1000 + parseInt(RegExp.$2) : undefined;
		if (release.codec == 'MP3' && release.codec_profile == 'VBR V0') {
		  encoding = lame_version >= 3094 ? 'V0 (VBR)' : 'APX (VBR)'
		} else if (release.codec == 'MP3' && release.codec_profile == 'VBR V1') {
		  encoding = 'V1 (VBR)'
		} else if (release.codec == 'MP3' && release.codec_profile == 'VBR V2') {
		  encoding = lame_version >= 3094 ? encoding = 'V2 (VBR)' : 'APS (VBR)'
		} else if (release.bitrates.length == 1 && [192, 256, 320].includes(Math.round(release.bitrates[0]))) {
		  encoding = Math.round(release.bitrates[0]);
		} else encoding = 'Other';
	  }
	  if ((ref = document.getElementById('bitrate')) != null && !ref.disabled && (overwrite || !br_isSet)) {
		ref.value = encoding || '';
		ref.onchange(); //exec(function() { Bitrate() });
		if (encoding == 'Other' && (ref = document.getElementById('other_bitrate')) != null) {
		  ref.value = Math.round(release.bitrates.length == 1 ? release.bitrates[0] : albumBitrate);
		  if ((ref = document.getElementById('vbr')) != null) ref.checked = release.bitrates.length > 1;
		}
	  }
	  if (isRequestNew) {
		if (prefs.always_request_perfect_flac) {
		  reqSelectBitrates('Lossless', '24bit Lossless');
		} else if (encoding) reqSelectBitrates(encoding);
	  }
	  if (release.media) media = estimateMedia(release.media) || media;
	  const vinylTest = /^((?:Vinyl|LP) rip by\s+)(.*)$/im,
			vinyltrackParser = /^([A-Z])(?:[\-\.\s]?((\d+)(\.?\S+)?))?$/i;
	  if (!media) {
		if (tracks.every(isRedBook)) {
		  addMessage('media not determined - CD estimated', 'info');
		  media = 'CD';
		} else if (tracks.every(track => vinyltrackParser.test(track.track_number))) {
		  addMessage('media not determined - vinyl estimated', 'info');
		  media = 'Vinyl';
		} else if (tracks.some(t => t.bitdepth > 16 || (t.samplerate > 0 && t.samplerate != 44100)
			|| t.samples > 0 && t.samples % 588 != 0)) addMessage('media not determined - NOT CD', 'info');
	  } else if (media != 'CD' && tracks.every(isRedBook))
		addMessage('Playlist fulfils redbook standard (' + media + ')', 'info');
	  if (elementWritable(ref = document.getElementById('media')))
		ref.value = media || !tracks.some(notRedBook) && prefs.default_medium || (isRED ? '' : '---');
	  if (media == 'Vinyl') {
		let badTracks = tracks.filter(track => !vinyltrackParser.test(track.track_number) && isNaN(parseInt(track.track_number)));
		if (badTracks.length > 0) addMessage('at one or more vinyl tracks having invalid track# format: ' +
			badTracks.map(track => track.track_number), 'warning');
	  }
	  if (isRequestNew) {
		if (prefs.always_request_perfect_flac) reqSelectMedias('WEB', 'CD', isOPS ? 'BD' : 'Blu-Ray', 'DVD', 'SACD')
			else if (media) reqSelectMedias(media);
	  }
	  function isRedBook(track) {
		return track.bitdepth == 16 && track.samplerate == 44100 && track.channels == 2
			&& track.samples > 0 && track.samples % (44100 / 75) == 0;
	  }
	  function notRedBook(track) {
		return track.bitdepth && track.bitdepth != 16 || track.samplerate && track.samplerate != 44100
			|| track.channels && track.channels != 2 || track.samples && track.samples % 588 != 0;
	  }
	  if (tracks.every(it => it.identifiers.ORIGINALFORMAT && it.identifiers.ORIGINALFORMAT.includes('DSD')))
		isFromDSD = true;
	  // Release type
	  if (!releaseType/* || isCompilation)*/)
		if (isVA) releaseType = getReleaseTypeValue('Compilation');
			else if (isCompilation || totalTime > 0 && totalTime >= prefs.anthology_threshold)
		  		releaseType = getReleaseTypeValue('Anthology');
	  if ((ref = document.getElementById('releasetype')) != null)
		if (!ref.disabled && (overwrite || ref.value == 0 || ref.value == '---'))
			ref.value = releaseType || getReleaseTypeValue('Album');
	  // Image
	  if (elementWritable(document.getElementById('image') || document.querySelector('input[name="image"]')))
		(release.coverUrls.length > 0 ? setCover(release.coverUrls[0]) : Promise.reject('No cover URL'))
			.catch(getCoverOnline).catch(searchCoverOnline);
	  // Tags
	  if (prefs.estimate_decade_tag && (!totalTime || totalTime < 2 * 60 * 60) && !isClassical && release.album_year > 1900
		  && (!releaseType || ['Album', 'Soundtrack', 'EP', 'Single', 'Mixtape', 'Interview', 'Demo']
			.some(rt => releaseType == getReleaseTypeValue(rt)))) //&& !/\b(?:Remaster(?:ed)?|Remasterizado|Remasterisée|Reissue|Anniversary|Collector(?:'?s)?)\b/i.test(editionTitle)*/)
		tags.add(Math.floor(release.album_year / 10) * 10 + 's'); // experimental
	  if (release.country) {
		if (!excludedCountries.some(it => it.test(release.country))) tags.add(release.country);
	  }
	  if (!composerEmphasis && tracks.every(track => track.identifiers.HASLYRICS == 0)) tags.add('instrumental');
	  if (elementWritable(ref = document.getElementById('tags'))) {
		ref.value = tags.toString();
		if (artists[0].length == 1 && prefs.fetch_tags_from_artist > 0) setTimeout(function() {
		  var artist = getSiteArtist(artists[0][0]);
		  if (!artist) return;
		  tags.add(...artist.tags.sort((a, b) => b.count - a.count).map(it => it.name)
			.slice(0, prefs.fetch_tags_from_artist));
		  var ref = document.getElementById('tags');
		  ref.value = tags.toString();
		}, 3000);
	  }
	  if (!composerEmphasis/* && release.genres.length > 0*/ && !prefs.keep_meaningles_composers) {
		document.querySelectorAll('input[name="artists[]"]').forEach(function(i) {
		  if (['4', '5'].includes(i.nextElementSibling.value)) i.value = '';
		});
	  }

	  const doubleParsParsers = [
		/\(+(\([^\(\)]*\))\)+/,
		/\[+(\[[^\[\]]*\])\]+/,
		/\{+(\{[^\{\}]*\})\}+/,
	  ];
	  tracks.forEach(function(track) {
		doubleParsParsers.forEach(function(rx) {
		  if (!rx.test(track.title)) return;
		  addMessage('doubled parentheses in track #' + track.track_number + ' title ("' + track.title + '")', 'warning');
		  //track.title.replace(rx, RegExp.$1);
		});
	  });
	  if (tracks.length > 1 && tracks.map(track => track.title).homogeneous())
		addMessage('all tracks having same title: ' + tracks[0].title, 'warning');
	  if (prefs.check_logs && isUpload && !isOPS) findPreviousUploads();
	  if ((ref = document.querySelector('tr#autofill_tr > td > select')) != null) {
		if (i = getHomoIdentifier('DISCOGS_ID')) {
		  ref.value = 'discogs';
		  ref.onchange();
		  if (elementWritable(ref = document.getElementById('discogs'))) ref.value = i;
		} else if (i = getHomoIdentifier('MBID')) {
		  ref.value = 'musicbrainz';
		  ref.onchange();
		  if (elementWritable(ref = document.getElementById('musicbrainz'))) ref.value = i;
		}
	  }
	  // Album description
	  if (!media && (ref = document.getElementById('media')) != null && ref.value && ref.value != '---')
		media = ref.value;
	  const classicalWorkParsers = [
		/^(.*?\S):\s+(.+)$/,
		/^(.+?)(?::|\s-)\s+([CDILMVX]+(?:\.|\s-)\s+.+)$/,
		/^(.+?)(?::|\s-)\s+((?:No\.\s*)?\d+(?:\.|\s-)\s+.+)$/,
	  ];
	  var description;
	  if (isRequestNew || isRequestEdit) { // request
		description = [];
		if (!isNaN(releaseDate) && !/^\s*\d{4}\s*$/.test(release.release_date)) {
		  let today = new Date().getDateValue();
		  description.push((releaseDate.getDateValue() < today ? 'Released' : 'Releasing') + ' ' + releaseDate.toDateString());
		  if (prefs.upcoming_tags && releaseDate.getDateValue() >= today
			  && (ref = document.getElementById('tags')) != null && !ref.disabled) {
			let tags = new TagManager(ref.value);
			tags.add(prefs.upcoming_tags);
			ref.value = tags.toString();
		  }
		}
		if (!prefs.include_tracklist_in_request) {
		  let summary = '';
		  if (release.totalDiscs > 1) summary += release.totalDiscs + ' discs, ';
		  summary += tracks.length + ' track'; if (tracks.length > 1) summary += 's';
		  if (totalTime > 0) summary += ', ' + makeTimeString(totalTime);
		  description.push(summary);
		}
		if (sourceUrl || release.urls.length > 0) description.push(getUrls());
		if (release.catalogs.length == 1 && /^\d{10,}$/.test(release.catalogs[0]) || /^\d{10,}$/.test(barCode)) {
		  description.push('[url=https://www.google.com/search?q=' + RegExp.lastMatch + ']Find more stores...[/url]');
		}
		if (prefs.include_tracklist_in_request) description.push(genPlaylist());
		if (release.descriptions.length > 0) Array.prototype.push.apply(description, release.descriptions);
		description = genAlbumHeader() + description.join('\n\n');
		if (description.length > 0) {
		  ref = document.getElementById('description') || document.querySelector('textarea[name="description"]');
		  if (elementWritable(ref)) {
			ref.value = description;
		  } else if (isRequestEdit && ref != null && !ref.disabled) {
			ref.value = ref.value.length > 0 ? ref.value + '\n\n' + description : ref.value = description;
			preview(0);
		  }
		}
		if (isRequestNew && prefs.request_default_bounty > 0) {
		  let amount = prefs.request_default_bounty < 1024 ? prefs.request_default_bounty : prefs.request_default_bounty / 1024;
		  if ((ref = document.getElementById('amount_box')) != null && !ref.disabled) ref.value = amount;
		  if ((ref = document.getElementById('unit')) != null && !ref.disabled) {
			ref.value = prefs.request_default_bounty < 1024 ? 'mb' : 'gb';
		  }
		  try { Calculate() } catch(e) { /* Orpheus bug void handler */ }
		}
	  } else { // upload
		description = '';
		if (prefs.bpm_summary && albumBPM > 0) description += '\n\nAverage album BPM: [code]' + albumBPM + '[/code]';
// 		if (!isNaN(releaseDate)) {
// 		  if (!isNaN(rd)) description = '\n\nRelease date: ' + releaseDate.toDateString();
// 		}
		let vinylRipInfo;
		if (release.descriptions.length > 0) {
		  description += '\n\n';
		  if (isRED && prefs.tracklist_style == 3) description += '[pad=0|20]';
		  if (release.descriptions.length == 1 && release.descriptions[0]
			  && (matches = vinylTest.exec(release.descriptions[0])) != null) {
			vinylRipInfo = release.descriptions[0].slice(matches.index).trim().split(/(?:[ \t]*\r?\n)+/);
			description += release.descriptions[0].slice(0, matches.index).trim();
		  } else description += release.descriptions.join('\n\n');
		  if (isRED && prefs.tracklist_style == 3) description += '[/pad]';
		}
		let oa = fetchOnlineAdditions().then(t => { description += '\n\n' + t }, reason => undefined);
		if (elementWritable(ref = document.getElementById('album_desc'))) {
		  ref.value = genPlaylist();
		  finalizeDesc(ref);
		}
		if ((ref = document.getElementById('body') || document.querySelector('textarea[name="body"]')) != null && !ref.disabled) {
		  if (overwrite || ref.value.length == 0) ref.value = genPlaylist(); else {
			let eT;
			if (editionTitle) {
			  eT = prefs.fix_capitalization ? editionTitle.properlyFixCapitalization(language) : editionTitle;
			  if (releaseYear > 0) eT += ' (' + releaseYear + ')';
			}
			ref.value += '\n\n' + genPlaylist(false, false, eT);
		  }
		  finalizeDesc(ref);
		}
		function finalizeDesc(elem) {
		  oa.then(function() {
			if (description) elem.value += description;
			preview(0);
		  });
		}
		// Release description
		if (elementWritable(ref = document.getElementById('release_samplerate'))) {
		  ref.value = Object.keys(release.sampleRates).length == 1 && Object.keys(release.sampleRates)[0] ?
			Math.floor(Object.keys(release.sampleRates)[0] / 1000) :
		  		Object.keys(release.sampleRates).length > 1 || isNaN(Object.keys(release.sampleRates)[0]) ? '999' : '';
		}
		let lineage = '', rlsDesc = '';
		let drInfo = '[hide=DR' + (release.albumdrs.length == 1 ? release.albumdrs[0] : '') + '][pre][/pre]';
		let hasSR = Object.keys(release.sampleRates).length > 0;
		let srInfo = hasSR ? Object.keys(release.sampleRates).filter(samplerate => samplerate > 0)
			.sort((a, b) => release.sampleRates[b] - release.sampleRates[a])
			.map(f => f / 1000).join('/') + ' kHz' : '';
		if (['BD', 'Blu-Ray', 'DVD', 'SACD'].includes(media)) {
		  if (!isNWCD) rlsDesc = srInfo;
		  addChannelInfo();
		  if (media == 'SACD' || isFromDSD) addDSDInfo();
		  if (prefs.cleanup_descriptions) addDRInfo();
		  //addRGInfo();
		  addHybridInfo();
		  drInfo += '[/hide]';
		} else if (media == 'Vinyl') {
		  let hassr = hasSR && (!isNWCD || Object.keys(release.sampleRates).length > 1);
		  if (hassr) lineage = srInfo + ' ';
		  if (vinylRipInfo) {
			if (vinylTest.test(vinylRipInfo[0]) && RegExp.$2.toLowerCase() != 'unknown')
			  vinylRipInfo[0] = vinylRipInfo[0].replace(vinylTest, '$1[color=blue]$2[/color]');
			if (hassr) vinylRipInfo[0] = vinylRipInfo[0].replace(/^Vinyl\b/, 'vinyl');
			lineage += vinylRipInfo[0];
			lineage += '\n\n[u]Lineage:[/u]' + vinylRipInfo.slice(1).map(l => '\n' + [
			  // RuTracker translation
			  ['Код класса состояния винила', 'Vinyl condition class'],
			  ['Устройство воспроизведения', 'Turntable'],
			  ['Головка звукоснимателя', 'Cartridge'],
			  ['Картридж', 'Cartridge'],
			  ['Предварительный усилитель', 'Preamplifier'],
			  ['АЦП', 'ADC'],
			  ['Программа-оцифровщик', 'Software'],
			  ['Обработка звука', 'Audio post-processing'],
			  ['Обработка', 'Post-processing'],
			].reduce((acc, it) => acc.replace(...it), l)).join('');
		  } else lineage += `${hassr ? ' vinyl' : 'Vinyl'} rip by [color=blue][/color]\n\n[u]Lineage:[/u]\n`;
		  let imgs = '\n[img][/img]'.repeat(8);
		  if (!isNWCD) drInfo += '\n' + imgs; else lineage += '\n\n[hide]' + imgs.slice(1) + '[/hide]';
		  drInfo += '[/hide]';
		} else if (tracks.some(track => track.bitdepth > 16)) { // other Hi-Res
		  if (!isNWCD || Object.keys(release.sampleRates).length > 1) rlsDesc = srInfo;
		  if (release.channels && release.channels != 2 || dualMono) addChannelInfo();
		  if (isFromDSD) addDSDInfo();
		  if (!isFromDSD || prefs.cleanup_descriptions) addDRInfo();
		  //addRGInfo();
		  addHybridInfo();
		  if (isFromDSD || prefs.cleanup_descriptions || Object.keys(release.sampleRates).length == 1
			  && Object.keys(release.sampleRates)[0] == 88200) drInfo += '[/hide]'; else drInfo = null;
		} else { // 16bit and lossy
		  if (Object.keys(release.sampleRates).some(f => f != 44100)) rlsDesc = srInfo;
		  if (release.channels && release.channels != 2 || dualMono) addChannelInfo();
		  addDRInfo();
		  //addRGInfo();
		  if (prefs.cleanup_descriptions) drInfo += '[/hide]'; else drInfo = null;
		  if (release.codec == 'MP3' && release.vendor) {
			// TODO: parse mp3 vendor string
		  } else if (['AAC', 'Opus', 'Vorbis'].includes(release.codec) && release.vendor) {
			let _encoder_settings = release.vendor;
			if (release.codec == 'AAC' && /^(?:qaac)\s+[\d\.]+/i.test(release.vendor)) {
			  let enc = [];
			  if (matches = release.vendor.match(/\bqaac\s+([\d\.]+)\b/i)) enc[0] = matches[1];
			  if (matches = release.vendor.match(/\bCoreAudioToolbox\s+([\d\.]+)\b/i)) enc[1] = matches[1];
			  if (matches = release.vendor.match(/\b(AAC-\S+)\s+Encoder\b/i)) enc[2] = matches[1];
			  if (matches = release.vendor.match(/\b([TC]VBR|ABR|CBR)\s+(\S+)\b/)) { enc[3] = matches[1]; enc[4] = matches[2]; }
			  if (matches = release.vendor.match(/\bQuality\s+(\d+)\b/i)) enc[5] = matches[1];
			  _encoder_settings = 'Converted by Apple\'s ' + enc[2] + ' encoder (' + enc[3] + '-' + enc[4] + ')';
			}
			lineage = _encoder_settings;
		  }
		}
		function addDSDInfo() {
		  var nfo = ' DSD64';
		  if (prefs.sacd_decoder) nfo += ' using ' + prefs.sacd_decoder;
		  nfo += '\nOutput gain: [code]+0dB[/code]';
		  if (isNWCD) lineage = 'From' + nfo; else {
			if (rlsDesc.length > 0) rlsDesc += ' from'; else rlsDesc = 'From';
			rlsDesc += nfo;
		  }
		}
		function addDRInfo() {
		  if (release.albumdrs.length < 1 || document.getElementById('release_dynamicrange') != null) return;
		  var nfo = 'DR' + release.albumdrs[0];
		  if (release.albumdrs[0] < 4) nfo = '[color=red]' + nfo + '[/color]';
		  if (rlsDesc.length > 0) rlsDesc += ' | ';
		  rlsDesc += nfo;
		}
		function addRGInfo() {
		  if (release.albumgains.length <= 0) return;
		  if (rlsDesc.length > 0) rlsDesc += ' | ';
		  rlsDesc += 'RG'; //rlsDesc += 'RG ' + albumgains[0];
		}
		function addChannelInfo() {
		  if (release.channel_mode) var chi = release.channel_mode;
		  else if (getHomoIdentifier('DUAL_MONO')) chi = 'dual mono';
		  else if (release.channels) chi = getChanString(release.channels);
		  if (!chi) return;
		  if (rlsDesc.length > 0) rlsDesc += ', '; else rlsDesc = 'Channels configuration: ';
		  rlsDesc += chi;
		}
		function addHybridInfo() {
		  if (release.bitdepths.length > 1) release.bitdepths.filter(bitdepth => bitdepth != 24).forEach(function(bitdepth) {
			var hybrid_tracks = tracks.filter(it => it.bitdepth == bitdepth).sort(trackComparer).map(function(it) {
			  return (release.totalDiscs > 1 && it.disc_number ? it.disc_number + '-' : '') + it.track_number;
			});
			if (hybrid_tracks.length < 1) return;
			if (rlsDesc.length > 0) rlsDesc += '\n';
			rlsDesc += 'Note: track';
			if (hybrid_tracks.length > 1) rlsDesc += 's';
			rlsDesc += ' #' + hybrid_tracks.join(', ') +
			  (hybrid_tracks.length > 1 ? ' are' : ' is') + ' ' + bitdepth + 'bit lossless';
		  });
		}
		function addRlsDate() {
		  if (prefs.insert_release_date && !isNaN(releaseDate) && !/^\s*\d{4}\s*$/.test(release.release_date))
			rlsDesc.push('Released ' + releaseDate.toDateString());
		}
		rlsDesc = rlsDesc.length > 0 ? [rlsDesc] : [];
		if ((ref = document.getElementById('release_lineage')) != null) {
		  lineage = lineage ? [lineage] : [];
		  if (drInfo) rlsDesc.push(drInfo);
		  addRlsDate();
		  if (sourceUrl || release.urls.length > 0) lineage.push(getUrls());
		  if (elementWritable(ref)) {
			ref.value = lineage.join('\n\n');
			preview(1);
		  }
		} else {
		  if (lineage.length > 0) rlsDesc.push(lineage);
		  if (drInfo) rlsDesc.push(drInfo);
		  addRlsDate();
		  if (sourceUrl || release.urls.length > 0) rlsDesc.push(getUrls());
		}
		if (elementWritable(ref = document.getElementById('release_desc'))) {
		  ref.value = rlsDesc.join('\n\n');
		  if (rlsDesc.length > 0) preview(isNWCD ? 2 : 1);
		}
		if (release.encoding == 'lossless' && Object.keys(release.sampleRates).length <= 1
			&& release.bitdepths.length <= 1 //&& release.bitdepths.some(bitdepth => bitdepth >= 24)
			&& document.getElementById('release_desc') != null) Promise.all(
		  release.dirpaths.map(dirPath => textFileReader(dirPath + '\\foo_dr.txt')
			.catch(reason => textFileReader(dirPath + '\\' + dirPath.replace(/^.*[\\\/]/, '') + '_log.txt')))
		).then(function(drlogs) {
		  let ref = document.getElementById('release_desc');
		  if (ref == null) throw 'Assertion failed: document.getElementById(\'release_desc\') != NULL';
		  const drExtractors = [
			/^(?:Official DR value):\s*(?:DR(\d+))\b/m, // foo_dynamic_range
			/^(?:Official EP\/Album DR):\s*(\d+)\b/m, // MAAT DROffline MkII
		  ];
		  let DRs = drlogs.map(function(drlog) {
			var dr = drExtractors.reduce((dr, rx) => dr != null && dr >= 0 ? dr
				: rx.test(drlog) ? parseInt(RegExp.$1) : null, null);
			if (dr != null && dr >= 0) return dr;
			let columnIndex;
			drlog.split(/\r?\n/).forEach(function(line) {
			  if (dr != null && dr >= 0) return;
			  let columns = line.trim().split(/\s*\|\s*/);
			  if (!(columnIndex >= 0)) columnIndex = columns.indexOf('DR (PMF)');
			  	else if (columnIndex >= 0 && /^\d+$/.test(columns[columnIndex])) dr = parseInt(columns[columnIndex]);
			});
			return dr != null && dr >= 0 ? dr : null;
		  });
		  let DRinfo = '[hide=DR';
		  if (DRs[0] != null && DRs[0] >= 0 && DRs.homogeneous()) DRinfo += DRs[0];
		  DRinfo += ']' + drlogs.map(foodr => '[pre]' + foodr + '[/pre]').join('\n');
		  if (/(\[hide=DR(\d+)?\]\[pre\])(\[\/pre\])/m.test(ref.value))
			ref.value = RegExp.leftContext + DRinfo + RegExp.rightContext;
		  else ref.value += '\n\n' + DRinfo + '[/hide]';
		}, function(reason) {
		  console.log(reason);
		  console.log('foo_dr.txt not exists or is forbidden to read ' +
			'(TM: Settings > Security > Allow scripts to access local files > All local files)');
		});
		if (elementWritable(ref = document.getElementById('release_dynamicrange')))
		  ref.value = release.albumdrs.length == 1 ? release.albumdrs[0] : '';
		// Compare to online source
		if (!onlineSource) {
		  if (prefs.assume_weblink && !sourceUrl && release.urls.length <= 0) addMessage('No lineage URL', 'notice');
		  onlineSource = sourceUrl || release.urls.length > 0 ?
			urlResolver(sourceUrl || release.urls[0]).then(sourceUrl => fetchOnline_Music(sourceUrl, true))
		  		: Promise.reject('no lineage URL');
		  onlineSource.then(completeFromOnlineSource);
		  if (prefs.check_integrity_online) onlineSource.catch(reason => lookupOnlineSource().then(function(result) {
			if (typeof result == 'object') return parseLastFm(result);
			if (urlParser.test(result)) return fetchOnline_Music(result, true);
			return Promise.reject('Unhandled format');
		  })).then(onlineCheck).catch(function(reason) {
			if (!media || media == 'WEB') tracks.forEach(function(track) {
			  if (!track.duration || track.duration < 29.6 || track.duration > 30.4) return;
			  addMessage('track ' + track.track_number + ' possible track preview', 'warning');
			});
		  });
		}
	  } // upload
	  if ((isUpload || isRequestNew) && prefs.find_relations) lookupMusicRelations();
	  if (ajaxRejects > 0 && ((ref = document.querySelector('input#artist')) != null && !ref.disabled
			&& (ref = document.querySelector('textarea#album_desc') || document.querySelector('textarea#description')) != null && !ref.disabled)) {
		let msg = (ajaxRejects > 1 ? `${ajaxRejects} artist queries were` : 'One artist query was') +
			' thrown due to Gazelle API FUP';
		try {
		  msg += '. Multiple artists not split correctly? => Redo filling in overwrite mode';
		  let delay = JSON.parse(window.localStorage[siteApiTimeframeStorageKey]).timeStamp +
			  10000 + gazelleApiFrameReserve - Date.now();
		  if (delay >= 0) {
			setTimeout(() => { addMessage('new AJAX timeframe for requery available', 'info') }, delay);
			msg += ' after ' + Math.ceil(delay / 1000) + 's';
		  }
		} catch(e) { console.error(e) }
		addMessage(msg, 'notice');
	  }
	  if (prefs.clean_on_apply) clipBoard.value = '';
	  for (let key in prefs) {
		if (typeof prefs[key] != 'function' && prefs[key] !== undefined) GM_setValue(key, prefs[key]);
	  }
	  if (Object.keys(siteArtistsCache).length > 0)
		sessionStorage[document.location.hostname + '.siteArtistsCache'] = JSON.stringify(siteArtistsCache);
	  if (notSiteArtistsCache.length > 0)
		sessionStorage[document.location.hostname + '.notSiteArtistsCache'] = JSON.stringify(notSiteArtistsCache);
	  return true;

	  // ---------------------------------------------------------------------------------------------------------------

	  function genPlaylist(pad = true, header = true, title = undefined) {
		var style = prefs.tracklist_style;
		if (style == 2) {
		  if (!tracks.every(track => track.duration)) style = 1;
		  else if (tracks.map(track => track.title).some(notMonospaced)
			|| tracks.map(track => track.track_artist).some(notMonospaced)
			|| composerEmphasis && tracks.map(track => track.composer).some(notMonospaced)) style = 3;
		}
		if (!(style > 0)) return null;
		if (!isRED) pad = false;
		let playlist = '';
		if (tracks.length > 1 || prefs.singles_conventional_format || isRequestNew || isRequestEdit) {
		  if (header) playlist += genAlbumHeader();
		  playlist += '[size=4][b][color=' + prefs.tracklist_head_color + ']' +
			(title || 'Tracklisting') + '[/color][/b][/size]';
		  playlist += '\n'; //'[hr]';
		  let lastDisc, lastSubtitle, lastClassicalWork, lastSide, vinylTrackWidth;
		  let block = 0, classicalWorks = new Map();
		  if (composerEmphasis /*isClassical*/ && !tracks.some(it => it.disc_subtitle)) {
			tracks.forEach(function(track) {
			  if (!track.composer) return;
			  (/*isClassical ? classicalWorkParsers : */classicalWorkParsers.slice(1)).forEach(function(classicalWorkParser) {
				if (track.classical_work || !classicalWorkParser.test(track.title)) return;
				classicalWorks.set(track.classical_work = RegExp.$1, { });
				track.classical_title = prefs.fix_capitalization ?
					RegExp.$2.properlyFixCapitalization(language) : RegExp.$2;
			  });
			});
			for (iter of classicalWorks.keys()) {
			  let work = tracks.filter(track => track.classical_work == iter);
			  if (work.length > 1 || tracks.every(track => track.classical_work)) {
				let classicalWork = classicalWorks.get(iter);
				if (work[0].track_artist && work[0].track_artist != release.artist && work.map(track => track.track_artist).homogeneous()) {
				  classicalWork.performer = realTrackArtist(work[0].track_artist);
				  if (work[0].conductor && work.map(track => track.conductor).homogeneous())
					classicalWork.conductor = work[0].conductor;
				}
				if (work[0].composer && release.composers.length > 1 && work.map(track => track.composer).homogeneous())
				  classicalWork.composer = work[0].composer;
			  } else {
				work.forEach(function(track) {
				  delete track.classical_work;
				  delete track.classical_title;
				});
				classicalWorks.delete(iter);
			  }
			}
		  }
		  let track, duration, volumes = new Map(tracks.map(it => [it.disc_number, undefined])),
			  tnOffset = 0, ignoreTrackartist = false, ignoreComposer = false;
		  volumes.forEach(function(val, key) {
			volumes.set(key, new Set(tracks.filter(it => it.disc_number == key).map(it => it.disc_subtitle)).size)
		  });
		  if (!tracks.every(it => !isNaN(parseInt(it.track_number.toString())))
			  && !tracks.every(it => vinyltrackParser.test(it.track_number.toString().toUpperCase()))) {
			addMessage('inconsistent tracks numbering (' + tracks.map(it => it.track_number) + ')', 'warning');
		  }
		  vinylTrackWidth = tracks.reduce((acc, it) => vinyltrackParser.test(it.track_number.toString().toUpperCase()) ?
			Math.max(parseInt(RegExp.$3) || 0, acc) : acc, -1);
		  if (vinylTrackWidth >= 0) {
			vinylTrackWidth = vinylTrackWidth.toString().length;
			tracks.forEach(function(track) {
			  if ((matches = vinyltrackParser.exec(track.track_number.toString())) == null) return;
			  track.track_number = matches[1].toUpperCase();
			  if (matches[3]) track.track_number += matches[3].padStart(vinylTrackWidth, '0');
			  if (matches[4]) track.track_number += matches[4];
			});
			++vinylTrackWidth;
		  }
		  if (release.totalDiscs < 2 && tracks.reduce(computeLowestTrack, undefined) - 1)
			addMessage('track numbering not starting from 1', 'info');
		  const padUnit = isRED ? ['[pad=0|0|5|0]', '[/pad]'] : undefined;
		  if (canSort && prefs.sort_tracklist) tracks.sort(trackComparer);
		  tracks.forEach(function(_track) {
			let title = '', trackArtist = undefined;
			if (_track.track_artist && _track.track_artist != release.artist) {
			  trackArtist = realTrackArtist(_track.track_artist);
			}
			let sameMedia = (release.totalDiscs > 1 && _track.disc_number ?
				tracks.filter(track => track.disc_number == _track.disc_number) : tracks);
			let ttwidth = sameMedia.every(t => t.track_number && parseInt(t.track_number) == t.track_number) ?
				sameMedia.reduce((acc, track) => Math.max(acc, parseInt(track.track_number).toString().length), 2) : 0;

			function realTrackNumber() {
			  return ttwidth > 0 && !(vinylTrackWidth >= 0) ?
				parseInt(_track.track_number).toString().padStart(ttwidth, '0') : _track.track_number;
			}
			function prologue(prefix, postfix) {
			  function block1() {
				if (block == 3) playlist += postfix;
				playlist += '\n';
				if (padUnit && ![1, 2].includes(block)) playlist += padUnit[0];
				block = 1;
				ignoreTrackartist = ignoreComposer = false;
			  }
			  function block2() {
				if (block == 3) playlist += postfix;
				playlist += '\n';
				if (padUnit && ![1, 2].includes(block)) playlist += padUnit[0];
				block = 2;
			  }
			  function block3() {
				//if (block == 2 && isRED) playlist += '[hr]';
				if (padUnit && [1, 2].includes(block)) playlist += padUnit[1];
				playlist += '\n';
				if (block != 3) playlist += prefix;
				block = 3;
			  }

			  if (release.totalDiscs > 1 && _track.disc_number != lastDisc) {
				block1();
				lastDisc = _track.disc_number;
				lastSubtitle = lastClassicalWork = undefined;
				playlist += '[color=' + prefs.tracklist_disctitle_color + '][size=3][b]';
				if (_track.identifiers.VOL_MEDIA && tracks.filter(it => it.disc_number == _track.disc_number)
					.every(it => it.identifiers.VOL_MEDIA == _track.identifiers.VOL_MEDIA)) {
				  playlist += _track.identifiers.VOL_MEDIA.toUpperCase() + ' ';
				} else playlist += 'Disc ' + _track.disc_number.toString();
				if (_track.disc_subtitle && (volumes.get(_track.disc_number) || 0) == 1) {
				  playlist += ' – ' + (prefs.fix_capitalization ?
					  _track.disc_subtitle.properlyFixCapitalization(language) : _track.disc_subtitle);
				  lastSubtitle = _track.disc_subtitle;
				}
				playlist += '[/b][/size]';
				duration = tracks.filter(it => it.disc_number == _track.disc_number).reduce((acc, it) => acc + it.duration, 0);
				if (duration > 0) playlist += ' [size=2][i][' + makeTimeString(duration) + '][/i][/size]';
				playlist += '[/color]';
				tnOffset = tracks.filter(track => track.disc_number == _track.disc_number)
					.reduce(computeLowestTrack, undefined) - 1 || 0;
				if (tnOffset) addMessage('volume ' + _track.disc_number + ' track numbering not starting from 1', 'info');
			  }
			  if ((_track.disc_subtitle || undefined) != (lastSubtitle || undefined)) {
				if (block != 1 || _track.disc_subtitle) block1();
				if (_track.disc_subtitle) {
				  let work = tracks.filter(track => track.disc_subtitle == _track.disc_subtitle);
				  playlist += '[color=' + prefs.tracklist_work_color + '][size=2][b]';
				  if (trackArtist && work.map(track => realTrackArtist(track.track_artist)).homogeneous()) {
					playlist += trackArtist;
					if (_track.conductor && work.map(track => track.conductor).homogeneous())
					  playlist += ' under ' + _track.conductor;
					playlist += ' - ';
					ignoreTrackartist = true;
				  }
				  playlist += prefs.fix_capitalization ?
					_track.disc_subtitle.properlyFixCapitalization(language) : _track.disc_subtitle;
				  if (_track.composer && composerEmphasis && release.composers.length != 1
					  && work.map(track => track.composer).homogeneous()) {
					playlist += ' (' + _track.composer + ')';
					ignoreComposer = true;
				  }
				  playlist += '[/b][/size]';
				  duration = work.reduce((acc, track) => acc + track.duration, 0);
				  if (duration > 0) playlist += ' [size=1][i][' + makeTimeString(duration) + '][/i][/size]';
				  playlist += '[/color]';
				}
				lastSubtitle = _track.disc_subtitle;
			  }
			  if (_track.classical_work != lastClassicalWork) {
				if (_track.classical_work) {
				  block2();
				  let classicalWork = classicalWorks.get(_track.classical_work);
				  playlist += '[color=' + prefs.tracklist_work_color + '][size=2][b]';
				  if (release.composers.length != 1 && classicalWork.composer)
					playlist += classicalWork.composer + ': ';
				  playlist += prefs.fix_capitalization ?
					_track.classical_work.properlyFixCapitalization(language) : _track.classical_work;
				  playlist += '[/b]';
				  let workArtist = classicalWork.performer;
				  if (workArtist && workArtist != release.artist) {
					playlist += ' (' + workArtist;
					if (workArtist = classicalWork.conductor) playlist += ' under ' + workArtist;
					playlist += ')';
				  }
				  playlist += '[/size]';
				  duration = tracks.filter(it => it.classical_work == _track.classical_work)
					.reduce((acc, it) => acc + it.duration, 0);
				  if (duration > 0) playlist += ' [size=1][i][' + makeTimeString(duration) + '][/i][/size]';
				  playlist += '[/color]';
				} else if (block > 2) block1();
				lastClassicalWork = _track.classical_work;
			  }
			  if (vinylTrackWidth >= 0) {
				let vinylTrack = vinyltrackParser.test(_track.track_number);
				if (block == 3 && lastSide && (vinylTrack ? RegExp.$1 != lastSide : _track.track_number == 1))
				  playlist += '\n';
				lastSide = RegExp.$1;
			  }
			  block3();
			} // prologue

			switch (style) {
			  case 1:
			  case 3: {
				prologue('[size=' + prefs.tracklist_size + ']', '[/size]\n');
				track = '[b][color=' + prefs.tracklist_tracknumber_color + ']';
				track += realTrackNumber();
				track += '[/color][/b]' + prefs.title_separator;
				if (!ignoreTrackartist && trackArtist
					&& (!_track.classical_work || !classicalWorks.get(_track.classical_work).performer)) {
				  title = '[color=' + prefs.tracklist_artist_color + ']' + trackArtist;
				  if (_track.conductor) title += ' under ' + _track.conductor;
				  title += '[/color] - ';
				}
				title += _track.classical_title || (prefs.fix_capitalization ?
					_track.title.properlyFixCapitalization(language) : _track.title);
				if (!ignoreComposer && _track.composer && composerEmphasis && release.composers.length != 1
					&& (!_track.classical_work || !classicalWorks.get(_track.classical_work).composer)) {
				  title = title + ' [color=' + prefs.tracklist_composer_color + '](' + _track.composer + ')[/color]';
				}
				playlist += track + title;
				if (_track.duration) playlist += ' [i][color=' + prefs.tracklist_duration_color +'][' +
				  makeTimeString(_track.duration) + '][/color][/i]';
				if (_track.lyrics) playlist += ' [size=1][hide=lyrics]' + _track.lyrics + '[/hide][/size]';
				break;
			  }
			  case 2: {
				prologue('[size=' + prefs.tracklist_size + '][pre]', '[/pre][/size]');
				track = realTrackNumber();
				track += prefs.title_separator;
				if (!ignoreTrackartist && trackArtist
					&& (!_track.classical_work || !classicalWorks.get(_track.classical_work).performer)) {
				  title = trackArtist;
				  if (_track.conductor) title += ' under ' + _track.conductor;
				  title += ' - ';
				}
				title += _track.classical_title || (prefs.fix_capitalization ?
					_track.title.properlyFixCapitalization(language) : _track.title);
				if (!ignoreComposer && _track.composer && composerEmphasis && release.composers.length != 1
					&& (!_track.classical_work || !classicalWorks.get(_track.classical_work).composer))
				  title = title + ' (' + _track.composer + ')';
				let l = 0, j, left, padding, spc;
				duration = _track.duration ? ' [' + makeTimeString(_track.duration) + ']' : null;
				let width = prefs.max_tracklist_width - track.length;
				if (duration) width -= duration.length + 1;
				while (title.trueLength() > 0) {
				  j = width;
				  if (title.trueLength() > width) {
					while (j > 0 && title[j] != ' ') { --j }
					if (j <= 0) j = width;
				  }
				  left = title.slice(0, j).trim();
				  if (++l <= 1) {
					playlist += track + left;
					if (duration) {
					  spc = width - left.trueLength();
					  padding = (spc < 2 ? ' '.repeat(spc) : ' ' + prefs.pad_leader.repeat(spc - 1)) + ' ';
					  playlist += padding + duration;
					}
					width = prefs.max_tracklist_width - track.length;
				  } else playlist += '\n' + ' '.repeat(track.length - 1) + left;
				  title = title.slice(j).trim();
				}
				break;
			  }
			}
		  });
		  switch (style) {
			case 1:
			case 3:
			  if (totalTime > 0) playlist += '\n\n' + divs[0].repeat(10) + '\n[color=' + prefs.tracklist_duration_color +
				']Total time: [i]' + makeTimeString(totalTime) + '[/i][/color][/size]';
			  break;
			case 2:
			  if (totalTime > 0) {
				duration = '[' + makeTimeString(totalTime) + ']';
				playlist += '\n\n' + divs[0].repeat(32).padStart(prefs.max_tracklist_width);
				playlist += '\n' + 'Total time:'.padEnd(prefs.max_tracklist_width - duration.length) + duration;
			  }
			  playlist += '[/pre][/size]';
			  break;
		  }
		  if (pad) playlist = '[pad=10|0]' + playlist + '[/pad]';
		  if (style == 3) playlist = '[align=center]' + playlist + '[/align]';

		  function computeLowestTrack(acc, track) {
			if (Number.isNaN(acc)) return NaN;
			var tn = parseInt(track.track_number);
			if (isNaN(tn)) return NaN;
			return isNaN(acc) || tn < acc ? tn : acc;
		  }
		} else { // single
		  playlist += '[size=4][b]';
		  if (release.artist) {
			playlist += '[color=' + prefs.tracklist_artist_color + ']' + release.artist + '[/color]';
			playlist += isRED ? '[hr]' : '\n' + divs[0].repeat(24) + '\n';
		  }
		  playlist += tracks[0].title + '[/b]';
		  if (tracks[0].composer) {
			playlist += '\n[i][color=' + prefs.tracklist_composer_color + '](' + tracks[0].composer + ')[/color][/i]';
		  }
		  if (tracks[0].duration) playlist += '\n\n[color=' + prefs.tracklist_duration_color +
			'][' + makeTimeString(tracks[0].duration) + '][/color][/size]';
		  if (isRED) playlist = '[pad=20|20|20|20]' + playlist + '[/pad]';
		  playlist = '[align=center]' + playlist + '[/align]';
		}
		if (prefs.colorless_tracklist) playlist = playlist.replace(/\[color=\S+?\]/ig, '').replace(/\[\/color\]/ig, '');
		return playlist;
	  }

	  function getUrls() {
		var urls = [];
		if (sourceUrl) urls.push(sourceUrl);
		Array.prototype.push.apply(urls, release.urls.filter(url =>
			urlParser.test(url) && (!sourceUrl || url.toLowerCase() != sourceUrl.toLowerCase())));
		return urls.map(function(url) {
		  url = new URL(url);
		  let logoUrl = prefs.use_store_logos && [
			['qobuz.com', 'https://ptpimg.me/1saep4.png'],
			['bandcamp.com', 'https://ptpimg.me/vwki92.jpg' /*'https://ptpimg.me/7evz4g.png'*/],
			//['highresaudio.com', 'https://ptpimg.me/65xx03.png'],
			['7digital.com', 'https://ptpimg.me/300scj.png'],
			['mora.jp', 'https://ptpimg.me/9rg495.png'],
			['deezer.com', 'https://ptpimg.me/181799.png'],
			['spotify.com', 'https://ptpimg.me/xo5d1p.png'],
			['tidal.com', 'https://ptpimg.me/w80424.png'],
			['music.apple.com', 'https://ptpimg.me/in7u5u.png'],
			['prestomusic.com', 'https://ptpimg.me/q86vjt.png'],
			['prostudiomasters.com', 'https://ptpimg.me/xkm0th.png'],
			['supraphonline.cz', 'https://ptpimg.me/h85655.png'],
			['hdtracks.com', 'https://ptpimg.me/eurm85.png'/*'https://ptpimg.me/wx36i4.png'*/],
			['nativedsd.com', 'https://ptpimg.me/m6j8gp.png'],
			['indies.eu', 'https://ptpimg.me/8a4w49.png'],
			['e-onkyo.com', 'https://ptpimg.me/uke3n1.png'],
			['beatport.com', 'https://ptpimg.me/lf8q75.png'],
			['junodownload.com', 'https://ptpimg.me/6c7y42.png'],
			['discogs.com', 'https://ptpimg.me/57y9c3.png'], // https://ptpimg.me/n5kmu7.png
			['musicbrainz.org', 'https://ptpimg.me/4m45i9.png'],
		  ].reduce((acc, site) => acc || url.hostname.endsWith(site[0]) && site[1], false);
		  return logoUrl ? `[url=${url}][img]${logoUrl}[/img][/url]` : '[url]' + url + '[/url]';
		}).join('\n');
	  }

	  function genAlbumHeader() {
		return !isVA && artists[0].length >= 3 ? '[size=4]' +
		  joinArtists(artists[0], artist => '[artist]' + artist + '[/artist]') + ' – ' + release.album + '[/size]\n\n' : '';
	  }

	  function findPreviousUploads() {
		function searchLog(searchTerm) {
		  localXHR('/log.php?search=' + encodeURIComponent(searchTerm)).then(function(dom) {
			dom.querySelectorAll('table > tbody > tr.rowb').forEach(function(tr) {
			  var msg = tr.children[1].textContent.trim();
			  if (!msg.includes('was deleted')) return;
			  if (release.codec && media && (matches = /\[(\w+)\/([^\[\]]+)\/([^\[\]]+)\]/.exec(msg)) != null) {
				if (media != matches[3] || release.codec != matches[1] || encoding && encoding != matches[2]) return;
			  } else {
				let torrentSize = getSizeFromString(msg, 'B');
				if (!(torrentSize > 0 && albumSize > 0) || Math.abs(albumSize / torrentSize - 1) > 0.1) return;
			  }
			  addMessage('possibly same release previously deleted: ' + msg, 'notice');
			});
		  });
		}

		let id = parseInt(new URLSearchParams(document.location.search).get('groupid'));
		if (id > 0) localXHR('/torrents.php?action=grouplog&groupid=' + id).then(function(dom) {
		  dom.querySelectorAll('table > tbody > tr.rowa').forEach(function(tr) {
			if (/^(?:deleted)\b/i.test(tr.lastElementChild.textContent.trim())) {
			  if ((id = parseInt(tr.children[1].firstElementChild.textContent)) > 0) searchLog('Torrent ' + id);
			}
		  });
		}); else {
		  let searchTerm = release.album;
		  if (!isVA && artists[0].length > 0 && artists[0].length < 3)
			searchTerm = artists[0].join(' & ') + ' - ' + searchTerm;
		  searchLog(searchTerm);
		}
	  }

	  function lookupMusicRelations() {
		queryAjaxAPI('artist', { artistname: artists[0][0] }).then(function(artistGroup) {
		  // Find existing torrents
		  function searchTorrents(matchReleaseType = true) {
			var torrents = [];
			artistGroup.torrentgroup.filter(function(torrentGroup) {
			  if (matchReleaseType && releaseType && torrentGroup.releaseType != releaseType) return false;
			  if (release.album_year > 0 && torrentGroup.groupYear != release.album_year) return false;
			  return titlesMatch(decodeHTML(torrentGroup.groupName), 5, 0.8);
			}).forEach(torrentGroup => { Array.prototype.push.apply(torrents, torrentGroup.torrent.filter(function(torrent) {
			  if (torrents.some(_torrent => _torrent.id == torrent.id)) return;
			  if (torrent.trumpable && (isUpload || isRequestNew && prefs.always_request_perfect_flac)) return false;
			  if (releaseYear > 0 && torrent.remasterYear != releaseYear) return false;
			  if (!isRequestNew || !prefs.always_request_perfect_flac ? media && torrent.media != media
				  : !['WEB', 'CD', 'Blu-Ray', 'SACD', 'DVD'].includes(torrent.media)) return false;
			  //if (release.label && torrent.remasterRecordLabel.toLowerCase() != release.label.toLowerCase()) return false;
			  //if (editionTitle && torrent.remasterTitle.toLowerCase() != editionTitle.toLowerCase()) return false;
			  if (!isRED || release.codec != 'AAC') {
				if (!isRequestNew || !prefs.always_request_perfect_flac ? release.codec && torrent.format != release.codec
					  : torrent.format != 'FLAC') return false;
				if (!isRequestNew || !prefs.always_request_perfect_flac ? encoding && torrent.encoding != encoding
					: !['Lossless', '24bit Lossless'].includes(torrent.encoding)) return false;
				if (isRequestNew && prefs.always_request_perfect_flac && torrent.media == 'CD'
					&& (!torrent.hasLog || torrent.logScore < 100 || !torrent.hasCue)) return false;
			  }
			  torrent.torrentGroup = torrentGroup;
			  return true;
			})) });
			return torrents;
		  }
		  let torrents = searchTorrents(true);
		  if (torrents.length > 0) torrents.forEach(function(torrent) {
			if (reportedTorrentCollicions.has(torrent.id)) return;
			if (isUpload)
			  reportedTorrentCollicions.set(torrent.id, addMessage(new HTML('possible dupe to torrent ' +
				getTorrentRef(torrent) + ' ' + getFriendlyTime(torrent.time)), 'warning'));
			else if (isRequestNew)
			  reportedTorrentCollicions.set(torrent.id, addMessage(new HTML('requested release possibly already on site: ' +
				getTorrentRef(torrent) + ' ' + getFriendlyTime(torrent.time)), 'notice'));
		  }); else searchTorrents(false).forEach(function(torrent) {
			if (reportedTorrentCollicions.has(torrent.id)) return;
			reportedTorrentCollicions.set(torrent.id,
				addMessage(new HTML('existing similar release in different category (' +
					torrent.torrentGroup.releaseType + '): ' + getTorrentRef(torrent)), 'notice'));
		  });
		  // Find open requests
		  function searchRequests(matchReleaseType) {
			return Promise.all(artistGroup.requests.filter(function(request) {
			  if (request.categoryId != 1) return false; // assertion
			  if (release.album_year && request.year != release.album_year) return false;
			  return titlesMatch(decodeHTML(request.title), 5, 0.8);
			}).map(request => queryAjaxAPI('request', { id: request.requestId }).then(function(request) {
			  if (request.isFilled) return null;
			  if (request.categoryName != 'Music') return null; // assertion
			  if (matchReleaseType && releaseType && request.releaseType != releaseType) return null;
			  if (releaseYear > 0 && request.year != releaseYear) return null;
  // 			  if (editionTitle && torrent.remasterTitle.toLowerCase() != editionTitle.toLowerCase()) return false;
  // 			  if (release.label && torrent.remasterRecordLabel.toLowerCase() != release.label.toLowerCase()) return false;
			  if (Array.isArray(request.mediaList) && !request.mediaList.includes('Any')
					&& (isRequestNew && prefs.always_request_perfect_flac ?
						!['WEB', 'CD', 'Blu-Ray', 'DVD', 'SACD'].some(media => request.mediaList.includes(media))
							: media && !request.mediaList.includes(media))) return null;
			  if (Array.isArray(request.formatList) && !request.formatList.includes('Any')
				  	&& (isRequestNew && prefs.always_request_perfect_flac ?
						!['FLAC'].some(format => request.formatList.includes(format))
							: release.codec && !request.formatList.includes(release.codec))) return null;
			  if (Array.isArray(request.bitrateList) && !request.bitrateList.includes('Any')
				  	&& (isRequestNew && prefs.always_request_perfect_flac ?
						!['Lossless', '24bit Lossless'].some(encoding => request.bitrateList.includes(encoding))
							: encoding && !request.bitrateList.includes(encoding))) return null;
  // 			  if ((!isRequestNew || !prefs.always_request_perfect_flac) && media == 'CD'
  // 				  && !torrent.mediaList.includes('CD') && (!request.hasLog || request.logScore < 100 || !request.hasCue)) return null;
			  return request;
			}))).then(requests => requests.filter(Boolean));
		  }
		  searchRequests(true).then(function(requests) {
			if (requests.length > 0) requests.forEach(function(request) {
			  if (reportedRequests.has(request.requestId)) return;
			  if (isUpload) reportedRequests.set(request.requestId, addMessage(new HTML('open request ' +
				getRequestRef(request) + ' ' + getRequestInfo(request) + ' possibly fillable by this release'), 'info'));
			  else if (isRequestNew) reportedRequests.set(request.requestId,
				addMessage(new HTML('release possibly already requested: ' + getRequestRef(request)), 'info'));
			}); else return searchRequests(false).then(requests => { requests.forEach(function(request) {
			  if (reportedRequests.has(request.requestId)) return;
			  if (isUpload) reportedRequests.set(request.requestId,
				  addMessage(new HTML('existing request ' + getRequestRef(request) + ' in different category'), 'info'));
			  else if (isRequestNew) reportedRequests.set(request.requestId,
				addMessage(new HTML('release possibly already requested in different category: ' + getRequestRef(request)), 'info'));
			}) });
		  }).catch(reason => { console.error('searchRequests:', reason) });
		  if (!relationsCheckTimer && prefs.relations_check_interval > 0)
		  	relationsCheckTimer = setInterval(lookupMusicRelations, prefs.relations_check_interval * 1000);
		});
	  }

	  function getHomoIdentifier(id, _tracks = tracks) {
		if (typeof id != 'string') return undefined;
		id = id.toUpperCase();
		return _tracks.every((elem, ndx, arr) => elem.identifiers[id] != undefined
			&& elem.identifiers[id] === arr[0].identifiers[id]) ? _tracks[0].identifiers[id] : undefined;
	  }

	  function getReleaseTypeFromId(id) {
		var result = 0;
		if (/^(?:Album|LP)$/i.test(id)) result = getReleaseTypeValue('Album');
		if (/^(?:Live(?:\sAlbum))$/i.test(id)) result = getReleaseTypeValue('Live album');
		if (/^(?:(?:Maxi[\-\s]?)?Single|(?:7|10)")$/i.test(id)) result = getReleaseTypeValue('Single');
		if (/^(?:EP|(?:12)")$/i.test(id)) result = getReleaseTypeValue('EP');
		if (/\b(?:Soundtrack)\b/i.test(id)) result = getReleaseTypeValue('Soundtrack');
		if (/^(?:Anthology)$/i.test(id)) result = getReleaseTypeValue('Anthology');
		//if (/^(?:Compilation)$/i.test(id)) result = getReleaseTypeValue('Compilation');
		if (/^(?:Remix)$/i.test(id)) result = getReleaseTypeValue('Remix');
		if (/^(?:Bootleg)$/i.test(id)) result = getReleaseTypeValue('Bootleg');
		if (/^(?:Mixtape)$/i.test(id)) result = getReleaseTypeValue('Mixtape');
		if (/^(?:Demo)$/i.test(id)) result = getReleaseTypeValue('Demo');
		if (/^(?:Concert\sRecording)$/i.test(id)) result = getReleaseTypeValue('Concert Recording');
		if (/^(?:DJ\sMix)$/i.test(id)) result = getReleaseTypeValue('DJ Mix');
		if (/^(?:Interview)$/i.test(id)) result = getReleaseTypeValue('Interview');
		return result;
	  }

	  function getStoreUrl() {
		return [
		  ['ACOUSTICSOUNDS_ID', 'https://store.acousticsounds.com/d/{ID}/'],
		  ['ALLMUSIC_ID', 'https://www.allmusic.com/album/{ID}'],
		  ['AMAZON_ID', 'https://www.amazon.com/gp/product/{ID}'],
		  ['AMID', 'https://www.allmusic.com/album/{ID}'],
		  ['APPLE_ID', 'https://music.apple.com/album/{ID}'],
		  ['ASIN', 'https://www.amazon.com/gp/product/{ID}'],
		  ['BEATPORT_ID', 'https://www.beatport.com/release/2/{ID}'],
		  ['BLEEP_ID', 'https://bleep.com/release/{ID}'],
		  ['BOOMKAT_ID', 'https://boomkat.com/products/{ID}'],
		  ['DEEZER_ID', deezerAlbumPrefix + '{ID}'],
		  ['DISCOGS_ID', discogsOrigin + '/release/{ID}'],
		  ['ECM_ID', 'https://www.ecmrecords.com/catalogue/{ID}'],
		  ['EONKYO_ID', 'https://www.e-onkyo.com/music/album/{ID}/'],
		  ['GOOGLE_ID', 'https://play.google.com/store/music/album/?id={ID}'],
		  ['HDTRACKS_ID', 'https://www.hdtracks.com/#/album/{ID}'],
		  ['INDIESSCOPE_ID', 'https://www.indies.eu/alba/{ID}/'],
		  ['ITUNES_ID', 'https://music.apple.com/album/{ID}'],
		  ['JUNODOWNLOAD_ID', 'https://www.junodownload.com/products/{ID}'],
		  ['MBID', mbrRlsPrefix + '{ID}'],
		  ['MUZIEKWEB_ID', 'https://www.muziekweb.nl/en/Link/{ID}/'],
		  ['NETEASE_ID', 'https://music.163.com/album?id={ID}'],
		  ['PIAS_ID', 'https://store.pias.com/release/{ID}'],
		  ['PROSTUDIOMASTERS_ID', 'https://www.prostudiomasters.com/album/page/{ID}'],
		  ['QQMUSIC_ID', 'https://y.qq.com/n/yqq/album/{ID}.html'],
		  ['SPOTIFY_ID', 'https://open.spotify.com/album/{ID}'],
		  ['TRAXSOURCE_ID', 'https://www.traxsource.com/title/{ID}/'],
		  ['VGMDB_ID', 'https://vgmdb.net/album/{ID}'],
		  ['TIDAL_ID', 'https://listen.tidal.com/album/{ID}'],
		  ['OTOTOY_ID', 'https://ototoy.jp/_/default/p/{ID}'],
		  ['YANDEX_ID', 'https://music.yandex.ru/album/{ID}'],
		].reduce((u, def) => u || ((u = getHomoIdentifier(def[0])) ? def[1].replace('{ID}', u) : undefined), undefined);
	  }

	  function lookupWorker(alias, callback) {
		if (!alias || typeof callback != 'function') throw 'lookupWorker: invalid parameter';
		return lookupWorkers[alias] instanceof Promise ? lookupWorkers[alias] : (lookupWorkers[alias] = callback());
	  }

	  function getCoverOnline() {
		try { var url = new URL(sourceUrl || release.urls[0]), apiFirst } catch(e) { }
		if ((i = getHomoIdentifier('APPLE_ID') || getHomoIdentifier('ITUNES_ID'))
			|| itunesRlsParser.test(url) && (i = parseInt(RegExp.$1)))
		  apiFirst = queryItunesAPI('lookup', { id: i })
			.then(lookup => lookup.resultCount > 0 ? setItunesImage(lookup.results[0]) : Promise.reject('no cover'));
		else if (i = getHomoIdentifier('DEEZER_ID') || dzrRlsParser.test(url) && (i = parseInt(RegExp.$1)))
		  apiFirst = queryDeezerAPI('album', i)
			.then(result => result.id ? setDeezerImage(result) : Promise.reject('No cover'));
		else if ((i = getHomoIdentifier('DISCOGS_ID')) || dcRlsParser.test(url) && (i = parseInt(RegExp.$1)))
		  apiFirst = queryDiscogsAPI('releases/' + i).then(function(release) {
			return (release.master_id ? queryDiscogsAPI('masters/' + release.master_id).then(master => master.images || [])
			 	: Promise.resolve([])).then(function(masterImages) {
			  var result = masterImages.concat(release.images || [])
			  	.filter(image => urlParser.test(image.resource_url || image.uri)
					&& ['primary', 'front'].includes(image.type));
			  result = result.length > 0 && (result[0].resource_url || result[0].uri) || undefined;
			  return result ? setCover(/^(?:https?):\/\/(?:img\.discogs\.com)\/.+\/(\S+?\.\w+)\b/i.test(result) ?
				'https://www.discogs.com/image/' + RegExp.$1 : result) : Promise.reject('No cover');
			});
		  });
		else if ((i = getHomoIdentifier('MBID') || mbrRlsParser.test(url) && (i = RegExp.$1)))
		  apiFirst = getMusicBrainzCovers(i).then(function(covers) {
			return covers != null ? setCover(covers[1][0]) : Promise.reject('No cover');
		  });
		else if (i = getHomoIdentifier('TIDAL_ID') || tidalRlsParser(url))
		  apiFirst = queryTidalAPI('albums/' + RegExp.$1)
			.then(album => 'https://resources.tidal.com/images/' + album.cover.replace(/-/g, '/') + '/1280x1280.jpg');
		else if (url && url.hostname.endsWith('mora.jp'))
		  apiFirst = loadMoraMetadata(url).then(function(packageMeta) {
			return setCover(packageMeta.packageUrl + packageMeta.fullsizeimage);
		  });
		else if (url && url.hostname.endsWith('hdtracks.com'))
		  apiFirst = loadHDtracksMetadata(url).then(album => setCover(album.cover));
		else if ((i = parseInt(getHomoIdentifier('BEATSOURCE_ID'))) || url && url.hostname.endsWith('beatsource.com')
			&& /\/releases?\/(?:.+\/)?(\d+)(?=\/|$)/i.test(url.pathname) && (i = parseInt(RegExp.$1)))
		  apiFirst = queryBeatsourceAPI('releases/' + i).then(release => setCover(release.image.uri));
		else if ((i = parseInt(getHomoIdentifier('NETEASE_ID'))) || url && url.hostname == 'music.163.com'
			&& /\/(?:album)\b.*\b(?:id)=(\d+)\b/i.test(url.href) && (i = parseInt(RegExp.$1)))
		  apiFirst = queryNeteaseAPI('album/' + i)
			.then(result => setCover(result.album.picUrl.replace(/\b(?:p[123])(?=\.music\.\d+\.net\b)/i, 'p4')));
		else apiFirst = Promise.reject('No known API binding');
		return apiFirst.catch(reason => url ? imageUrlResolver(url).then(setCover) : Promise.reject('No source URLs'));
	  }

	  function searchCoverOnline() {
		function info(service, url, id) {
		  addMessage(new HTML('used cover image from ' + service + ' release id ' +
			'<a href="'+ url + '" target="_blank" style="' + hyperlinkStyle + '">' + id + '</a>'), 'info');
		}

		const lookupProviders = {
		  'deezer': () => dzLookup().then(album => setDeezerImage(album).then(function(imgUrl) {
			info('Deezer', deezerAlbumPrefix + album.id, album.id);
			return imgUrl;
		  })),
		  'qobuz': () => qbLookup().then(function(album) {
			const resMatch = /_\d+(?=\.\w+$)/;
			return setCover(album.cover.replace(resMatch, '_org'))
			  .catch(reason => setCover(album.cover.replace(resMatch, '_max')))
			  .catch(reason => setCover(album.cover.replace(resMatch, '_600')))
			  .catch(reason => setCover(album.cover))
			  .then(function(imgUrl) {
				info('Qobuz', album.url, album.id);
				return imgUrl;
			  });
		  }),
		  'itunes': () => amLookup().then(album => setItunesImage(album).then(function(imgUrl) {
			info('Apple Music', album.collectionViewUrl, album.collectionId);
			return imgUrl;
		  })),
		  'tidal': () => tidalLookup().then(album => album.cover ?
				setCover('https://resources.tidal.com/images/' + album.cover.replace(/-/g, '/') + '/1280x1280.jpg').then(function(imgUrl) {
			info('Tidal', album.url, album.id);
			return imgUrl;
		  }) : Promise.reject('no cover for this album')),
		  'musicbrainz': () => mbLookupByBarcode().catch(mbLookupByASIN)
			.catch(reason => mbLookup().then(release => [release])).catch(mbLookupByTOC)
			.then(releases => Promise.all(releases.map(release => getMusicBrainzCovers(release.id))))
			.then(function(releases) {
			  let release = releases.find(release => release != null);
			  return release != undefined ? setCover(release[1][0]).then(function(imgUrl) {
				if (/\/release\/(\S+)(?=[\/\?\#]|$)/i.test(release[0])) info('Musicbrains', release[0], RegExp.$1);
				return imgUrl;
			  }) : Promise.reject('no covers found');
			}),
		  'netease': () => neLookup().then(function(album) {
			const albumUrl = 'https://music.163.com/album?id=' + album.id;
			return (function() {
			  return urlParser.test(album.picUrl) ?
				Promise.resolve(album.picUrl.replace(/\b(?:p[123])(?=\.music\.\d+\.net\b)/i, 'p4'))
			  		: imageUrlResolver(albumUrl);
			})().then(setCover).then(function(imageUrl) {
			  info('Netease', albumUrl, album.id);
			  return imageUrl;
			});
		  }),
		  'bandcamp' : () => bcLookup().then(album => (urlParser.test(album.img) ?
				Promise.resolve(album.img.replace(/_\d+(?=\.\w+$)/, '_0')) : imageUrlResolver(album.url)).then(setCover).then(function(imgUrl) {
			info('Bandcamp', album.url, album.id);
			return imgUrl;
		  })),
		  'discogs': () => dcLookup().then(releases => (function() {
			if (!releases[0].master_id) return Promise.reject('no master');
			return queryDiscogsAPI('masters/' + releases[0].master_id)
			  .then(master => Array.isArray(master.images) && master.images
				  .filter(image => ['primary', 'front'].includes(image.type))
				  .map(image => image.resource_url || image.uri)
				  .filter(RegExp.prototype.test.bind(urlParser))[0] || undefined);
		  })().catch(reason => undefined).then(function(imageUrl) {
			imageUrl = imageUrl || releases[0].cover_image;
			if (!imageUrl) return Promise.reject('no cover for this release');
			if (/^(?:https?):\/\/(?:img\.discogs\.com)\/.+\/(\S+?\.\w+)\b/i.test(imageUrl))
			  imageUrl = 'https://www.discogs.com/image/' + RegExp.$1;
			return setCover(imageUrl).then(function(imageUrl) {
			  info('Discogs', 'https://www.discogs.com' + releases[0].uri, releases[0].id);
			  return imageUrl;
			});
		  })),
		  'beatsource': () => bsLookup().then(release => setCover(release.image.uri).then(function(imgUrl) {
			info('Beatsource', `https://www.beatsource.com/release/${release.slug}/${release.id}`, release.id);
			return imgUrl;
		  })),
		  'lastfm': () => queryLastFmAPI('album.getinfo', {
			  artist: (isVA ? VA : release.artist),
			  album: release.album,
			}).then(function(result) {
			  if (result.error) return Promise.reject(result.message);
			  let image = ['mega', 'extralarge', '', 'large', 'medium', 'small'].reduce(function(acc, size) {
				return acc || result.album.image.find(image => image.size === size && urlParser.test(image['#text']));
			  }, undefined);
			  if (!image) return Promise.reject('no cover for matched album');
			  image = image['#text'];
			  return setCover(image.replace(/\/\d+(?:x\d+|s)\//i, '/')).catch(reason => setCover(image)).then(function(imgUrl) {
				info('Last.fm', result.album.url, result.album.id || result.album.mbid || '#N/A');
				return imgUrl;
			  });
			}),
		  'google': function() {
			let query = new URLSearchParams({
			  q: '"' + (isVA ? VA : release.artist) + '" "' + release.album + '"',
			  c: 'music',
			});
			return globalXHR('https://play.google.com/store/search?' + query).then(function(response) {
			  try {
				let _objs = loadGoogleMetadata(response);
				let _results = _objs.filter(function(obj) { try { return typeof obj[0][4] == 'boolean' } catch(e) { return false } });
				if (_results.length == 1) _results = _results[0][0][1]; else throw 'results metadata not found';
			  } catch(e) { }
			  let results = response.document.querySelectorAll('div:first-of-type + div[jscontroller]:last-of-type');
			  if (results.length > 0) for (let ndx = 0; ndx < results.length; ++ndx) {
				let items = [];
				results[ndx].querySelectorAll(':scope > div').forEach(function(result) {
				  let img = result.querySelector('span > span > img');
				  img = img != null ? (img.src || img.dataset.src).replace(/=[a-z]\d+$/, '=w0') : null;
				  let album = result.querySelector('a > div[title]');
				  if (album == null) return;
				  let artist = album.parentNode.parentNode.parentNode.querySelector('a > div:not([title])')
				  artist = artist != null ? artist.textContent.trim() : null;
				  let url = album.parentNode.href;
				  let id = /\?id=(\w+)\b/i.test(album.parentNode.href) && RegExp.$1 || null;
				  album = album.textContent.trim();
				  items.push({ id: id, url: url, artist: artist, album: album, imgUrl: img });
				});
				for (var i = 0; i <= maxFuzzyLevel; ++i) {
				  var f = items.filter(release => releasesMatch(release.artist, release.album, i));
				  if (f.length > 1) return Promise.reject('ambiguity');
				  if (f.length == 1) break;
				}
				if (i > maxFuzzyLevel) return Promise.reject('no matches');
				if (prefs.diag_mode && i >= 2) console.debug('Google Play Music fuzzy match:', release, '≈', f[0]);
				if (f[0].imgUrl) return setCover(f[0].imgUrl).then(function(imgUrl) {
				  info('Google Play Music', f[0].url, f[0].id);
				  return imgUrl;
				});
			  }
			});
			return Promise.reject('no matches');
		  },
		};
		let lookupChain;
		if (typeof prefs.cover_lookup_providers == 'string')
		  lookupChain = prefs.cover_lookup_providers.toLowerCase() == 'all' ? Object.keys(lookupProviders)
			: prefs.cover_lookup_providers.match(/\b(\w+)\b/g).map(s => s.toLowerCase());

		function lookupProvider(index = 0) {
		  if (!(index < lookupChain.length)) return Promise.reject('Provider index out of bounds (' + index + ')');
		  return (lookupChain[index] in lookupProviders ? lookupProviders[lookupChain[index]]() : Promise.reject('unknown provider')).catch(function(reason) {
			if (prefs.diag_mode) console.debug('Cover lookup failed for', lookupChain[index], ':', reason);
			return ++index < lookupChain.length ? lookupProvider(index)
				: Promise.reject('no online resource matched this release');
		  });
		}

		return Array.isArray(lookupChain) && lookupChain.length > 0 ? lookupProvider().catch(function(reason) {
		  addMessage('cover lookup failed (' + reason + ')', 'notice');
		  return Promise.reject(reason);
		}) : Promise.reject('No valid cover provider selected');
	  }

	  function setItunesImage(album) {
		return urlParser.test(album.artworkUrl100) ?
		  setCover(album.artworkUrl100.replace('100x100bb', '100000x100000-999'))
			.catch(reason => setCover(album.artworkUrl100)) : Promise.reject('Apple Music image not valid URL');
	  }
	  function setDeezerImage(album) {
		return urlParser.test(album.cover_xl) ?
		  setCover(album.cover_xl.replace('1000x1000-000000-80-0-0', '1400x1400-000000-100-0-0'))
			.catch(reason => setCover(album.cover_xl)) : Promise.reject('Deezer image not valid URL');
	  }

	  function completeFromOnlineSource(onlineTracks) {
		fillMissingValue(document.getElementById('media'), 'media');
		fillMissingValue(document.getElementById('year'), 'album_year');
		ref = document.getElementById('remaster_year') || !isUpload && document.querySelector('input[name="year"]');
		if (ref != null && !ref.disabled && (ref.value == '' || !isRED && ref.value == '---')) {
		  var value = getHomoValue('release_date');
		  if (value != null) ref.value = extractYear(value);
		}
		fillMissingValue(document.getElementById('remaster_record_label')
			|| document.querySelector('input[name="recordlabel"]'), 'label');
		if (elementWritable(ref = document.getElementById('remaster_catalogue_number')
			|| document.querySelector('input[name="cataloguenumber"]'))) {
		  let catNo = getHomoValue('catalog');
		  if (!catNo && onlineTracks.every(track => track.identifiers.BARCODE
			   && track.identifiers.BARCODE == onlineTracks[0].identifiers.BARCODE)) {
			catNo = parseInt(onlineTracks[0].identifiers.BARCODE.toString().replace(/\s+/g, ''));
		  }
		  if (catNo) ref.value = catNo;
		}

		function getHomoValue(propName) {
		  return onlineTracks[0][propName] && onlineTracks.map(track => track[propName]).homogeneous() ?
			onlineTracks[0][propName] : null;
		}
		function fillMissingValue(node, propName) {
		  if (!node || node.disabled || node.value != '' && (isRED || node.value != '---')) return;
		  var value = getHomoValue(propName);
		  if (value != null) node.value = value;
		}
	  }

	  function onlineCheck(onlineTracks) {
		if (!Array.isArray(onlineTracks) || onlineTracks.length <= 0) {
		  addMessage('online check not performed (empty tracklist)', 'notice');
		  return Promise.reject('No tracks');
		}
		if (prefs.diag_mode) console.debug('Checking against online tracks:', onlineTracks);
		let issueCounter = 0, hiresTimes = onlineTracks.some(function(track) {
		  var remainder = Math.floor((track.duration - Math.floor(track.duration)) * 1000) / 100;
		  return remainder > Math.floor(remainder);
		}), devIndex = media == 'Vinyl' ? 2 : hiresTimes ? 1 : 0, albumLengthDivergences, trackLengthDivergences;
		try { albumLengthDivergences = JSON.parse(prefs.album_length_divergences) }
			catch(e) { albumLengthDivergences = [0.75, 0.01, 2.50] }
		try { trackLengthDivergences = JSON.parse(prefs.track_length_divergences) }
			catch(e) { trackLengthDivergences = [2.5, 0.1, 5.0] }
		const arrayCompare = prefs.strict_online_check ? Array.prototype.equalTo : Array.prototype.equalCaselessTo;
		onlineTracks.forEach(processTrackArtists);
		if (onlineTracks[0].artist && onlineTracks.map(track => track.artist).homogeneous()
			&& (isVA ? !vaParser.test(onlineTracks[0].artist) : mainArtistMismatch())) {
		  ++issueCounter;
		  addMessage(new HTML('online album main artist mismatch ("' +
			safeText(release.artist).bold() + '" ≠ "' + safeText(onlineTracks[0].artist).bold() + '")'), 'warning');
		}
		if (onlineTracks[0].album && onlineTracks.map(track => track.album).homogeneous()
			&& mismatch(release.album, onlineTracks[0].album) && mismatch(album, onlineTracks[0].album)
		   	&& mismatch(release.album, removeFeatArtists(onlineTracks[0].album))) {
		  ++issueCounter;
		  addMessage(new HTML('online album title mismatch ("' +
			safeText(release.album).bold() + '" ≠ "' + safeText(onlineTracks[0].album).bold() + '")'), 'warning');
		}
		if (onlineTracks[0].label && onlineTracks.map(track => track.label).homogeneous()
			&& mismatch(release.label, onlineTracks[0].label, /-|\s+(?:Records|Recordings)$/ig)) {
		  ++issueCounter;
		  addMessage(new HTML('online album label mismatch ("' +
			safeText(release.label).bold() + '" ≠ "' + safeText(onlineTracks[0].label).bold() + '")'), 'notice');
		}
		if (release.catalogs.length == 1
			&& onlineTracks[0].catalog && onlineTracks.map(track => track.catalog).homogeneous()
			&& mismatch(release.catalogs[0], onlineTracks[0].catalog, /[\s\-]/g)) {
		  ++issueCounter;
		  addMessage(new HTML('online album catalogue# mismatch ("' +
			safeText(release.catalogs[0]).bold() + '" ≠ "' + safeText(onlineTracks[0].catalog).bold() + '")'), 'notice');
		}
		if (onlineTracks[0].album_year && onlineTracks.map(track => track.album_year).homogeneous()
			&& release.album_year != onlineTracks[0].album_year) {
		  ++issueCounter;
		  addMessage(new HTML('online album year mismatch (' +
			(release.album_year || '<unset>').toString().bold() + ' ≠ ' + onlineTracks[0].album_year.toString().bold() + ')'), 'warning');
		}
		if (onlineTracks[0].release_date && !isNaN(releaseDate) && onlineTracks.map(track => track.release_date).homogeneous()
			&& releaseDate.getDateValue() != new Date(onlineTracks[0].release_date.toString()).getDateValue()) {
		  ++issueCounter;
		  addMessage(new HTML('online album release date mismatch (' +
			(release.release_date || '<unset>').toString().bold() + ' ≠ ' + onlineTracks[0].release_date.toString().bold() + ')'), 'notice');
		}
		if (tracks.length != onlineTracks.length) {
		  ++issueCounter;
		  addMessage(new HTML('online album different tracklist length (' + tracks.length.toString().bold() +
			' ≠ ' + onlineTracks.length.toString().bold() + ')'), 'warning');
		}
		if (totalTime > 0) {
		  let ttOnline = onlineTracks.reduce((acc, track) => acc + (track.duration || NaN), 0);
		  if (ttOnline > 0 && Math.abs(totalTime - ttOnline) * 100 / ttOnline > albumLengthDivergences[devIndex]) {
			++issueCounter;
			addMessage(new HTML('online album duration mismatch (' + makeTimeString(totalTime).bold() +
				' ≠ ' + makeTimeString(ttOnline).bold() + ')'), 'warning');
		  }
		}
		if (releaseType > 0) {
		  let rt = getHomoIdentifier('RELEASETYPE', onlineTracks) || getHomoIdentifier('RELEASE_TYPE', onlineTracks);
		  if (rt && (rt = getReleaseTypeFromId(rt)) > 0 && rt != releaseType)
			addMessage(new HTML('online album release type mismatch (' +
				safeText(stringifyReleaseType(releaseType) || releaseType).bold() + ' ≠ ' +
				safeText(stringifyReleaseType(rt) || rt).bold() + ')'), 'warning');
		}
		for (let ndx = 0; ndx < tracks.length; ++ndx) {
		  if (ndx >= onlineTracks.length) {
			addMessage('end of online tracklist reached, tracks from #' + (ndx + 1) + ' to end will not be checked', 'notice');
			break;
		  }
		  if (mismatch(tracks[ndx].title, onlineTracks[ndx].title)
				&& mismatch(tracks[ndx].title, removeFeatArtists(onlineTracks[ndx].title))) {
			++issueCounter;
			addMessage('online track #' + (ndx + 1) + ' title mismatch ("' +
				(tracks[ndx].title || '') + '" ≠ "' + (onlineTracks[ndx].title || '') + '")', 'warning');
		  }
		  if (onlineTracks[ndx].track_artist && mismatch(tracks[ndx].track_artist, onlineTracks[ndx].track_artist)) {
			let trackArtists = Array.isArray(tracks[ndx].track_artists) && tracks[ndx].track_artists.length > 0 ?
				[tracks[ndx].track_artists, tracks[ndx].track_guests] : getArtists(tracks[ndx].track_artist);
			let onlineSrackArtists = Array.isArray(onlineTracks[ndx].track_artists) && onlineTracks[ndx].track_artists.length > 0 ?
				[onlineTracks[ndx].track_artists, onlineTracks[ndx].track_guests] : getArtists(onlineTracks[ndx].track_artist);
			if (!artistsMatch(trackArtists, onlineSrackArtists)) {
			  ++issueCounter;
			  addMessage('online track #' + (ndx + 1) + ' track artist mismatch ("' +
				(tracks[ndx].track_artist || '') + '" ≠ "' + (onlineTracks[ndx].track_artist || '') + '")', 'notice');
			}
		  }
		  if (onlineTracks[ndx].track_number && tracks[ndx].track_number != onlineTracks[ndx].track_number) {
			++issueCounter;
			addMessage('online track #' + (ndx + 1) + ' track number mismatch (' +
				(tracks[ndx].track_number || '<unset>') + ' ≠ ' + onlineTracks[ndx].track_number + ')',
				release.totalDiscs > 1 ? 'notice' : 'warning');
		  }
		  if (onlineTracks[ndx].disc_number && (onlineTracks[ndx].disc_number > 1 || tracks[ndx].disc_number)
			  && tracks[ndx].disc_number != onlineTracks[ndx].disc_number) {
			++issueCounter;
			addMessage('online track #' + (ndx + 1) + ' disc number mismatch (' +
				(tracks[ndx].disc_number || '<unset>') + ' ≠ ' + onlineTracks[ndx].disc_number + ')', 'warning');
		  }
		  if (onlineTracks[ndx].disc_subtitle && mismatch(tracks[ndx].disc_subtitle, onlineTracks[ndx].disc_subtitle)) {
			++issueCounter;
			addMessage('online track #' + (ndx + 1) + ' disc subtitle mismatch ("' +
				(tracks[ndx].disc_subtitle || '') + '" ≠ "' + onlineTracks[ndx].disc_subtitle + '")', 'notice');
		  }
		  if (tracks[ndx].duration > 0 && onlineTracks[ndx].duration > 0) {
			let timeDif = Math.abs(tracks[ndx].duration - onlineTracks[ndx].duration);
			if (timeDif > trackLengthDivergences[devIndex]) {
			  ++issueCounter;
			  addMessage('online track #' + (ndx + 1) + ' duration mismatch (' +
				makeTimeString(tracks[ndx].duration) + ' ≠ ' + makeTimeString(onlineTracks[ndx].duration) + ')',
				(timeDif > [5.0, 0.2, 8][devIndex] ? 'warning' : 'notice'));
			}
		  }
		  if (tracks[ndx].identifiers.MD5 && onlineTracks[ndx].identifiers.MD5
			  && tracks[ndx].identifiers.MD5 != onlineTracks[ndx].identifiers.MD5.toUpperCase())
			addMessage('online track #' + (ndx + 1) + ' MD5 mismatch (' + tracks[ndx].identifiers.MD5 + ' ≠ ' +
				onlineTracks[ndx].identifiers.MD5.toUpperCase() + ')', 'warning');
		}
		if (issueCounter == 0) {
		  i = 'online check completed without remarks';
		  if (prefs.messages_verbosity >= 1) addMessage(i, 'info'); else console.debug(i);
		}

		function mainArtistMismatch() {
		  return !artistsMatch([artists[0], albumGuests], Array.isArray(onlineTracks[0].artists)
			&& onlineTracks[0].artists.length > 0 ? [onlineTracks[0].artists, onlineTracks[0].featured_artists]
				: getArtists(onlineTracks[0].artist));
		}
		function removeFeatArtists(title) {
		  return featArtistParsers.slice(1).reduce(function(acc, rx, ndx) {
			return rx.test(acc) && (ndx < 5 || splitArtists(RegExp.$1).every((artist, ndx) => looksLikeTrueName(artist, 1))) ?
			  acc.replace(rx, '') : acc;
		  }, title || '')
		}
		function mismatch(localStr, onlineStr, rx) {
		  function normalize(val) {
			if (val == undefined || val == null) return '';
			if (typeof val != 'string') val = val.toString();
			if (rx instanceof RegExp || typeof rx == 'string') val = val.replace(rx, '');
			val = val.replace(/[\(\)\-\s]+/g, '');
			return prefs.strict_online_check ? val : val.toLowerCase();
		  }

		  return normalize(localStr) != normalize(onlineStr);
		}
	  }

	  function lookupOnlineSource() {
		function info(service, url, id) {
		  if (prefs.check_integrity_online) addMessage(new HTML('checking online against ' + service +
			' release id <a href="' + url + '" target="_blank" style="' + hyperlinkStyle + '">' + id + '</a>'), 'info');
		}
		function mbEpilogue(releases) {
		  info('MusicBrainz', mbrRlsPrefix + releases[0].id, releases[0].id);
		  return mbrRlsPrefix + releases[0].id;
		}

		const commonMedia = !media || ['CD', 'WEB'].includes(media),
			  singleVolume = !release.totalDiscs || release.totalDiscs < 2;
		let lookupProviders = [];
		if (barCode) lookupProviders.push([
		  () => querySpotifyAPI('search', { q: 'barcode:' + barCode, type: 'album' })
			.then(result => result.albums.total > 0 ? result.albums.items : Promise.reject('Spotify: no matches')),
		  function(albums) {
			if (prefs.diag_mode) console.debug('Spotify lookup by barcode successfull:', barCode, 'matches:', albums);
			info('Spotify', albums[0].external_urls.spotify, albums[0].id);
			return albums[0].href;
		  }
		]);
		if (commonMedia) lookupProviders.push([spotifyLookup, function(album) {
		  info('Spotify', album.external_urls.spotify, album.id);
		  return album.href;
		}]);
		if (barCode) lookupProviders.push([mbLookupByBarcode, mbEpilogue]);
		if (getHomoIdentifier('ASIN')) lookupProviders.push([mbLookupByASIN, mbEpilogue]);
		lookupProviders.push([mbLookup, function(release) {
		  info('MusicBrainz', mbrRlsPrefix + release.id, release.id);
		  return mbrRlsPrefix + release.id;
		}]);
		if (commonMedia) lookupProviders.push([amLookup, function(collection) {
		  info('Apple Music', collection.collectionViewUrl, collection.collectionId);
		  return collection.collectionViewUrl;
		}]);
		if (commonMedia && singleVolume) lookupProviders.push([dzLookup, function(album) {
		  info('Deezer', deezerAlbumPrefix + album.id, album.id);
		  return 'https://api.deezer.com/album/' + album.id;
		}]);
		lookupProviders.push([dcLookup, function(releases) {
		  info('Discogs', discogsOrigin + releases[0].uri, releases[0].id);
		  return releases[0].resource_url;
		}]);
		if (commonMedia) lookupProviders.push([qbLookup, function(album) {
		  info('Qobuz', album.url, album.id);
		  return album.url;
		}]);
		if (commonMedia) lookupProviders.push([tidalLookup, function(album) {
		  info('Tidal', album.url, album.id);
		  return album.url;
		}]);
		lookupProviders.push([suphonLookup, function(album) {
		  info('Supraphonline', album.url, album.id);
		  return album.url;
		}]);
		if (commonMedia && singleVolume) lookupProviders.push([bsLookup, function(release) {
		  info('Beatsource', `https://www.beatsource.com/release/${release.slug}/${release.id}`, release.id);
		  return release.url;
		}]);
		if (commonMedia && singleVolume) lookupProviders.push([tsLookup, function(album) {
		  info('TraxSource', album.url, album.id);
		  return album.url;
		}]);
		if (singleVolume) lookupProviders.push([mbLookupByTOC, mbEpilogue]);
		if (commonMedia) lookupProviders.push([neLookup, function(album) {
		  const albumUrl = 'https://music.163.com/album?id=' + album.id;
		  info('Netease', albumUrl, album.id);
		  return albumUrl;
		}]);
		if (commonMedia && singleVolume) lookupProviders.push([bcLookup, function(album) {
		  info('Bandcamp', album.url, album.id);
		  return album.url;
		}]);
		if (commonMedia && singleVolume) lookupProviders.push([
		  () => queryLastFmAPI('album.getinfo', {
			artist: (isVA ? VA : release.artist),
			album: release.album,
		  }).then(result => result.error ? Promise.reject('Last.fm: ' + result.message) : result.album),
		  function(album) {
			info('Last.fm', album.url, album.id || album.mbid || '#N/A');
			return album; // return object
		  }
		]);

		function lookupProvider(index = 0) {
		  if (!(index < lookupProviders.length)) return Promise.reject('no metadata provider for this release');
		  return lookupProviders[index][0]().then(lookupProviders[index][1]).catch(function(reason) {
			return ++index < lookupProviders.length ? lookupProvider(index)
				: Promise.reject('no online resource matched this release');
		  });
		}

		if (prefs.diag_mode) lookupProviders.forEach(function(lookupProvider, index) {
		  lookupProvider[0]().then(result => { console.debug('metaLookupProviders[', index, '] match:', result) },
		  	reason => { console.debug('metaLookupProviders[', index, '] failed:', reason) });
		});
		return lookupProvider().catch(function(reason) {
		  addMessage('online check not performed (' + reason + ')', 'notice');
		  return Promise.reject('lookupOnlineSource: ' + reason);
		});
	  }

	  function spotifyLookup() {
		function search(title) {
		  let searchTerm = 'album:"' + title + '"';
		  //searchTerm = 'artist:"' + (isVA ? VA : release.artist) + '" ' + searchTerm;
		  if (!isVA) searchTerm = 'artist:"' + release.artist + '" ' + searchTerm;
		  return querySpotifyAPI('search', {
			q: searchTerm,
			type: 'album',
			limit: 50,
		  }).then(function(result) {
			if (result.albums.total <= 0) return Promise.reject('Spotify: no matches');
			if (prefs.diag_mode) console.debug('Spotify search results:', result.albums);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = result.albums.items.filter(album => (!releaseType || (album.album_type == 'single' ?
					  ['Single', 'EP', 'Remix'].map(getReleaseTypeValue).includes(releaseType)
						  : releaseType != getReleaseTypeValue('Single')))
				  && releasesMatch(album.artists.map(artist => artist.name), album.name, i));
			  if (f.length > 1) return Promise.reject('Spotify: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Spotify: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Spotify fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function dzLookup() {
		function search(title) {
		  let query = { album: title }
		  //query.artist = isVA ? VA : release.artist;
		  if (!isVA) query.artist = release.artist;
		  return queryDeezerAPI('search', {
			q: Object.keys(query).map(key => key + ':"' + query[key] + '"').join(' '),
			strict: 'on',
			order: 'RANKING',
		  }).then(function(result) {
			if (result.total <= 0) return Promise.reject('Deezer: no matches');
			if (prefs.diag_mode) console.debug('Deezer search results:', result.data);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = [];
			  result.data.forEach(function(match) {
				if (!releasesMatch(match.artist.name, match.album.title, i)) return;
				if (!f.some(album => album.id == match.album.id)) f.push(match.album);
			  });
			  if (f.length > 1) return Promise.reject('Deezer: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Deezer: no matches');
			if (i >= 2) console.debug('Deezer fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function amLookup() {
		function search(title) {
		  let searchTerm = '"' + title + '"';
		  //searchTerm = '"' + (isVA ? VA : release.artist) + '" ' + searchTerm;
		  if (!isVA) searchTerm = '"' + release.artist + '" ' + searchTerm;
		  return queryItunesAPI('search', {
			term: searchTerm,
			media: 'music',
			entity: 'album',
			//country: 'US',
		  }).then(function(result) {
			if (result.resultCount <= 0) return Promise.reject('Apple Music: no matches');
			if (prefs.diag_mode) console.debug('Apple Music search results:', result.results);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = result.results.filter(function(collection) {
				let isSingle = collection.collectionName.endsWith(' - Single');
				if (isSingle) collection.collectionName = collection.collectionName.slice(0, -9);
				let isEP = collection.collectionName.endsWith(' - EP');
				if (isEP) collection.collectionName = collection.collectionName.slice(0, -5);
				isSingle = isSingle || collection.collectionType == 'Single';
				isEP = !isSingle && (isEP || collection.collectionType == 'EP');
				return (releaseType == getReleaseTypeValue('Single')) == isSingle
				  && (!isEP || releaseType == getReleaseTypeValue('EP'))
				  && releasesMatch(collection.artistName, collection.collectionName, i);
			  });
			  if (f.length > 1 && f.some(collection => /\b(?:explicit)/i.test(collection.collectionExplicitness)))
				f = f.filter(collection => !/\b(?:clean)/i.test(collection.collectionExplicitness));
			  if (f.length > 1) return Promise.reject('Apple Music: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Apple Music: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Apple Music fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function mbLookup() {
		function search(title) {
		  let query = {
			//'artist': isVA ? VA : release.artist,
			'release': title,
		  };
		  if (!isVA) query.artist = release.artist;
		  return queryMusicBrainzAPI('release', {
			query: Object.keys(query).map(key => key + ':"' + query[key] + '"').join(' AND '),
		  }).then(function(result) {
			if (result.count <= 0) return Promise.reject('MusicBrainz: no matches');
			if (prefs.diag_mode) console.debug('MusicBrainz search results:', result.releases);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = result.releases.filter(release => release.quality != 'low'
				  && (media ? [media] : tracks.some(notRedBook) ? ['WEB'] : ['CD', 'WEB'])
					  .some(_media => release.media.map(media => estimateMedia(media.format) || media.format).includes(_media)
				  && releasesMatch(release['artist-credit'].map(artist => artist.name), release.title, i)));
			  if (f.length > 1) return Promise.reject('MusicBrainz: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('MusicBrainz: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('MusicBrainz fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }
	  function mbLookupByBarcode() {
		if (!barCode) return Promise.reject('MusicBrainz: unknown barcode');
		return queryMusicBrainzAPI('release', { query: 'barcode:' + barCode }).then(function(result) {
		  if (result.count <= 0) return Promise.reject('MusicBrainz: no matches');
		  if (prefs.diag_mode) console.debug('MusicBrainz lookup by barcode successfull: ' + barCode + '; matches: ' + result.count);
		  return result.releases;
		});
	  }
	  function mbLookupByASIN() {
		var asin = getHomoIdentifier('ASIN');
		if (!asin) return Promise.reject('MusicBrainz: unknown ASIN');
		asin = asin.replace(/\s+/g, '');
		return queryMusicBrainzAPI('release', { query: 'asin:' + asin }).then(function(result) {
		  if (result.count <= 0) return Promise.reject('MusicBrainz: no matches');
		  if (prefs.diag_mode) console.debug('MusicBrainz lookup by ASIN successfull: ' + asin + '; matches: ' + result.count);
		  return result.releases;
		});
	  }
	  function mbComputeDiscID(mbTOC) {
		if (!Array.isArray(mbTOC) || mbTOC.length != mbTOC[1] - mbTOC[0] + 4 || mbTOC[1] - mbTOC[0] > 98) return null;
		let tocStr = ([mbTOC[0], mbTOC[1]].map(track => track.toString(16).padStart(2, '0'))
			.concat(mbTOC.slice(2).map(offset => offset.toString(16).padStart(8, '0'))).join('') +
			'0'.repeat(98 + mbTOC[0] - mbTOC[1] << 3)).toUpperCase();
		return CryptoJS.SHA1(tocStr).toString(CryptoJS.enc.Base64)
			.replace(/\=/g, '-').replace(/\+/g, '.').replace(/\//g, '_');
	  }
	  function mbLookupByDiscID(mbTOC) {
		if (!Array.isArray(mbTOC) || mbTOC.length != mbTOC[1] - mbTOC[0] + 4)
		  return Promise.reject('mbLookupByDiscID(...): missing or invalid TOC');
		let mbDscId = mbComputeDiscID(mbTOC);
		let params = {
		  toc: mbTOC.join('+'),
		  inc: ['artists'].join('+'),
		};
		if (media != 'CD') params['media-format'] = 'all';
		return queryMusicBrainzAPI('discid/' + (mbDscId || '-'), params).then(function(result) {
		  var matches = Array.isArray(result.releases) ? result.releases
		  	: 'id' in result && 'title' in result ? [result] : null;
		  if (!Array.isArray(matches) || matches.length <= 0) return Promise.reject('MusicBrainz: no matches');
		  if (prefs.diag_mode) console.debug('MusicBrainz lookup by discId/TOC successfull:', mbDscId, '/', params, 'matches:', matches);
		  let minSimilarity = 0.90 - Math.min(tracks.length, 30) / 100;
		  let optedOut = matches.filter(match => titlesMatch(match.title, 3, minSimilarity));
		  return optedOut.length > 0 ? optedOut : matches;
		});
	  }
	  function mbLookupByMetaTOC() {
		if (release.totalDiscs > 1) return Promise.reject('TOC lookup not possible for multidisc release');
		if (tracks.length < 3) return Promise.reject('TOC lookup given up for insufficient tracklist length');
		let TOC;
		if (TOC = getHomoIdentifier('ITUNES_TOC')) { // iTunes scheme
		  TOC = TOC.split('+').map(index => parseInt(index));
		  TOC = [1, TOC[2], TOC[1]].concat(TOC.slice(3));
		} else if (TOC = getHomoIdentifier('CT_TOC')) { // CUETools scheme
		  TOC = TOC.split('+').map(index => parseInt(index, 16));
		  TOC = [1, TOC.shift(), TOC.pop()].concat(TOC);
		}
		return mbLookupByDiscID(TOC);
	  }
	  function mbLookupByAutoTOC() {
		if (release.totalDiscs > 1) return Promise.reject('AutoTOC lookup not possible for multidisc release');
		if (tracks.length < 3) return Promise.reject('AutoTOC lookup given up for insufficient tracklist length');
		if (!tracks.every(track => track.samplerate > 0 && track.samples > 0))
		  return Promise.reject('MusicBrainz: insufficient information for TOC calculation');
		let lastFrame = 0;
		let TOC = [0].concat(tracks.map(track => (lastFrame += Math.round(track.samples * 75 / track.samplerate))))
			.map(offset => 150 + offset);
		TOC.unshift(TOC.pop());
		return mbLookupByDiscID([1, tracks.length].concat(TOC));
	  }
	  function mbLookupByTOC() {
		return mbLookupByMetaTOC().catch(reason => typeof reason == 'string' && !reason.includes('no matches') ?
			mbLookupByAutoTOC() : Promise.reject(reason));
	  }

	  function dcLookup() {
		const search = query => queryDiscogsAPI('database/search', query).then(function(result) {
		  if (result.results.length <= 0) return Promise.reject('Discogs: no matches');
		  if (prefs.diag_mode) console.debug('Discogs search results:', result.results);
		  if (barCode) {
			//if (result.results.length > 1) return Promise.reject('Discogs: ambiguity');
			if (prefs.diag_mode) console.debug('Discogs lookup by barcode successfull: ' +
				barCode + '; matches: ' + result.results.length);
			return result.results;
		  }
		  for (var i = 0; i <= maxFuzzyLevel; ++i) {
			var f = result.results.filter(function(album) {
			  if (media ? Array.isArray(album.format)
				  && !album.format.some(format => estimateMedia(format) == media)
				 : !album.format.some(format => ['CD', 'WEB'].includes(estimateMedia(format)))) return false;
			  if (/^(.+?)\s+\(\d+\)\s+-\s+(.+)$/.test(album.title) || /^(.+?)\s+-\s+(.+)$/.test(album.title))
			  	return releasesMatch(RegExp.$1, RegExp.$2, i);
			  console.warn('Failed to parse Discogs title:', album.title);
			  return false;
			});
			if (f.length > 1) return Promise.reject('Discogs: ambiguity');
			if (f.length == 1) break;
		  }
		  if (i > maxFuzzyLevel) return Promise.reject('Discogs: no matches');
		  if (prefs.diag_mode && i >= 2) console.debug('Discogs fuzzy match:', release, '≈', f[0]);
		  return f;
		});

		let query = { type: 'release' };
		if (barCode) query.barcode = barCode; else {
		  //query.artist = '"' + (isVA ? VA : release.artist) + '"';
		  if (!isVA) query.artist = '"' + release.artist + '"';
		  query.release_title = '"' + release.album + '"';
		  //if (release.labels.length > 0) query.label = release.labels.join('; ');
		  if (release.catalogs.length > 0) query.catno = release.catalogs[0]; //.join('; ');
		}
		return search(query).catch(function(reason) {
		  if (!query.release_title || !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches'))
			return Promise.reject(reason);
		  query.release_title = '"' + release.album.replace(tailingBracketStripper, '') + '"';
		  return search(query);
		});
	  }

	  function qbLookup(market) {
		var url = new URL('https://www.qobuz.com/search');
		if (market) url.pathname = market + url.pathname;

		function search(title) {
		  let searchTerm = title;
		  //searchTerm = (isVA ? VA : release.artist) + ' ' + searchTerm;
		  if (!isVA) searchTerm = release.artist + ' ' + searchTerm;
		  var params = new URLSearchParams({
			q: searchTerm,
			//s: 'rdc', // descending sort by release date
			i: 'boutique',
		  });
		  url.search = params;
		  return globalXHR(url).then(function(response) {
			var results = [];
			response.document.querySelectorAll('div.search-results > div.product').forEach(function(div) {
			  var result = {
				artist: div.querySelector('div.artist-name > a'),
				title: div.querySelector('div.album-title > a'),
				cover: div.querySelector('div.album-cover > a > img'),
				genre: div.querySelector('span.category'),
				label: div.querySelector('span.brand'),
			  };
			  if (result.artist == null || result.title == null) return;
			  result.id = result.title.pathname.replace(/^.*\//, '');
			  result.url = 'https://www.qobuz.com' + result.title.pathname;
			  result.artist = result.artist.textContent.trim();
			  result.title = result.title.textContent.trim();
			  result.cover = result.cover && (result.cover.dataset.src || result.cover.src);
			  result.genre = result.genre
				&& qobuzTranslations.reduce((genre, def) => genre.replace(...def), result.genre.textContent.trim());
			  result.label = result.label && result.label.textContent.trim();
			  if (result.id && result.artist && result.title
				  && !results.some(album => album.id == result.id)) results.push(result);
			});
			if (results.length <= 0) return Promise.reject('Qobuz: no matches');
			if (prefs.diag_mode) console.debug('Qobuz search results:', results);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = results.filter(result => releasesMatch(result.artist, result.title, i));
			  if (f.length > 1) return Promise.reject('Qobuz: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Qobuz: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Qobuz fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function tidalLookup() {
		function search(title) {
		  let searchTerm = '"' + title + '"';
		  //searchTerm = '"' + (isVA ? VA : release.artist) + '" ' + searchTerm;
		  if (!isVA) searchTerm = '"' + release.artist + '" ' + searchTerm;
		  return tracks.length > 1 ? queryTidalAPI('search/albums', { query: searchTerm, limit: 25 }).then(function(result) {
			if (result.totalNumberOfItems <= 0) return Promise.reject('Tidal: no matches');
			if (prefs.diag_mode) console.debug('Tidal search results:', result.items);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = result.items.filter(item => releasesMatch(item.artists.filter(artist => artist.type == 'MAIN')
				  .map(artist => artist.name), item.title, i));
			  if (f.length > 1 && f.some(item => item.explicit)) f = f.filter(item => item.explicit);
			  if (f.length > 1) return Promise.reject('Tidal: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Tidal: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Tidal fuzzy match:', release, '≈', f[0]);
			return f[0];
		  }) : queryTidalAPI('search/tracks', { query: searchTerm, limit: 25 }).then(function(result) {
			if (result.totalNumberOfItems <= 0) return Promise.reject('Tidal: no matches');
			if (prefs.diag_mode) console.debug('Tidal search results:', result.items);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = [];
			  result.items.forEach(function(item) {
				if (!releasesMatch(item.artists.filter(artist => artist.type == 'MAIN').map(artist => artist.name),
				  item.album.title, i) || albums.findIndex(album => album.id == item.album.id) >= 0) return;
				item.album.explicit = item.explicit;
				item.album.url = 'https://www.tidal.com/album/' + item.album.id;
				albums.push(item.album);
			  });
			  if (f.length > 1 && f.some(album => album.explicit)) f = f.filter(album => album.explicit);
			  if (f.length > 1) return Promise.reject('Tidal: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Tidal: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Tidal fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function tsLookup() {
		function search(searchTerm) {
		  let query = new URLSearchParams({ term: '"' + searchTerm + '"' });
		  return globalXHR('https://www.traxsource.com/search/titles?' + query).then(function(response) {
			var results = Array.from(response.document.querySelectorAll('div.release-grid div.grid-page > div.grid-item')).map(function(div) {
			  var result = { id: parseInt(div.dataset.tid) }, elem = div.querySelector('div.ellip');
			  if (elem != null) result.artist = elem.childNodes[2].textContent.trim();
			  if ((elem = div.querySelector('div.ellip a.com-title')) != null) {
				result.album = elem.textContent.trim();
				result.url = 'https://www.traxsource.com' + elem.pathname;
			  }
			  if ((elem = div.querySelector('div.ellip a.com-label')) != null)
				result.label = elem.textContent.trim();
			  if ((elem = div.querySelector('div.grid-image img')) != null)
				result.cover = elem.src.replace(/\/scripts\/.+\/\d+x\d+\//i, '/files/images/');
			  return result;
			});
			if (results.length <= 0) return Promise.reject('TraxSource: no matches');
			if (prefs.diag_mode) console.debug('TraxSource search results:', results);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = results.filter(result => releasesMatch(result.artist, result.album, i));
			  if (f.length > 1) return Promise.reject('TraxSource: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('TraxSource: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('TraxSource fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(reason => tailingBracketStripper.test(release.album)
			&& reason.endsWith('no matches') ? search(release.album.replace(tailingBracketStripper, ''))
				: Promise.reject(reason));
	  }

	  function suphonLookup() {
		function search(title) {
		  let searchTerm = '"' + title + '"';
		  //searchTerm = '"' + (isVA ? VA : release.artist) + '" ' + searchTerm;
		  if (!isVA) searchTerm = '"' + release.artist + '" ' + searchTerm;
		  return globalXHR('https://www.supraphonline.cz/vyhledavani?q=' + encodeURIComponent(searchTerm)).then(function(response) {
			var results = Array.from(response.document.querySelectorAll('div.albumlist > ul > li')).map(function(div) {
			  var result = { }, elem = div.querySelector('div.title a');
			  if (elem != null) {
				if (/\/album\/(\d+)\b/i.test(elem.pathname)) result.id = parseInt(RegExp.$1);
				result.album = elem.title || elem.textContent.trim();
				result.url = 'https://www.supraphonline.cz' + elem.pathname;
			  }
			  if ((elem = div.querySelector('div.subtitle')) != null)
				result.artist = elem.title || elem.textContent.trim();
			  if ((elem = div.querySelector('span.image img')) != null) result.cover = elem.src;
			  return result;
			});
			if (results.length <= 0) return Promise.reject('Supraphonline: no matches');
			if (prefs.diag_mode) console.debug('Supraphonline search results:', results);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = results.filter(result => releasesMatch(result.artist, result.album, i));
			  if (f.length > 1) return Promise.reject('Supraphonline: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Supraphonline: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Supraphonline fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function bsLookup() {
		function search(title) {
		  let searchTerm = '"' + title + '"';
		  //searchTerm = '"' + (isVA ? VA : release.artist) + '" ' + searchTerm;
		  if (!isVA) searchTerm = '"' + release.artist + '" ' + searchTerm;
		  return queryBeatsourceAPI('search', {
			'q': searchTerm,
			'type': 'releases',
			'per_page': 30,
			//'order_by': '-publish_date',
		  }).then(function(result) {
			if (!Array.isArray(result.releases) || result.releases.length <= 0)
			  return Promise.reject('Beatsource: no matches');
			if (prefs.diag_mode) console.debug('Beatsource search results:', result.releases);
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = result.releases
				  .filter(release => releasesMatch(release.artists.map(artist => artist.name), release.name, i));
			  if (f.length > 1 && f.some(release => release.is_explicit)) f = f.filter(release => release.is_explicit);
			  if (f.length > 1) return Promise.reject('Beatsource: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Beatsource: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Beatsource fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function neLookup() {
		function search(title) {
		  const start = Date.now();
		  let query = {
			s: '"' + title + '"',
			limit: 25,
			type: 10,
			//csrf_token: '',
		  };
		  //query.s = '"' + (isVA ? VA : release.artist) + '" ' + query.s;
		  if (!isVA) query.s = '"' + release.artist + '" ' + query.s;
		  return queryNeteaseAPI('cloudsearch/get/web', query).then(function(result) {
			return !result.abroad ? result.result : new Promise(function(resolve, reject) {
			  function onCoreLoaded(elem = coreJS) {
				if ([/*'asrsea', */'settmusic'].every(function(pubSym) {
				  try { return typeof eval(pubSym) == 'function' } catch(e) { return false }
				})) resolve(elem); else reject('core.js public functions not available');
			  }
			  function injectScript(src, errorHandler = reject) {
				if (!urlParser.test(src)) throw 'Assertion failed: invalid src';
				coreJS = document.createElement('script');
				coreJS.id = 'netease.core.js';
				coreJS.type = 'text/javascript';
				coreJS.async = false;
				coreJS.onload = evt => { onCoreLoaded(evt.target) };
				coreJS.onerror = function(evt) {
				  document.head.removeChild(evt.target);
				  console.error('Netease core.js (' + src + ') loading error', evt);
				  if (typeof errorHandler == 'function') errorHandler(evt);
				};
				coreJS.src = src;
				document.head.append(coreJS);
			  }

			  var coreJS = document.getElementById('netease.core.js');
			  if (coreJS != null) return onCoreLoaded();
			  injectScript('https://s3.music.126.net/web/s/core.js', function(evt) {
				console.warn('Netease generic core.js load failed, trying to fetch proper url from root doc');
				globalXHR('https://music.163.com/').then(function(response) {
				  var script = response.document.querySelector(':root > body > script[src*="/core"]');
				  if (script != null) injectScript(script.src, evt => { reject('Netease core.js loading error') });
					else reject('invalid root document structure');
				}, reject);
			  });
			}).then(core => JSON.parse(decodeURIComponent(settmusic(result.result, 'fuck~#$%^&*(458'))));
		  }).then(result => result.albumCount > 0 ? result.albums : Promise.reject('Netease: no matches'), function(reason) {
			console.warn('Netease search-list method failed:', reason);
			query.s = '"' + title + '"'; // ?
			query.limit = 50;
			return queryNeteaseAPI('search/suggest/web', query).then(result => result.result.albums);
		  }).then(function(albums) {
			if (!Array.isArray(albums) || albums.length <= 0) return Promise.reject('Netease: no matches');
			if (prefs.diag_mode) console.debug('Netease search results:', albums, 'in', (Date.now() - start) / 1000, 's');
			for (var i = 0; i <= maxFuzzyLevel; ++i) {
			  var f = albums.filter(album => (album.type != 'EP/Single' || !releaseType // "专辑" == "album"
					  || ['Single', 'EP', 'Remix'].map(getReleaseTypeValue).includes(releaseType))
				  && releasesMatch(Array.isArray(album.artists) ?
					  album.artists.map(artist => artist.name) : album.artist.name, album.name, i));
			  if (f.length > 1) return Promise.reject('Netease: ambiguity');
			  if (f.length == 1) break;
			}
			if (i > maxFuzzyLevel) return Promise.reject('Netease: no matches');
			if (prefs.diag_mode && i >= 2) console.debug('Netease fuzzy match:', release, '≈', f[0]);
			return f[0];
		  });
		}

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function bcLookup() {
		const search = title => queryBandcampAPI('fuzzysearch/1/autocomplete', { q: title }).then(function(result) {
		  if (!Array.isArray(result.auto.results) || result.auto.results.length <= 0)
			return Promise.reject('Bandcamp: no matches');
		  if (prefs.diag_mode) console.debug('Bandcamp search results:', result.auto.results);
		  for (var i = 0; i <= maxFuzzyLevel; ++i) {
			var f = result.auto.results
				.filter(result => result.type == 'a' && releasesMatch(result.band_name, result.name, i));
			if (f.length > 1) return Promise.reject('Bandcamp: ambiguity');
			if (f.length == 1) break;
		  }
		  if (i > maxFuzzyLevel) return Promise.reject('Bandcamp: no matches');
		  if (prefs.diag_mode && i >= 2) console.debug('Bandcamp fuzzy match:', release, '≈', f[0]);
		  return f[0];
		});

		return search(release.album).catch(function(reason) {
		  return !tailingBracketStripper.test(release.album) || !reason.endsWith('no matches') ? Promise.reject(reason)
		  	: search(release.album.replace(tailingBracketStripper, ''));
		});
	  }

	  function ruleLink(rule) {
		return ' (<a href="/rules.php?p=upload#r' + rule + '" target="_blank" style="' +
		  hyperlinkStyle + '">' + rule + '</a>)';
	  }

	  function releasesMatch(remoteArtist, remoteTitle, relaxLevel = 0, minSimilarity = 0.9, minFullSimilarity) {
		if (typeof remoteArtist == 'string') {
		  if (isVA != vaParser.test(remoteArtist)) return false;
		  if (!isVA) remoteArtist = getArtists(remoteArtist)[0];
		} else if (!Array.isArray(remoteArtist)) return false;
		if (!isVA && !artists[0].equalCaselessTo(remoteArtist)
			&& !artists[0].map(name => name.toASCII()).equalCaselessTo(remoteArtist.map(name => name.toASCII())))
		  return false;
		return titlesMatch(remoteTitle, relaxLevel, minSimilarity, minFullSimilarity);
	  }

	  function titlesMatch(remoteTitle, relaxLevel = 0, minSimilarity = undefined, minStrippedSimilarity = undefined) {
		if (!remoteTitle) return false;
		if (typeof remoteTitle == 'string') remoteTitle = remoteTitle.toLowerCase(); else return false;
		let localTitles = [release.album.toLowerCase(), album.toLowerCase()];
		// relax level 0: strict caseless equality
		if (localTitles[0] == remoteTitle) return true;
		if (!(relaxLevel >= 1)) return false;
		// relax level 1: strict caseless equality of stripped accents
		if (localTitles[0].toASCII() == remoteTitle.toASCII()) return true;
		if (!(relaxLevel >= 2)) return false;
		// relax level 2: fuzzy caseless equality
		if (!(minSimilarity > 0)) minSimilarity = 0.90;
		let similarity = jaroWrinkerSimilarity(localTitles[0], remoteTitle);
		if (minSimilarity < 1 && similarity >= minSimilarity) {
		  if (prefs.diag_mode) console.debug('Fuzzy similarity accepted: "' +
			localTitles[0] + '" ≈ "' + remoteTitle + '" (' + Math.round(similarity * 1000) / 1000 + ')');
		  return true;
		}
		if (!(relaxLevel >= 3)) return false;
		// relax level 3: exact caseless equality with stripped all tailing brackets
		let strippedTitles = [localTitles[0], remoteTitle].map(title => title.replace(tailingBracketStripper, ''));
		if (strippedTitles[0] == strippedTitles[1]) return true;
		if (!(relaxLevel >= 4)) return false;
		// relax level 4: any mutual exact caseless start
		if (localTitles[0].startsWith(remoteTitle) || remoteTitle.startsWith(localTitles[0])
		   || localTitles[1].startsWith(remoteTitle) || remoteTitle.startsWith(localTitles[1])) return true;
		if (!(relaxLevel >= 5)) return false;
		// relax level 5: fuzzy caseless equality of any stripped variant
		if (!(minStrippedSimilarity > 0)) minStrippedSimilarity = minSimilarity + 0.05;
		if (minStrippedSimilarity < 1) {
		  similarity = jaroWrinkerSimilarity(localTitles[1], remoteTitle);
		  if (similarity >= minStrippedSimilarity) {
			if (prefs.diag_mode) console.debug('Fuzzy similarity accepted: "' +
			  fullLocalTitle + '" ≈ "' + remoteTitle + '" (' + Math.round(similarity * 1000) / 1000 + ')');
			return true;
		  }
		  similarity = jaroWrinkerSimilarity(strippedTitles[0], strippedTitles[1]);
		  if (similarity >= minStrippedSimilarity) {
			if (prefs.diag_mode) console.debug('Fuzzy similarity accepted: "' +
			  strippedTitles[0] + '" ≈ "' + strippedTitles[1] + '" (' + Math.round(similarity * 1000) / 1000 + ')');
			return true;
		  }
		}
		//if (!(relaxLevel >= 6)) return false;
		// relax level 5: strict mutual titles match anywhere
		if (localTitles[0].includes(remoteTitle) || remoteTitle.includes(localTitles[0])
		   || localTitles[1].includes(remoteTitle) || remoteTitle.includes(localTitles[1])) return true;
		return false;
	  }

	  function trackComparer(a, b) {
		var cmp;
		if (release.totalDiscs > 1) {
		  cmp = a.disc_number - b.disc_number;
		  if (!isNaN(cmp) && cmp != 0) return cmp;
		} else {
		  cmp = (a.disc_subtitle || '').localeCompare(b.disc_subtitle || '');
		  //if (cmp != 0) return cmp;
		}
		cmp = parseInt(a.track_number) - parseInt(b.track_number);
		if (!isNaN(cmp)) return cmp;
		var m1 = vinyltrackParser.exec(a.track_number.toUpperCase());
		var m2 = vinyltrackParser.exec(b.track_number.toUpperCase());
		return m1 != null && m2 != null ?
		  m1[1].localeCompare(m2[1]) || parseFloat(m1[2]) - parseFloat(m2[2]) :
		a.track_number.toUpperCase().localeCompare(b.track_number.toUpperCase());
	  }

	  function reqSelectFormats(...vals) {
		vals.forEach(function(val) {
		  ['MP3', 'FLAC', 'AAC', 'AC3', 'DTS'].forEach(function(fmt, ndx) {
			if (val.toLowerCase() == fmt.toLowerCase() && (ref = document.getElementById('format_' + ndx)) != null) {
			  ref.checked = true;
			  ref.onchange();
			}
		  });
		});
	  }

	  function reqSelectBitrates(...vals) {
		const bitrateSet = !isOPS ? [
		  192, 'APS (VBR)', 'V2 (VBR)', 'V1 (VBR)', 256, 'APX (VBR)',
		  'V0 (VBR)', 320, 'Lossless', '24bit Lossless', 'Other',
		] : [
		  192, 'APS (VBR)', 'V2 (VBR)', 'V1 (VBR)', 256, 'APX (VBR)',
		  'V0 (VBR)', 'q8.x (VBR)', 320, 'Lossless', '24bit Lossless', 'Other',
		];
		vals.forEach(function(val) {
		  var ndx = 10;
		  bitrateSet.forEach((it, _ndx) => { if (val.toString().toLowerCase() == it.toString().toLowerCase()) ndx = _ndx });
		  if ((ref = document.getElementById('bitrate_' + ndx)) != null) {
			ref.checked = true;
			ref.onchange();
		  }
		});
	  }

	  function reqSelectMedias(...vals) {
		const mediaSet = !isOPS ? ['CD', 'DVD', 'Vinyl', 'Soundboard', 'SACD', 'DAT', 'Cassette', 'WEB', 'Blu-Ray']
			: ['CD', 'DVD', 'Vinyl', 'BD', 'Soundboard', 'SACD', 'DAT', 'Cassette', 'WEB'];
		vals.forEach(function(val) {
		  mediaSet.forEach(function(med, ndx) {
			if (val == med && (ref = document.getElementById('media_' + ndx)) != null) {
			  ref.checked = true;
			  ref.onchange();
			}
		  });
		  if (val == 'CD') {
			if ((ref = document.getElementById('needlog')) != null) {
			  ref.checked = true;
			  ref.onchange();
			  if ((ref = document.getElementById('minlogscore')) != null) ref.value = 100;
			}
			if ((ref = document.getElementById('needcue')) != null) ref.checked = true;
			//if ((ref = document.getElementById('needchecksum')) != null) ref.checked = true;
		  }
		});
	  }

	  function getReleaseTypeValue(str) {
		if (!str || typeof str != 'string') return 0;
		if (!Array.isArray(releaseTypes) || releaseTypes.length <= 0)
		  releaseTypes = Array.from(document.querySelectorAll('select#releasetype > option[value]'))
		  	.map(option => [option.text.trim(), parseInt(option.value)]);
		if (!Array.isArray(releaseTypes) || releaseTypes.length <= 0) releaseTypes = [
		  ['Album', 1],
		  ['Soundtrack', 3],
		  ['EP', 5],
		  ['Anthology', 6],
		  ['Compilation', 7],
		  ['Single', 9],
		  ['Live album', 11],
		  ['Remix', 13],
		  ['Bootleg', 14],
		  ['Interview', 15],
		  ['Mixtape', 16],
		  [isOPS ? 'DJ Mix' : 'Demo', 17],
		  ['Concert Recording', 18],
		  ['DJ Mix', 19],
		  ['Unknown', 21],
		];
		let index = releaseTypes.findIndex(releaseType => str.toLowerCase() == releaseType[0].toLowerCase());
		return index >= 0 ? releaseTypes[index][1] : 0;
	  }

	  function stringifyReleaseType(releaseType) {
		if (!Array.isArray(releaseTypes) || releaseTypes.length <= 0 || !(releaseType > 0)) return null;
		let index = releaseTypes.findIndex(_releaseType => releaseType == _releaseType[1]);
		return index >= 0 ? releaseTypes[index][0] : null;
	  }

	  function getArtistTypeValue(str) {
		if (!str || typeof str != 'string') return 0;
		if (!Array.isArray(artistTypes) || artistTypes.length <= 0)
		  artistTypes = Array.from(document.querySelectorAll('select#importance > option[value]'))
		  	.map(option => [option.text.trim(), parseInt(option.value)]);
		if (!Array.isArray(artistTypes) || artistTypes.length <= 0) artistTypes = [
		  ['Main', 1],
		  ['Guest', 2],
		  ['Composer', 4],
		  ['Conductor', 5],
		  ['DJ / Compiler', 6],
		  ['Remixer', 3],
		  ['Producer', 7],
		];
		let index = artistTypes.findIndex(artistType => str.toLowerCase() == artistType[0].toLowerCase());
		return index >= 0 ? artistTypes[index][1] : 0;
	  }

	  function getChanString(n) {
		if (!n) return null;
		const chanmap = [
		  'mono',
		  'stereo',
		  '2.1',
		  '4.0 surround sound',
		  '5.0 surround sound',
		  '5.1 surround sound',
		  '7.0 surround sound',
		  '7.1 surround sound',
		];
		return n >= 1 && n <= 8 ? chanmap[n - 1] : n + 'chn surround sound';
	  }

	  function fetchOnlineAdditions() {
		if (onlineSource) return Promise.reject('Not offline source');
		var url = sourceUrl || release.urls[0];
		if (!urlParser.test(url)) return Promise.reject('No valid URL to parse');
		if (url.toLowerCase().includes('highresaudio.com/'))
		 	return globalXHR(url).then(response => hraPdfBooklet(response) || Promise.reject('No PDF booklet'));
		else if (url.toLowerCase().includes('actmusic.com/')) return globalXHR(url.replace('actmusic.com/de', 'actmusic.com/en')).then(function(response) {
		  if ((ref = response.document.querySelector('div.sh3 > h1.header_title > a.btn-arrow-right')) == null)
			return Promise.reject('Release full info not found');
		  return globalXHR('https://www.actmusic.com' + ref.pathname).then(actPdfBooklet);
		}); else if (url.toLowerCase().includes('eclassical.com/'))
		  return globalXHR(url).then(response => eclassicalBooklets(response) || Promise.reject('No PDF booklet'));
		else if (url.toLowerCase().includes('nativedsd.com/catalogue/albums/'))
		  return globalXHR(url).then(response => nativeDSDBooklets(response) || Promise.reject('No PDF booklet'));
		return Promise.reject('No online source containing additions');
	  }

	  function processTrackArtists(track) {
		['artist', 'featured_artist', 'performer', 'remixer', 'composer', 'conductor', 'compiler', 'producer'].forEach(function(role) {
		  const isPseudoArtist = artist => [
			//pseudoArtistParsers[0],
			pseudoArtistParsers[1],
			pseudoArtistParsers[4],
		  ].some((rx, index) => rx.test(artist));
		  if (track[role] && isPseudoArtist(track[role])) delete track[role];
		  let arrPropName = role + 's';
		  if (!Array.isArray(track[arrPropName])) return;
		  if (track[arrPropName].length <= 0) delete track[arrPropName]; else
			track[arrPropName] = track[arrPropName].filter(artist => !isPseudoArtist(artist));
		});
		if (!track.artist && Array.isArray(track.artists) && track.artists.length > 0) {
		  track.artist = joinArtists(track.artists);
		  if (Array.isArray(track.featured_artists) && track.featured_artists.length > 0)
			track.artist += ' feat. ' + joinArtists(track.featured_artists);
		}
		if (!track.track_artist && Array.isArray(track.track_artists) && track.track_artists.length > 0) {
		  track.track_artist = joinArtists(track.track_artists);
		  if (Array.isArray(track.track_guests) && track.track_guests.length > 0)
			track.track_artist += ' feat. ' + joinArtists(track.track_guests);
		}
		['performer', 'remixer', 'composer', 'conductor', 'compiler', 'producer'].forEach(function(role) {
		  var arrPropName = role + 's';
		  if (!track[role] && Array.isArray(track[arrPropName]) && track[arrPropName].length > 0)
			track[role] = track[arrPropName].join(role == 'composer' ? ', ' : '; ');
		});
	  }
	} // parseTracks

	function estimateMedia(mediaStr) {
	  return typeof mediaStr == 'string' && [
		[/\b(?:BR?D|BR)\b/, isOPS ? 'BD' : 'Blu-Ray'],
		[/\b(?:Blu[\-\s]?Ray)\b/i, isOPS ? 'BD' : 'Blu-Ray'],
		[/\b(?:SA-?CD)\b/, 'SACD'],
		//[/\b(?:Hybrid)\b/i, 'SACD'],
		[/\b(?:(?:HD[\-\s]?)?DVD(?:\-?A)?)\b/, 'DVD'],
		[/\b(?:Vinyl)\b/i, 'Vinyl'],
		[/\b(?:[LS]P\b|(?:5|6|7|8|9|10|12)")/, 'Vinyl'],
		[/\b(?:(?:Micro)?Cassette)/i, 'Cassette'],
		[/\b(?:WEB|File|Download|Digital\s+(?:Media|Distribution))\b|^Digital$/i, 'WEB'],
		[/\b(?:AAC|AIFC|AIFF|ALAC|AMR|APE|DFF|DSD|FLAC|MP2|MP3|ogg-vorbis|Opus|SHN|WAV|WavPack|WMA|WMV)\b/i, 'WEB'],
		//[/\b(?:DAT)\b/, 'DAT'],
		[/\b(?:Soundboard)\b/i, 'Soundboard'],
		[/\b(?:(?:HD[\-\s]?)?CD|CD[IiRr])\b/, 'CD'],
	  ].reduce((media, def) => media || def[0].test(mediaStr) && def[1], false) || undefined;
	}

	function hraPdfBooklet(response) {
	  let ref = response.document.querySelector('form#pdfjs-form-w2[action]');
	  if (ref == null) return undefined;
	  ref = new URLSearchParams(ref.action.replace(/^.*\?/, ''));
	  return `[url=${ref.get('file')}][img]https://ptpimg.me/ts0fy8.png[/img][/url]`;
	}

	function actPdfBooklet(response) {
	  let link;
	  response.document.querySelectorAll('ul.linklist > li > a').forEach(function(a) {
		if (!a.pathname.endsWith('.pdf')) return;
		if (!link || a.textContent.toLowerCase().includes('english')) link = a.pathname;
	  });
	  return link ? `[url=https://www.actmusic.com${link}][img]https://ptpimg.me/ts0fy8.png[/img][/url]` : undefined;
	}

	function eclassicalBooklets(response) {
	  let origin = new URL(response.finalUrl).origin;
	  return Array.from(response.document.querySelectorAll('div.articleAttachmentsContainer > ul > li > a'))
	  	.filter(a => a.href.endsWith('.pdf')).map(a => origin + a.pathname + a.search)
		.map(url => '[url=' + url + '][img]https://ptpimg.me/ts0fy8.png[/img][/url]').join(' ') || undefined;
	}

	function nativeDSDBooklets(response) {
	  return Array.from(response.document.querySelectorAll('div.product-cover a.link'))
	  	.filter(a => a.href.endsWith('.pdf')).map(a => a.href)
		.map(url => '[url=' + url + '][img]https://ptpimg.me/ts0fy8.png[/img][/url]').join(' ') || undefined;
	}

	function fetchOnline_Music(url, weak = false) {
	  if (!urlParser.test(url)) return Promise.reject('Invalid URL');
	  if (!(url instanceof URL)) url = new URL(url);
	  const discParser = /^(?:CD|DIS[CK]\s+|VOLUME\s+|DISCO\s+|DISQUE\s+)(\d+)(?:\s+of\s+(\d+))?$/i;
	  let ref, artist, album, albumYear, releaseDate, channels, label, composer, bitdepth, samplerate = 44100,
		  description, compiler, producer, totalTracks, discSubtitle, discNumber, trackNumber, totalDiscs,
		  title, trackArtist, catalogue, encoding, format, bitrate, duration, country, media = 'WEB', imgUrl,
		  matches, genres = [], trs, tracks = [], identifiers = {}, trackIdentifiers = {};
	  if (url.hostname.endsWith('qobuz.com')) return globalXHR(url).then(function(response) {
		const error = new Error('Failed to parse Qobus release page');
		identifiers.QOBUZ_ID = response.finalUrl.replace(/^.*\//, '');
		if ((ref = response.document.querySelector('section.album-item[data-gtm]')) != null) try {
		  let gtm = JSON.parse(ref.dataset.gtm);
		  //if (gtm.shop.category) genres.push(gtm.shop.category);
		  if (gtm.shop.subCategory) genres.pushUniqueCaseless(gtm.shop.subCategory);
		} catch(e) { console.warn(e) }
		if ((ref = response.document.querySelector('div.album-meta > h2.album-meta__artist')) != null)
			artist = ref.title || ref.textContent.trim();
		isVA = vaParser.test(artist);
		album = (ref = response.document.querySelector('div.album-meta > h1.album-meta__title')) != null ?
			ref.title || ref.textContent.trim() : undefined;
		if ((ref = response.document.querySelector('div.album-meta > ul > li:first-of-type')) != null)
		  releaseDate = normalizeDate(ref.textContent, /\/([a-z]{2})-[a-z]{2}\//i.test(url.pathname) ? RegExp.$1 : 'fr');
		var mainArtist = (ref = response.document.querySelector('div.album-meta > ul > li:nth-of-type(2) > a')) != null ?
			ref.title || ref.textContent.trim() : undefined;
		//ref = response.document.querySelector('p.album-about__copyright');
		//if (ref != null) albumYear = extractYear(ref.textContent);
		response.document.querySelectorAll('section#about > ul > li').forEach(function(it) {
		  function matchLabel(lbl) { return it.textContent.trimLeft().startsWith(lbl) }
		  if (/\b(\d+)\s*(?:dis[ck]|disco|disque)/i.test(it.textContent)) totalDiscs = parseInt(RegExp.$1);
		  if (/\b(\d+)\s*(?:track|pist[ae]|tracce|traccia)/i.test(it.textContent)) totalTracks = parseInt(RegExp.$1);
		  if (['Label', 'Etichetta', 'Sello'].some(l => it.textContent.trimLeft().startsWith(l))) {
			label = it.firstElementChild.textContent.replace(/\s+/g, ' ').trim();
		  }
		  else if (['Composer', 'Compositeur', 'Komponist', 'Compositore', 'Compositor'].some(matchLabel)) {
			composer = it.firstElementChild.textContent.trim();
			if (pseudoArtistParsers.slice(0, 5).some(rx => rx.test(composer))) composer = undefined;
		  } else if (['Genre', 'Genere', 'Género'].some(g => it.textContent.startsWith(g)) && it.childElementCount > 0
				&& genres.length <= 0) {
			genres = Array.from(it.querySelectorAll('a')).map(elem => elem.textContent.trim());
/*
			if (genres.length >= 1 && ['Pop/Rock'].includes(genres[0])) genres.shift();
			if (genres.length >= 2 && ['Alternative & Indie'].includes(genres[genres.length - 1])) genres.shift();
			if (genres.length >= 1 && ['Metal', 'Heavy Metal'].some(genre => genres.includes(genre))) {
			  while (genres.length > 1) genres.shift();
			}
*/
			while (genres.length > 1) genres.shift();
		  }
		});
		response.document.querySelectorAll('span.album-quality__info').forEach(function(span) {
		  if (/\b(\d+(?:[\,\.]\d+)?)\s*(?:kHz)\b/i.test(span.textContent))
			samplerate = Math.round(parseFloat(RegExp.$1.replace(',', '.')) * 1000);
		  if (/\b(\d+)[\-\s]*(?:Bits?)\b/i.test(span.textContent)) bitdepth = parseInt(RegExp.$1);
		  if (/\b(?:Stereo)\b/i.test(span.textContent)) channels = 2;
		  	else if (/\b(\d)\.(\d)\b/.test(span.textContent)) channels = parseInt(RegExp.$1) + parseInt(RegExp.$2);
		});
		getDescription(response, 'section#description > p', true);
		if ((ref = response.document.querySelector('a[title="Qobuzissime"]')) != null) {
		  if (description) description += '\n';
		  description += '[align=center][url=https://www.qobuz.com' + ref.pathname +
			'][img]https://ptpimg.me/4z35uj.png[/img][/url][/align]';
		}
		if ((ref = response.document.querySelector('div.album-cover > img')) != null)
			imgUrl = ref.src.replace(/_\d{3}(?=\.\w+$)/, '_org');
		addTracks(response.document);
		if (totalTracks <= 50) return finalizeTracks();
		var params = new URLSearchParams({
		  albumId: identifiers.QOBUZ_ID,
		  offset: 50,
		  limit: 999,
		  store: /\/(\w{2}-\w{2})\/album\//i.test(response.finalUrl) ? RegExp.$1 : 'fr-fr',
		});
		return globalXHR('https://www.qobuz.com/v4/ajax/album/load-tracks?' + params)
		  .then(response => { addTracks(response.document) }, function(reason) {
			console.error('globalXHR() failed:', reason);
			addMessage('failed to load all tracks for long album, only first 50 tracks were extracted from HTML, which will result in incmplete release description', 'notice');
		  }).then(() => finalizeTracks());

		function addTracks(dom) {
		  Array.prototype.push.apply(tracks, Array.from(dom.querySelectorAll('div.player__item > div.player__tracks > div.track > div.track__items')).map(function(tr, index) {
			trackArtist = false; trackIdentifiers = { TRACK_ID: tr.parentNode.dataset.track };
			let trackArtists = [];
			for (i = 0; i < qobuzArtistLabels.length + 1; ++i) trackArtists[i] = [];
			if ((ref = tr.parentNode.querySelector('p.track__info[itemprop="byArtist"]')) != null) {
			  ref.textContent.trim().split(/\s+-\s+/).map(it => it.split(/\s*,\s*/)).forEach(function(it) {
				if (it.length > 1) qobuzArtistLabels.forEach(function(artistLabels, index) {
				  if (artistLabels.some(role => it.slice(1).includes(role))) trackArtists[index].pushUniqueCaseless(it[0]);
				}); else {
				  trackArtists[qobuzArtistLabels.length].pushUnique(it[0]);
				  if (prefs.diag_mode) console.debug('Qobuz uncategorized personnel:', it[0]);
				}
			  });
			  //if (prefs.diag_mode) console.debug('Qobuz track', index + 1, trackArtists);
			  //trackArtists[0] = trackArtists[0].filter(artist => !trackArtists[4].includes(artist));
			}
			if ((ref = tr.querySelector('div.track__item--name[itemprop="performer"] > span')) != null
				&& (i = ref.textContent.trim())) {
			  if (trackArtists[0].length <= 0) trackArtists[0] = [i];
			  if (trackArtists[2].length <= 0) trackArtists[2] = [i];
			}
			for (i = 0; i < trackArtists.length; ++i) if (i != 3) trackArtists[i] = trackArtists[i].filter(trackArtist => ![
			  pseudoArtistParsers[0],
			  pseudoArtistParsers[1],
			  pseudoArtistParsers[4],
			].some(rx => rx.test(trackArtist)));
			trackArtists[1] = trackArtists[1].filter(artist => ![0, 4].some(index => trackArtists[index].includes(artist)));
			trackArtist = isVA || !artistsMatch(trackArtists, artist);
			let trackGenres = Array.from(genres);
			//if (prefs.diag_mode) console.debug('\tFiltered:', trackArtists[0], trackArtists[1]);
			if (tr.parentNode.dataset.gtm) try {
			  let gtm = JSON.parse(tr.parentNode.dataset.gtm);
			  if (gtm.product.id) trackIdentifiers.QOBUZ_ID = gtm.product.id;
			  if (gtm.product.type && gtm.product.type.toLowerCase() != 'album')
				trackIdentifiers.RELEASETYPE = gtm.product.type;
			  if (gtm.product.subCategory) trackGenres.pushUniqueCaseless(gtm.product.subCategory.replace(/-/g, ' '));
			} catch(e) { console.warn(e) }
			if ((ref = tr.parentNode.parentNode.parentNode.querySelector('p.player__work:first-child')) != null) {
			  discSubtitle = ref.textContent.replace(/\s+/g, ' ').trim();
			  guessDiscNumber();
			}
			return {
			  artist: isVA ? VA : artist,
			  album: album,
			  album_year: albumYear,
			  release_date: releaseDate,
			  label: label,
			  encoding: 'lossless',
			  codec: 'FLAC',
			  bitdepth: bitdepth || undefined,
			  samplerate: samplerate || undefined,
			  channels: channels || undefined,
			  media: media,
			  genre: trackGenres.map(function(genre) {
				genre = genre.replace(/-/g, ' ');
				qobuzTranslations.forEach(function(it) {
				  if (genre.toASCII().toLowerCase() == it[0].toASCII().toLowerCase()) genre = it[1];
				});
				return genre;
			  }).join('; '),
			  disc_number: discNumber || 1,
			  total_discs: totalDiscs,
			  disc_subtitle: discSubtitle,
			  track_number: parseInt(tr.querySelector('span[itemprop="position"]').textContent),
			  total_tracks: totalTracks,
			  title: (tr.querySelector('div.track__item--name[itemprop="name"] > span') || tr.querySelector('span.track__item--name'))
			  	.textContent.trim().replace(/\s+/g, ' '),
			  track_artists: trackArtist && trackArtists[0].length > 0 ? trackArtists[0] : undefined,
			  track_guests: trackArtist && trackArtists[1].length > 0 ? trackArtists[1] : undefined,
			  composer: trackArtists[3].length <= 0 ? composer : undefined,
			  composers: trackArtists[3].length > 0 ? trackArtists[3] : undefined,
			  performers: trackArtists[2].length > 0 ? trackArtists[2] : undefined,
			  conductors: trackArtists[4].length > 0 ? trackArtists[4] : undefined,
			  remixers: trackArtists[5].length > 0 ? trackArtists[5] : undefined,
			  producers: trackArtists[6].length > 0 ? trackArtists[6] : undefined,
			  duration: timeStringToTime(tr.querySelector('span.track__item--duration').textContent),
			  url: response.finalUrl,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  }));
		}
	  }); else if (url.hostname.endsWith('highresaudio.com') && url.pathname.includes('/album/view/')) return globalXHR(url).then(function(response) {
		if (/\/album\/view\/(\w+)\//i.test(response.finalUrl)) identifiers.HRA_ID = RegExp.$1;
		if (/\b(?:ClassHraJWP)\("hratrackplayer"\)\.init\((\[.+\])\);/m.test(response.responseText)) try {
		  var hraTrackPlayer = JSON.parse(RegExp.$1);
		  if (prefs.diag_mode) console.debug('hraTrackPlayer:', hraTrackPlayer);
		} catch(e) { console.warn(e) }
		if ((ref = response.document.querySelector('h1 > span.artist')) != null) artist = ref.textContent.trim();
		album = (ref = response.document.getElementById('h1-album-title')) != null ? ref.firstChild.textContent.trim() : undefined;
		response.document.querySelectorAll('div.album-col-info-data > div > p').forEach(function(p) {
		  var key = p.firstChild.textContent, value = p.lastChild.textContent.trim();
		  if (/^(?:Album[\s\-]Release)\b/i.test(key)) albumYear = extractYear(value);
		  else if (/^(?:HRA[\s\-]Release)\b/i.test(key)) releaseDate = normalizeDate(value, 'de');
		  else if (/^(?:Label)\b/i.test(key)) label = value;
		  else if (/^(?:Genre|Subgenre)\b/i.test(key)) genres.push(value);
		  else if (/^(?:Artist)\b/i.test(key)) {
			/*artist = Array.from(p.getElementsByTagName('a')).map(a => a.textContent.trim());
			if (artist.length > 0) isVA = artist.length == 1 && vaParser.test(artist[0]); else */artist = value;
		  } else if (/^(?:Composer)\b/i.test(key)) composer = value.split(/\s*,\s*/)
			.map(composer => composer.replace(tailingBracketStripper, ''));
		});
		isVA = vaParser.test(artist);
		samplerate = undefined;
		response.document.querySelectorAll('tbody > tr > td.col-format').forEach(function(td) {
		  processFormat(/\b(FLAC)\s*(\d+(?:[\.\,]\d+)?)\b/, 24);
		  processFormat(/\b(DSD)\b/, 1);

		  function processFormat(rx, bd) {
			if (!rx.test(td.textContent)) return;
			if (format === undefined) format = RegExp.$1; else if (format != RegExp.$1) format = NaN;
			var sr = parseFloat(RegExp.$2.replace(',', '.')) * 1000;
			if (samplerate === undefined) samplerate = sr; else if (samplerate != sr) samplerate = NaN;
			if (bitdepth === undefined) bitdepth = bd; else if (bitdepth != bd) bitdepth = NaN;
		  }
		});
		getDescription(response, 'div#albumtab-info > p', false);
		if (i = hraPdfBooklet(response)) if (description) description += '\n\n' + i; else description = i;
		url = (ref = response.document.querySelector('meta[property="og:url"][content]')) != null && ref.content;
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null) imgUrl = ref.content;
		totalTracks = response.document.querySelectorAll('ul.playlist > li.pltrack').length;
		response.document.querySelectorAll('ul.playlist > li').forEach(function(li, index) {
		  if (li.classList.contains('plinfo')) {
			discSubtitle = li.textContent.trim().replace(/\s*:$/, '');
			guessDiscNumber();
		  }
		  if (li.classList.contains('pltrack')) {
			title = (ref = li.querySelector('span.title')) != null ?
				ref.textContent.trim().replace(/\s+/g, ' ') : undefined;
			if (title && discSubtitle && title.startsWith(discSubtitle))
			  title = title.slice(discSubtitle.lrngth).replace(/^\s*[\:\-\,\;]\s*/, '') || discSubtitle;
			tracks.push({
			  artist: isVA ? VA : typeof artist == 'string' ? artist : undefined,
			  artists: !isVA && Array.isArray(artist) && artist.length > 0 ? artist : undefined,
			  album: album,
			  album_year: albumYear,
			  release_date: releaseDate,
			  label: label,
			  encoding: 'lossless',
			  codec: format || undefined,
			  bitdepth: bitdepth || undefined,
			  samplerate: samplerate || undefined,
			  media: media,
			  genre: genres.join('; '),
			  disc_number: discNumber,
			  disc_subtitle: discSubtitle || undefined,
			  total_discs: totalDiscs,
			  track_number: (ref = li.querySelector('span.track')) != null ?
				  parseInt(ref.textContent) || ref.textContent.trim() : undefined,
			  total_tracks: totalTracks,
			  title: title,
			  composers: Array.isArray(composer) && composer.length > 0 ? composer : undefined,
			  duration: (ref = li.querySelector('span.time')) != null && timeStringToTime(ref.textContent) || undefined,
			  url: url || response.finalUrl,
			  description: description,
			  cover_url: imgUrl,
			  identifiers: mergeIds(),
			});
		  }
		});
		return tracks;
	  }); else if (url.hostname.endsWith('bandcamp.com')) return globalXHR(url).then(function(response) {
		artist = Array.from(response.document.querySelectorAll('div#name-section > h3 > span > a'))
		  .map(a => a.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('span.back-link-text')) != null)
		  label = ref.lastChild.textContent.trim();
		else if ((ref = response.document.querySelector('p#band-name-location > span.title')) != null)
		  label = ref.textContent.trim();
		let tags = new TagManager;
		response.document.querySelectorAll('div.tralbumData.tralbum-tags > a.tag').forEach(function(tag) {
		  if (!artist.some(artist => tag.textContent.trim().toLowerCase() == artist.toLowerCase()))
			tags.add(tag.textContent.trim());
		});
		if ((ref = response.document.querySelector('div#tralbumArt > a.popupImage')) != null) ref = ref.href;
			else if ((ref = response.document.querySelector('meta[property="og:image"]')) != null) ref = ref.conent;
		if (ref) imgUrl = ref.replace(/_\d+(?=\.\w+$)/, '_0');
		let playerData = (ref = response.document.querySelector('meta[property="og:video"][content]')) != null ?
		  globalXHR(ref.content, { responseType: 'text' }).then(function(response) {
			if (!/^\s*(var\s+playerdata\s*=\s*(\{.+\});)\s*$/m.test(response.responseText))
			  return Promise.reject('External metadata not found');
			try { return JSON.parse(RegExp.$2) } catch(e) {
			  eval(RegExp.$1);
			  return playerdata;
			}
		  }) : Promise.reject('External metadata missing');
		if (prefs.diag_mode) playerData.then(playerdata => { console.debug('BandCamp playerdata loaded:', playerdata) })
		playerData.catch(reason => { console.warn('BandCamp playerdata load failed:', reason) });
		if ((ref = response.document.head.querySelector('script[data-tralbum]')) != null) try {
		  var tralbum = JSON.parse(ref.dataset.tralbum);
		  if (typeof tralbum != 'object') throw 'invalid tralbum format';
		  if (prefs.diag_mode) console.debug('BandCamp metadata loaded:', tralbum);
		  identifiers.BANDCAMP_ID = tralbum.current.id || tralbum.id;
		  identifiers.RELEASETYPE = tralbum.current.type || tralbum.item_type;
		  if (identifiers.RELEASETYPE && identifiers.RELEASETYPE.toLowerCase() == 'album') delete identifiers.RELEASETYPE;
		  identifiers.BARCODE = tralbum.current.upc/* || tralbum.packages[0].upc*/;
		  if (tralbum.current.artist || tralbum.artist) isVA = vaParser.test(tralbum.current.artist || tralbum.artist);
		  description = tralbum.current.about;
		  if (tralbum.current.credits) if (description) description += '\n\n' + tralbum.current.credits;
			  else description = tralbum.current.credits;
		  tracks = tralbum.trackinfo.map(function(track) {
			trackIdentifiers = {
			  TRACK_ID: track.track_id,
			  //HASLYRICS: Number(track.has_lyrics) || 0,
			};
			return {
			  artist: isVA ? VA : tralbum.current.artist || tralbum.artist || joinArtists(artist),
			  album: tralbum.current.title,
			  release_date: tralbum.current.release_date || tralbum.album_release_date,
			  description: description,
			  label: label /*|| tralbum.packages[0].label*/,
			  //catalog: tralbum.packages[0].sku,
			  genre: tags.toString(),
			  duration: track.duration || undefined,
			  lyrics: track.lyrics || undefined,
			  title: track.title,
			  track_number: track.track_num,
			  total_tracks: tralbum.trackinfo.length,
			  media: 'WEB',
			  url: tralbum.url || response.finalUrl,
			  cover_url: imgUrl,
			  identifiers: mergeIds(),
			};
		  });
		  if (tracks.length <= 0) throw 'No tracks found';
		  return tracks;
		} catch(e) {
		  console.error('Bandcamp: tralbum located but failed to parse (' + e + ')', ref.dataset.tralbum, tralbum);
		  tracks = undefined;
		}
		console.log('BandCamp: falling back to HTML scraper');
		if ((ref = response.document.querySelector('div#name-section > h2.trackTitle')) != null)
		  album = ref.textContent.trim();
		ref = response.document.querySelector('div.tralbum-credits');
		if (ref != null && /\b(?:release[ds])\s+(.*?\b\d{4})\b/i.test(ref.textContent)) releaseDate = RegExp.$1;
		description = [];
		response.document.querySelectorAll('div.tralbumData.tralbum-about, div.tralbumData.tralbum-credits')
		  .forEach(div => { description.push(html2php(div, response.finalUrl).trim()) });
		description = description.filter(p => p).join('\n\n');
		if ((ref = refresponse.document.querySelector('input.email-im-link-text[type="text"]')) != null)
			var shareLink = ref.value.replace(/^(?:http)\b/i, 'https');
		trs = response.document.querySelectorAll('table#track_table > tbody > tr.track_row_view');
		return Array.from(trs).map(tr => ({
		  artist: isVA ? VA : undefined,
		  artists: !isVA ? artist : undefined,
		  album: album,
		  //album_year: extractYear(releaseDate),
		  release_date: releaseDate,
		  label: label,
		  media: media,
		  genre: tags.toString(),
		  disc_number: discNumber,
		  total_discs: totalDiscs,
		  track_number: (ref = tr.querySelector('div.track_number')) != null ?
		  	parseInt(ref.textContent) || ref.textContent.replace(/\..*$/, '') : undefined,
		  total_tracks: trs.length,
		  title: (ref = tr.querySelector('div.title span.track-title, div.title span[itemprop="name"]')) != null ?
			  ref.textContent.trim().replace(/\s+/g, ' ') : undefined,
		  duration: durationFromMeta(tr) || (ref = tr.querySelector('span.time')) != null
		  	&& timeStringToTime(ref.textContent) || undefined,
		  url: shareLink || response.finalUrl,
		  description: description,
		  identifiers: mergeIds(),
		  cover_url: imgUrl,
		}));
	  }); else if (url.hostname.endsWith('prestomusic.com')) return globalXHR(url).then(function(response) {
		identifiers.COMPOSEREMPHASIS = 1;
		if (/\/products\/(\d+)\b/i.test(url.pathname)) identifiers.PRESTOMUSIC_ID = parseInt(RegExp.$1);
		let conductors = [], performers = [], groupsAndArtists = [];
		composer = [];
		response.document.querySelectorAll('div#related > div > ul > li').forEach(li => {[
		  ['Composers', composer],
		  ['Artists', groupsAndArtists],
		  ['Groups & Artists', groupsAndArtists],
		  ['Groups', groupsAndArtists],
		  ['Ensembles', groupsAndArtists],
		  ['Conductors', conductors],
		  ['Performers', performers],
		].forEach(function(def) {
		  try {
			if (li.parentNode.previousElementSibling.textContent.trim() != def[0]) return;
			def[1].pushUniqueCaseless(li.textContent.trim()
				.replace(tailingBracketStripper, '').replace(/^(.+?),\s+(.+)$/, '$2 $1'));
		  } catch(e) { console.error(e) }
		}) });
		artist = getArtists(response.document.querySelectorAll('div.c-product-block__contributors > p'));
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('h1.c-product-block__title')) != null)
			album = ref.lastChild.wholeText.trim();
		response.document.querySelectorAll('div.c-product-block__metadata > ul > li').forEach(function(li) {
		  if (li.firstChild.textContent.includes('Release Date')) {
			releaseDate = li.lastChild.wholeText;
			if (/\b(\d+)\w*\s+(\w+)\s+(\d{4})\b/.test(releaseDate)) releaseDate = RegExp.$2 + ' ' + RegExp.$1 + ' ' + RegExp.$3;
		  } else if (li.firstChild.textContent.includes('Label'))
			label = labelSubstitutes.reduce((l, def) => l.replace(...def), li.lastChild.wholeText.trim());
		  else if (li.firstChild.textContent.includes('Catalogue No')) catalogue = li.lastChild.wholeText.trim();
		});
		genres = undefined;
		if (/\/jazz\//i.test(response.finalUrl)) genres = 'Jazz';
		if (/\/classical\//i.test(response.finalUrl)) genres = 'Classical';
		getDescription(response, 'div#about > div > p', true);
		var personnel = [];
		response.document.querySelectorAll('div.c-product-block__contributors > p').forEach(function(p) {
		  // TODO
		});
		let reviews = Array.from(response.document.querySelectorAll('div#reviews > div > div.c-product__product-review'))
		  .map(div => html2php(div, response.finalUrl).trim()).join('\n\n');
		if (reviews) description += '\n\n[hide=Reviews]' + reviews + '[/hide]';
		if (personnel.length > 0) {
		  if (description) description += '\n\n';
		  description += personnel.join('\n');
		}
		if ((ref = response.document.querySelector('div.c-product-block__aside > a')) != null)
		  imgUrl = ref.href.replace(/\?\d+$/, '');
		trackNumber = 0;
		response.document.querySelectorAll('div.c-tracklist div.c-tracklist__work').forEach(function(div) {
		  trs = div.querySelectorAll(':scope > div.c-track__details > ul > li');
		  trackArtist = getArtists(trs, false);
		  let workConductors = getArtists(trs, true);

		  function addTracks(selector) {
			Array.prototype.push.apply(tracks, Array.from(div.querySelectorAll(selector)).map(node => ({
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: album,
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: media,
			  genre: genres,
			  disc_number: discNumber,
			  disc_subtitle: discSubtitle,
			  track_number: ++trackNumber,
			  title: (ref = node.querySelector('p.c-track__title')) != null ?
			  	ref.textContent.trim().replace(/\s+/g, ' ') : undefined,
			  track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
			  	trackArtist : undefined,
			  composers: composer.length > 0 ? composer : undefined,
			  conductors: workConductors.length > 0 ? workConductors : undefined,
			  performers: performers,
			  duration: (ref = node.querySelector('div.c-track__duration')) != null ?
			  	timeStringToTime(ref.textContent) : undefined,
			  description: description.collapseGaps(),
			  url: response.finalUrl,
			  cover_url: imgUrl,
			  identifiers: mergeIds(),
			})));
		  }

		  if (/*!div.classList.contains('has--tracks')*/div.querySelector('div.c-tracklist__initial-tracks') == null) {
			discNumber = discSubtitle = undefined;
			addTracks('div.c-track');
		  } else {
			if ((ref = div.querySelector('div.c-track p.c-track__title')) != null) {
			  discSubtitle = ref.textContent.trim().replace(/\s+/g, ' ');
			  guessDiscNumber();
			} else {
			  discNumber = discSubtitle = undefined;
			  console.warn('Presto Music work title missing:', div);
			}
			addTracks('div.c-tracklist__initial-tracks > div.c-track, div.c-tracklist__remaining-tracks > div.c-track');
		  }
		});
		return finalizeTracks();

		function getArtists(nodeList, _conductors = false) {
		  var artists = [];
		  nodeList.forEach(function(_artists) {
			_artists = _artists.textContent.trim();
			if (_artists.startsWith('Record')) return;
			Array.prototype.push.apply(artists, splitAmpersands(_artists.replace(bracketStripper, '').replace(/;\s*/g, ''))
				.filter(artist => artist.length > 0 && !/^[a-z]/.test(artist)));
		  });
		  return artists.filter(artist => artist.length > 0 && conductors.includesCaseless(artist) == _conductors);
		}
	  }); else if (url.hostname.endsWith('discogs.com') && /\/(release|master|artist)s?\/(\d+)\b/i.test(url.pathname)) {
		if (RegExp.$1 == 'artist') return Promise.reject('Discogs artists not parseable');
		if (RegExp.$1 == 'master') return Promise.reject('Discogs masters as source aren\'t supported, pick a specific release');
		return queryDiscogsAPI('releases/' + RegExp.$2).then(function(release) {
		  if (prefs.diag_mode) console.debug('Discogs release', release.id, 'metadata received:', release);
		  const removeArtistNdx = /\s*\(\d+\)$/;
		  const editionTests = [
			/^(?:Remaster(?:ed)|Remasterizado|Remasterisée|Enhanced|Extended)\b/i,
			/^(?:Reissue|Repress|Promo|(?:Partially\s)?Mixed|Numbered|Misprint|Mispress|\w+\sPressing|Advance|Single\s(?:Sided)|Etched|Card\sBacked)$/i,
			/\b(?:Unofficial)\b/i,
			/\b(?:Edition|Release)$/i,
		  ];
		  identifiers.DISCOGS_ID = release.id;
		  var master = release.master_id ? queryDiscogsAPI('masters/' + release.master_id).then(function(master) {
			if (prefs.diag_mode) console.debug('Discogs master', master.id, 'metadata received:', master);
			return master;
		  }) : Promise.resolve(null);
		  artist = getArtists(release);
		  isVA = artist[0].length <= 0 || vaParser.test(artist[0][0])
		  label = []; catalogue = [];
		  release.labels.forEach(function(lbl) {
			if (lbl.entity_type != 1) return;
			if (lbl.name) label.pushUniqueCaseless(lbl.name.replace(removeArtistNdx, ''));
			if (lbl.catno && !/^(?:none)$/.test(lbl.catno)) catalogue.pushUniqueCaseless(lbl.catno);
		  });
		  description = '';
		  if (Array.isArray(release.companies) && release.companies.length > 0) {
			description = '[b]Companies, etc.[/b]\n';
			let type_names = new Set(release.companies.map(it => it.entity_type_name));
			type_names.forEach(function(type_name) {
			  description += '\n' + type_name + ' – ' + release.companies
				.filter(it => it.entity_type_name == type_name)
				.map(function(it) {
				  var result = '[url=' + discogsOrigin + '/label/' + it.id + ']' +
					  it.name.replace(removeArtistNdx, '') + '[/url]';
				  if (it.catno) result += ' – ' + it.catno;
				  return result;
				})
				.join(', ');
			});
		  }
		  if (Array.isArray(release.extraartists) && release.extraartists.length > 0) {
			if (description) description += '\n\n';
			description += '[b]Credits[/b]\n';
			let roles = new Set(release.extraartists.map(it => it.role));
			roles.forEach(function(role) {
			  description += '\n' + role + ' – ' + release.extraartists
				.filter(artist => artist.role == role)
				.map(function(artist) {
				  var result = '[url=' + discogsOrigin + '/artist/' + artist.id + ']' +
					  (artist.anv || artist.name).replace(removeArtistNdx, '') + '[/url]';
				  if (artist.tracks) result += ' (tracks: ' + artist.tracks + ')';
				  return result;
				}).join(', ');
			});
		  }
		  if ('notes' in release && release.notes.trim()) {
			if (description) description += '\n\n';
			description += '[b]Notes[/b]\n\n' + release.notes.trim();
		  }
		  if (Array.isArray(release.identifiers) && release.identifiers.length > 0) {
			if (description) description += '\n\n';
			description += '[b]Barcode and Other Identifiers[/b]\n';
			release.identifiers.forEach(function(it) {
			  description += '\n' + it.type;
			  if (it.description) description += ' (' + it.description + ')';
			  description += ': ' + it.value;
			});
		  }
		  [
			['Single', 'Single', 'Maxi-Single', 'Maxi'],
			['EP', 'EP'],
			['Album', 'Album', 'LP', 'MiniAlbum'],
			//['Anthology', 'Compilation', 'Box Set'],
			['Compilation', 'Sampler'],
			['Mixtape', 'Mixtape'],
		  ].forEach(function(k) {
			if (release.formats.every(format => format.name == 'All Media' || Array.isArray(format.descriptions)
				&& k.slice(1).some(k => format.descriptions.includesCaseless(k)))) identifiers.RELEASETYPE = k[0];
		  });
		  var channelModes = [];
		  [
			['mono', 'Mono'],
			['stereo', 'Stereo'],
			['Quadraphonic', '4.0'],
		  ].forEach(function(k) {
			release.formats.forEach(function(format) {
			  if (!Array.isArray(format.descriptions)) return;
			  if (k.slice(1).some(k => format.descriptions.includesCaseless(k))) channelModes.pushUnique(k[0]);
			});
		  });
		  release.identifiers.forEach(function(id) {
			identifiers[id.type.toUpperCase().replace(/\s*\/\s*/g, '-').replace(/\W/g, '_')] = id.value;
		  });
		  var editionDescriptors = [];
		  media = new Set();
		  release.formats.forEach(function(format) {
			if (editionTests.some(rx => rx.test(format.text))) editionDescriptors.push(format.text);
			if (Array.isArray(format.descriptions)) format.descriptions.forEach(function(descriptions) {
			  if (editionTests.some(rx => rx.test(descriptions))) editionDescriptors.push(descriptions);
			});
			if (format.name == 'All Media') return;
			var _media = estimateMedia(format.name);
			if (_media) media.add(_media);
			if (!/\b(?:File)\b/.test(format.name)) return;
			if (['FLAC', 'WAV', 'AIF', 'AIFF', 'AIFC', 'PCM', 'ALAC', 'APE', 'WavPack', 'DFF', 'DSD']
				.some(k => format.descriptions.includes(k))) {
			  encoding = 'lossless'; format = 'FLAC';
			} else if (format.descriptions.includes('MP3')) {
			  encoding = 'lossy'; format = 'MP3'; bitdepth = undefined;
			  if (/\b(\d+)\s*kbps\b/i.test(format.text)) bitrate = parseInt(RegExp.$1);
			} else if (format.descriptions.includes('AAC')) {
			  encoding = 'lossy'; format = 'AAC'; bitdepth = undefined;
			  if (/(\d+)\s*kbps\b/i.test(format.text)) bitrate = parseInt(RegExp.$1);
			} else if (['AMR', 'MP2', 'ogg-vorbis', 'Opus', 'SHN', 'WMA'].some(k => formatformat.descriptions.includes(k)))
			  encoding = 'lossy';
		  });
		  function trackCounter(root) {
			return Array.isArray(root) ? root.reduce(function(acc, track) {
			  switch (track.type_) {
				case 'track': var count = Number(track.position != 'Video'); break;
				case 'index': count = trackCounter(track.sub_tracks); break;
			  }
			  return acc + (count || 0);
			}, 0) : 0;
		  }
		  totalTracks = trackCounter(release.tracklist);
		  return master.catch(function(reason) {
			console.debug('Discogs master not received:', reason);
			if (prefs.messages_verbosity >= 1) addMessage(reason, 'notice');
			return null;
		  }).then(function(master) {
			let tags = new TagManager();
			if (Array.isArray(release.genres)) tags.add(...release.genres);
			if (Array.isArray(release.styles)) tags.add(...release.styles);
			if (master) {
			  if (Array.isArray(master.genres)) tags.add(...master.genres);
			  if (Array.isArray(master.styles)) tags.add(...master.styles);
			}
			imgUrl = (master && master.images || []).concat(release.images || []).filter(function(image) {
			  return urlParser.test(image.resource_url || image.uri) && ['primary', 'front'].includes(image.type);
			});
			imgUrl = imgUrl.length > 0 ? imgUrl[0].resource_url || imgUrl[0].uri : undefined;
			if (imgUrl && /^(?:https?):\/\/(?:img\.discogs\.com)\/.+\/(\S+?\.\w+)\b/i.test(imgUrl))
			  imgUrl = 'https://www.discogs.com/image/' + RegExp.$1;
			let trackCounter = 0, discCounter = 0, _media;
			release.tracklist.forEach(function(track) {
			  switch (track.type_.toLowerCase()) {
				case 'heading':
				  discSubtitle = track.title;
				  break;
				case 'track':
				  if (track.position != 'Video') addTrack(track);
				  break;
				case 'index':
				  if (track.sub_tracks.every(subTrack => /^\s*[CDILMVX]+(?:[\:\.]| -)?\s+/.test(subTrack.title))
					  || track.sub_tracks.every(subTrack => /^\s*\d+(?:[\:\.]| -)?\s+/.test(subTrack.title)))
					track.sub_tracks.forEach(function(subTrack) {
					  subTrack.title = subTrack.title.replace(/^\s*[CDILMVX\d]+(?:[\:\.]| -)?\s+/, '');
					});
				  track.sub_tracks.filter(subTrack => subTrack.type_ == 'track' && subTrack.position != 'Video').map(function(subTrack, index) {
					if (subTrack.position) var position = subTrack.position;
					subTrack.title = (/*position || */convertToRoman(index + 1)).toString() + '. ' + subTrack.title.trim();
					if (track.title) subTrack.title = track.title + ': ' + subTrack.title;
					subTrack = Object.assign({}, track, subTrack);
					//delete subTrack.position;
					delete subTrack.sub_tracks;
					return subTrack;
				  }).forEach(addTrack);
				  break;
			  }
			});
			return tracks;

			function addTrack(track) {
			  if (track.type_ != 'track' || track.position == 'Video') return;
			  trackIdentifiers = {};
			  ++trackCounter;
			  if ((matches = /^(([A-Z]+)?(\d+)?)[\-\.](\S+)$/.exec(track.position)) != null && matches[1]) {
				if (_media === undefined || matches[1] !== _media) ++discCounter;
				if (matches[2]) trackIdentifiers.VOL_MEDIA = matches[2] + (matches[3] || discCounter).toString();
				if (matches[3]) discNumber = matches[3];
				trackNumber = matches[4];
				_media = matches[1];
			  } else {
				if (_media === undefined || _media !== '') ++discCounter;
				trackNumber = track.position || trackCounter;
				_media = '';
			  }
			  let trackArtists = getArtists(track);
			  trackArtist = isVA || !artistsMatch(trackArtists, artist);
			  let trackPerformers = trackArtists[0].concat(trackArtists[1]);
			  if (Array.isArray(track.extraartists)) trackPerformers.pushUniqueCaseless(...track.extraartists
					.map(performer => (performer.anv || performer.name).replace(removeArtistNdx, '')));
			  tracks.push({
				artist: isVA ? VA : undefined,
				artists: !isVA ? artist[0] : undefined,
				featured_artists: !isVA && artist[1].length > 0 ? artist[1] : undefined,
				album: release.title,
				album_year: master ? master.year : undefined,
				release_date: release.released,
				label: label.join(' / ') || undefined,
				catalog: catalogue.join(' / ') || undefined,
				country: release.country,
				encoding: media.size == 1 ? encoding : undefined,
				codec: media.size == 1 ? format : undefined,
				bitrate: media.size == 1 ? bitrate : undefined,
				bitdepth: media.size == 1 ? bitdepth : undefined,
				channel_mode: channelModes.length == 1 ? channelModes[0] : undefined,
				media: media.size == 1 ? media.keys().next().value : undefined,
				genre: tags.toString(),
				disc_number: discCounter, //discNumber,
				total_discs: Math.max(release.format_quantity, 1),
				disc_subtitle: discSubtitle,
				edition_title: editionDescriptors.join(' / ') || undefined,
				series: release.series || undefined,
				track_number: trackNumber,
				total_tracks: totalTracks,
				title: track.title.trim(),
				track_artists: trackArtist ? trackArtists[0] : undefined,
				track_guests: trackArtist ? trackArtists[1] : undefined,
				composers: role(3, true),
				conductors: role(4, true),
				compilers: role(5, true),
				remixers: role(2),
				producers: role(6, true),
				mixers: role(7),
				performers: role(8, true), //trackPerformers,
				duration: timeStringToTime(track.duration) || undefined,
				description: description,
				identifiers: mergeIds(),
				//url: release.uri,
				cover_url: imgUrl,
			  });

			  function role(index, defaultToAlbumArtist = false) {
				return trackArtists[index].length > 0 ? trackArtists[index]
					: defaultToAlbumArtist && artist[index].length > 0 ? artist[index] : undefined;
			  }
			}
		  });

		  function getArtists(root, anv = false) {
			if (!root || typeof root != 'object') throw 'getArtists: invalid root';
			let artists = [];
			for (var index = 0; index < 10; ++index) artists[index] = [];
			index = 0;
			if (Array.isArray(root.artists)) root.artists.forEach(function(artist) {
			  artists[/^(?:conduct(?:s|ing))$/i.test(artist.join) ? 4 : index]
				.push((anv && artist.anv || artist.name).replace(index, ''));
			  if (/^(?:feat(?:uring)?|ft|with)\b/i.test(artist.join)) index = 1;
			});
			if (Array.isArray(root.extraartists)) [
			  /* 1 */ [/^(?:Feat(?:uring)?|Ft|F\.\/|With)\b/i, anv],
			  /* 2 */ [/^(?:Remix(?:ed[\s\-]By|er)?)\b/i, anv],
			  /* 3 */ [/^(?:(?:Written|Composed|Libretto|Music)[\s\-]By|Composer|(?:Composer)?Lyricist|Writer|Author)\b/i, false],
			  /* 4 */ [/^(?:Conducted[\s\-]By|Conductor|(?:Chorus\s|Choir)Master)\b/i, anv],
			  /* 5 */ [/^(?:Compiled[\s\-]By|Compiler)\b/i, anv],
			  /* 6 */ [/^(?:Produced[\s\-]By|Producer)\b/i, anv],
			  /* 7 */ [/^(?:(?:Mixed)[\s\-]By|Mixer)\b/i, anv],
			  /* 8 */ [/^(?:Ensemble|Orchestra|Choir|Performer|Musician|(?:Backing\s)?Vocals|Solo\sVocal|Voice|(?:\w+\s)?Guitar|(?:\w+\s)?Bass|Piano|Drums|Percussion|Timpani|Shaker|Synthesizer|Synth|Keyboards|(?:\w+\s)?Saxophone|Trumpet|Banjo|Harmonica|Accordion|Harmonium|Organ|Violin|Viola|Cello|Clarinet|Trombone|Glockenspiel|Vibraphone|Fiddle|Cornet\Star|Tambourine|Loops|Mellotron|Tabla|Saw|Congas|Bongos|Flute|Harp|Tambura|Flute|Sarangi|Cabasa|Handclaps|Kalimba|Vocoder|Sounds|Whistling|Other)\b/i, anv],
			  /* 9 */ [/^(?:(?:Written|Composed)[\s\-]By|Composer|Lyricist|Writer)\b/i, true],
			].forEach(function(def, index) {
			  artists[index + 1].pushUniqueCaseless(...root.extraartists
				.filter(extraArtist => extraArtist.role.split(/,\s+/).some(role => def[0].test(role)))
				.map(extraArtist => (def[1] && extraArtist.anv || extraArtist.name || '').replace(removeArtistNdx, '')));
			});
			if (artists[0].length <= 0 && artists[1].length > 0) artists[0] = artist[0];
			return artists;
		  }
		});
	  } else if (url.hostname.endsWith('supraphonline.cz')) {
		url.search = '';
		return globalXHR(url).then(function(response) {
		  if (/\/album\/(\d+)\b/i.test(response.finalUrl)) identifiers.SUPRAPHONLINE_ID = parseInt(RegExp.$1);
		  artist = Array.from(response.document.querySelectorAll('div.visible-lg-block > h2.album-artist > a'))
			.map(a => a.title || a.textContent.trim());
		  isVA = (ref = response.document.querySelector('span[itemprop="byArtist"] > meta[itemprop="name"]')) != null ?
			vaParser.test(ref.content) : artist.length <= 0;
		  if ((ref = response.document.querySelector('h1[itemprop="name"]')) != null) album = ref.firstChild.data.trim();
		  if ((ref = response.document.querySelector('meta[itemprop="numTracks"]')) != null)
			totalTracks = parseInt(ref.content);
		  genres = (ref = response.document.querySelector('meta[itemprop="genre"]')) != null ? ref.content : undefined;
		  if ((ref = response.document.querySelector('li.album-version > div.selected > div')) != null) {
			if (/\b(?:MP3)\b/.test(ref.textContent)) {
			  media = 'WEB'; encoding = 'lossy'; format = 'MP3';
			}
			if (/\b(?:FLAC)\b/.test(ref.textContent)) {
			  media = 'WEB'; encoding = 'lossless'; format = 'FLAC'; bitdepth = 16;
			}
			if (/\b(?:Hi[\s\-]*Res)\b/.test(ref.textContent)) {
			  media = 'WEB'; encoding = 'lossless'; format = 'FLAC'; bitdepth = 24;
			}
			if (/\b(?:CD)\b/.test(ref.textContent)) media = 'CD';
			if (/\b(?:LP)\b/.test(ref.textContent)) media = 'Vinyl';
		  }
		  const copyrightParser = /^(?:\([PC]\)|℗|©)$/i;
		  response.document.querySelectorAll('ul.summary > li').forEach(function(li) {
			if (li.childElementCount <= 0) return;
			let key = li.firstElementChild.textContent, value = li.lastChild.textContent.trim();
			if (key.includes('Nosič')) media = value;
			if (key.includes('Datum vydání')) releaseDate = normalizeDate(value, 'cs');
			if (key.includes('První vydání')) albumYear = extractYear(value);
			if (key.includes('Žánr')) genres = translateGenre(value);
			if (key.includes('Vydavatel')) label = value;
			if (key.includes('Katalogové číslo')) catalogue = value;
			if (key.includes('Formát')) {
			  if (/\b(?:FLAC|WAV|AIFF?)\b/.test(value)) { encoding = 'lossless'; format = 'FLAC' }
			  if (/\b(\d+)[\-\s]?bits?\b/i.test(value)) bitdepth = parseInt(RegExp.$1);
			  if (/\b([\d\.\,]+)[\-\s]?kHz\b/.test(value)) samplerate = parseFloat(RegExp.$1.replace(',', '.')) * 1000;
			}
			//if (key.includes('Celková stopáž')) totalTime = timeStringToTime(value);
			if (copyrightParser.test(key) && !albumYear) albumYear = extractYear(value);
		  });
		  const creators = ['autoři', 'interpreti', 'tělesa', 'digitalizace'];
		  let artists = [], ndx;
		  for (let i = 0; i < creators.length; ++i) artists[i] = {};
		  response.document.querySelectorAll('ul.sidebar-artist > li').forEach(function(it) {
			if ((ref = it.querySelector('h3')) != null) {
			  ndx = undefined;
			  creators.forEach((it, _ndx) => { if (ref.textContent.includes(it)) ndx = _ndx });
			} else {
			  if (typeof ndx != 'number') return;
			  if (ndx == 2) var role = 'ensemble';
				else if ((ref = it.querySelector('span')) != null) role = translateRole(ref);
			  if ((ref = it.querySelector('a')) != null) {
				if (!Array.isArray(artists[ndx][role])) artists[ndx][role] = [];
				artists[ndx][role].pushUnique([ref.textContent.trim(), url.origin + ref.pathname]);
			  }
			}
		  });
		  getDescription(response, 'div[itemprop="description"] p', true);
		  composer = [];
		  let performers = [], conductor = [], DJs = [], albumGuests = [], volMedia;
		  function dumpArtist(ndx, role) {
			if (!role || role == 'undefined') return;
			if (description.length > 0) description += '\n' ;
			description += '[color=#9576b1]' + role + '[/color] – ';
			//description += artists[ndx][role].map(artist => '[artist]' + artist[0] + '[/artist]').join(', ');
			description += artists[ndx][role].map(artist => '[url=' + artist[1] + ']' + artist[0] + '[/url]').join(', ');
		  }
		  for (let i = 1; i < 3; ++i) Object.keys(artists[i]).forEach(function(role) { // performers
			var a = artists[i][role].map(a => a[0]);
			([
			  'conductor', 'choirmaster', 'director',
			].includes(role) ? conductor : role == 'DJ' ? DJs : [
			  'FeaturedArtist',
			].includes(role) ? albumGuests : artist).pushUnique(...a);
			if (i != 2) dumpArtist(i, role);
		  });
		  Object.keys(artists[0]).forEach(function(role) { // composers
			composer.pushUnique(...artists[0][role].map(it => it[0]).filter(it => ![
			  pseudoArtistParsers[0],
			  pseudoArtistParsers[1],
			  pseudoArtistParsers[4],
			].some(rx => rx.test(it))));
			dumpArtist(0, role);
		  });
		  Object.keys(artists[3]).forEach(role => { dumpArtist(3, role) }); // ADC & mastering
		  if ((ref = response.document.querySelector('meta[itemprop="image"]')) != null)
			imgUrl = ref.content.replace(/\?.*$/, '');
		  response.document.querySelectorAll('table.table-tracklist > tbody > tr').forEach(function(tr, index) {
			if (tr.classList.contains('cd-header') && (ref = tr.querySelector('td > h3')) != null
			  	&& /\b(?:(\S*?)\s*)?(\d+)\b/.test(ref.textContent)) {
			  volMedia = RegExp.$1 ? RegExp.lastMatch : undefined;
			  discNumber = parseInt(RegExp.$2) || undefined;
			}
			if (tr.classList.contains('song-header') && (ref = tr.querySelector('td')) != null)
			  discSubtitle = ref.title || ref.textContent.trim();
			if (tr.classList.contains('track') && tr.id) {
			  trackIdentifiers = {
				TRACK_ID: /^(?:track)-(\d+)$/i.test(tr.id) ? parseInt(RegExp.$1) : undefined,
			  };
			  if (volMedia) trackIdentifiers.VOL_MEDIA = volMedia;
			  let track = {
				artist: isVA ? VA : undefined,
				artists: !isVA && artist.length > 0 ? artist : undefined,
				//featured_artists: albumGuests.length > 0 ? albumGuests : undefined,
				album: album,
				album_year: /*trackYear || */albumYear || undefined,
				release_date: releaseDate,
				label: label,
				catalog: catalogue,
				encoding: encoding,
				codec: format,
				bitdepth: bitdepth,
				samplerate: samplerate || undefined,
				media: media,
				genre: genres,
				disc_number: discNumber,
				total_discs: totalDiscs,
				disc_subtitle: discSubtitle,
				track_number: /^\s*(\d+)\.?\s*$/.test(tr.children[0].firstChild.textContent) ?
					parseInt(RegExp.$1) || RegExp.$1 : undefined,
				total_tracks: totalTracks,
				title: (ref = tr.querySelector('meta[itemprop="name"][content]')) != null ? ref.content
					: (ref = tr.querySelector('td > a.trackdetail')) != null ? ref.textContent.trim() : undefined,
				performers: performers.length > 0 ? performers : undefined,
				composers: composer.length > 0 ? composer : undefined,
				conductors: conductor.length > 0 ? conductor : undefined,
				compilers: DJs.length > 0 ? DJs : undefined,
				duration: durationFromMeta(tr),
				url: response.finalUrl,
				description: description,
				identifiers: mergeIds(),
				cover_url: imgUrl,
			  };
			  tracks.push((function() {
				if ((ref = tr.querySelector('td > a.trackdetail')) == null) return Promise.reject('link not found');
				return globalXHR(url.origin + ref.pathname + ref.search).then(function(response) {
				  var detail = response.document.querySelector('div[data-swap="trackdetail-' +
					track.identifiers.TRACK_ID + '"] > div > div.row');
				  if (detail == null) return Promise.reject('element not found');
				  detail.querySelectorAll('div[class]:nth-of-type(1) > ul > li').forEach(function(li) {
					var key = li.querySelector('span'), value = li.lastChild;
					if (key == null || value.nodeType != Node.TEXT_NODE) return;
					key = key.textContent.trim(); value = value.wholeText.trim();
					if (!key || !value) return;
					if (key.startsWith('Žánr')) track.genre = value;
					if (key.startsWith('Nahrávka dokončena')) track.rec_year = extractYear(value);
					if (key.startsWith('Místo nahrání')) track.venue = value;
					if (key.startsWith('Rok prvního vydání')) track.pub_year = extractYear(value);
					if (copyrightParser.test(key)) track.copyright = value;
				  });
				  let trackArtists = [];
				  for (let i = 0; i < 8; ++i) trackArtists[i] = [];
				  detail.querySelectorAll('div[class]:nth-of-type(2) > ul > li').forEach(function(li) {
					let role = li.querySelector('span');
					let artists = Array.from(li.getElementsByTagName('a')).map(a => a.textContent.trim()).filter(artist => ![
					  pseudoArtistParsers[0],
					  pseudoArtistParsers[1],
					  pseudoArtistParsers[4],
					].some(rx => rx.test(artist)));
					if (role != null && artists.length > 0) role = translateRole(role); else return;
					if (artistClassParsers[2].some(rx => rx.test(role)))
					  trackArtists[2].pushUnique(...artists);
					else if (artistClassParsers[3].some(rx => rx.test(role)))
					  trackArtists[3].pushUnique(...artists);
					else if (artistClassParsers[5].some(rx => rx.test(role)))
					  trackArtists[5].pushUnique(...artists);
					else if (artistClassParsers[6].some(rx => rx.test(role)))
					  trackArtists[6].pushUnique(...artists);
					else if (role.toLowerCase() == 'performer' || !artistClassParsers[8].some(rx => rx.test(role))) {
					  if (artistClassParsers[0].some(rx => rx.test(role)))
						trackArtists[0].pushUnique(...artists);
					  else if (artistClassParsers[1].some(rx => rx.test(role)))
						trackArtists[1].pushUnique(...artists);
					  else if (artistClassParsers[4].some(rx => rx.test(role)))
						trackArtists[4].pushUnique(...artists);
					  else artists.forEach(_artist => {
						if (artist.includesCaseless(_artist)) trackArtists[0].pushUnique(_artist);
						  else if (artistClassParsers[7].some(rx => rx.test(role))) trackArtists[1].pushUnique(_artist);
					  });
					  trackArtists[7].pushUnique(...artists.map(artist => artist + ' (' + role + ')'));
					}
				  });
				  if (trackArtists[1].length > 0 && trackArtists[0].length <= 0) {
					trackArtists[0] = trackArtists[1]; trackArtists[1] = [];
				  }
				  if (trackArtists[0].length > 0 && (isVA || !trackArtists[0].equalCaselessTo(artist)
						|| trackArtists[1].length > 0/*!trackArtists[1].equalCaselessTo(albumGuests)*/)) {
					track.track_artists = trackArtists[0];
					if (trackArtists[1].length > 0) track.track_guests = trackArtists[1];
				  }
				  [
					[3, 'composer'],
					[4, 'conductor'],
					[2, 'remixer'],
					[5, 'compiler'],
					//[6, 'producer'],
					[7, 'performer'],
				  ].forEach(def => { if (trackArtists[def[0]].length > 0) track[def[1] + 's'] = trackArtists[def[0]] })
				  return track;
				});
			  })().catch(function(reason) {
				console.error('Supraphonline parser failed to get track', index + 1, 'detail:', reason);
				return Promise.resolve(track);
			  }));
			} // track
		  });
		  return Promise.all(tracks);

		  function translateGenre(genre) {
			if (!genre || typeof genre != 'string') return undefined;
			[
			  ['Orchestrální hudba', 'Orchestral Music'],
			  ['Komorní hudba', 'Chamber Music'],
			  ['Vokální', 'Classical, Vocal'],
			  ['Klasická hudba', 'Classical'],
			  ['Melodram', 'Classical, Melodram'],
			  ['Symfonie', 'Symphony'],
			  ['Vánoční hudba', 'Christmas Music'],
			  [/^(?:Alternativ(?:ní|a))$/i, 'Alternative'],
			  ['Dechová hudba', 'Brass Music'],
			  ['Elektronika', 'Electronic'],
			  ['Folklor', 'Folclore, World Music'],
			  ['Instrumentální hudba', 'Instrumental'],
			  ['Latinské rytmy', 'Latin'],
			  ['Meditační hudba', 'Meditative'],
			  ['Vojenská hudba', 'Military Music'],
			  ['Pro děti', 'Children'],
			  ['Pro dospělé', 'Adult'],
			  ['Mluvené slovo', 'Spoken Word'],
			  ['Audiokniha', 'audiobook'],
			  ['Humor', 'humour'],
			  ['Pohádka', 'Fairy-Tale'],
			].forEach(function(subst) {
			  if (typeof subst[0] == 'string' && genre.toLowerCase() == subst[0].toLowerCase()
				 || subst[0] instanceof RegExp && subst[0].test(genre)) genre = subst[1];
			});
			return genre;
		  }
		  function translateRole(elem) {
			return elem instanceof HTMLElement ? [
			  [/\b(?:klavír)\b/ig, 'piano'],
			  [/\b(?:housle)\b/ig, 'violin'],
			  [/\b(?:violoncello)\b/ig, 'cello'],
			  [/\b(?:viola)\b/ig, 'alto'],
			  [/\b(?:varhany)\b/ig, 'organ'],
			  [/\b(?:cembalo)\b/ig, 'harpsichord'],
			  [/\b(?:trubka)\b/ig, 'trumpet'],
			  [/\b(?:soprán)\b/ig, 'soprano'],
			  [/\b(?:alt)\b/ig, 'alto'],
			  [/\b(?:baryton)\b/ig, 'baritone'],
			  [/\b(?:bas)\b/ig, 'basso'],
			  [/\b(?:akordeon)\b/ig, 'accordion'],
			  [/\b(?:syntezátor)\b/ig, 'synthesizer'],
			  [/\b(?:klávesové nástroje)\b/ig, 'keyboards'],
			  [/\b(?:bicí)\b/ig, 'drums'],
			  [/\b(?:kontrabas)\b/ig, 'double-bass'],
			  [/\b(?:zpěv|vokál)\b/ig, 'vocals'],
			  [/\b(?:baskytara)\b/ig, 'bass guitar'],
			  [/\b(?:havajská kytara)\b/ig, 'steel guitar'],
			  [/\b(?:akustická kytara)\b/ig, 'acoustic guitar'],
			  [/\b(?:kytara)\b/ig, 'guitar'],
			  [/\b(?:kytary)\b/ig, 'guitars'],
			  [/(?:čte|četba)\b/ig, 'narration'],
			  [/\b(?:vypravuje)\b/ig, 'narration'],
			  [/\b(?:hudební těleso)\b/ig, 'ensemble'],
			  [/\b(?:Umělec)\b/ig, 'Artist'],
			  [/\b(?:improvizace)\b/ig, 'improvisation'],
			  ['český', 'czech'],
			  ['původní', 'original'],
			  [/\b(?:text)\b/ig, 'lyrics'],
			  [/\b(?:hudba)\b/ig, 'music'],
			  ['hudební', 'music'],
			  [/\b(?:autor)\b/ig, 'author'],
			  [/\b(?:překlad)\b/ig, 'translation'],
			  ['účinkuje', 'participating'],
			  ['hovoří a zpívá', 'speaks and sings'],
			  ['hovoří', 'spoken by'],
			  ['komentář', 'commentary'],
			  [/\b(?:dirigent)\b/ig, 'conductor'],
			  ['řídí', 'director'],
			  [/\b(?:sbormistr)\b/ig, 'choirmaster'],
			  ['programování', 'programming'],
			  [/\b(?:produkce)\b/ig, 'produced by'],
			  ['nahrál', 'recorded by'],
			  [/\b(?:digitální přepis)\b/ig, 'A/D transfer'],
			].reduce((r, def) => r.replace(...def), elem.textContent.trim().replace(/\s*:.*$/, '')) : undefined;
		  }
		});
	  } else if (url.hostname.endsWith('bontonland.cz')) return globalXHR(url).then(function(response) {
		ref = response.document.querySelector('div#detailheader > h1');
		if (ref != null && /^(.*?)\s*:\s*(.*)$/.test(ref.textContent.trim())) {
		  artist = RegExp.$1;
		  isVA = vaParser.test(artist);
		  album = RegExp.$2;
		}
		media = 'CD';
		response.document.querySelectorAll('table > tbody > tr > td.nazevparametru').forEach(function(it) {
		  if (it.textContent.includes('Datum vydání')) {
			releaseDate = normalizeDate(it.nextElementSibling.textContent, 'cs');
			albumYear = extractYear(it.nextElementSibling.textContent);
		  } else if (it.textContent.includes('Nosič / počet')) {
			if (/^(.*?)\s*\/\s*(.*)$/.test(it.nextElementSibling.textContent)) {
			  media = RegExp.$1;
			  totalDiscs = RegExp.$2;
			}
		  } else if (it.textContent.includes('Interpret')) artist = it.nextElementSibling.textContent.trim();
		  else if (it.textContent.includes('EAN')) identifiers.BARCODE = it.nextElementSibling.textContent.trim();
		});
		getDescription(response, 'div#detailtabpopis > div[class^="pravy"] > div > p:not(:last-of-type)', true);
		if (description.startsWith('[quote]Tracklist:')) description = undefined;
		if ((ref = response.document.querySelector('a.detailzoom')) != null) imgUrl = ref.href;
		if ((ref = response.document.querySelector('img#lbImage')) != null) imgUrl = ref.src;
		if ((ref = response.document.querySelector('div#detailtabpopis > div[class^="pravy"] > div > ol')) != null) {
		  return Array.from(ref.querySelectorAll('li')).map(function(track, ndx, arr) {
			title = track.innerText.trim();
			duration = undefined;
			if (/^(.*?)\s+\(((?:\d+:)?\d+:\d+)\)$/.test(title) || /^(.*?)\s+\(((?:\d+:)?\d+:\d+)\)$/.test(title)) {
			  title = RegExp.$1;
			  duration = timeStringToTime(RegExp.$2);
			}
			return {
			  artist: isVA ? VA : artist,
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  media: media,
			  track_number: ndx + 1,
			  total_tracks: arr.length,
			  title: title,
			  duration: duration,
			  url: response.finalUrl.replace(/\?.*$/, ''),
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  });
		} else if ((ref = response.document.querySelector('div#detailtabpopis > div[class^="pravy"] > div > p:last-of-type')) != null) {
		  var trackList = ref.textContent.trim().split(/(?:\r?\n)+/).map(tr => tr.trim());
		  trackNumber = 0;
		  trackList.forEach(function(track) {
			if (!/^(?:(\d+)(?:\s*[\/\.\-\:\)])?\s+)?(.+?)(?:\s+((?:\d+:)?\d+:\d+))?$/.test(track)) return;
			++trackNumber;
			tracks.push({
			  artist: isVA ? VA : artist,
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  media: media,
			  track_number: parseInt(RegExp.$1) || RegExp.$1 || trackNumber,
			  total_tracks: trackList.length,
			  title: RegExp.$2,
			  duration: timeStringToTime(RegExp.$3) || undefined,
			  url: response.finalUrl.replace(/\?.*$/, ''),
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			});
		  });
		  return tracks;
		} else throw 'Playlist could not be located';
	  }); else if (url.hostname.endsWith('nativedsd.com')) {
		if (!url.pathname.startsWith('/catalogue/albums/')) return Promise.reject('this page can\'t be extracted');
		return globalXHR(url).then(function(response) {
		  identifiers.COMPOSEREMPHASIS = 1;
		  identifiers.ORIGINALFORMAT = 'DSD';
		  if ((ref = response.document.querySelector('div.product-intro-text > h3')) != null)
			artist = ref.textContent.trim();
		  isVA = !artist || vaParser.test(artist);
		  if ((ref = response.document.querySelector('div.product-intro-text > h1')) != null)
			album = ref.textContent.trim();
		  let conductors, attributes = { };
		  response.document.querySelectorAll('table.shop_attributes > tbody > tr').forEach(function(tr) {
			var key = tr.querySelector('th'), content = tr.querySelector('td > p');
			if (key == null || content == null) return;
			key = key.textContent.trim();
			switch (key.toLowerCase()) {
			  case 'label':
				label = content.textContent.trim();
				break;
			  case 'sku':
				catalogue = content.textContent.trim();
				break;
			  case 'artists':
				artist = Array.from(content.getElementsByTagName('a')).map(a => a.textContent.trim());
				isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
				break;
			  case 'composers':
				composer = Array.from(content.getElementsByTagName('a')).map(a => a.textContent.trim());
				break;
			  case 'conductors':
				conductors = Array.from(content.getElementsByTagName('a')).map(a => a.textContent.trim());
				break;
			  case 'producer':
				producer = content.textContent.trim();
				break;
			  case 'genres':
				genres = Array.from(content.getElementsByTagName('a')).map(a => a.textContent.trim());
				break;
			  case 'release date':
				releaseDate = content.textContent.trim();
				break;
			  default:
				attributes[key] = content.textContent.trim();
			}
		  });
		  getDescription(response, 'div.product-single-content > div.entry > p', false);
		  if (Object.keys(attributes).length > 0) {
			if (description) description += '\n\n';
			description += Object.keys(attributes).map(key => '[b]' + key+ ':[/b] ' + attributes[key]).join('\n');
		  }
		  if ((ref = response.document.querySelector('div.music-reviews-list')) != null) {
			if (description) description += '\n\n';
			description += html2php(ref, response.finalUrl).collapseGaps();
		  }
		  if (i = nativeDSDBooklets(response)) {
			if (description) description += '\n\n';
			description += i;
		  }
		  if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
			imgUrl = ref.content;
		  trs = response.document.querySelectorAll('div#tracklist > div.nativedsd-player');
		  return Array.from(trs).map((tr, index) => ({
			artist: isVA ? VA : typeof artist == 'string' ? artist : undefined,
			artists: !isVA && Array.isArray(artist) && artist.length > 0 ? artist : undefined,
			album: album,
			//album_year: albumYear,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			encoding: 'lossless',
			media: media,
			genre: genres.join('; '),
			disc_number: discNumber,
			total_discs: totalDiscs,
			disc_subtitle: discSubtitle,
			track_number: (ref = tr.querySelector('div.nativedsd-player-number')) != null ?
			  parseInt(ref.textContent) || ref.textContent.trim() : undefined,
			total_tracks: trs.length,
			title: (ref = tr.querySelector('div.nativedsd-player-title')) != null ? ref.textContent.trim() : undefined,
			composers: Array.isArray(composer) && composer.length > 0 ? composer : undefined,
			conductors: Array.isArray(conductors) && conductors.length > 0 ? conductors : undefined,
			producer: producer,
			duration: (ref = tr.querySelector('div.nativedsd-player-duration')) != null ?
				timeStringToTime(ref.textContent) : undefined,
			url: (ref = response.document.querySelector('meta[property="og:url"][content]')) != null ?
				ref.content : response.finalUrl,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  }));
		});
	  }/* else if (url.hostname.endsWith('junodownload.com') && /\/([\d\-]+)\/?$/.test(url.pathname)) {
		let productKey = RegExp.$1;
		return globalXHR('https://www.junodownload.com/api/1.2/playlist/getplaylistdetails/?product_key='.concat(productKey), {
		  responseType: 'xml',
		}).then(response => Array.from(response.document.querySelectorAll('playlist > trackList > track')).map(function(track, index, trackList) {
		  artist = Array.from(track.querySelectorAll('extension > release_artists > artist > name'))
			.map(artist => artist.textContent.trim());
		  isVA = artist.length == 1 && vaParser.test(artist[0]);
		  trackArtist = Array.from(track.querySelectorAll('extension > artists > artist > name'))
			.map(artist => artist.textContent.trim());
		  trackArtist = isVA || !trackArtist.equalCaselessTo(artist) ? joinArtists(trackArtist) : undefined;
		  title = getValue('extension > track_title');
		  if (getValue('extension > mix_title')) title += ' (' + getValue('extension > mix_title') + ')';
		  return {
			artist: isVA ? VA : artist.join(', '),
			album: getValue('album'),
			release_date: getValue('extension > relDate'),
			label: getValue('extension > label > name'),
			catalog: getValue('extension > catNumber'),
			media: media,
			genre: getValue('extension > genre'),
			track_number: parseInt(getValue('trackNum')),
			total_tracks: trackList.length,
			title: getValue('extension > track_title'),
			track_artist: trackArtist,
			duration: parseInt(getValue('extension > length')) || undefined,
			description: getValue('extension > rating_comment'),
			identifiers: { JUNODOWNLOAD_ID: productKey },
			cover_url: getValue('image'),
		  };

		  function getValue(selector) {
			var node = track.querySelector(selector);
			return node != null ? node.textContent.trim() : undefined;
		  }
		}));
	  } */else if (url.hostname.endsWith('junodownload.com')) return globalXHR(url).then(function(response) {
		if (/'id':'([\d\-]+)'/.test(response.responseText) || /\/([\d\-]+)\/?$/.test(new URL(response.finalUrl).pathname)) {
		  identifiers.JUNODOWNLOAD_ID = RegExp.$1;
		  var metaData = globalXHR('https://www.junodownload.com/api/1.2/playlist/getplaylistdetails/?product_key=' +
			identifiers.JUNODOWNLOAD_ID, { responseType: 'xml' })
		  		.then(response => Array.from(response.document.querySelectorAll('playlist > trackList > track')));
		} else metaData = Promise.reject('No Id');
		var productArtist;
		if ((ref = response.document.querySelectorAll('div.breadcrumb_text > span:not([class])')).length == 4) {
		  artist = Array.from(ref[ref.length - 1].querySelectorAll('a')).map(elem => elem.textContent.trim());
		  productArtist = ref[ref.length - 1].textContent.trim();
		} else if ((ref = response.document.querySelector('h2.product-artist')) != null) {
		  artist = Array.from(ref.querySelectorAll('a')).map(elem => elem.textContent.trim().titleCase());
		  productArtist = ref.textContent.trim().titleCase();
		}
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('meta[itemprop="name"]')) != null) album = ref.content.trim();
		if ((ref = response.document.querySelector('meta[itemprop="author"]')) != null) label = ref.content.trim();
		if ((ref = response.document.querySelector('span[itemprop="datePublished"]')) != null)
		  releaseDate = ref.firstChild.data.trim();
		response.document.querySelectorAll('div.mb-3 > strong').forEach(function(it) {
		  if (it.textContent.startsWith('Genre')) {
			ref = it;
			while ((ref = ref.nextElementSibling) != null && ref.nodeName == 'A') genres.push(ref.textContent.trim());
		  } else if (it.textContent.startsWith('Cat')) {
			if ((ref = it.nextSibling) != null && ref.nodeType == Node.TEXT_NODE) catalogue = ref.wholeText.trim();
		  }
		});
		getDescription(response, 'div[itemprop="review"]');
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null) imgUrl = ref.content;
		trs = response.document.querySelectorAll('div.product-tracklist > div[itemprop="track"]');
		return Array.from(trs).map(function(tr) {
		  trackIdentifiers = { BPM: tr.children[2].textContent.trim() };
		  trackNumber = undefined;
		  tr.querySelector('div.track-title').childNodes.forEach(function(n) {
			if (trackNumber || n.nodeType != Node.TEXT_NODE) return;
			trackNumber = n.data.trim().replace(/\s*\..*$/, '');
		  });
		  trackArtist = (ref = tr.querySelector('meta[itemprop="byArtist"]')) != null ? ref.content : undefined;
		  title = (ref = tr.querySelector('span[itemprop="name"]')) != null ? ref.textContent.trim() : undefined;
		  if (title && trackArtist && title.startsWith(trackArtist + ' - ')) title = title.slice(trackArtist.length + 3);
		  return {
			artist: isVA ? VA : productArtist,
			artists: !isVA ? artist : undefined,
			album: album,
			album_year: extractYear(releaseDate),
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			media: media,
			genre: genres.join('; '),
			disc_number: discNumber,
			total_discs: totalDiscs,
			disc_subtitle: discSubtitle,
			track_number: trackNumber,
			total_tracks: trs.length,
			title: title,
			track_artist: trackArtist && (isVA || trackArtist.toLowerCase() != productArtist.toLowerCase()) ? trackArtist : undefined,
			duration: durationFromMeta(tr),
			url: !identifiers.JUNODOWNLOAD_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  };
		});
	  }); else if (url.hostname.endsWith('hdtracks.com')) return loadHDtracksMetadata(url).then(function(album) {
		identifiers.HDTRACKS_ID = album.id || album.productId;
		if (album.upc) identifiers.BARCODE = album.upc;
		if (album.parentalWarning == 'NotExplicit') identifiers.EXPLICIT = 0;
			else if (album.parentalWarning == 'Explicit') identifiers.EXPLICIT = 1;
		isVA = album.artists.length <= 0 || vaParser.test(album.mainArtist);
		var guests = [], composers = [], producers = [];
		if (album.credits) album.credits.split(/\r?\n/).forEach(function(credit) {
		  if (!/^(.*)\s*:\s*(.*)$/.test(credit)) return;
		  var role = RegExp.$1, name = RegExp.$2;
		  if (role == 'Artist' && name.toLowerCase() != album.mainArtist.toLowerCase()) guests.pushUniqueCaseless(name);
		  else if (role == 'Composer') composers.pushUniqueCaseless(name);
		  else if (/\b(?:Producer)$/.test(role)) producers.pushUniqueCaseless(name);
		});
		//var albumGuests = guests.length > 0 ? ' feat. ' + joinArtists(guests) : '';
		return Promise.all(album.trackIds.map((trackId, index) => loadHDtracksMetadata(trackId, 'track').catch(function(reason) {
		  console.warn('Fetching details from HDtracks failed at least for one track:', reason);
		  return album.tracks[index];
		}).then(function(track) {
		  trackIdentifiers = {
			ISRC: track.isrc,
			TRACK_ID: track.id,
			MD5: track.md5,
		  };
		  if (track.upc) trackIdentifiers.BARCODE = track.upc;
		  var mainArtists = splitAmpersands(track.mainArtist),
			  trackComposers = [], trackProducers = [], trackGuests = [];
		  if (track.credits) track.credits.split(/\r?\n/).forEach(function(credit) {
			if (!/^(.*)\s*:\s*(.*)$/.test(credit)) return;
			var role = RegExp.$1, name = RegExp.$2;
			if (role == 'Artist' && !mainArtists.includesCaseless(name)) trackGuests.pushUniqueCaseless(name);
			else if (role == 'Composer') trackComposers.pushUniqueCaseless(name);
			else if (/\b(?:Producer)$/.test(role)) trackProducers.pushUniqueCaseless(name);
		  });
		  if (track.mainArtist && trackGuests.length > 0) track.mainArtist += ' feat. ' + joinArtists(trackGuests);
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? album.artists : undefined,
			featured_artists: guests,
			album: album.name,
			release_date: track.release || album.release,
			album_year: album.originalRelease ? extractYear(album.originalRelease) : undefined,
			label: track.label || album.label,
			distributor: track.distributor || album.distributor,
			media: media,
			samplerate: track.rate || album.rate || undefined,
			bitdepth: track.resolution || album.resolution || undefined,
			genre: track.genre || album.genre,
			total_discs: album.discs,
			track_number: track.index,
			total_tracks: album.tracksCount, //album.tracks.length
			composers: trackComposers.length > 0 ? trackComposers : composers,
			//producers: trackProducers.length > 0 ? trackProducers : producers,
			title: track.name,
			track_artist: track.mainArtist && (isVA || !artistsMatch(track.mainArtist, album.mainArtist)) ?
				track.mainArtist : undefined,
			duration: track.duration,
			url: !identifiers.HDTRACKS_ID ? response.finalUrl : undefined,
			identifiers: mergeIds(),
			cover_url: /*track.cover || */album.cover,
		  };
		})));
	  }); else if (url.hostname.endsWith('deezer.com')) {
		return /\/album\/(\d+)\b/i.test(url.pathname) ? queryDeezerAPI('album', RegExp.$1).then(function(release) {
		  if (prefs.diag_mode) console.debug('Deezer metadata loaded:', release);
		  identifiers.DEEZER_ID = release.id;
		  if (release.record_type && release.record_type != 'album') identifiers.RELEASETYPE = release.record_type;
		  if (release.upc) identifiers.BARCODE = release.upc;
		  if (release.cover_xl) imgUrl = release.cover_xl.replace('1000x1000-000000-80-0-0', '1400x1400-000000-100-0-0');
		  artist = [
			release.contributors.filter(contributor => contributor.role == 'Main').map(contributor => contributor.name),
			release.contributors.filter(contributor => contributor.role == 'Featured').map(contributor => contributor.name),
		  ];
		  isVA = vaParser.test(release.artist.name);
		  return release.tracks.data.map(function(track, ndx) {
			trackIdentifiers = { TRACK_ID: track.id };
			return {
			  artist: isVA ? VA : release.artist.name,
			  album: release.title,
			  release_date: release.release_date,
			  label: release.label,
			  media: media,
			  genre: release.genres.data.map(it => it.name).join('; '),
			  track_number: ndx + 1,
			  total_tracks: release.nb_tracks,
			  title: track.title,
			  track_artist: track.artist.name && (isVA || track.artist.name != release.artist.name) ?
			  	track.artist.name : undefined,
			  duration: track.duration,
			  url: !identifiers.DEEZER_ID ? deezerAlbumPrefix + release.id : undefined,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  });
		}) : Promise.reject('This resource is not supported, pick a real album');
	  } else if (url.hostname.endsWith('spotify.com')) {
		return  /\/albums?\/(\w+)$/i.test(url.pathname) ? querySpotifyAPI('albums/' + RegExp.$1).then(function(release) {
		  if (prefs.diag_mode) console.debug('Spotify metadata loaded:', release);
		  identifiers.SPOTIFY_ID = release.id;
		  if (release.album_type && release.album_type != 'album') identifiers.RELEASETYPE = release.album_type;
		  if (release.external_ids.upc) identifiers.BARCODE = release.external_ids.upc;
		  artist = release.artists.map(artist => artist.name);
		  isVA = release.artists.length <= 0 || release.artists.length == 1 && vaParser.test(release.artists[0].name);
		  releaseDate = release.release_date_precision == 'year' ? extractYear(release.release_date)
		  	: release.release_date_precision == 'month' && /\b(\d{4}-\d{2})\b/.test(release.release_date) ? RegExp.$1
		  	: release.release_date;
		  imgUrl = release.images.reduce((acc, image) => image.width * image.height > acc.width * acc.height ? image : acc);
		  return (function() {
			if (release.tracks.items.length >= release.total_tracks) return Promise.resolve(release.tracks.items);
			let promises = [];
			for (let offset = release.tracks.offset + release.tracks.items.length; offset < release.total_tracks; offset += 50)
			  promises.push(querySpotifyAPI(`albums/${release.id}/tracks`, { offset: offset, limit: 50 }).then(function(tracks) {
				if (prefs.diag_mode) console.debug('Additional Spotify tracks loaded:', tracks);
				return tracks.items;
			  }));
			return Promise.all(promises).then(tracks => release.tracks.items.concat(...tracks));
		  })().then(tracks => tracks.map(function(track, ndx) {
			if (track.type != 'track') console.warn('Spotify metadata assertion failed: invalid track type', track);
			trackIdentifiers = { TRACK_ID: track.id };
			if ('explicit' in track) trackIdentifiers.EXPLICIT = Number(track.explicit);
			trackArtist = track.artists.map(artist => artist.name);
			return {
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: release.name,
			  release_date: releaseDate,
			  label: release.label,
			  media: media,
			  genre: release.genres.join('; ') || undefined,
			  disc_number: track.disc_number,
			  disc_subtitle: discSubtitle,
			  track_number: track.track_number,
			  total_tracks: release.total_tracks,
			  title: track.name,
			  track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
			  	trackArtist : undefined,
			  duration: track.duration_ms / 1000,
			  url: !identifiers.SPOTIFY_ID ? 'https://open.spotify.com/album/' + release.id : undefined,
			  identifiers: mergeIds(),
			  cover_url: imgUrl ? imgUrl.url : undefined,
			};
		  }));
		}) : Promise.reject('This resource is not supported, pick a real album');
	  } else if (url.hostname.endsWith('prostudiomasters.com')) return globalXHR(url).then(function(response) {
		if ((ref = response.document.querySelector('img.album-art')) != null) imgUrl = ref.currentSrc || ref.src;
		try {
		  if ((ref = response.document.querySelector('body > script[charset]')) == null
			  || !/\b(?:PSM\.album)\s*=\s*(\{[\S\s]+\});(?=\s*(?:PSM)\b)/.test(ref.text))
			throw 'PSM metadata not found';
		  let album = JSON.parse(RegExp.$1);
		  if (prefs.diag_mode) console.debug('PSM metadata loaded:', album);
		  const artistSplitter = /\s*;+\s*/;
		  artist = album.ArtistName.split(artistSplitter);
		  isVA = vaParser.test(album.ArtistName);
		  if (album.id) identifiers.PROSTUDIOMASTERS_ID = parseInt(album.id) || album.id;
		  if (album.UPC) identifiers.BARCODE = album.UPC;
		  if (album.OriginalReleaseDate) releaseDate = album.OriginalReleaseDate;
		  if (album.LabelName) label = album.LabelName;
		  if (album.CatalogNumber) catalogue = album.CatalogNumber;
		  if (typeof album.versions == 'object') {
			let versions = Object.keys(album.versions);
			if (versions.length > 1) versions = versions.filter(version => /^(?:flac|dsd)_/i.test(version));
			if (versions.length == 1) {
			  versions = album.versions[versions[0]];
			  if (!label && versions.LabelName) label = versions.LabelName;
			  if (!catalogue && versions.CatalogNumber) catalogue = versions.CatalogNumber;
			  if (!releaseDate && versions.OriginalReleaseDate) releaseDate = versions.OriginalReleaseDate;
			  if (!identifiers.BARCODE && versions.UPC) identifiers.BARCODE = versions.UPC;
			  //if (!identifiers.BARCODE && versions.ICPN) identifiers.BARCODE = versions.ICPN;
			}
		  }
		  if (!identifiers.BARCODE && album.ICPN) identifiers.BARCODE = album.ICPN;
		  if (!releaseDate && /^[℗©]\s*(\d{4})\b/.test(album.PLine) || /^[℗©]\s*(\d{4})\b/.test(album.CLine))
			releaseDate = RegExp.$1;
		  if (album.GenreName) genres.push(album.GenreName);
		  if (album.SubGenreName) genres.push(album.SubGenreName);
		  if (album.genres) genres.push(album.genres);
		  if (/\b(\d+(?:\.\d+)?)\s*kHz\s*\/\s*(\d+)[\-\s]?bit\s+(\w+)\b/i.test(album.recording_info)) {
			samplerate = parseFloat(RegExp.$1) * 1000 || undefined;
			bitdepth = parseInt(RegExp.$2) || undefined;
			format = RegExp.$3;
			if (['FLAC', 'AIFF', 'WAV', 'PCM'].includes(format)) encoding = 'lossless';
		  }
		  if (album.album_info) {
			description = html2php(domParser.parseFromString(album.album_info, 'text/html').body, response.finalUrl);
			if (description) description = '[quote]' + description + '[/quote]';
		  }
		  return album.tracks.filter(track => track.duration !== '0' && track.ISRC != 'Digital Booklet').map(function(track) {
			trackIdentifiers = { TRACK_ID: parseInt(track.id) || track.id };
			if ('ISRC' in track) trackIdentifiers.ISRC = track.ISRC;
			if ('ExplicitLyrics' in track) trackIdentifiers.EXPLICIT = Number(track.ExplicitLyrics),
			trackArtist = track.ArtistName.split(artistSplitter);
			return {
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: album.AlbumName,
			  genre: genres.join('; '),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  codec: format,
			  encoding: encoding,
			  bitdepth: bitdepth,
			  samplerate: samplerate,
			  media: media,
			  disc_number: parseInt(track.DiscSeq) || undefined,
			  disc_subtitle: track.GroupingTitle,
			  track_number: parseInt(track.TrackSeq) || undefined,
			  total_tracks: album.tracks.length,
			  title: track.TrackName,
			  track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalTo(artist)) ? trackArtist : undefined,
			  composers: track.composers ? track.composers.split(artistSplitter) : undefined,
			  duration: parseInt(track.duration) || undefined,
			  url: !identifiers.PROSTUDIOMASTERS_ID ? response.finalUrl : undefined,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  });
		} catch(e) {
		  console.warn('ProStudioMasters: falling back to HTML scraper for the reason', e);
		  if (/\/page\/(\d+)$/i.test(response.finalUrl)) identifiers.PROSTUDIOMASTERS_ID = RegExp.$1;
		  artist = Array.from(response.document.querySelectorAll('h2.ArtistName > a')).map(node => node.textContent.trim());
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = response.document.querySelector('h3.AlbumName')) != null) album = ref.textContent.trim();
		  if ((ref = response.document.querySelector('div.pline')) != null
			  && /^(?:[℗©]\s*)+(\d{4})\s+(.+)/.test(ref.textContent.trim())) {
			releaseDate = RegExp.$1;
			label = RegExp.$2;
		  }
		  getDescription(response, 'div.album-info', false);
		  trs = response.document.querySelectorAll('div.album-tracks > div.tracks > table > tbody > tr');
		  totalTracks = Array.from(trs).filter(tr => tr.classList.contains('track-playable')).length;
		  discNumber = 0;
		  trs.forEach(function(tr) {
			if (tr.classList.contains('track-playable')) {
			  trackArtist = samplerate = bitdepth = format = title = undefined; trackIdentifiers = {};
			  if (ref = tr.getAttribute('data-track-id')) trackIdentifiers.TRACK_ID = ref;
			  trackNumber = (ref = tr.querySelector('div.num')) != null ? parseInt(ref.firstChild.textContent.trim()) : undefined;
			  if (trackNumber == 1) ++discNumber;
			  if ((ref = tr.querySelector('td.track-name > div.name')) != null) {
				title = ref.firstChild.textContent.trim();
				if ((ref = ref.querySelector(':scope small')) != null) trackArtist = ref.firstChild.textContent;
			  };
			  if ((ref = tr.querySelector('span.track-format')) != null && /^(\d+(?:[,\.]\d+)?)\s*([kMG]?Hz)(?:\s+(\d+)-bit)?\s*\|\s*(\S+)$/i.test(ref.textContent.trim())) {
				samplerate = parseFloat(RegExp.$1);
				['hz', 'khz', 'mhz', 'ghz'].forEach((unit, ndx) => {
				  if (RegExp.$2.toLowerCase() == unit) samplerate *= 1000 ** ndx;
				});
				samplerate = Math.round(samplerate) || undefined;
				bitdepth = parseInt(RegExp.$3) || undefined;
				format = RegExp.$4;
			  }
			  tracks.push({
				artist: isVA ? VA : undefined,
				artists: !isVA ? artist : undefined,
				album: album,
				//album_year: extractYear(releaseDate),
				release_date: releaseDate,
				label: label,
				catalog: catalogue,
				codec: format,
				bitdepth: bitdepth,
				samplerate: samplerate,
				media: media,
				disc_number: discNumber,
				total_discs: totalDiscs,
				disc_subtitle: discSubtitle,
				track_number: trackNumber,
				total_tracks: totalTracks,
				title: title,
				track_artist: trackArtist && (isVA || !artistsMatch(trackArtist, artist)) ? trackArtist : undefined,
				duration: (ref = tr.querySelector('td:last-of-type')) != null ? timeStringToTime(ref.firstChild.data) : undefined,
				url: !identifiers.PROSTUDIOMASTERS_ID ? response.finalUrl : undefined,
				description: description,
				identifiers: mergeIds(),
				cover_url: imgUrl,
			  });
			} else if ((ref = tr.querySelector('div.grouping-title')) != null) {
			  discSubtitle = ref.textContent.trim();
			  guessDiscNumber();
			}
		  });
		  return tracks;
		}
	  }); else if (url.hostname.endsWith('play.google.com') && url.pathname.startsWith('/store/music/album/')) {
		let _query = new URLSearchParams(url.search);
		_query.set('hl', 'en');
		url.search = _query;
		return globalXHR(url).then(function(response) {
		  var search = new URLSearchParams(new URL(response.finalUrl).search);
		  var ID = search.get('id'), trackID, aggregateRating;
		  if (ID) identifiers.GOOGLE_ID = ID;
		  var root = response.document.querySelector('div[itemtype="https://schema.org/MusicAlbum"]');
		  if (root == null) throw new Error('Unexpected Google Play metadata structure');
		  if ((ref = root.querySelector('div[itemprop="byArtist"]')) != null) {
			artist = Array.from(ref.querySelectorAll('meta[itemprop="name"]')).map(it => it.content);
			isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  }
		  if ((ref = root.querySelector('meta[itemprop="name"]')) != null) album = ref.content;
		  genres = Array.from(root.querySelectorAll('meta[itemprop="genre"]')).map(elem => elem.content);
		  if ((ref = root.querySelector('meta[itemprop="datePublished"]')) != null) releaseDate = ref.content;
		  if ((ref = root.querySelector('meta[itemprop="numTracks"]')) != null) totalTracks = parseInt(ref.content);
		  if ((ref = root.querySelector('meta[itemprop="ratingValue"]')) != null) aggregateRating = parseFloat(ref.content);
		  if ((ref = response.document.querySelector('h1[class][itemprop="name"] > span')) != null
			 && (ref = ref.parentNode.parentNode.querySelector('div[class] > span[class]')) != null
			 && /\b(?:Explicit)\b/i.test(ref.textContent)) identifiers.EXPLICIT = 1;
		  if ((ref = response.document.querySelector('meta[itemprop="image"]')) != null) imgUrl = ref.content;
		  try {
			let _objs = loadGoogleMetadata(response);
			let _albumInfo = _objs.filter(obj => { try { return obj[0].length == 22 } catch(e) { return false } });
			let _tracks = _objs.filter(function(obj) {
			  try {
				return typeof obj[0][0][1] == 'boolean' && typeof obj[0][0][2] == 'boolean'
				   && typeof obj[0][0][3] == 'string' && typeof obj[0][0][4] == 'string';
			  } catch(e) { return false }
			});
			if (_albumInfo.length == 1) _albumInfo = _albumInfo[0][0]; else throw 'Album metadata not found';
			if (_tracks.length == 1) _tracks = _tracks[0][0][0]; else throw 'Tracks metadata not found';
			if (prefs.diag_mode) console.debug('Google Play objects extracted successfully:', _albumInfo, _tracks);
			try {
			  artist = _albumInfo[18][0][8].map(artist => artist[1]);
			  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
			} catch(e) { }
			try { description = _albumInfo[10][0][1] } catch(e) { }
			try { genres = _albumInfo[18][0][6].map(genre => genre[2]) } catch(e) { }
			_tracks[0].forEach(function(volume) {
			  Array.prototype.push.apply(tracks, volume[0].map(function(track) {
				trackArtist = track[0][8].map(ta => ta[1]);
				trackIdentifiers = { TRACK_ID: track[12][0] };
				return {
				  artist: isVA ? VA : undefined,
				  artists: !isVA ? artist : undefined,
				  album: _albumInfo[0][0] || track[9][0],
				  album_year: extractYear(_albumInfo[18][0][7][1] /*track[0][7][0]*/),
				  release_date: _albumInfo[18][0][7][2],
				  label: _albumInfo[18][0][4] || track[0][4],
				  media: media,
				  genre: genres.join('; '),
				  disc_number: volume[1],
				  total_discs: _tracks[0].length,
				  track_number: track[1],
				  total_tracks: _albumInfo[18][4],
				  title: track[8][0],
				  track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
				  	trackArtist : undefined,
				  duration: track[0][1],
				  description: description,
				  url: !identifiers.GOOGLE_ID ? response.finalUrl : undefined,
				  identifiers: mergeIds(),
				  cover_url: imgUrl,
				};
			  }));
			});
		  } catch(e) {
			console.warn('Google Play music: falling back to HTML scraper (' + e + ')');
			tracks = [];
			if ((ref = response.document.querySelector('span > a[itemprop="genre"]')) != null) try {
			  label = ref.parentNode.nextElementSibling.textContent.trim().replace(/^(?:[©℗]|\([cCpP]\))\s*\d{4}\s+/, '');
			} catch(e) { console.warn('Unexpected HTML structure (' + e + ')') }
			//getDescription(response, '???', false);
			var volumes = response.document.querySelectorAll('c-wiz > div > h2');
			if (volumes.length <= 0) {
			  //response.document.querySelectorAll('c-wiz > div > table > tbody > tr[class]').forEach(scanPlaylist);
			  trackNumber = 0;
			  root.querySelectorAll('div[itemprop="track"]').forEach(function(tr) {
				trackIdentifiers = {};
				if ((ref = tr.querySelector('meta[itemprop="url"]')) != null) {
				  search = new URLSearchParams(new URL(ref.content).search);
				  let trackID = search.get('tid');
				  if (trackID) trackIdentifiers.TRACK_ID = trackID;
				}
				++trackNumber;
				title = (ref = tr.querySelector('meta[itemprop="name"]')) != null ? ref.content : undefined;
				trackArtist = (ref = tr.querySelector('div[itemprop="byArtist"]')) != null ?
				  Array.from(ref.querySelectorAll('meta[itemprop="name"]')).map(it => it.content) : [];
				duration = durationFromMeta(tr);
				addTrack();
			  });
			} else volumes.forEach(function(volume) {
			  discNumber = undefined; discSubtitle = volume.textContent.trim();
			  guessDiscNumber();
			  volume.nextElementSibling.querySelectorAll('tbody > tr[class]').forEach(scanPlaylist);
			});

			function scanPlaylist(tr) {
			  trackNumber = (ref = tr.querySelector('td:nth-of-type(1) > div')) != null ?
				parseInt(ref.textContent) || ref.textContent.trim() : undefined;
			  title = (ref = tr.querySelector('td[itemprop="name"]')) != null ? ref.textContent.trim() : undefined;
			  duration = (ref = tr.querySelector('td:nth-of-type(3)')) != null ? timeStringToTime(ref.textContent) : undefined;
			  trackArtist = Array.from(tr.querySelectorAll('td:nth-of-type(4) > a')).map(it => it.textContent.trim());
			  addTrack();
			}
			function addTrack() {
			  tracks.push({
				artist: isVA ? VA : undefined,
				artists: !isVA ? artist : undefined,
				album: album,
				//album_year: extractYear(releaseDate),
				release_date: releaseDate,
				label: label,
				catalog: catalogue,
				media: media,
				genre: genres.join('; '),
				disc_number: discNumber,
				total_discs: totalDiscs,
				disc_subtitle: discSubtitle,
				track_number: trackNumber,
				total_tracks: totalTracks,
				title: title,
				track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
					trackArtist : undefined,
				duration: duration,
				url: identifiers.GOOGLE_ID ? undefined : response.finalUrl,
				description: description,
				identifiers: mergeIds(),
				cover_url: imgUrl,
			  });
			}
		  }
		  return tracks;
		});
	  } else if (url.hostname.endsWith('7digital.com')) return globalXHR(url).then(function(response) {
		if ((ref = response.document.querySelector('table.release-track-list')) != null)
		  identifiers['7DIGITAL_ID'] = parseInt(ref.dataset.releaseid) || ref.dataset.releaseid;
		artist = Array.from(response.document.querySelectorAll('h2.release-info-artist > span[itemprop="byArtist"] > meta[itemprop="name"]'))
		  .map(node => node.content);
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('h1.release-info-title')) != null) album = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.release-date-info > p')) != null) releaseDate = normalizeDate(ref.textContent);
		if ((ref = response.document.querySelector('div.release-label-info > p')) != null) label = ref.textContent.trim();
		response.document.querySelectorAll('dl.release-data > dt.release-data-label').forEach(function(dt) {
		  if (/\b(?:Genres?):/.test(dt.textContent)) genres = Array.from(dt.nextElementSibling.querySelectorAll('a')).map(a => a.textContent.trim());
		});
		//getDescription(response, 'div.album-info', false);
		if ((ref = response.document.querySelector('img[itemprop="image"]')) != null) imgUrl = ref.src;
		totalTracks = response.document.querySelectorAll('table.release-track-list > tbody > tr.release-track').length;
		response.document.querySelectorAll('table.release-track-list').forEach(function(table) {
		  discSubtitle = discNumber = undefined;
		  if ((ref = table.querySelector('caption > h4.release-disc-info')) != null) {
			discSubtitle = ref.textContent.trim();
			guessDiscNumber();
		  }
		  table.querySelectorAll('tbody > tr.release-track').forEach(function(tr) {
			trackIdentifiers = {};
			if (tr.dataset.trackid) trackIdentifiers.TRACK_ID = parseInt(tr.dataset.trackid) || tr.dataset.trackid;
			tracks.push({
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: media,
			  genre: genres.join('; '),
			  disc_number: discNumber,
			  total_discs: totalDiscs,
			  disc_subtitle: discSubtitle,
			  track_number: (ref = tr.querySelector('td.release-track-preview > em.release-track-preview-text')) != null ?
				ref.textContent.trim() : undefined,
			  total_tracks: totalTracks,
			  title: (ref = tr.querySelector('td.release-track-name > meta[itemprop="name"]')) != null ? ref.content : undefined,
			  duration: durationFromMeta(tr),
			  url: (ref = response.document.querySelector('head > meta[property="og:url"]')) != null ?
			  	ref.content : response.finalUrl.replace(/\?.*$/, ''),
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			});
		  });
		});
		return tracks;
	  }); else if (url.hostname.endsWith('e-onkyo.com')) return globalXHR(url).then(function(response) {
		if (/\/album\/(\w+)\/?$/.test(response.finalUrl)) identifiers.EONKYO_ID = RegExp.$1;
		artist = Array.from(response.document.querySelectorAll('div.jacketDetailArea p.artistsName > a'))
		  .map(node => node.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div.jacketDetailArea p.packageTtl')) != null)
		  album = ref.firstChild.wholeText.trim();
		if ((ref = response.document.querySelector('div.jacketDetailArea p.recordlabelName > a')) != null)
		  label = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.jacketDetailArea p.releaseDay > a')) != null)
		  releaseDate = normalizeDate(ref.textContent, 'jp');
		if ((ref = response.document.querySelector('div.jacketDetailArea p.packageNoteDetail')) != null
			&& /^\s*(?:\(C\)|©)\s+(\d{4})\b/i.test(ref.lastChild.textContent)) albumYear = parseInt(RegExp.$1);
		//getDescription(response, 'div#credit', true);
		if (/\s+\(\s*(?:(\d+)[\-\s]*bit)?\s*\/?\s*(?:(\d+(?:\.\d+)?)\s*kHz)?\s*\)\s*$/i.test(album)) {
		  album = RegExp.leftContext;
		  bitdepth = parseInt(RegExp.$1) || undefined;
		  samplerate = parseFloat(RegExp.$2) * 1000;
		}
		let formats = [];
		function enumFormats(elem) {
		  if ((matches = /(\w+)\s+(\d+(?:\.\d+)?)\s*([kM]Hz)\s*\/\s*(\d+)[\s\-]?bits?\b/.exec(elem.textContent)) == null)
			return;
		  formats.push([
			matches[1].toUpperCase(),
			parseFloat(matches[2].replace(',', '.')) * 10**(matches[3] == 'kHz' ? 3 : matches[3] == 'MHz' ? 6 : 0),
			parseInt(matches[4]),
		  ]);
		}
		response.document.querySelectorAll('div.purchaseInr > dl > dd > p.musicspec').forEach(enumFormats);
		if (formats.length <= 0) response.document.querySelectorAll('select#ddlFileTypeCD > option').forEach(enumFormats);
		getDescription(response, 'div#info > div.infoTxtArea', true);
		let credits = [];
		response.document.querySelectorAll('div#credit > p').forEach(function(p) {
		  var trackNumber = parseInt(p.firstChild.wholeText);
		  if (!(trackNumber > 0)) return;
		  let artists = {};
		  Array.from(p.getElementsByTagName('a')).map(a => a.textContent.trim()).forEach(function(artist) {
			if (/^(.+?)\s*\[([^\[\]]+)\]$/.test(artist)) {
			  artist = RegExp.$1;
			  var role = RegExp.$2;
			}
			if (/^(?:(?:Background\s+)?(?:Vocals?|Vocalist)|(?:\w+\s)?Guitar|Bass|Drums|Piano|Keyboards|Strings|Percussion|Violin|Viola|Cello|Mellotron|Synthesizer)\b/i.test(role))
			  role = 'Performer';
			if (/^(?:Author|(?:Composer)?Lyricist|Writer)$/i.test(role)) role = 'Composer';
			if (/^(?:Executive\sProducer)$/i.test(role)) role = 'Producer';
			if (artists[role] == undefined) artists[role] = [];
			artists[role].pushUniqueCaseless(artist);
		  });
		  credits[trackNumber - 1] = artists;
		});
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
		  imgUrl = ref.content.replace(/\/s\d+\//, '/s0/');
		trs = response.document.querySelectorAll('dl.musicList > dd.musicBox');
		tracks = Array.from(trs).map(function(tr, index) {
		  trackNumber = (ref = tr.querySelector('div.musicListNo')) != null ? ref.textContent.trim() : index + 1;
		  let trackPerformers = [];
		  try {
			let trackArtists = credits[trackNumber - 1];
			trackArtist = trackArtists.MainArtist ? trackArtists.MainArtist : [];
			var trackGuests = trackArtists.FeaturedArtist ?
			  trackArtists.FeaturedArtist.filter(artist => !trackArtist.includesCaseless(artist)) : [];
			producer = trackArtists.Producer ? trackArtists.Producer : [];
			composer = trackArtists.Composer ? trackArtists.Composer : [];
			trackPerformers = trackArtists.Performer ? trackArtists.Performer : [];
		  } catch(e) { trackArtist = []; trackGuests = []; producer = []; composer = [] }
		  if (!isVA && artistsMatch([trackArtist, trackGuests], [artist, []])) { trackArtist = []; trackGuests = [] }
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			album_year: albumYear,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			encoding: 'lossless',
			codec: formats.length > 0 && formats.map(format => format[0]).homogeneous() ? formats[0][0] : undefined,
			samplerate: formats.length > 0 && formats.map(format => format[1]).homogeneous() ? formats[0][1] : undefined,
			bitdepth: formats.length > 0 && formats.map(format => format[2]).homogeneous() ? formats[0][2] : undefined,
			media: media,
			track_number: trackNumber,
			total_tracks: trs.length,
			title: (ref = tr.querySelector('div.musicTtl > span')) != null ? ref.title || ref.textContent.trim() : undefined,
			track_artists: trackArtist.length > 0 ? trackArtist : undefined,
			track_guests: trackGuests.length > 0 ? trackGuests : undefined,
			composers: composer.length > 0 ? composer : undefined,
			producers: producer.length > 0 ? producer : undefined,
			performers: trackPerformers.length > 0 ? trackPerformers : undefined,
			duration: (ref = tr.querySelector('div.musicTime')) != null ? timeStringToTime(ref.textContent.trim()) : undefined,
			url: !identifiers.EONKYO_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  };
		});
		return finalizeTracks();
	  }); else if (url.hostname.endsWith('store.acousticsounds.com')) return globalXHR(url).then(function(response) {
		if (/\/(\d+)\/$/.test(response.finalUrl)) identifiers.ACOUSTICSOUNDS_ID = RegExp.$1;
		artist = Array.from(response.document.querySelectorAll('div > h1 > a')).map(node => node.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if (isVA) artist = [];
		if ((ref = response.document.querySelector('div > h1')) != null) album = ref.lastChild.wholeText.trim().replace(/\s*-\s*/, '');
		response.document.querySelectorAll('div > p > table > tbody > tr > td:first-of-type').forEach(function(td) {
		  if (/^(?:Label)\b/i.test(td.textContent)) label = td.nextElementSibling.textContent.trim();
		  if (/^(?:Genre)\b/i.test(td.textContent)) genres[0] = td.nextElementSibling.textContent.trim();
		  if (/^(?:Product\s+No)\b/i.test(td.textContent)) catalogue = td.nextElementSibling.textContent.trim();
		  if (/^(?:Category)\b/i.test(td.textContent)) {
			if (/\b(\d+(?:\.\d+)?)\s*(?:kHz)\b/.test(td.nextElementSibling.textContent))
			  samplerate = parseFloat(RegExp.$1) * 1000;
			if (/\b(\d+)[\s\-]?(?:bits?)\b/i.test(td.nextElementSibling.textContent))
			  bitdepth = parseInt(RegExp.$1);
			if (/\b(FLAC|ALAC|WAV|DSD|AIFF)\b/i.test(td.nextElementSibling.textContent)) {
			  format = RegExp.$1;
			  encoding = 'lossless';
			}
		  }
		});
		getDescription(response, 'div#description > p', true);
		if ((ref = response.document.querySelector('div#detail > link[rel="image_src"]')) != null)
		  imgUrl = ref.href.replace(/\/medium\//i, '/xlarge/');
		trs = response.document.querySelectorAll('div#tracks > table > tbody > tr');
		return Array.from(trs).map(function(tr, index) {
		  title = (ref = tr.querySelector('td[nowrap]')) != null ? ref.textContent.trim() : undefined;
		  if ((matches = /^(\d+)(?:\s+\-|\.)\s+(.+)$/.exec(title)) != null) {
			trackNumber = matches[1];
			title = matches[2];
		  } else trackNumber = undefined;
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			encoding: encoding,
			codec: format,
			bitdepth: bitdepth,
			samplerate: samplerate || undefined,
			media: media,
			genre: genres.join('; '),
			track_number: trackNumber || index + 1,
			total_tracks: trs.length,
			title: title,
			url: !identifiers.ACOUSTICSOUNDS_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  };
		});
	  }); else if (url.hostname.endsWith('indies.eu')) return globalXHR(url).then(function(response) {
		if (/\/alba\/(\d+)\//.test(response.finalUrl)) identifiers.INDIESSCOPE_ID = parseInt(RegExp.$1);
		ref = response.document.querySelector(':root > body > div > div > div > h2');
		if (ref != null) artist = Array.from(ref.childNodes).map(node => node.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector(':root > body > div > div > div > h1')) != null)
		  album = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.infoBox')) != null) {
		  let ndx = 0;
		  ref.childNodes.forEach(function(child) {
			if (child.nodeName == 'BR') { ++ndx; return; }
			switch (ndx) {
			  case 0:
				if (child.nodeType == Node.TEXT_NODE) {
				  label = child.wholeText.trim();
				  if (/^(.*)\s+\/\s+(\d{4})$/.test(label)) {
					label = RegExp.$1;
					releaseDate = RegExp.$2;
				  }
				}
				break;
			  case 1:
				if (child.nodeType == Node.ELEMENT_NODE) genres.push(child.textContent.trim());
				break;
			  case 2:
				if (child.nodeType == Node.ELEMENT_NODE) catalogue = child.textContent.trim();
				break;
			}
		  });
		}
		getDescription(response, 'div.popis > section', true);
		if ((ref = response.document.querySelector('div.obrazekDetail > img')) != null) imgUrl = ref.src;
		trs = response.document.querySelectorAll('table.skladby > tbody > tr');
		return Array.from(trs).map(function(tr) {
		  title = undefined;
		  if ((ref = tr.querySelector('td.nazev')) != null) {
			trackNumber = parseInt(ref.firstChild.wholeText);
			title = ref.querySelector('strong').textContent.trim();
		  }
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			codec: format,
			media: media,
			genre: genres.join('; '),
			track_number: trackNumber,
			total_tracks: trs.length,
			title: title,
			duration: (ref = tr.querySelector('td:nth-of-type(4)')) != null ? timeStringToTime(ref.textContent) : undefined,
			identifiers: !identifiers.INDIESSCOPE_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  };
		});
	  }); else if (url.hostname.endsWith('classic.beatport.com')) return globalXHR(url).then(function(response) {
		if (/\/release\/\S+\/(\d+)\b/i.test(response.finalUrl)) identifiers.BEATPORT_ID = parseInt(RegExp.$1);
		artist = Array.from(response.document.querySelectorAll('div.release-detail div.block a[title]'))
		  .map(node => node.title || node.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div.release-detail h2')) != null) album = ref.textContent.trim();
		response.document.querySelectorAll('table.meta-data > tbody > tr').forEach(function(tr) {
		  var key = tr.querySelector('td.meta-data-label'), value = tr.querySelector('td.meta-data-value');
		  if (key == null || value == null) return;
		  if (/^(?:Release\s+Date)\b/i.test(key.textContent)) releaseDate = value.textContent.trim();
		  if (/^(?:Label)/i.test(key.textContent))
			label = Array.from(value.getElementsByTagName('a')).map(a => a.textContent.trim()).join(' / ');
		  if (/^(?:Catalog)/i.test(key.textContent)) catalogue = value.textContent.trim();
		});
		getDescription(response, 'p.description', true);
		if ((ref = response.document.querySelector('meta[name="og:image"][content]')) != null) imgUrl = ref.content;
		else if ((ref = response.document.querySelector('div.artwork')) != null)
		  imgUrl = 'https:' + ref.dataset.modalArtwork;
		if (imgUrl) imgUrl = imgUrl.replace(/\/image_size\/\d+x\d+\//i, '/image/');
		trs = response.document.querySelectorAll('table.track-grid > tbody > tr.track-grid-content');
		return Array.from(trs).map(function(tr) {
		  if ((ref = tr.querySelector('span[data-json]')) != null) try {
			var trackMeta = JSON.parse(ref.dataset.json);
			if (trackMeta.type != 'track') console.warn('BeatPort invalid track type:', trackMeta);
		  } catch(e) {
			trackMeta = {};
			console.warn(e);
		  }
		  trackIdentifiers = {
			TRACK_ID: trackMeta.id,
			BPM: trackMeta.bpm,
		  };
		  if (!(title = trackMeta.title) && (ref = tr.querySelector('td.titleColumn span')) != null) {
			title = ref.textContent.trim();
			if (title && (ref = tr.querySelector('td.titleColumn span.padL')) != null)
			  title += ' (' + ref.textContent.trim() + ')';
		  }
		  if (trackMeta.artists) {
			trackArtist = trackMeta.artists.filter(artist => artist.type == 'artist').map(artist => artist.name);
			let unknownTypes = new Set(trackMeta.artists.map(artist => artist.type)
				.filter(type => !['artist', 'remixer'].includes(type)));
			if (unknownTypes.size > 0) console.warn('Beatport unknown artist types:', Array.from(unknownTypes.keys()));
		  } else trackArtist = Array.from(tr.querySelectorAll('td.titleColumn > span.artistList > a'))
			.map(a => a.title || a.textContent.trim());
		  if ((ref = tr.querySelector(':scope > td:nth-of-type(3) > span')) != null
				&& /\b((?:\d+:)?\d+:\d+)\b(?:\s*\/\s*(\d+)\s*(?:BPM)\b)?/i.test(ref.textContent)) {
			duration = timeStringToTime(RegExp.$1);
			if (!trackIdentifiers.BPM) trackIdentifiers.BPM = parseInt(RegExp.$2);
		  } else duration = undefined;
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: trackMeta.release ? trackMeta.release.name : album,
			release_date: trackMeta.releaseDate || releaseDate || trackMeta.publishDate,
			label: trackMeta.label ? trackMeta.label.name : label,
			catalog: catalogue,
			media: media,
			genre: (trackMeta.genres ? trackMeta.genres.map(genre => genre.name)
				: Array.from(tr.querySelectorAll('span.genreList > a'))
					.map(a => a.title || a.textContent.trim())).join('; ') || undefined,
			track_number: parseInt(tr.dataset.index) || tr.dataset.index
				|| ((ref = tr.querySelector('div.playColumn > span')) != null ?
					parseInt(ref.textContent) || ref.textContent.trim() : undefined),
			total_tracks: trs.length,
			title: title,
			track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
				trackArtist : undefined,
			remixers: trackMeta.artists ?
				trackMeta.artists.filter(artist => artist.type == 'remixer').map(artist => artist.name) : undefined,
			duration: trackMeta.lengthMs ? trackMeta.lengthMs / 1000 : duration,
			description: description,
			url: response.finalUrl,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('beatport.com')) return globalXHR(url).then(function(response) {
		if (/\/release\/(?:\d\/)?(?:\S+-)?(\d+)\b/i.test(response.finalUrl)) identifiers.BEATPORT_ID = RegExp.$1;
		artist = Array.from(response.document.querySelectorAll('span > a[data-artist]')).map(node => node.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div > h1')) != null) album = ref.textContent.trim();
		response.document.querySelectorAll('ul > li > span.category').forEach(function(span) {
		  if (/^(?:Release\s+Date)/i.test(span.textContent)) releaseDate = span.nextElementSibling.textContent.trim();
		  if (/^(?:Label)/i.test(span.textContent)) label = span.nextElementSibling.textContent.trim();
		  if (/^(?:Catalog)/i.test(span.textContent)) catalogue = span.nextElementSibling.textContent.trim();
		});
		getDescription(response, 'div.interior-expandable', true);
		if ((ref = response.document.querySelector('div > img.interior-release-chart-artwork')) != null) imgUrl = ref.src;
		trs = response.document.querySelectorAll('div.tracks > ul > li.track');
		return Array.from(trs).map(function(tr) {
		  trackIdentifiers = { TRACK_ID: parseInt(tr.dataset.ecId) || tr.dataset.ecId };
		  title = (ref = tr.querySelector('span.buk-track-primary-title')) != null ?
			ref.title || ref.textContent.trim() : tr.dataset.ecName;
		  if (title && (ref = tr.querySelector('span.buk-track-remixed')) != null) title += ' (' + ref.textContent.trim() + ')';
		  trackArtist = Array.from(tr.querySelectorAll('p.buk-track-artists > a')).map(a => a.textContent.trim());
		  if ((ref = tr.querySelector('p.buk-track-bpm')) != null) trackIdentifiers.BPM = parseInt(ref.textContent);
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			label: tr.dataset.ecBrand || ((ref = tr.querySelector('p.buk-track-labels')) != null ? ref.textContent.trim() : label),
			catalog: catalogue,
			codec: format,
			media: media,
			genre: Array.from(tr.querySelectorAll('p.buk-track-genre > a')).map(a => a.textContent).join('; '),
			track_number: tr.dataset.ecPosition || ((ref = tr.querySelector('div.buk-track-num')) != null ?
				ref.textContent.trim() : undefined),
			total_tracks: trs.length,
			title: title,
			track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
				trackArtist : undefined,
			remixers: Array.from(tr.querySelectorAll('p.buk-track-remixers > a')).map(a => a.textContent.trim()),
			duration: (ref = tr.querySelector('p.buk-track-length')) != null ? timeStringToTime(ref.textContent) : undefined,
			description: description,
			url: !identifiers.BEATPORT_ID ? response.finalUrl : undefined,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('traxsource.com')) return globalXHR(url).then(function(response) {
		if (/\/title\/(\d+)(?=\/|$)/i.test(response.finalUrl)) identifiers.TRAXSOURCE_ID = RegExp.$1;
		artist = Array.from(response.document.querySelectorAll('h1.artists > a.com-artists')).map(node => node.textContent.trim());
		if (artist.length <= 0 && (ref = response.document.querySelector('h1.artists')) != null) artist = [ref.textContent.trim()];
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('h1.title')) != null) album = ref.textContent.trim();
		if ((ref = response.document.querySelector('a.com-label')) != null) label = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.cat-rdate')) != null && /^(.*)\s*\|\s*(.*)$/.test(ref.textContent.trim())) {
		  catalogue = RegExp.$1;
		  releaseDate = normalizeDate(RegExp.$2);
		}
		getDescription(response, 'div.desc', true);
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null) imgUrl = ref.content;
		trs = response.document.querySelectorAll('div.trklist > div.trk-row');
		return Array.from(trs).map(function(tr) {
		  trackIdentifiers = {};
		  title = (ref = tr.querySelector('div.title > a')) != null && ref.textContent.trim() || undefined;
		  if (title && (ref = tr.querySelector('span.version')) != null ) {
			if (ref.firstChild.nodeType == Node.TEXT_NODE
				&& (i = ref.firstChild.wholeText.trim()).length > 0) title += ' (' + i + ')';
		  }
		  trackArtist = Array.from(tr.querySelectorAll('div.artists a.com-artists')).map(a => a.textContent.trim());
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			media: media,
			genre: Array.from(tr.querySelectorAll('div.genre > a')).map(a => a.textContent.trim()).join('; '),
			track_number: (ref = tr.querySelector('div.tnum')) != null ? ref.textContent.trim() : undefined,
			total_tracks: trs.length,
			title: title,
			track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
				trackArtist : undefined,
			remixers: Array.from(tr.querySelectorAll('div.artists a.com-remixers')).map(a => a.textContent.trim()),
			duration: (ref = tr.querySelector('span.duration')) != null ? timeStringToTime(ref.textContent) : undefined,
			url: !identifiers.TRAXSOURCE_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  };
		});
	  }); else if (url.hostname.endsWith('music.apple.com')) return loadItunesMetadata(url).then(function(metadata) {
		identifiers.APPLE_ID = parseInt(metadata.id) || metadata.id;
		isVA = vaParser.test(metadata.attributes.artistName);
		if (/\s+-\s+(?:Single)$/.test(album = metadata.attributes.name)) {
		  album = RegExp.leftContext;
		  identifiers.RELEASETYPE = 'Single';
		}
		genres = metadata.attributes.genreNames.filter(genre => genre != 'Music');
		label = metadata.attributes.recordLabel;
		if (!label) label = metadata.attributes.copyright.replace(/^((?:[©℗]|\([PC]\))\s+)?(?:(\d{4})\s+)?/i, '');
		//identifiers.EXPLICIT = Number(/^(?:explicit)$/i.test(metadata.attributes.contentRating));
		if ('isCompilation' in metadata.attributes) identifiers.COMPILATION = Number(metadata.attributes.isCompilation);
		if (metadata.attributes.isSingle) identifiers.RELEASETYPE = 'Single';
		if (metadata.description) description = html2php(metadata.description, metadata.attributes.url).collapseGaps();
		if (!description && metadata.attributes.editorialNotes)
		  description = html2php(domParser.parseFromString(metadata.attributes.editorialNotes.standard
			|| metadata.attributes.editorialNotes.short, 'text/html').body, metadata.attributes.url).replace(/\n/g, '\n\n')
			.collapseGaps();
		if (description && !description.includes('[/quote]')) description = '[quote]' + description + '[/quote]';
		//if (description && !description.includes('[quote]')) description = '[quote]' + description.collapseGaps() + '[/quote]';
		if (metadata.attributes.artwork && prefs.apple_offer_alt_cover)
		  addMessage(new HTML('<a href="' + metadata.attributes.artwork.realUrl +
			'" target="_blank" style="' + hyperlinkStyle + '">alternate cover URL</a>'), 'info');
		return metadata.relationships.tracks.data.filter(track => track.type == 'songs').map(function(track) {
		  trackIdentifiers = {
			TRACK_ID: parseInt(track.id),
			ISRC: track.attributes.isrc,
			EXPLICIT: Number(/^(?:explicit)$/i.test(track.attributes.contentRating)),
			HASLYRICS: Number(track.attributes.hasLyrics || false),
		  };
		  var trackGenres = track.attributes.genreNames.filter(genre => genre != 'Music');
		  return {
			artist: isVA ? VA : metadata.attributes.artistName,
			artists: metadata.relationships.artists.data.map(artist => artist.attributes.name),
			album: album,
			release_date: metadata.attributes.releaseDate,
			label: label,
			media: media,
			genre: (trackGenres.length > 0 ? trackGenres : genres).join('; '),
			disc_number: track.attributes.discNumber,
			disc_subtitle: track.attributes.workName,
			track_number: track.attributes.trackNumber,
			total_tracks: metadata.attributes.trackCount,
			title: track.attributes.name,
			track_artist: track.attributes.artistName
				&& (isVA || !artistsMatch(track.attributes.artistName, metadata.attributes.artistName)) ?
					track.attributes.artistName : undefined,
			composer: track.attributes.composerName,
			duration: track.attributes.durationInMillis / 1000 || undefined,
			description: description,
			url: !identifiers.APPLE_ID ? metadata.attributes.url : undefined,
			identifiers: mergeIds(),
			//cover_url: metadata.attributes.artwork ? metadata.attributes.artwork.realUrl : undefined,
		  };
		});
	  }); else if (url.hostname.endsWith('musicbrainz.org')) {
		const entities = [
		  'aliases', 'annotation', 'artist-credits', 'artists', 'collections', 'discids', 'genres',
		  'isrcs', 'labels', 'media', 'ratings', 'recordings', 'release-groups', 'tags', 'url-rels',
		];
		if (!mbrRlsParser.test(url)) return Promise.reject('Invalid MusicBrainz link - pick specific release');
		return queryMusicBrainzAPI('release/' + RegExp.$1, { inc: entities.join('+') }).then(function(release) {
		  if (release.error) return Promise.reject(release.error);
		  if (prefs.diag_mode) console.debug('MusicBrainz release metadata received:', release);
		  if (release.id) identifiers.MBID = release.id;
		  if (release.barcode) identifiers.BARCODE = release.barcode;
		  if (release.asin) identifiers.ASIN = release.asin;
		  if (release['release-group']['primary-type']) identifiers.RELEASETYPE = release['release-group']['primary-type'];
		  if (release['text-representation']) identifiers.LANGUAGE = release['text-representation'].language;
		  artist = Array.isArray(release['artist-credit']) ? release['artist-credit'].map(artist => artist.name) : [];
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (Array.isArray(release.genres)) genres = release.genres.map(genre => genre.name);
		  if (Array.isArray(release.tags)) Array.prototype.push.apply(genres, release.tags.map(tag => tag.name));
		  if (genres.length <= 0) {
			if (Array.isArray(release['release-group'].genres)) {
			  Array.prototype.push.apply(genres, release['release-group'].genres.map(tag => tag.name));
			}
			if (Array.isArray(release['release-group'].tags)) {
			  Array.prototype.push.apply(genres, release['release-group'].tags.map(tag => tag.name));
			}
		  }
		  label = release['label-info'].map(label => label.label.name);
		  catalogue = release['label-info'].map(label => label['catalog-number']);
		  if (release['release-group'].status && !/^(?:Official)$/i.test(release['release-group'].status))
			addMessage('Not an official release (' + release['release-group'].status + ')', 'warning');
		  release.media.forEach(function(medium, ndx) {
			medium.tracks.forEach(function(track, ndx) {
			  trackIdentifiers = { TRACK_ID: track.id };
			  if (Array.isArray(track['artist-credit'])) {
				trackArtist = track['artist-credit'].map(artist => artist.name);
				trackArtist = trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist));
			  } else trackArtist = false;
			  tracks.push({
				artist: isVA ? VA : undefined,
				artists: !isVA ? artist : undefined,
				album: /*release['release-group'].title || */release.title,
				album_year: extractYear(release['release-group']['first-release-date']),
				release_date: release.date,
				genre: genres.join('; '),
				label: label.filter(label => label).join(' / '),
				catalog: catalogue.filter(catno => catno).join(' / '),
				media: medium.format,
				disc_number: medium.position,
				disc_subtitle: medium.title,
				total_discs: release.media.length,
				track_number: track.number,
				title: track.title,
				track_artist: trackArtist ?
					track['artist-credit'].map(artist => artist.name + artist.joinphrase).join('') : undefined,
				duration: track.length != null ? track.length / 1000 : undefined,
				//country: release.country,
				description: release.annotation,
				identifiers: mergeIds(),
			  });
			});
		  });
		  return tracks;
		});
	  } else if (url.hostname.endsWith('vgmdb.net')) return globalXHR(url).then(function(response) {
		if (/\/album\/(\d+)(?=\/|$)/i.test(response.finalUrl)) identifiers.VGMDB_ID = RegExp.$1;
		if ((ref = response.document.querySelector('h1 > span.albumtitle[style="display:inline"]')) != null) {
		  album = ref.innerText.trim();
		  if (ref.lang == 'en'
				&& (ref = response.document.querySelector('div > span.albumtitle[style="display:inline"]')) != null
				&& ref.firstChild != null && ref.firstChild.nodeType == Node.TEXT_NODE)
			album += ' (' + ref.firstChild.wholeText.trim() + ')';
		}
		composer = [];
		response.document.querySelectorAll('table#album_infobit_large > tbody > tr > td > span.label > b').forEach(function(key) {
		  var value = key.parentNode.parentNode.nextElementSibling;
		  switch (key.innerText.trim().toLowerCase()) {
			case 'catalog number':
			  catalogue = value.textContent.trim().replace(/\s*\([^\(\)]+\)$/, '');
			  break;
			case 'release date':
			  if (value.firstElementChild != null) releaseDate = value.firstElementChild.innerText.trim();
			  break;
			case 'media format':
			  media = value.textContent.trim();
			  break;
			case 'classification':
			  genres = value.textContent.trim().split(/\s*,\*/);
			  break;
			case 'published by':
			  label = Array.from(value.querySelectorAll('a > span.productname:first-of-type'))
				.map(span => span.innerText.trim()).join(' / ');
			  break;
			case 'composed by':
			case 'lyrics by':
			  getArtists(value).forEach(artist => { composer.pushUniqueCaseless(artist) });
			  break;
			case 'performed by':
			  artist = getArtists(value);
			  break;
			case 'arranged by':
			  var arrangers = getArtists(value);
			  break;
		  }
		});
		if (!artist || artist.length <= 0) artist = composer;
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		genres.pushUniqueCaseless('Soundtrack');
		response.document.querySelectorAll('td#rightcolumn > div > div > div > b.label').forEach(function(key) {
		  var value = key.parentNode.lastChild;
		  if (key.innerText.toLowerCase() == 'category' && value != null)
			genres.pushUniqueCaseless(value.textContent.trim());
		});
		getDescription(response, 'div#notes', false);
		if ((ref = response.document.querySelector('div#coverart')) != null
		   && /\burl\s*\(\"(.*)"\)/i.test(ref.style['background-image'])) imgUrl = RegExp.$1;
		response.document.querySelectorAll('div#tracklist > span > span > b').forEach(function(node) {
		  discSubtitle = node.innerText.trim();
		  guessDiscNumber();
		  node = node.parentNode;
		  while (node != null && node.nodeName != 'TABLE') node = node.nextElementSibling;
		  if (node != null) addVolume(node);
		});
		var tl = Array.from(response.document.querySelectorAll('ul#tlnav > li > a'));
		if (tl.length <= 1) return tracks;
		if ((i = tracks.length / tl.length) != Math.floor(i)) {
		  console.warn('Unexpected vgmdb.net tracklist length:', i, tracks);
		  return tracks;
		}
		let enIndex = tl.findIndex(l => /^(?:English)\b/i.test(l.innerText.trim()));
		if (enIndex < 0) enIndex = tl.findIndex(l => /^(?:Romaji)\b/i.test(l.innerText.trim()));
		if (enIndex < 0) return tracks.slice(0, i);
		let jpIndex = tl.findIndex(l => /^(?:Japanese)\b/i.test(l.innerText.trim()));
		if (jpIndex < 0) jpIndex = enIndex > 0 ? 0 : 1;
		return tracks.slice(enIndex * i, (enIndex + 1) * i).map(function(track, ndx) {
		  const rx = /^(.+?)(?:\s+\(([^\(\)]+)\))?$/;
		  if (!track.title) track.title = tracks[jpIndex * i + ndx].title;
		  else if ((jpTitle = tracks[jpIndex * i + ndx].title) != track.title) {
			track.title += ' (';
			var enTitle = rx.exec(track.title), jpTitle = rx.exec(jpTitle);
			if (jpTitle[1] != enTitle[1]) {
			  track.title += jpTitle[1];
			  if (jpTitle[2] && jpTitle[2] != enTitle[2]) track.title += ' (' + jpTitle[2] + ')';
			} else track.title += jpTitle[2];
			track.title += ')';
		  }
		  return track;
		});

		function addVolume(node) {
		  Array.prototype.push.apply(tracks, Array.from(node.querySelectorAll('tbody > tr')).map(tr => ({
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			//album_year: extractYear(releaseDate),
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			media: media,
			genre: genres.join('; '),
			disc_number: discNumber,
			//total_discs: totalDiscs,
			disc_subtitle: discSubtitle,
			track_number: (ref = tr.querySelector('span.label')) != null ? parseInt(ref.innerText) : undefined,
			//total_tracks: trs.length,
			title: tr.children[1].innerText.trim(),
			//track_artist: joinArtists(trackArtist),
			composers: composer,
			duration: (ref = tr.querySelector('span.time')) != null ? timeStringToTime(ref.innerText) : undefined,
			url: !identifiers.VGMDB_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  })));
		}

		function getArtists(node) {
		  var artists = [];
		  node.childNodes.forEach(function(node) {
			switch (node.nodeType) {
			  case Node.ELEMENT_NODE:
				if ((i = node.querySelectorAll('span.artistname')).length > 0) {
				  var artist = i[0].innerText.trim();
				  if (i.length > 1 && i[0].lang == 'en') artist += ' (' + i[1].innerText.trim() + ')';
				} else artist = node.innerText.trim();
				if (artist) artists.push(artist);
				break;
			  case Node.TEXT_NODE:
				artist = node.wholeText.trim().replace(/^\s*,\s*|\s*,\s*$/g, '');
				if (/^[\(\)]+$/.test(artist)) return;
				if (artist) Array.prototype.push.apply(artists, artist.split(/\s*,\s*/));
				break;
			}
		  });
		  return artists;
		}
	  }); else if (url.hostname.endsWith('tidal.com')) {
		function getArtists(root, type = 'MAIN') {
		  if (type) type = type.toUpperCase(); else return [];
		  return Array.isArray(root.artists) ? root.artists
			.filter(artist => (artist.type || 'MAIN').toUpperCase() == type).map(artist => artist.name) : [];
		}

		if ((matches = /\/album\/(\d+)\b/i.exec(url.pathname) || /\b(?:albumId)=(\d+)\b/i.exec(url.search)) == null)
		  return Promise.reject('Fetching from this page is not supported');
		return Promise.all([
		  queryTidalAPI('pages/album', { albumId: matches[1] }),
		  queryTidalAPI('albums/' + matches[1]),
		  queryTidalAPI('albums/' + matches[1] + '/tracks', { limit: 9999 }),
		]).then(function(metadata) {
		  function findModule(type) {
			for (let row of metadata[0].rows) {
			  var result = row.modules.find(module => module.type == type);
			  if (result != undefined) return result;
			}
			return null;
		  }

		  if (prefs.diag_mode) console.debug('Tidal metadata loaded:', metadata);
		  identifiers.TIDAL_ID = metadata[1].id;
		  artist = getArtists(metadata[1], 'MAIN');
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  let albumGuests = getArtists(metadata[1], 'FEATURED');
		  identifiers.RELEASETYPE = metadata[1].type;
		  if (metadata[1].upc) identifiers.BARCODE = metadata[1].upc;
		  if (/^(?:(?:\([PC]\)|©|℗)\s+)?(?:(\d{4})\s+)?(.*)/.test(metadata[1].copyright)) {
			//if (RegExp.$1) albumYear = parseInt(RegExp.$1);
			label = RegExp.$2;
		  }
		  let albumHeader = findModule('ALBUM_HEADER');
		  if (albumHeader != null) {
			description = albumHeader.description;
			if (albumHeader.review.text) {
			  if (description) description += '\n\n';
			  if (!albumHeader.review.source) description += '[b]Album Review[/b]\n\n';
			  description += '[quote';
			  if (albumHeader.review.source) description += '=Album review from ' + albumHeader.review.source;
			  description += ']' + albumHeader.review.text + '[/quote]';
			  description = description
				.replace(/\[wimpLink\s+artistId="(\d+)"\]/g, '[url=https://listen.tidal.com/artist/$1]')
				.replace(/\[wimpLink\s+albumId="(\d+)"\]/g, '[url=https://listen.tidal.com/album/$1]')
				.replace(/\[\/wimpLink\]/g, '[/url]');
			}
			if (Array.isArray(albumHeader.credits.items) && albumHeader.credits.items.length > 0) {
			  let ac = '';
			  albumHeader.credits.items.forEach(function(credit) {
				if (/^Primary Artist$/i.test(credit.type)) return;
// 				if (/^Record label$/i.test(credit.type)) {
// 				  label = credit.contributors.map(contributor => contributor.name).join(' / ');
// 				  return;
// 				}
				ac += '\n' + credit.type + ' – ' + joinArtists(credit.contributors.map(contributor =>
				  !contributor.id ? contributor.name :
					  '[url=https://listen.tidal.com/artist/' + contributor.id + ']' + contributor.name + '[/url]'));
			  });
			  if (ac.length > 0) {
				if (description) {
				  if (!albumHeader.review.text) description += '\n';
				  description += '\n';
				}
				description += '[b]Additional Credits[/b]\n' + ac;
			  }
			}
		  }
		  if (metadata[1].cover) imgUrl = 'https://resources.tidal.com/images/' +
			metadata[1].cover.replace(/-/g, '/') + '/1280x1280.jpg';
		  let albumItems = findModule('ALBUM_ITEMS'), channels;
		  return metadata[2].items.map(function(track, index) {
			trackIdentifiers = { TRACK_ID: track.id };
			if ('explicir' in track) trackIdentifiers.EXPLICIT = Number(track.explicit);
			if ('isrc' in track) trackIdentifiers.ISRC = track.isrc;
			trackArtist = [getArtists(track, 'MAIN'), getArtists(track, 'FEATURED')];
			if (trackArtist[0].length > 0 && !isVA && artistsMatch(trackArtist, [artist, albumGuests]))
			  trackArtist = undefined;
			let remixers = getArtists(track, 'REMIXER');
			channels = undefined;
			track.audioModes.forEach(function(audioMode) {
			  switch (audioMode.toLowerCase()) {
				case 'stereo': channels = 2; break;
				default: if (/\b(\d+)\.(\d+)\b/.test(audioMode)) channels = parseInt(RegExp.$1) + parseInt(RegExp.$2);
			  }
			});
			return {
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  featured_artists: albumGuests.length > 0 ? albumGuests : undefined,
			  album: metadata[1].title,
			  album_year: albumYear,
			  release_date: metadata[1].releaseDate,
			  label: label,
			  media: media,
			  disc_number: track.volumeNumber,
			  total_discs: metadata[1].numberOfVolumes,
			  //disc_subtitle: discSubtitle,
			  track_number: track.trackNumber,
			  total_tracks: metadata[1].numberOfTracks,
			  title: track.title,
			  track_artists: trackArtist && trackArtist[0].length > 0 ? trackArtist[0] : undefined,
			  track_guests: trackArtist && trackArtist[1].length > 0 ? trackArtist[1] : undefined,
			  remixers: remixers.length > 0 ? remixers : undefined,
			  encoding: ['HI_RES', 'LOSSLESS'].includes(track.audioQuality) ? 'lossless' : undefined,
			  duration: track.duration,
			  channels: channels,
			  track_gain: 'replayGain' in track ? track.replayGain.toString() + ' dB' : undefined,
			  track_peak: 'peak' in track ? track.peak : undefined,
			  description: description,
			  url: !identifiers.TIDAL_ID && metadata[1].url || undefined,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  });
		});
	  } else if (url.hostname.endsWith('ototoy.jp')) return globalXHR(url).then(function(response) {
		if (/\/p\/(\d+)(?=\/|\?|$)/i.test(response.finalUrl)) identifiers.OTOTOY_ID = parseInt(RegExp.$1);
		artist = Array.from(response.document.querySelectorAll('span.album-artist > *'))
		  .map(node => node.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('h1.album-title')) != null) album = ref.textContent.trim();
		if ((ref = response.document.querySelector('p.hqd-logo > span')) != null && (matches = /^(?:Audio\s+Format)\s*:\s*(.+)$/i.exec(ref.textContent.trim())) != null) {
		  if (/\b(\d+)[\s\-]?bit\s*\b/i.test(matches[1])) bitdepth = parseInt(RegExp.$1);
		  if (/\b(\d+(?:\.\d+)?)\s*kHz\b/i.test(matches[1])) samplerate = parseFloat(RegExp.$1) * 1000;
		}
		if (bitdepth >= 16) encoding = 'lossless';
		if ((ref = response.document.querySelector('p.hqd-logo > a.lossless')) != null) encoding = 'lossless';
		if ((ref = response.document.querySelector('p.release-day')) != null && /\b(\d{4})-(\d{2})-(\d{2})\b/.test(ref.textContent))
		  releaseDate = RegExp.lastMatch;
		label = Array.from(response.document.querySelectorAll('p.label-name > a')).map(a => a.textContent.trim()).join(' / ');
		if ((ref = response.document.querySelector('p.catalog-id')) != null && /\b(?:Catalog\s+number):\s*(.*)$/i.test(ref.textContent.trim()))
		  catalogue = RegExp.$1;
		genres = Array.from(response.document.querySelectorAll('ul.tag-cloud > li > a.oty-btn-tag'))
		  .map(a => a.textContent.trim()).filter(genre => genre.length > 0);
		getDescription(response, 'div.album-addendum > div.addendum-box', false);
		if ((ref = response.document.querySelector('div#jacket-full-wrapper > img')) != null) imgUrl = ref.dataset.src || ref.src;
		trs = response.document.querySelectorAll('table#tracklist > tbody > tr[class^="bg"]');
		return Array.from(trs).map(function(tr, ndx) {
		  trackIdentifiers = {};
		  title = (ref = tr.querySelector('td.item > span[id^="title-"]')) != null ? ref.textContent.trim() : undefined;
		  if (ref != null && /^title-(\d+)$/.test(ref.id)) trackIdentifiers.TRACK_ID = parseInt(RegExp.$1);
		  trackArtist = Array.from(tr.querySelectorAll('td.item > span > a.artist')).map(a => a.textContent.trim());
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			album_year: extractYear(releaseDate),
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			media: media,
			genre: genres.join('; '),
			disc_number: discNumber,
			track_number: ndx + 1,
			total_tracks: trs.length,
			samplerate: samplerate || undefined,
			bitdepth: bitdepth,
			encoding: encoding,
			title: title,
			track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
				trackArtist : undefined,
			duration: (ref = tr.querySelector(':scope > td.item:nth-of-type(3)')) != null ? timeStringToTime(ref.textContent) : undefined,
			description: description,
			url: !identifiers.OTOTOY_ID ? response.finalUrl : undefined,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('music.yandex.ru') && (/\/album\/(\d+)\b/i.test(url.pathname)
			|| /\b(?:album)=(\d+)\b/i.test(url.search))) return globalXHR('https://music.yandex.ru/handlers/album.jsx?album=' + RegExp.$1, { responseType: 'json' }).then(function(response) {
		if (prefs.diag_mode) console.debug('Yandex Music metadata received:', response.response);
		if (response.response.metaType && response.response.metaType != 'music') throw 'Not a music release';
		identifiers.YANDEX_ID = response.response.id;
		if (response.response.type) identifiers.RELEASETYPE = response.response.type;
		artist = response.response.artists.filter(artist => !artist.composer).map(artist => artist.name);
		composer = response.response.artists.filter(artist => artist.composer).map(artist => artist.name);
		isVA = response.response.artists.length <= 0
			|| response.response.artists.length == 1 && response.response.artists.some(artist => artist.various);
		album = response.response.title;
		if (response.response.version) album += ' (' + response.response.version + ')';
		response.response.volumes.forEach(function(volume, discNumber) {
		  Array.prototype.push.apply(tracks, volume.filter(track => track.type == 'music').map(function(track, trackNumber) {
			trackIdentifiers = { TRACK_ID: parseInt(/*track.realId || */track.id) };
			title = track.title;
			if (track.version) title += ' (' + track.version + ')';
			trackArtist = track.artists.filter(artist => !artist.composer).map(artist => artist.name);
			var trackComposer = track.artists.filter(artist => artist.composer).map(artist => artist.name);
			return {
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: album,
			  album_year: response.response.year,
			  release_date: response.response.releaseDate.replace(/T.*$/, ''),
			  label: response.response.labels.map(label => label.name).join(' / '),
			  media: media,
			  genre: response.response.genre,
			  track_number: trackNumber + 1,
			  total_tracks: response.response.trackCount,
			  composers: trackComposer.length > 0 ? trackComposer : composer,
			  disc_number: discNumber + 1,
			  total_discs: response.response.volumes.length,
			  title: title,
			  track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
			  	trackArtist : undefined,
			  duration: track.durationMs / 1000,
			  track_gain: track.normalization ? track.normalization.gain.toString() + ' dB' : undefined,
			  track_peak: track.normalization ? track.normalization.peak : undefined,
			  cover_url: 'https://' + response.response.coverUri.replace('/%%', '/m1000x1000'),
			  identifiers: mergeIds(),
			};
		  }));
		});
		return tracks;
	  }); else if (url.hostname.endsWith('mora.jp') ) return loadMoraMetadata(url).then(function(packageMeta) {
		if (prefs.diag_mode) console.debug('Mora.jp metadata loaded:', packageMeta);
		if ([7].includes(packageMeta.mediaType)) throw 'Not music release (' + packageMeta.mediaType + ')';
		artist = fmtKanaProp(packageMeta, 'artistName');
		isVA = vaParser.test(artist);
		album = fmtKanaProp(packageMeta, 'title');
		if (packageMeta.bitPerSample) bitdepth = parseInt(packageMeta.bitPerSample);
		if (packageMeta.samplingFreq) samplerate = parseInt(packageMeta.samplingFreq);
		if (packageMeta.channelConf) channels = parseInt(packageMeta.channelConf);
		if (packageMeta.materialNo) identifiers.MORA_ID = parseInt(packageMeta.materialNo);
		if (packageMeta.msin) identifiers.MSIN = packageMeta.msin;
		if (packageMeta.distPartNo) identifiers.DISTPARTNO = packageMeta.distPartNo;
		if (packageMeta.fullsizeimage) imgUrl = packageMeta.packageUrl + packageMeta.fullsizeimage;
		return packageMeta.trackList.map(function(track) {
		  trackIdentifiers = { TACK_ID: track.musicId, MSIN: track.msin, DISTPARTNO: track.distPartNo };
		  if (track.labelId) trackIdentifiers.LABEL_ID = track.labelId;
		  trackArtist = fmtKanaProp(track, 'artistName');
		  composer = fmtKanaProp(track, 'composer');
		  var trackLyricist = fmtKanaProp(track, 'lyrics');
		  if (trackLyricist) if (composer) composer += ' / ' + trackLyricist; else composer = trackLyricist;
		  switch (track.mediaFormatNo) {
			case 10: format = 'AAC'; encoding = 'lossy'; var codecProfile = 'AAC-LC'; bitrate = 320; break;
			//case 11: format = 'FLAC'; encoding = 'lossless'; codecProfile = undefined; bitrate = undefined; break;
			case 12: format = 'FLAC'; encoding = 'lossless'; codecProfile = undefined; bitrate = undefined; break;
			case 13: format = 'DSD'; encoding = 'lossless'; codecProfile = undefined; bitrate = undefined; break;
			default: format = undefined; encoding = undefined; codecProfile = undefined; bitrate = undefined;
		  }
		  return {
			artist: isVA ? VA : artist,
			album: album,
			//album_year: extractYear(releaseDate),
			release_date: packageMeta.dispStartDate || packageMeta.dispStartDateStr || packageMeta.startDate,
			label: packageMeta.labelcompanyname || packageMeta.displayLabelname || packageMeta.labelname,
			catalog: packageMeta.cdPartNo/* || packageMeta.packageId */|| packageMeta.distPartNo,
			media: media,
			genre: genres.join('; '),
			codec: format,
			codec_profile: codecProfile,
			encoding: encoding,
			bitrate: /*track.bitPerSample * 1000 || */bitrate,
			bitdepth: parseInt(track.bitPerSample) || bitdepth,
			samplerate: parseInt(track.samplingFreq) || samplerate,
			channels: parseInt(track.channelConf) || channels,
			track_number: track.trackNo,
			total_tracks: packageMeta.trackList.length,
			composer: composer,
			producer: fmtKanaProp(track, 'producer'),
			arranger: fmtKanaProp(track, 'arranger'),
			title: fmtKanaProp(track, 'title'),
			track_artist: trackArtist && (isVA || !artistsMatch(trackArtist, artist)) ? trackArtist : undefined,
			duration: track.duration,
			description: packageMeta.metaDescription,
			url: packageMeta.webUrl,
			cover_url: imgUrl,
			identifiers: mergeIds(),
			master: packageMeta.master,
		  };
		});

		function fmtKanaProp(obj, propName) {
		  var result = (obj[propName] || '').trim(), kana = (obj[propName + 'Kana'] || '').trim();
		  if (kana && prefs.use_kana) if (result) result += ' (' + kana + ')'; else result = kana;
		  return result || undefined;
		}
	  }); else if (url.hostname.endsWith('allmusic.com') && url.pathname.startsWith('/album/')) {
		return globalXHR(url.href.replace(/\b(m[wr]\d{10})\b.+$/, '$1')).then(function(response) {
		  ref = response.document.querySelector('section.main-album a.album-title');
		  var mainAlbum = (ref != null ? globalXHR(ref.href).then((response, ref) => ({
			artist: Array.from(response.document.querySelectorAll('h2[class$="album-artist"] > span[itemprop="name"]'))
			  .map(span => span.textContent.trim()),
			album: (ref = response.document.querySelector('h1.album-title')) != null ? ref.textContent.trim() : undefined,
			albumYear: (ref = response.document.querySelector('div.release-date > span')) != null ?
			  new Date(ref.textContent).getFullYear() || parseInt(ref.textContent) : undefined,
			genres: Array.from(response.document.querySelectorAll('div.genre a')).map(a => a.textContent.trim()),
			styles: Array.from(response.document.querySelectorAll('div.styles a')).map(a => a.textContent.trim()),
			coverUrl: (ref = response.document.querySelector('meta[property="og:image"]')) != null ?
			  ref.content.replace(/\bf=\d+\b/, 'f=0') : undefined,
			id: /\b(mw\d{10})\b/.test(response.finalUrl) && RegExp.$1 || undefined,
		  })) : Promise.reject(null)).catch(reason => ({}));
		  var _credits = { mainArtists: [], featured: [], credits: {} };
		  var credits = globalXHR(response.finalUrl + '/credits').then(function(response) {
			response.document.querySelectorAll('section.credits > table > tbody > tr').forEach(function(tr) {
			  var name = tr.children[0].textContent.trim(), role = tr.children[1].textContent.trim();
			  if (role == 'Primary Artist') _credits.mainArtists.push(name);
				  else if (role == 'Featured Artist') _credits.featured.push(name);
					  else _credits.credits[name] = role;
			});
			return _credits;
		  }).catch(reason => _credits);
		  if (/\b(m[wr]\d{10})\b/.test(response.finalUrl)) identifiers.ALLMUSIC_ID = RegExp.$1;
		  artist = Array.from(response.document.querySelectorAll('h2[class$="-artist"] > span[itemprop="name"]'))
			.map(span => span.textContent.trim());
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  album = (ref = response.document.querySelector('h1.release-title')
			  || response.document.querySelector('h1.album-title')) != null ? ref.textContent.trim() : undefined;
		  albumYear = (ref = response.document.querySelector('div.year')) != null ? parseInt(ref.textContent) : undefined;
		  ref = response.document.querySelector('div.release-date > span');
		  if (identifiers.ALLMUSIC_ID && identifiers.ALLMUSIC_ID.startsWith('mr')) {
			releaseDate = ref.textContent.trim();
		  } else if (identifiers.ALLMUSIC_ID && identifiers.ALLMUSIC_ID.startsWith('mw')) {
			albumYear = new Date(ref.textContent).getFullYear() || parseInt(ref.textContent) || albumYear;
		  }
		  label = Array.from(response.document.querySelectorAll('div.label a')).map(a => a.textContent.trim()).join(' / ');
		  catalogue = (ref = response.document.querySelector('div.catalog-number > span')) != null ? ref.textContent.trim() : undefined;
		  if ((ref = response.document.querySelector('div.format > span')) != null) media = ref.textContent.trim();
		  genres = Array.from(response.document.querySelectorAll('div.genre a')).map(a => a.textContent.trim());
		  var styles = Array.from(response.document.querySelectorAll('div.styles a')).map(a => a.textContent.trim());
		  getDescription(response, 'section.review', false);
		  var releaseInfo = [];
		  if ((ref = response.document.querySelector('div.recording-date > div')) != null)
			releaseInfo.push('Recording date: ' + ref.textContent.trim());
		  var locations = Array.from(response.document.querySelectorAll('div.recording-location > ul > li')).map(li => li.textContent.trim());
		  if (locations.length > 0) releaseInfo.push('Recording location: ' + locations.join(' / '));
		  locations = Array.from(response.document.querySelectorAll('div.release-info > ul > li')).map(li => li.textContent.trim());
		  if (locations.length > 0) releaseInfo.push('Release info: ' + locations.join(', '));
		  if (releaseInfo.length > 0) {
			if (description) description += '\n\n';
			description += releaseInfo.join('\n');
		  }
		  imgUrl = (ref = response.document.querySelector('meta[property="og:image"]')) != null ?
			ref.content.replace(/\bf=\d+\b/, 'f=0') : undefined;
		  trs = response.document.querySelectorAll('section.track-listing table > tbody > tr.track');
		  return Promise.all([mainAlbum, credits]).then(function(workers) {
			if (Object.keys(workers[1].credits).length > 0) {
			  if (description) description += '\n\n';
			  description = description + '[b]Credits:[/b]\n' + Object.keys(workers[1].credits)
				.map(artist => artist + ' - ' + workers[1].credits[artist]).join('\n');
			}
			return Array.from(trs).map(function(tr, ndx) {
			  trackArtist = Array.from(tr.querySelectorAll('td.performer div.primary > a')).map(a => a.textContent.trim());
			  var trackGuests = Array.from(tr.querySelectorAll('td.performer div.featuring > a')).map(a => a.textContent.trim());
			  var ta = trackArtist.length > 0 && (isVA || !artistsMatch([trackArtist, trackGuests], [artist]));
			  if ((ref = tr.querySelector('div.title > a')) != null && ref.dataset.tooltip) try {
				trackIdentifiers = { TRACK_ID: JSON.parse(ref.dataset.tooltip).id };
			  } catch(e) { trackIdentifiers = {} }
			  return {
				artist: isVA ? VA : undefined,
				artists: !isVA ? artist : undefined,
				album: album,
				release_date: releaseDate,
				album_year: workers[0].albumYear || albumYear,
				genre: (workers[0].genres || []).concat((workers[0].styles || []), genres, styles).join('; '),
				label: label,
				catalog: catalogue,
				media: media,
				disc_number: (ref = tr.parentNode.parentNode.parentNode.querySelector('h3')) != null
				  && /\b(?:Disc)\s+(\d+)\b/i.test(ref.textContent.trim()) ? parseInt(RegExp.$1) : undefined,
				disc_subtitle: (ref = tr.parentNode.querySelector('tr.performance-title')) != null ?
				  ref.textContent.trim() : undefined,
				track_number: (ref = tr.querySelector('td.tracknum')) != null ? ref.textContent.trim() : undefined,
				total_tracks: trs.length,
				title: (ref = tr.querySelector('div.title')) != null ? ref.textContent.trim() : undefined,
				track_artists: ta ? trackArtist : undefined,
				track_guests: ta ? trackGuests : undefined,
				composers: Array.from(tr.querySelectorAll('div.composer > *')).map(node => node.textContent.trim()) || undefined,
				duration: (ref = tr.querySelector('td.time')) != null && timeStringToTime(ref.textContent) || undefined,
				description: description || undefined,
				url: !identifiers.ALLMUSIC_ID ?
				  (ref = tr.querySelector('meta[property="og:url"]')) != null ? ref.content : response.finalUrl : undefined,
				cover_url: workers[0].coverUrl || imgUrl,
				identifiers: mergeIds(),
			  };
			});
		  });
		});
	  } else if (url.hostname.endsWith('bleep.com')) return globalXHR(url).then(function(response) {
		if (/\/release\/(\d+)/i.test(response.finalUrl)) identifiers.BLEEP_ID = parseInt(RegExp.$1);
		artist = Array.from(response.document.querySelectorAll('div.product-details dl > dd.artist > a'))
		  .map(a => a.title || a.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div.product-details dl > dd.release-title')) != null)
		  album = ref.textContent.trim();
		label = Array.from(response.document.querySelectorAll('div.product-details dl > dd.label > a'))
		  .map(a => a.title || a.textContent.trim()).join(' / ');
		if ((ref = response.document.querySelector('div.product-details dl > dd.catalogue-number')) != null)
		  catalogue = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.product-details dl > dd.product-release-date')) != null)
		  releaseDate = normalizeDate(ref.textContent.trim());
		genres = Array.from(response.document.querySelectorAll('ul.tag-list > li > a.tag'))
		  .map(a => a.textContent.trim()).filter(genre => !genre.startsWith('Album of'));
		getDescription(response, 'article[itemprop="description"]', false);
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
		  imgUrl = ref.content.replace(/\/r\/[a-z]\//i, '/r/');
		trs = response.document.querySelectorAll('ol#track-list > li.track');
		return Array.from(trs).map(function(tr, ndx) {
		  trackIdentifiers = {};
		  trackArtist = Array.from(tr.querySelectorAll('span.track-artist > a[itemprop="byArtist"]'))
			.map(a => a.title || a.textContent.trim());
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			genre: genres.join('; '),
			media: media,
			track_number: (ref = tr.querySelector('span.track-number')) != null ? parseInt(ref.textContent) : undefined,
			total_tracks: trs.length,
			title: (ref = tr.querySelector('span.track-name span[itemprop="name"]')) != null ?
				ref.textContent.trim() : undefined,
			track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
				trackArtist : undefined,
			duration: (ref = tr.querySelector('span.track-duration')) != null ?
				timeStringToTime(ref.textContent) : undefined,
			description: description,
			url: !identifiers.BLEEP_ID ? response.finalUrl : undefined,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('boomkat.com') && url.pathname.startsWith('/products/')) return globalXHR(url).then(function(response) {
		artist = Array.from(response.document.querySelectorAll('div#right_content > h1.detail--artists > a'))
		  .map(a => a.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div#right_content > h2.detail_album')) != null) album = ref.textContent.trim();
		genres = Array.from(response.document.querySelectorAll('div#right_content > div.product-note > span:last-of-type'))
		  .map(a => a.textContent.trim().replace(/^(?:Genre)\s*:\s*/i, ''));
		getDescription(response, response.document.querySelector('div.show-for-medium-up > div.product-review'), true);
		if ((ref = response.document.querySelector('img[itemprop="image"]')) != null)
		  imgUrl = ref.src.replace(/\/(?:large)\//i, '/original/');
		var m = /#v\d+/.exec(url);
		if (m == null) return Promise.reject('Use tab link for specific medium');
		if ((ref = response.document.querySelector('li.tab-title > a[href="' + m[0] + '"]')) != null) {
		  releaseDate = ref.dataset.releaseDate;
		  label = ref.dataset.label;
		  catalogue = ref.dataset.catalogueNumber;
		  switch (ref.textContent.trim()) {
			case 'FLAC': media = 'WEB'; encoding = 'lossless'; format = 'FLAC'; bitdepth = 16; break;
			case 'WAV': media = 'WEB'; encoding = 'lossless'; format = 'WAV'; bitdepth = 16; break;
			case 'MP3': media = 'WEB'; encoding = 'lossy'; format = 'MP3'; break;
			case 'CD': media = 'CD'; break;
			case 'Cassette': media = 'Cassette'; break;
			default:
			  if (/(?:LP)$/.test(ref.textContent)) media = 'Vinyl'; break;
		  }
		}
		if (media == 'WEB' && (ref = response.document.querySelector('div' + m[0] + ' p.product-extra-info')) != null
			&& /\b(\d+)\s+bit\s+audio\b/i.test(ref.textContent)) bitdepth = parseInt(RegExp.$1);
		if ((ref = response.document.querySelector('div' + m[0] + ' div.product-track-listing')) == null)
		  return Promise.reject('invalid media link');
		return globalXHR('https://boomkat.com/tracklist/' + ref.dataset.releaseFormatId).then(function(response) {
		  trs = response.document.querySelectorAll('div.tracklist > div.track > a.table-cell');
		  return Array.from(trs).map(function(tr, ndx) {
			trackIdentifiers = {
			  BOOMKAT_ID: parseInt(tr.dataset.audioPlayerRelease),
			  MEDIA_ID: parseInt(tr.dataset.audioPlayerReleaseFormat),
			  TRACK_ID: parseInt(tr.dataset.audioPlayerTrack),
			};
			trackArtist = tr.dataset.artist;
			return {
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: album,
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  genre: genres.join('; '),
			  media: media,
			  encoding: encoding,
			  codec: format,
			  bitdepth: bitdepth,
			  samplerate: samplerate,
			  track_number: ndx + 1,
			  total_tracks: trs.length,
			  title: tr.dataset.name,
			  track_artist: trackArtist && (isVA || !artistsMatch(trackArtist, [artist])) ? trackArtist : undefined,
			  duration: parseFloat(tr.dataset.duration) || undefined,
			  description: description,
			  url: !trackIdentifiers.BOOMKAT_ID ? response.finalUrl : undefined,
			  cover_url: imgUrl,
			  identifiers: mergeIds(),
			};
		  });
		});
	  }); else if (url.hostname.endsWith('ecmrecords.com') && /^\/(?:catalogue|shop)\/(\d+)\b/i.test(url.pathname)) {
		const appLink = 'https://www.ecmrecords.com/app';
		let serial = parseInt(RegExp.$1), referer = 'https://www.ecmrecords.com/catalogue/' + serial;
		return Promise.all([
		  globalXHR(`${appLink}/core/server_load.php?r=default&page=catalogue&serial=${serial}`, {
			responseType: 'json',
			headers: { 'Referer': referer },
		  }).then(response => response.response.items[0]),
		  globalXHR(`${appLink}/ajax/get_related_artists.php?serial=${serial}&targetvar=related_artists_and_products`, {
			responseType: 'json',
			headers: { 'Referer': referer },
		  }).then(response => response.response.related_artists),
		  globalXHR(`${appLink}/ajax/get_related_tracks.php?serial=${serial}&targetvar=parse_tracks`, {
			responseType: 'json',
			headers: { 'Referer': referer },
		  }).then(response => response.response),
		]).then(function(metaData) {
		  if (prefs.diag_mode) console.debug('ECM metadata loaded:', metaData);
		  identifiers.ECM_ID = metaData[0].serial;
		  if (metaData[0].barcode) identifiers.BARCODE = metaData[0].barcode; else {
			i = metaData[0].multi_barcodes.toString().split('^');
			if (i.homogeneous()) identifiers.BARCODE = i[0];
		  }
		  artist = metaData[1].map(relArtist => relArtist.name);
		  isVA = vaParser.test(metaData[0].main_artist);
		  i = metaData[0].multi_articlecodes.toString().split('^');
		  releaseDate = metaData[0].date_release || metaData[0].date_release_digital || metaData[0].date_release_presale
		  	|| metaData[0].date_release_expected || metaData[0].date_release_usa || metaData[0].date_release_uk
		  	|| metaData[0].date_release_jap || metaData[0].date_release_fr || metaData[0].date_release_de
			|| metaData[0].date_release_other; // ambiguity
		  if (i.homogeneous()) catalogue = i[0];
		  if (metaData[0].description) description = '[quote]' +
			html2php(domParser.parseFromString(metaData[0].description, 'text/html').body, referer) + '[/quote]';
		  		else description = '';
		  if (metaData[0].extra_data) try {
		  } catch(e) { console.debug(e) }
		  if (Array.isArray(metaData[0].related_press)) metaData[0].related_press.forEach(function(article) {
			if (description) description += '\n';
			var by = (article.writer + ' / ' + article.magazine).replace(/^ \/ $|^ \/|\/ $/g, '');
			if (by) by = '\n\nby ' + by;
			description += '[hide=' + article.title + ']' +
			  html2php(domParser.parseFromString(article.description, 'text/html').body, referer) + by + '[/hide]\n';
		  });
		  if (metaData[1].length > 0) {
			if (description) description += '\n';
			description += '[b]Personnel:[/b]\n' + metaData[1]
			  .map(relArtist => `[url=https://www.ecmrecords.com/${relArtist.link}]${relArtist.name}[/url]: ${relArtist.instrument || relArtist.role}`)
			  .join('\n');
		  }
		  return metaData[2].map(function(track) {
			trackIdentifiers = { TRACK_ID: track.serial };
			trackArtist = track.participants;
			if (trackArtist && !isVA && artistsMatch(trackArtist, metaData[0].main_artist)) trackArtist = undefined;
			return {
			  artist: isVA ? VA : metaData[0].main_artist,
			  album: metaData[0].title,
			  release_date: releaseDate ? normalizeDate(releaseDate) : undefined,
			  label: 'ECM Records',
			  catalog: catalogue || `${metaData[0].prefix} ${metaData[0].suffix}`,
			  genre: genres.join('; '),
			  track_number: parseInt(track.track_nr) || undefined,
			  disc_number: parseInt(track.cd_nr) || undefined,
			  disc_subtitle: track.movement ? track.title : undefined,
			  composer: track.composer,
			  track_artist: trackArtist,
			  performers: !isVA ? artist : undefined,
			  title: track.movement || track.title,
			  description: description.collapseGaps(),
			  url: !trackIdentifiers.ECM_ID ? referer : undefined,
			  cover_url: metaData[0].image_01_full,
			  identifiers: mergeIds(),
			};
		  });
		});
	  } else if (url.hostname.endsWith('actmusic.com')) return globalXHR(url.href.replace('actmusic.com/de/', 'actmusic.com/en/')).then(function(response) {
		var enLink;
		response.document.querySelectorAll('li > a.metanav_languageSwitch')
		  .forEach(a => { if (a.textContent.trim() == 'EN') enLink = 'https://www.actmusic.com' + a.pathname });
		return enLink ? globalXHR(enLink) : response;
	  }).then(function(response) {
		if ((ref = response.document.querySelector('h1.album-detail_artisthead')) != null)
		  artist = ref.textContent.trim();
		isVA = vaParser.test(artist);
		if ((ref = response.document.querySelector('h2.album-detail_albumhead')) != null)
		  album = ref.textContent.trim().replace(/ - (?:CD|LP|Vinyl)$/, '');
		response.document.querySelectorAll('ul.release-format-info > li').forEach(function(li) {
		  try {
			var key = li.querySelector('span.release-format-info_label').textContent.trim().replace(/\s*:\s*$/, ''),
				value = li.querySelector('span.release-format-info_value').textContent.trim();
		  } catch(e) {
			console.debug(e);
			return;
		  }
		  switch (key.toLowerCase()) {
			case 'format': media = value; break;
			case 'cat no.': catalogue = value; break;
			case 'barcode': identifiers.BARCODE = value; break;
			case 'release': case 'german release': releaseDate = normalizeDate(value, 'de'); break;
			case 'genre': genres = value.split(/\s*,\s*/); break;
		  }
		});
		if ((ref = response.document.querySelector('div.album_cover_image')) != null
		   || /^url\([\'\"](.+)[\'\"]\)$/.test(ref.style.backgroundImage)) imgUrl = RegExp.$1;
		trs = response.document.querySelectorAll('ol.tracklist > li');
		return (function() {
		  if ((ref = response.document.querySelector('div.sh3 > h1.header_title > a.btn-arrow-right')) == null) {
			getDescription(response, 'div.col-infos', false);
			return Promise.resolve(description);
		  }
		  return globalXHR('https://www.actmusic.com' + ref.pathname).then(function(response) {
			description = [
			  html2php(response.document.querySelector('div.c-bio-wrap > div.c-bio-text'), response.finalUrl),
			  html2php(response.document.querySelector('div.c-bio-wrap > div.c-bio-sidebar'), response.finalUrl),
			].filter(description => Boolean(description)).join('\n\n').collapseGaps(), pdf = actPdfBooklet(response);
			if (pdf) description += '\n\n' + pdf;
			return description;
		  });
		})().then(description => Array.from(trs).map((tr, ndx) => ({
		  artist: isVA ? VA : artist,
		  album: album,
		  release_date: releaseDate,
		  label: 'ACT Music',
		  catalog: catalogue,
		  genre: genres.join('; '),
		  media: media,
		  track_number: (ref = tr.querySelector('span.tracklist_tracknumber')) != null ?
		  	parseInt(ref.textContent) : undefined,
		  total_tracks: trs.length,
		  title: (ref = tr.querySelector('span.tracklist_tracktitle')) != null ? ref.textContent.trim() : undefined,
		  composer: (ref = tr.querySelector('span.tracklist_credits')) != null
		  	&& /^\s*\(\s*(.+?)\s*\)\s*$/.test(ref.textContent) ? RegExp.$1 : undefined,
		  duration: (ref = tr.querySelector('span.tracklist_trackduration')) != null ?
		  timeStringToTime(ref.textContent) : undefined,
		  description: description,
		  url: response.finalUrl,
		  cover_url: imgUrl,
		  identifiers: mergeIds(),
		})));
	  }); else if (url.hostname.endsWith('jpc.de') && url.pathname.startsWith('/jpcng/')) {
		let params = new URLSearchParams(url.search);
		params.set('lang', 'en');
		url.search = params;
		return globalXHR(url).then(function(response) {
		  if ((ref = response.document.querySelector('div.box.by > a')) != null) artist = ref.textContent.trim();
		  isVA = vaParser.test(artist);
		  if ((ref = response.document.querySelector('div.box.title')) != null) album = ref.textContent.trim();
		  if ((ref = response.document.querySelector('div.box.medium > em')) != null) media = ref.textContent.trim();
		  response.document.querySelectorAll('div.box.detailinfo > ul > li > b').forEach(function(b) {
			switch (b.textContent.trim().toLowerCase()) {
			  case 'label:': label = b.nextElementSibling.textContent.trim(); break;
			  case 'bestellnummer:': case 'order number:': catalogue = b.nextElementSibling.textContent.trim(); break;
			  case 'erscheinungstermin:': case 'release date:': releaseDate = normalizeDate(b.nextSibling.textContent, 'de'); break;
			}
		  });
		  getDescription(response, 'div.box.textlink > div[data-pd="j"]', true);
		  if (description && (ref = response.document.querySelector('div.rear-image > a.mfp-image')) != null)
			description += `\n\n[img]${ref.href.replace(/\/w\d+\//i, '/w9999/')}[/img]`;
		  if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
			imgUrl = ref.content.replace(/\/w\d+\//i, '/w9999/');
		  trs = response.document.querySelectorAll('div.playlist > ol > li[itemprop="track"]');
		  response.document.querySelectorAll('div.playlist').forEach(function(playlist, discNumber, nl) {
			discSubtitle = (ref = playlist.querySelector(':scope > h4')) != null ? ref.textContent.trim() : undefined;
			Array.prototype.push.apply(tracks, Array.from(playlist.querySelectorAll('ol > li[itemprop="track"]')).map((tr, ndx) => ({
			  artist: isVA ? VA : artist,
			  album: album,
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: media,
			  disc_number: discNumber + 1,
			  total_discs: nl.length,
			  disc_subtitle: discSubtitle,
			  track_number: (ref = tr.querySelector('strong')) != null ? parseInt(ref.textContent) : ndx + 1,
			  total_tracks: trs.length,
			  title: (ref = tr.querySelector('small[itemprop="name"]')) != null ? ref.textContent.trim() : undefined,
			  description: description,
			  url: response.finalUrl,
			  cover_url: imgUrl,
			  identifiers: mergeIds(),
			})));
		  });
		  return tracks;
		});
	  } else if (url.hostname.endsWith('pias.com') && url.pathname.startsWith('/release/')) return globalXHR(url).then(function(response) {
		if (/\/release\/(\d+)\b/i.test(url.pathname)) identifiers.PIAS_ID = parseInt(RegExp.$1);
		artist = Array.from(response.document.querySelectorAll('div.product-details > div.product-info > dl > dd.artist > a'))
		  .map(a => a.title || a.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div.product-details > div.product-info > dl > dd.release-title')) != null)
		  album = ref.textContent.trim();
		label = Array.from(response.document.querySelectorAll('div.product-details > div.product-info > dl > dd.label > a'))
		  .map(a => a.title || a.textContent.trim()).join(' / ');
		if ((ref = response.document.querySelector('div.product-details > div.product-info > dl > dd.catalogue-number')) != null)
		  catalogue = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.product-details > div.product-info > dl > dd.product-release-date')) != null)
		  releaseDate = normalizeDate(ref.textContent, 'be');
		//getDescription(response, 'div.box.textlink > div[data-pd="j"]', true);
		description = imageHosts.rehostImages(Array.from(response.document.querySelectorAll('ul.product-image-list  > li.product-image-item > a > img.product-image'))
			.map(img => img.src.replace(/\/[bl]\//i, '/'))).catch(reason => [])
			.then(results => results.map(result => '[img]' + (typeof result == 'string' ? result
				: typeof result == 'object' && result.original ? result.original : null) + '[/img]').join('\n'));
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
		  imgUrl = ref.content.replace(/\/[sbl]\//i, '/');
		else if ((ref = response.document.querySelector('img[itemprop="image"]')) != null)
		  imgUrl = ref.src.replace(/\/[sbl]\//i, '/');
		trs = response.document.querySelectorAll('ol.track-list > li.track');
		return description.then(description => Array.from(trs).map(function(li, index) {
		  trackIdentifiers = { TRACK_ID: li.dataset.id };
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			media: media,
			//disc_number: discNumber + 1,
			//total_discs: nl.length,
			//disc_subtitle: discSubtitle,
			track_number: (ref = li.querySelector('span.track-number')) != null ? parseInt(ref.textContent) : ndx + 1,
			total_tracks: trs.length,
			title: (ref = li.querySelector('span[itemprop="name"]')) != null ?
				ref.title || ref.textContent.trim() : undefined,
			duration: (ref = li.querySelector('span.track-duration')) != null ?
				timeStringToTime(ref.textContent) : undefined,
			description: description || undefined,
			url: !identifiers.PIAS_ID ? response.finalUrl : undefined,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		}));
	  }); else if (url.hostname.endsWith('hearnow.com')) return globalXHR(url).then(function(response) {
		artist = (ref = response.document.querySelector('div.artist_name > a.artist_page_link')) != null ?
		  ref.textContent.trim() : undefined;
		isVA = vaParser.test(artist);
		if ((ref = response.document.querySelector('div.album_name_large')) != null)
		  album = ref.textContent.trim();
		if ((ref = response.document.querySelector('div.release_date')) != null)
		  releaseDate = normalizeDate(ref.textContent.trim().replace(/^Released\s+/i, ''));
		if ((ref = response.document.querySelector('div.album_cover > img.album_cover_image')) != null) imgUrl = ref.src;
		trs = response.document.querySelectorAll('section#tracks > ul.playlinks > li');
		return Array.from(trs).map(function(li, ndx) {
		  trackIdentifiers = { ISRC: li.dataset.isrc };
		  trackArtist = (ref = li.querySelector('div.track_artist_name')) != null ? ref.textContent.trim() : undefined;
		  return {
			artist: isVA ? VA : artist,
			album: album,
			release_date: releaseDate,
			media: media,
			track_number: parseInt(li.dataset.tracknumber) || ndx + 1,
			total_tracks: trs.length,
			title: (ref = li.querySelector('div.track_name')) != null ? ref.textContent.trim() : undefined,
			track_artist: trackArtist && (isVA || !artistsMatch(trackArtist, artist)) ? trackArtist : undefined,
			duration: (ref = li.querySelector('div.track_duration')) != null ?
				timeStringToTime(ref.textContent) : undefined,
			url: response.finalUrl,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('dominomusic.com') && url.pathname.startsWith('/releases/')) return globalXHR(url, { responseType: 'text' }).then(function(response) {
		if (!/\b(?:selected):\s*(\d+)\b/m.test(response.responseText)) throw 'Invalid page format';
		identifiers.DOMINO_ID = parseInt(RegExp.$1);
		if (!/\b(?:data):\s*({"releases":.*?}),$/m.test(response.responseText)) throw 'Invalid page format';
		var release = JSON.parse(RegExp.$1).releases.filter(release => release.id == identifiers.DOMINO_ID);
		if (release.length <= 0) throw 'Assertion failed: release not found';
		identifiers.RELEASETYPE = release[0].release_type;
		isVA = vaParser.test(release[0].artist);
		description = html2php(domParser.parseFromString(release[0].description, 'text/html').body, response.finalUrl)
		  .collapseGaps();
		if (Array.isArray(release[0].images))
		  imgUrl = Object.keys(release[0].images[0])
			.reduce((acc, key) => release[0].images[0][key].width * release[0].images[0][key].height
				> release[0].images[0][acc].width * release[0].images[0][acc].height ? key : acc);
		var isLP = /\b(?:LP)\b/.test(release[0].format);
		release[0].tracklisting.tracks.forEach(function(volume, volNdx) {
		  Array.prototype.push.apply(tracks, volume.tracklisting.map(track => ({
			artist: isVA ? VA : release[0].artist,
			album: release[0].title,
			release_date: release[0].released_at.replace(/^(\d+)\w+\b/, '$1'),
			label: 'Domino Recording',
			catalog: release[0].sku,
			media: release[0].format,
			disc_number: !isLP ? volNdx + 1 : Math.round((volNdx + 1) / 2),
			disc_subtitle: volume.title || undefined,
			total_discs: isLP ? release[0].tracklisting.tracks.length : Math.ceil(release[0].tracklisting.tracks.length),
			track_number: track.number,
			total_tracks: release[0].tracklisting.tracks.reduce((acc, volume) => acc + volume.tracklisting.length, 0),
			title: track.title,
			url: response.finalUrl,
			description: description,
			cover_url: imgUrl ? release[0].images[0][imgUrl].url : undefined,
			identifiers: mergeIds(),
		  })));
		});
		return tracks;
	  }); else if (url.hostname.endsWith('kompakt.fm')) return globalXHR(url).then(function(response) {
		if ((ref = response.document.querySelector('div.player-data > ul.release > li.id')) != null)
		  identifiers.KOMPAKT_ID = ref.textContent;
		if ((ref = response.document.querySelector('div.player-data > ul.release > li.artist')) != null)
		  artist = ref.textContent;
		isVA = (ref = response.document.querySelector('div.player-data > ul.release > li.various-artists')) != null ?
		  eval(ref.textContent) : vaParser.test(artist);
		if ((ref = response.document.querySelector('div.player-data > ul.release > li.title')) != null)
		  album = ref.textContent;
		response.document.querySelectorAll('div.mt-3 > div > div.mt-2').forEach(function(div) {
		  var key = div.querySelector(':scope > span:nth-of-type(1)'),
			  value = div.querySelector(':scope > span:nth-of-type(2)');
		  if (key == null || value == null) return;
		  key = key.textContent.trim(); value = value.textContent.trim();
		  switch(key.replace(/\s*:\s*$/, '').toLowerCase()) {
			case 'label': label = value; break;
			case 'release date': releaseDate = value; break;
			case 'cat no': catalogue = value; break;
			case 'barcode': identifiers.BARCODE = value; break;
		  }
		});
		getDescription(response, 'div.toggable-level-1 > div.container-fluid > div.mt-3', true);
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null) imgUrl = ref.content;
		trs = response.document.querySelectorAll('div.player-data > ul.tracks > li.track');
		return Array.from(trs).map(function(li, ndx) {
		  trackIdentifiers = {
			TRACK_ID: (ref = li.querySelector('span.position')) != null ? ref.textContent : undefined,
		  };
		  trackArtist = (ref = li.querySelector('li.artist')) != null ? ref.textContent : undefined;
		  return {
			artist: isVA ? VA : artist,
			album: album,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			media: media,
			track_number: (ref = li.querySelector('li.position')) != null && parseInt(ref.textContent) || ndx + 1,
			total_tracks: trs.length,
			title: (ref = li.querySelector('li.title')) != null ? ref.textContent : undefined,
			track_artist: trackArtist && (isVA || !artistsMatch(trackArtist, artist)) ? trackArtist : undefined,
			duration: (ref = li.querySelector('li.duration')) != null ? timeStringToTime(ref.textContent) : undefined,
			url: (ref = response.document.querySelector('meta[property="og:url"][content]')) != null ?
				ref.content : response.finalUrl,
			description: description,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('eclassical.com')) return globalXHR(url).then(function(response) {
		if ((ref = response.document.querySelector('h1.articleName')) != null) album = ref.textContent;
		artist = []; composer = []; genres = ['Classical']; label = [];
		var conductors = [];
		iterArtprop('div#articlePageContents', function(title, value) {
		  switch (title.toLowerCase()) {
			case 'composers':
			  Array.prototype.push.apply(composer, Array.from(value.querySelectorAll('div > a'))
				.map(a => a.textContent.trim().replace(/^(.+?),\s+(.+)$/, '$2 $1')));
			  break;
			case 'performers':
			  Array.prototype.push.apply(artist, Array.from(value.querySelectorAll('div > a'))
				.map(a => a.textContent.trim().replace(/^(.+?),\s+(.+)$/, '$2 $1')));
			  break;
			case 'orchestras / ensembles': case 'orchestras': case 'ensembles':
			  Array.prototype.push.apply(artist, Array.from(value.querySelectorAll('div > a'))
				.map(a => a.textContent.trim()));
			  break;
			case 'conductors':
			  Array.prototype.push.apply(conductors, Array.from(value.querySelectorAll('div > a'))
				.map(a => a.textContent.trim().replace(/^(.+?),\s+(.+)$/, '$2 $1')));
			  break;
			case 'genres':
			case 'instruments':
			case 'periods':
			  Array.prototype.push.apply(genres, Array.from(value.querySelectorAll('div > a'))
				.map(a => a.textContent.trim()));
			  break;
			case 'label':
			  Array.prototype.push.apply(label, Array.from(value.querySelectorAll('div > a'))
				.map(a => a.textContent.trim()));
			  break;
			case 'catalogue number':
			  catalogue = value.textContent.trim();
			  break;
			case 'release date':
			  releaseDate = value.textContent.trim();
			  break;
			case 'discs':
			  totalDiscs = parseInt(value.textContent) || 1;
			  break;
			case 'original sample rate': case 'orig. sample rate': case 'sample rate':
			  if (/\b(\d+)(?:\s*(?:Hz)\b)/.test(value.textContent)) samplerate = parseInt(RegExp.$1);
			  break;
		  }
		});
		isVA = artist.length == 1 && vaParser.test(artist[0]);
		getDescription(response, 'div#articleText', false);
		iterArtprop('div[id$="album-castlist"]', function(title, value, index) {
		  if (description) description += index <= 0 ? '\n\n' : '\n'
		  if (index <= 0) description += '[b]Cast:[/b]\n';
		  description += title + ' - ' + joinTextChilds(value, '; ', t => t.replace(/^(.+?),\s+(.+)$/, '$2 $1'));
		});
		if (ref = eclassicalBooklets(response)) if (description) description += '\n\n' + ref; else description = ref;
		if ((ref = response.document.querySelector('div#articleImage > a')) != null) imgUrl = ref.href;
		totalTracks = response.document.querySelectorAll('table.tracklistTable > tbody > tr.trackRow').length;
		var workTitle, workComposers = [];
		response.document.querySelectorAll('table.tracklistTable > tbody > tr').forEach(function(tr, ndx) {
		  if (tr.classList.contains('tracklistDiscNumberRow') && (ref = tr.querySelector('div.tracklistDiscHeader')) != null) {
			discSubtitle = ref.textContent.trim();
			guessDiscNumber();
		  }
		  if (tr.classList.contains('tracklistRowDivider')) {
			workComposers = [];
			workTitle = undefined;
		  }
		  if (tr.classList.contains('tracklistRowVerkComposerName'))
			workComposers = Array.from(tr.querySelectorAll('td > span.tracklistComposerVerkName'))
		  		.map(span => span.textContent.trim().replace(/^(?:Composer)\s*:\s*/i, '').replace(/^(.+?),\s+(.+)$/, '$2 $1'));
		  if (tr.classList.contains('tracklistRowVerkName')
			  && (ref = tr.querySelector('span.tracklistVerkName')) != null) workTitle = joinTextChilds(ref);
		  if (tr.classList.contains('trackRow')) {
			discSubtitle = workTitle || '';
			if (discSubtitle && workComposers.length > 0 && !workComposers.equalCaselessTo(composer))
				discSubtitle = workComposers.join(', ') + ': ' + discSubtitle;
			if ((title = joinTextChilds(tr.querySelector('td.trackName > a')))
				&& title.startsWith(workTitle))
			  title = title.slice(workTitle.length).replace(/^\s*[\:\-\,\;]\s*/, '') || workTitle;
			tracks.push({
			  artist: isVA ? VA : undefined,
			  artists: !isVA ? artist : undefined,
			  album: album,
			  release_date: releaseDate,
			  genre: genres.join('; '),
			  label: label.join(' / ') || undefined,
			  catalog: catalogue,
			  media: media,
			  samplerate: samplerate,
			  disc_subtitle: discSubtitle || undefined,
			  disc_number: discNumber,
			  total_discs: totalDiscs,
			  track_number: (ref = tr.querySelector('td.trackNumber')) != null ? parseInt(ref.textContent) : undefined,
			  total_tracks: totalTracks,
			  title: title,
			  composers: workComposers.length > 0 ? workComposers : composer,
			  conductors: conductors,
			  duration: (ref = tr.querySelector('td.trackLength')) != null ? timeStringToTime(ref.textContent) : undefined,
			  description: description,
			  url: response.finalUrl,
			  cover_url: imgUrl,
			  identifiers: identifiers,
			});
		  }
		});
		return tracks;

		function joinTextChilds(node, junction = undefined, transform = undefined) {
		  if (!(node instanceof Node)) return undefined;
		  return Array.from(node.childNodes).filter(childNode => childNode.nodeType == Node.TEXT_NODE)
		  	.map(childNode => (transform || (t => t))(childNode.wholeText.trim())).join(junction || ' ') || undefined;
		}

		function iterArtprop(root, callback) {
		  if (typeof callback != 'function') return;
		  response.document.querySelectorAll(root + '> div.artprop > table > tbody > tr').forEach(function(tr, index) {
			var title = tr.querySelector('td.property_title'), value = tr.querySelector('td.property_value');
			if (title != null && value != null) callback(title.textContent.trim(), value, index);
				else console.warn('Unexpected artprop structure:', tr);
		  });
		}
	  }); else if (url.hostname.endsWith('qq.com') && url.pathname.includes('/album/')) return globalXHR(url).then(function(response) {
		if (/\/album\/(\S+)\./.test(url.pathname)) identifiers.QQMUSIC_ID = RegExp.$1;
		artist = Array.from(response.document.querySelectorAll('div.data__cont > div.data__singer > a[itemprop="byArtist"]'))
			.map(a => a.title || a.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('div.data__cont > div.data__name > h1')) != null)
		  album = ref.title || ref.textContent.trim();
		const datainfoStripper = /^.*:\s*|[\u0080-\uFFFF]+/g;
		if ((ref = response.document.querySelector('div.data__cont > ul.data__info > li.data_info__item:nth-of-type(1)')) != null)
		  genres = [ref.textContent.trim().replace(datainfoStripper, '')];
		if ((ref = response.document.querySelector('div.data__cont > ul.data__info > li.data_info__item:nth-of-type(3)')) != null)
		  releaseDate = ref.textContent.trim().replace(datainfoStripper, '');
		if ((ref = response.document.querySelector('img#albumImg')) != null)
		  imgUrl = ref.src.replace(/(?:_\d+)?(\.\w+)(?:\?.*)?$/, '$1').replace(/R\d+x\d+/, '');
		trs = response.document.querySelectorAll('ul#song_box > li[mid]');
		return Array.from(trs).map(function(li, index) {
		  trackIdentifiers = {
			TRACK_ID: parseInt(li.getAttribute('mid')) || li.getAttribute('mid') || undefined,
		  };
		  trackArtist = Array.from(li.querySelectorAll('div.songlist__artist > a'))
			.map(a => a.title || a.textContent.trim());
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			genre: genres.join('; '),
			label: label,
			media: media,
			track_number: (ref = li.querySelector('div.songlist__number')) != null && parseInt(ref.textContent)
				|| index + 1,
			total_tracks: trs.length,
			title: (ref = li.querySelector('div.songlist__songname > span > a')) != null ?
				ref.title || ref.textContent.trim() : undefined,
			track_artists: isVA || !trackArtist.equalCaselessTo(artist) ? trackArtist : undefined,
			duration: (ref = li.querySelector('div.songlist__time')) != null ?
				timeStringToTime(ref.textContent) : undefined,
			url: !identifiers.QQMUSIC_ID ? response.finalUrl : undefined,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('muziekweb.nl') && url.pathname.includes('/Link/')) return globalXHR(url).then(function(response) {
		if (/\/Link\/(\w+)\b/i.test(url.pathname)) identifiers.MUZIEKWEB_ID = RegExp.$1;
		artist = Array.from(response.document.querySelectorAll('ul.cat-performers > li[itemprop="byArtist"] > a > span'))
			.map(span => span.textContent.trim());
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = response.document.querySelector('h1.cat-albumtitle')) != null) album = ref.textContent.trim();
		if ((ref = response.document.querySelector('span[itemprop="catalogNumber"]')) != null)
			catalogue = ref.textContent.trim();
		if ((ref = response.document.querySelector('span[itemprop="recordLabel"]')) != null)
			label = ref.textContent.trim();
		genres = Array.from(response.document.querySelectorAll('ul.cat-genres span[itemprop="genre"]'))
			.map(span => span.textContent.trim());
		if ((ref = response.document.querySelector('div.cat-albumrelease > meta[itemprop="datePublished"][content]')) != null)
			releaseDate = ref.content;
		if ((ref = response.document.querySelector('span[itemprop="musicReleaseFormat"]')) != null) {
		  if (/\b(?:compact\s+disc)/i.test(ref.textContent)) media = 'CD';
		}
		getDescription(response, 'div#album-info div.cat-article-text', true);
// 		if (!description && (ref = response.document.querySelector('meta[property="og:description"]')) != null)
// 			description = ref.content;
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
			imgUrl = ref.content.replace(/\/COVER\/\w+\b/i, '/COVER/SUPERLARGE');
		trs = response.document.querySelectorAll('ul.cat-tracklist > li[itemprop="itemListElement"] > div.cat-track-item');
		return Array.from(trs).map(function(div, index) {
		  trackIdentifiers = {
			TRACK_ID: (ref = div.querySelector('div.cat-track-playbuttons > div[id]')) != null ? ref.id : undefined,
		  };
		  trackArtist = Array.from(div.querySelectorAll('span[itemprop="byArtist"] meta[itemprop="name"][content]'))
			.map(meta => meta.content);
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: album,
			release_date: releaseDate,
			genre: genres.join('; '),
			label: label,
			catalog: catalogue,
			media: media,
			track_number: (ref = div.querySelector('div.cat-track-number')) != null
				&& (parseInt(ref.textContent) || ref.textContent.trim()) || index + 1,
			total_tracks: trs.length,
			title: (ref = div.querySelector('div.cat-track[title]')) != null ? ref.title
				: (ref = div.querySelector('div.cat-track-title')) != null ? ref.textContent.trim() : undefined,
			track_artists: isVA || !trackArtist.equalCaselessTo(artist) ? trackArtist : undefined,
			duration: (ref = div.querySelector('div.cat-track-playtime')) != null ?
				timeStringToTime(ref.textContent) : undefined,
			description: description,
			url: identifiers.MUZIEKWEB_ID ? undefined
				: (ref = response.document.querySelector('meta[property="og:url"]')) != null ?
					ref.content : response.finalUrl,
			cover_url: imgUrl,
			identifiers: mergeIds(),
		  };
		});
	  }); else if (url.hostname.endsWith('beatsource.com')) return /\/releases?\/(?:.+\/)?(\d+)(?=\/|$)/i.test(url.pathname) ?
			queryBeatsourceAPI('releases/' + RegExp.$1).then(function(release) {
		if (prefs.diag_mode) console.debug('Beatsource release metadata received:', release);
		identifiers.BEATSOURCE_ID = release.id;
		artist = release.artists.map(artist => artist.name);
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if (release.type.name) identifiers.RELEASETYPE = release.type.name;
		if (release.upc) identifiers.BARCODE = release.upc;
		if ('is_explicit' in release) identifiers.EXPLICIT = Number(release.is_explicit);

		function trackMapper(track, index) {
		  trackIdentifiers = { TRACK_ID: track.id };
		  if (track.isrc) trackIdentifiers.ISRC = track.isrc;
		  if ('is_explicit' in track) trackIdentifiers.EXPLICIT = Number(track.is_explicit);
		  if (track.bpm) trackIdentifiers.BPM = track.bpm;
		  trackArtist = track.artists.map(artist => artist.name);
		  if ((title = track.name) && track.mix_name && track.mix_name != 'Original Mix')
			title += ' (' + track.mix_name + ')';
		  try { genres = [track.genre.name] } catch(e) { genres = [] }
		  if (track.sub_genre) try { genres.push(track.sub_genre.name) } catch(e) { }
		  return {
			artist: isVA ? VA : undefined,
			artists: artist.length > 0 ? artist : undefined,
			album: release.name,
			release_date: release.new_release_date || release.publish_date/* ||
			  track.new_release_date || track.publish_date*/ || undefined,
			genre: genres.join('; ') || undefined,
			label: release.label.name,
			catalog: release.catalog_number || track.catalog_number || undefined,
			media: media,
			track_number: track.number || index + 1,
			total_tracks: release.track_count,
			title: title,
			track_artists: trackArtist.length > 0 && (isVA || !trackArtist.equalCaselessTo(artist)) ?
			  trackArtist : undefined,
			remixers: track.remixers.length > 0 ? track.remixers.map(remixer => remixer.name)
			  :/* release.remixers.length > 0 ? release.remixers.map(remixer => remixer.name) :*/ undefined,
			duration: track.length_ms > 0 ? track.length_ms / 1000 : undefined,
			description: release.desc || undefined,
			url: release.slug ? `https://www.beatsource.com/release/${release.slug}/${release.id}` : url,
			identifiers: mergeIds(),
			cover_url: release.image.uri || undefined,
		  };
		}

		return queryBeatsourceAPI(`releases/${release.id}/tracks`, { per_page: 9999 }).then(function(tracks) {
		  if (prefs.diag_mode) console.debug('Beatsource tracks metadata received:', tracks.results);
		  return tracks.count == release.track_count ? tracks.results.map(trackMapper)
		  	: Promise.reject('Track counts inconsistency');
		}).catch(function(reason) {
		  console.warn('Beatsource release tracks failed:', reason);
		  return Promise.all(release.tracks.map(track => queryBeatsourceAPI(track)))
			.then(tracks => tracks.map(trackMapper));
		});
	  }) : Promise.reject('This URL doesnot refer to Beatsource release');
	  else if (url.hostname == 'music.163.com' && (matches = /\/(?:album)\b.*\b(?:id)=(\d+)\b/i.exec(url.href)) != null) return Promise.all([
		globalXHR('https://music.163.com/album?id=' + matches[1]),
		queryNeteaseAPI('album/' + matches[1]), queryNeteaseAPI('v1/album/' + matches[1]),
	  ]).then(function(responses) {
		if (prefs.diag_mode) console.debug('Netease metadata loaded:', responses[1].album, responses[2]);
		identifiers.NETEASE_ID = responses[1].album.id;
		artist = responses[1].album.artists.map(artist => artist.name);
		isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		if ((ref = responses[0].document.querySelector('meta[property="music:release_date"][content]')) != null)
		  releaseDate = ref.content;
		if (!(description = responses[2].album.description || responses[1].album.description)
			&& (ref = responses[0].document.querySelector('meta[property="og:description"][content]')) != null)
		  description = ref.content;
// 		let lyrics = Promise.all(responses[1].album.songs.map(track =>
// 			globalXHR('https://music.163.com/api/song/lyric?id=' + track.id, { responseType: 'json' })
// 				.then(response => response.response.code == 200 ? response.response : Promise.reject(response.response.msg))));
// 		if (prefs.diag_mode) lyrics.then(lyrics => { console.debug('Netease lyrics loaded:', lyrics) });
		return finalizeTracks(responses[1].album.songs.map(function(track, index) {
		  trackIdentifiers = { TRACK_ID: track.id };
		  trackArtist = track.artists.map(artist => artist.name);
		  imgUrl = /*responses[2].album.picUrl || */responses[1].album.picUrl || track.album.picUrl;
		  return {
			artist: isVA ? VA : undefined,
			artists: !isVA ? artist : undefined,
			album: responses[1].album.name, //track.album.name
			release_date: releaseDate,
			media: media,
			label: responses[1].album.company || undefined,
			disc_number: parseInt(track.disc) || undefined,
			track_number: track.no || index + 1,
			total_tracks: responses[1].album.size,
			title: track.name,
			track_artists: isVA || !trackArtist.equalCaselessTo(artist) ? trackArtist : undefined,
			duration: track.duration / 1000 || undefined,
			description: description ? '[quote]' + description + '[/quote]' : undefined,
			url: !identifiers.NETEASE_ID && (ref = responses[0].document.querySelector('meta[property="og:url"]')) != null ?
				ref.content : undefined,
			cover_url: imgUrl ? imgUrl.replace(/\b(?:p[123])(?=\.music\.\d+\.net\b)/i, 'p4') : undefined,
			identifiers: mergeIds(),
		  };
		}));
	  });
	  if (!weak) clipBoard.value = '';
	  return Promise.reject(url.hostname + ' not supported');

	  function mergeIds() {
		var r = Object.assign({}, identifiers, trackIdentifiers);
		trackIdentifiers = {};
		return r;
	  }

	  function getDescription(response, selectorOrNode, quote = false) {
		description = [];
		if (selectorOrNode instanceof HTMLElement) addFromNode(selectorOrNode);
			else if (typeof selectorOrNode == 'string')
			  response.document.querySelectorAll(selectorOrNode).forEach(addFromNode);
		description = description.join('\n\n').collapseGaps();
		if (quote && description.length > 0 && !description.includes('[quote]'))
			description = '[quote]' + description + '[/quote]';

		function addFromNode(node) {
		  var p = html2php(node, response.finalUrl).trim();
		  if (p) description.push(p);
		}
	  }

	  function durationFromMeta(elem) {
		if (!(elem instanceof HTMLElement)) return undefined;
		let meta = elem.querySelector('meta[itemprop="duration"][content]');
		if (meta == null) return undefined;
		let m = /^PT?(?:(?:(\d+)H)?(\d+)M)?(\d+)S$/i.exec(meta.content);
		if (m != null)
		  return (parseInt(RegExp.$1) || 0) * 60**2 + (parseInt(RegExp.$2) || 0) * 60 + (parseInt(RegExp.$3) || 0);
		m = timeStringToTime(meta.content);
		return m != null ? m : undefined;
	  }

	  function guessDiscNumber() {
		if (discParser.test(discSubtitle)) {
		  discSubtitle = undefined;
		  discNumber = parseInt(RegExp.$1);
		}
	  }

	  function finalizeTracks(_tracks = tracks) {
		if (isVA || !_tracks.every(function(track) {
		  return Array.isArray(track.track_artists) && track.track_artists.equalCaselessTo(_tracks[0].track_artists)
			  && (Array.isArray(track.track_guests) ? track.track_guests.equalCaselessTo(_tracks[0].track_guests)
				  : !Array.isArray(_tracks[0].track_guests))
		  	|| track.track_artist && track.track_artist == _tracks[0].track_artist;
		})) return _tracks;
		_tracks.forEach(function(track) {
		  if (Array.isArray(track.track_artists)) {
			track.artists = track.track_artists.sort();
			if (Array.isArray(track.track_guests)) track.featured_artists = track.track_guests.sort();
			delete track.artist;
		  } else if (track.track_artist) track.artist = track.track_artist;
		  delete track.track_artists;
		  delete track.track_guests;
		  delete track.track_artist;
		});
		return _tracks;
	  }
	} // fetchOnline_Music

	function joinArtists(arr, decorator = artist => artist) {
	  if (!Array.isArray(arr)) return null;
	  if (arr.some(artist => artist.includes('&'))) return arr.map(decorator).join(', ');
	  if (arr.length < 3) return arr.map(decorator).join(' & ');
	  return arr.slice(0, -1).map(decorator).join(', ') + ' & ' + decorator(arr.slice(-1).pop());
	}

	function stringifyArtists(artists) {
	  if (Array.isArray(artists)) try {
		if (artists[0].length <= 0) return null;
		var result = joinArtists(artists[0]);
		if (artists[1].length > 0) result += ' feat. ' + joinArtists(artists[1]);
		return result;
	  } catch(e) { console.error('stringifyArtists(...):', e) }
	  return null;
	}

	function twoOrMore(artist) { return artist.length >= 2 && !pseudoArtistParsers.some(rx => rx.test(artist)) };
	function looksLikeTrueName(artist, index = 0) {
	  return twoOrMore(artist)
		&& (index == 0 || !/^(?:his\b|her\b|Friends$|Strings$)/i.test(artist))
		&& artist.split(/\s+/).length >= 2
		&& !pseudoArtistParsers.some(rx => rx.test(artist)) || getSiteArtist(artist);
	}

	function strip(art) {
	  return [
		/\s+(?:aka|AKA)\.?\s+(.*)$/g,
		tailingBracketStripper,
	  ].reduce((acc, rx, ndx) => ndx != 1 || rx.test(acc) && !notMonospaced(RegExp.$1) ? acc.replace(rx, '') : acc, art);
	}

	function getSiteArtist(artist, asynchronous = false) {
	  //if (isOPS) return undefined;
	  if (!artist || notSiteArtistsCache.includesCaseless(artist)) return null;
	  var key = Object.keys(siteArtistsCache).find(it => it.toLowerCase() == artist.toLowerCase());
	  if (key) return siteArtistsCache[key];
	  var now = Date.now();
	  try { var apiTimeFrame = JSON.parse(window.localStorage[siteApiTimeframeStorageKey]) } catch(e) { apiTimeFrame = {} }
	  if (!apiTimeFrame.timeStamp || now > apiTimeFrame.timeStamp + 10000 + gazelleApiFrameReserve) {
		apiTimeFrame.timeStamp = now;
		apiTimeFrame.requestCounter = 1;
	  } else ++apiTimeFrame.requestCounter;
	  window.localStorage[siteApiTimeframeStorageKey] = JSON.stringify(apiTimeFrame);
	  if (apiTimeFrame.requestCounter > 5) {
		console.debug('getSiteArtist() request exceeding AJAX API time frame: /ajax.php?action=artist&artistname="' +
		  artist + '" (' + apiTimeFrame.requestCounter + ')');
		if (prefs.messages_verbosity >= 2) addMessage('AJAX API request exceeding time frame: artistname="' +
		  artist + '" (' + apiTimeFrame.requestCounter + ')', 'notice');
		++ajaxRejects;
		return undefined;
	  }
	  try {
		var requestUrl = '/ajax.php?action=artist&artistname=' + encodeURIComponent(artist);
		var xhr = new XMLHttpRequest;
		xhr.open('GET', requestUrl, asynchronous);
		if (isRED && prefs.redacted_api_key) xhr.setRequestHeader('Authorization', prefs.redacted_api_key);
		xhr.send();
		if (xhr.status == 404) {
		  notSiteArtistsCache.pushUniqueCaseless(artist);
		  return null;
		}
		if (xhr.readyState != XMLHttpRequest.DONE || xhr.status < 200 || xhr.status >= 400) {
		  console.warn('getSiteArtist("' + artist + '") error:', xhr, 'url:', document.location.origin + requestUrl);
		  return undefined; // error
		}
		let response = JSON.parse(xhr.responseText);
		if (response.status != 'success') {
		  notSiteArtistsCache.pushUniqueCaseless(artist);
		  return null;
		}
		siteArtistsCache[artist] = response.response;
		if (prefs.diag_mode) console.log('getSiteArtist("' + artist + '") success:', siteArtistsCache[artist]);
		return (siteArtistsCache[artist]);
	  } catch(e) {
		console.error('UA::getSiteArtist("' + artist + '"):', e, xhr);
		return undefined;
	  }
	}

	function splitArtists(str, parsers = multiArtistParsers) {
	  var result = [str];
	  parsers.forEach(function(parser) {
		for (let i = result.length; i > 0; --i) {
		  let j = result[i - 1].split(parser).map(strip);
		  if (j.length > 1 && j.every(twoOrMore) && !j.some(artist => pseudoArtistParsers.some(rx => rx.test(artist)))
			  && !getSiteArtist(result[i - 1])) result.splice(i - 1, 1, ...j);
		}
	  });
	  return result;
	}

	function splitAmpersands(artists) {
	  if (typeof artists == 'string') var result = splitArtists(artists);
	  	else if (Array.isArray(artists)) result = Array.from(artists); else return [];
	  ampersandParsers.forEach(function(ampersandParser) {
		for (let i = result.length; i > 0; --i) {
		  let j = result[i - 1].split(ampersandParser).map(strip);
		  if (j.length <= 1 || !j.every(looksLikeTrueName) || getSiteArtist(result[i - 1])) continue;
		  result.splice(i - 1, 1, ...j.filter(function(artist) {
			return !result.includesCaseless(artist) && !pseudoArtistParsers.some(rx => rx.test(artist));
		  }));
		}
	  });
	  return result;
	}

	function getArtists(trackArtist) {
	  if (!trackArtist || typeof trackArtist != 'string') trackArtist = '';
	  otherArtistsParsers.forEach(it => { if (it[0].test(trackArtist)) trackArtist = RegExp.$1 });
	  var result = [[], []];
	  featArtistParsers.forEach(function(rx, ndx) {
		var matches = rx.exec(trackArtist);
		if (matches == null || ndx >= 7 && !looksLikeTrueName(matches[1], 1)) return;
		splitAmpersands(matches[1]).forEach(artist => { result[1].pushUniqueCaseless(artist) });
		trackArtist = trackArtist.replace(rx, '');
	  });
	  splitAmpersands(trackArtist).forEach(artist => { result[0].pushUniqueCaseless(artist) });
	  return result;
	}

	function artistsMatch(artist1, artist2) {
	  if (!artist1 && !artist2) return true;
	  if (!artist1 || !artist2) return false;
	  if (typeof artist1 == 'string' && typeof artist2 == 'string'
		  && artist1.toLowerCase() == artist2.toLowerCase()) return true;
	  if (Array.isArray(artist1)) {
		var _artist1 = getStringVariants(artist1);
		try { if (_artist1.some(artist => artist == artist2.toLowerCase())) return true } catch(e) { }
	  }
	  if (Array.isArray(artist2)) {
		var _artist2 = getStringVariants(artist2);
		try { if (_artist2.some(artist => artist == artist1.toLowerCase())) return true } catch(e) { }
	  }
	  if (_artist1 && _artist2 && _artist1.some(artist => _artist2.includes(artist))) return true;
	  if (typeof artist1 == 'string') artist1 = getArtists(artist1);
	  if (typeof artist2 == 'string') artist2 = getArtists(artist2);
	  if (!Array.isArray(artist1) || !Array.isArray(artist2)) {
		console.warn('artistsMatch: assertion failed', artist1, artist2);
		return false;
	  }
	  return Array.isArray(artist1[0]) && Array.isArray(artist2[0]) && artist1[0].equalCaselessTo(artist2[0])
	  	&& ((!Array.isArray(artist1[1]) || artist1[1].length <= 0) && (!Array.isArray(artist2[1]) || artist2[1].length <= 0)
			|| Array.isArray(artist1[1]) && artist1[1].equalCaselessTo(artist2[1]));
	}

	function getStringVariants(arr) {
	  if (!Array.isArray(arr)) return null;
	  var result = [arr[0].join(', '), joinArtists(arr[0])];
	  if (Array.isArray(arr[1]) && arr[1].length > 0) {
		result[0] += ' feat. ' + arr[1].join(', ');
		result[1] += ' feat. ' + joinArtists(arr[1]);
		result = result.concat(result.map(a => a.replace(' feat. ', ' ft. ')))
			.concat(result.map(a => a.replace(' feat. ', ' featuring ')))
			.concat(result.map(a => a.replace(' feat. ', ' with ')))
			.concat(result.map(a => a.replace(' feat. ', ' avec ')));
	  }
	  return result.map(a => a.toLowerCase());
	}

	function queryItunesAPI(endPoint, params) {
	  return endPoint ? queryGenericAPI('itunes.apple.com', endPoint, params) : Promise.reject('No API endpoint');
	}
	function queryDeezerAPI(endPoint, params) {
	  return endPoint ? new Promise(function(resolve, reject) {
		const t0 = Date.now(), safeTimeFrame = 5000 + GM_getValue('deezer_quota_reserve', 500);
		let dzUrl = 'https://api.deezer.com/' + endPoint, retryCounter = 0, quotaCounter = 0;
		if (params && typeof params == 'object') try {
		  params = new URLSearchParams(params);
		  dzUrl += '?' + params.toString();
		} catch(e) { console.error(e, params) } else if (params != undefined) dzUrl += '/' + params.toString();
		//console.debug('Deezer query URL:', url);
		requestInternal();

		function requestInternal() {
		  const requestStart = Date.now();
		  if (!dzApiTimeFrame.timeStamp || requestStart - dzApiTimeFrame.timeStamp > safeTimeFrame) {
			dzApiTimeFrame.timeStamp = requestStart;
			dzApiTimeFrame.requestCounter = 1;
		  } else ++dzApiTimeFrame.requestCounter;
		  const queueSnapshot = {
			frameStart: dzApiTimeFrame.timeStamp,
			position: dzApiTimeFrame.requestCounter,
			timeDistance: requestStart - dzApiTimeFrame.timeStamp,
			frameLength: safeTimeFrame,
		  };
		  if (dzApiTimeFrame.requestCounter <= 50) GM_xmlhttpRequest({
			method: 'GET',
			url: dzUrl,
			responseType: 'json',
			headers: {
			  'Accept': 'application/json',
			  'Accept-Language': 'en-US, en',
			  'X-Requested-With': 'XMLHttpRequest',
			},
			onload: function(response) {
			  if (response.status < 200 || response.status >= 400) return reject(defaultErrorHandler(response));
			  if (!response.response.error) {
				let dt = Date.now() - t0;
				resolve(response.response);
				if (retryCounter > 0) console.debug('Deezer API request fulfilled after',
					retryCounter, 'retries and', quotaCounter, 'postponements in', dt, 'ms');
			  } else if (response.response.error.code == 4) {
				setTimeout(requestInternal, 100);
				console.warn('Deezer API semaphore failed:', queueSnapshot, dzApiTimeFrame, ++retryCounter);
			  } else reject(response.response.error.message);
			},
			onerror: response => { reject(defaultErrorHandler(response)) },
			ontimeout: response => { reject(defaultTimeoutHandler(response)) },
		  }); else {
			setTimeout(requestInternal, dzApiTimeFrame.timeStamp + safeTimeFrame - requestStart);
			++quotaCounter;
		  }
		}
	  }) : Promise.reject('No API endpoint');
	}
	function queryDiscogsAPI(endPoint, params) {
	  return endPoint ? setSession().then(auth => queryGenericAPI('api.discogs.com', endPoint, params, { 'Authorization': auth }))
	  	: Promise.reject('No API endpoint');

	  function setSession() {
		return Promise.resolve('Discogs key="' + discogs_key + '", secret="' + discogs_secret + '"');
		//return Promise.resolve('Discogs token="' + discogs_token + '"');
		const oauthNonce = randomString(64), userAgent = 'Upload Assistant.js/1.0';
		// https://www.discogs.com/developers#page:authentication,header:authentication-discogs-auth-flow
		return globalXHR('https://api.discogs.com/oauth/request_token', { method: 'HEAD', headers: {
		  'Content-Type': 'application/x-www-form-urlencoded',
		  'Authorization': 'OAuth oauth_consumer_key="' + discogs_key + '", oauth_nonce="' + oauthNonce + '", ' +
			  'oauth_signature="' + discogs_secret + '&", oauth_signature_method="PLAINTEXT", ' +
			  'oauth_timestamp="' + Date.now() + '"',
		  'User-Agent': userAgent,
		} }).then(function(response) {
		  if (!/^(?:oauth_token)\s*=\s*(\S+)\b/im.text(response.responseHeaders)) return Promise.reject('invalid header');
		  var accessToken = RegExp.$1;
		  if (!/^(?:oauth_token_secret)\s*=\s*(\S+)\b/im.text(response.responseHeaders))
			  return Promise.reject('invalid header');
		  var accessTokenSecret = RegExp.$1;
		  return new Promise(function(resolve, reject) {
			GM_openInTab('https://discogs.com/oauth/authorize?oauth_token=' + accessToken, {
			  active: true,
			  insert: true,
			  setParent: true,
			}).onclose = function() {
			  // TODO: get verifier code
			  resolve(oauth_verifier);
			};
		  }).then(oauth_verifier => globalXHR('https://api.discogs.com/oauth/access_token', {method: 'POST', headers: {
			'Content-Type': 'application/x-www-form-urlencoded',
			'Authorization': 'OAuth oauth_consumer_key="' + discogs_key + '", oauth_nonce="' + oauthNonce + '", ' +
			'oauth_token="' + accessToken + '", oauth_signature="' + discogs_secret + '&", ' +
			'oauth_signature_method="PLAINTEXT", oauth_timestamp="' + Date.now() + '", ' +
			'oauth_verifier="' + oauth_verifier + '"',
			'User-Agent': userAgent,
		  } })).then(function(response) {
			if (!/^(?:oauth_token)\s*=\s*(\S+)\b/im.text(response.responseHeaders)) return Promise.reject('invalid header');
			accessToken = RegExp.$1;
			if (!/^(?:oauth_token_secret)\s*=\s*(\S+)\b/im.text(response.responseHeaders))
			  return Promise.reject('invalid header');
			accessTokenSecret = RegExp.$1;
			return 'oauth_token="' + accessToken + '", oauth_token_secret="' + accessTokenSecret + '"';
		  });
		});
	  }
	}
	function queryMusicBrainzAPI(endPoint, params) {
	  return endPoint ? queryGenericAPI('musicbrainz.org', 'ws/2/' + endPoint + '/', Object.assign({ fmt: 'json' }, params))
	  	: Promise.reject('No API endpoint');
	}
	function querySpotifyAPI(endPoint, params) {
	  return endPoint ? setOauth2Token().then(credentials => queryGenericAPI('api.spotify.com', 'v1/' + endPoint, params, {
		Authorization: credentials.token_type + ' ' + credentials.access_token,
	  })) : Promise.reject('No API endpoint');

	  function setOauth2Token() {
		try { var accessToken = JSON.parse(window.localStorage.spotifyAccessToken) } catch(e) { }
		if (isTokenValid(accessToken)) {
		  if (prefs.diag_mode) console.debug('Re-used Spotify access token:', accessToken,
			'expires at', new Date(accessToken.expires_at).toTimeString(),
			'(+' + makeTimeString((accessToken.expires_at - Date.now()) / 1000) + ')');
		  return Promise.resolve(accessToken);
		}
		if (!spotify_clientid || !spotify_clientsecret) return Promise.reject('Spotify credentials not configured');
		const data = new URLSearchParams({
		  'grant_type': 'client_credentials',
		});
		let timeStamp = Date.now();
		return globalXHR('https://accounts.spotify.com/api/token', { responseType: 'json', headers: {
		  Authorization: 'Basic ' + btoa(spotify_clientid + ':' + spotify_clientsecret),
		} }, data).then(function(response) {
		  accessToken = response.response;
		  if (accessToken.timestamp) accessToken.timestamp -= tzOffset;
		  	else accessToken.timestamp = timeStamp;
		  if (accessToken.expires_at) accessToken.expires_at -= tzOffset;
		  	else accessToken.expires_at = accessToken.timestamp + accessToken.expires_in * 1000;
		  if (!isTokenValid(accessToken)) {
			console.warn('Received invalid Spotify token:', accessToken);
			return Promise.reject('invalid token received');
		  }
		  window.localStorage.spotifyAccessToken = JSON.stringify(accessToken);
		  if (prefs.diag_mode) console.debug('Spotify access token successfully set:', accessToken,
			(Date.now() - accessToken.timestamp) / 1000);
		  return accessToken;
		});
	  }

	  function isTokenValid(accessToken) {
		return typeof accessToken == 'object' && accessToken.token_type && accessToken.access_token
		  && accessToken.expires_at >= Date.now() + oauth2timeReserve * 1000;
	  }
	}
	function queryLastFmAPI(method, params) {
	  return method ? lastfm_api_key ? queryGenericAPI('ws.audioscrobbler.com', '2.0/', Object.assign({
		method: method,
		api_key: lastfm_api_key,
		format: 'json',
	  }, params || {})) : Promise.reject('Last.fm API key not configured') : Promise.reject('No API method');
	}
	function queryTidalAPI(endPoint, params, countryCode) {
	  if (!endPoint) return Promise.reject('No API endpoint');
	  const deviceTokens = [
		/*  0 */ 'wdgaB1CilGA-S_s2', // [revoked] browser | Streams HIGH/LOW Quality over RTMP, FLAC and Videos over HTTP, but many Lossless Streams are encrypted.
		/*  1 */ '4zx46pyr9o8qZNRw', // [revoked] browser(?) | other quality
		/*  2 */ 'kgsOOmYk3zShYrNP', // [invalid] Android | All Streams are HTTP Streams. Correct numberOfVideos in Playlists (best Token to use)
		/*  3 */ 'GvFhCVAYp3n43EN3', // [invalid] iOS | Same as Android Token, but uses ALAC instead of FLAC
		/*  4 */ '_DSTon1kC8pABnTw', // [working] iOS | Same as Android Token, but uses ALAC instead of FLAC
		/*  5 */ '4zx46pyr9o8qZNRw', // [revoked] native | Same as Android Token, but FLAC streams are encrypted
		/*  6 */ 'BI218mwp9ERZ3PFI', // [invalid] audirvana | Like Android Token, supports MQA, but returns 'numberOfVideos = 0' in Playlists
		/*  7 */ 'wc8j_yBJd20zOmx0', // [working] amarra | Like Android Token, but returns 'numberOfVideos = 0' in Playlists
		/*  8 */ 'P5Xbeo5LFvESeDy6', // [revoked] Like Android Token, but returns 'numberOfVideos = 0' in Playlists
		/*  9 */ '_KM2HixcUBZtmktH', // [revoked] Same as previous
		/* 10 */ 'oIaGpqT_vQPnTr0Q', // [revoked] Same, but uses RTMP for HIGH/LOW Quality
		/* 11 */ 'PL-KYllTy1qPbCAk', // [working]
	  ];
	  let tokenIndex = 7;
	  if (typeof params != 'object') params = { };
	  params.deviceType = 'BROWSER';
	  params.countryCode = countryCode;
	  return setSession().then(function(session) {
		if (!params.countryCode) params.countryCode = session.countryCode || 'US';
		return { 'X-Tidal-SessionId': session.sessionId };
	  }).catch(function(reason) {
		console.warn('Tidal login failed:', reason);
		return setOauth2Token().then(function(token) {
		  if (!params.countryCode) params.countryCode = token.user.countryCode || 'US';
		  return { 'Authorization': token.token_type + ' ' + token.access_token };
		});
	  }).then(header => queryGenericAPI('api.tidal.com', 'v1/' + endPoint, params, header), function(reason) {
		if (!params.countryCode) params.countryCode = 'US';
		params.token = deviceTokens[tokenIndex];
		return queryGenericAPI('api.tidal.com', 'v1/' + key, params);
	  });

	  function setOauth2Token() {
		if (window.localStorage.tidalAccessToken) try {
		  var accessToken = JSON.parse(window.localStorage.tidalAccessToken);
		  if (isTokenValid(accessToken)) {
			if (prefs.diag_mode) console.debug('Re-used Tidal access token:', accessToken,
				'expires at', new Date(accessToken.expires_at).toTimeString(),
				'(+' + makeTimeString((accessToken.expires_at - Date.now()) / 1000) + ')');
			return Promise.resolve(accessToken);
		  }
		} catch(e) { }
		if (!prefs.tidal_userid || !prefs.tidal_userpassword) return Promise.reject('incomplete account configuration');
		return getClientId().then(function(clientId) {
		  const timeStamp = Date.now(),
				scopes = ['r_usr', 'w_usr'],
				clientKey = getClientKey(),
				state = 'TIDAL_' + (timeStamp + tzOffset) + '_' + randomString(64), //urlEncode(btoa(String.fromCharCode.apply(null, crypto.getRandomValues(new Uint8Array(64))))),
				codeVerifier = randomString(128), //urlEncode(btoa(crypto.getRandomValues(new Uint8Array(100)))).slice(0, 128),
				codeChallenge = urlEncode(CryptoJS.SHA256(codeVerifier).toString(CryptoJS.enc.Base64));
		  let params = new URLSearchParams({
			app_mode: 'android', //'desktop' / 'web'
			client_id: clientId,
			client_unique_key: clientKey,
			code_challenge: codeChallenge,
			code_challenge_method: 'S256',
			lang: 'en',
			redirect_uri: 'tidal://login/auth',
			response_type: 'code',
			restrict_signup: false,
			scope: scopes.join(' '),
			state: state,
			//utm_banner: 'na',
			//utm_campaign: 'na',
			//utm_content: 'left_menu',
			//utm_medium: 'desktop_player',
			//utm_source: 'tidal',
		  }), payLoad, referer;
		  return globalXHR('https://login.tidal.com/authorize?' + params, { method: 'HEAD' }).then(function(response) {
			if (!/\b(?:token)=(.+?)(?=;)/m.test(response.responseHeaders)) return Promise.reject('invalid header');
			referer = response.finalUrl;
			payLoad = new URLSearchParams({
			  _csrf: RegExp.$1,
			  email: prefs.tidal_userid,
			  password: prefs.tidal_userpassword,
			});
			if (/\b(?:sessionV2)=(.+?)(?=;)/m.test(response.responseHeaders)) try {
			  var sessionV2 = JSON.parse(atob(RegExp.$1));
			  if (prefs.diag_mode) console.debug('sessionV2=', sessionV2);
			} catch(e) { console.warn('Failed to decode session v2', e) }
// 			return globalXHR('https://login.tidal.com/email?' + params, {
// 			  responseType: 'json',
// 			  headers: { 'Referer': referer },
// 			}, payLoad);
// 		  }).then(function(response) {
// 			if (!/^(?:token)=([^;\s$]+)/im.test(response.responseHeaders)) return Promise.reject('invalid header');
// 			payLoad.set('_csrf', RegExp.$1);
			return globalXHR('https://login.tidal.com/email/user/existing?' + params, {
			  responseType: 'json',
			  headers: { 'Referer': referer },
			}, payLoad);
		  }).then(function(response) {
			var redirectUri = new URL(response.response.redirectUri);
			payLoad = new URLSearchParams({
			  client_id: clientId,
			  client_unique_key: clientKey,
			  code: redirectUri.searchParams.get('code'),
			  code_verifier: codeVerifier,
			  scope: scopes.join(' '),
			  grant_type: 'authorization_code',
			  redirect_uri: redirectUri.href,
			});
			return globalXHR('https://login.tidal.com/oauth2/token', {
			  responseType: 'json',
			  headers: { 'Referer': referer },
			}, payLoad);
		  }).then(function(response) {
			if (typeof response.response != 'object') return Promise.reject('invalid token');
			accessToken = response.response;
			if (accessToken.timestamp) accessToken.timestamp -= tzOffset;
				else accessToken.timestamp = timeStamp;
			if (accessToken.expires_at) accessToken.expires_at -= tzOffset;
				else accessToken.expires_at = accessToken.timestamp + accessToken.expires_in * 1000;
			if (!isTokenValid(accessToken)) {
			  console.warn('Received invalid Tidal token:', accessToken);
			  return Promise.reject('invalid token received');
			}
			window.sessionStorage.tidalAccessToken = JSON.stringify(accessToken);
			console.debug('Tidal access token successfully set:', accessToken, (Date.now() - accessToken.timestamp) / 1000);
			return accessToken;
		  });
		});
	  }
	  function setSession() {
		//return Promise.reject('skipped in favour of Oauth2');
		if (window.sessionStorage.tidalSession) try {
		  var session = JSON.parse(window.sessionStorage.tidalSession);
		  if (isSessionValid(session)) {
			if (prefs.diag_mode) console.debug('Re-used Tidal session:', session);
			return Promise.resolve(session);
		  }
		} catch(e) { }
		if (!prefs.tidal_userid || !prefs.tidal_userpassword) return Promise.reject('incomplete account configuration');
		let payLoad = new URLSearchParams({
		  username: prefs.tidal_userid,
		  password: prefs.tidal_userpassword,
		  clientUniqueKey: getClientKey(),
		  clientVersion: '1.0',
		  token: deviceTokens[tokenIndex],
		});
		return globalXHR('https://api.tidal.com/v1/login/username', { // 'https://api.tidalhifi.com/v1/login/username'
		  responseType: 'json',
		  //headers: { 'X-Tidal-Token': xTidalToken },
		}, payLoad).then(function(response) {
		  if (!isSessionValid(session = response.response)) return Promise.reject('invalid session');
		  if (prefs.diag_mode) console.debug('Tidal session successfully established:', session);
		  window.sessionStorage.tidalSession = JSON.stringify(session);
		  return session;
		});
	  }
	  function uuidv4() {
		return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
		  var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
		  return v.toString(16);
		});
	  }
	  function urlEncode(b64str) {
		return b64str.replace(/\=/g, '').replace(/\+/g, '-').replace(/\//g, '_');
	  }
	  function getClientId() {
		if (prefs.tidal_clientid || (prefs.tidal_clientid = GM_getValue('tidal_clientid')))
		  return Promise.resolve(prefs.tidal_clientid);
		return getTidalSecrets().then(function(response) {
		  const rx = /"(\w{40})":"(\w{16})"/g;
		  if ((i = response.responseText.match(rx)) == null || !rx.test(i.shift()))
			return Promise.reject('client id detection fail');
		  GM_setValue('tidal_clientid', prefs.tidal_clientid = RegExp.$2);
		  if (prefs.diag_mode) console.debug('Successfully configured Tidal client Id:', prefs.tidal_clientid);
		  return prefs.tidal_clientid;
		}).catch(function(reason) {
		  reason = `Client Id auto detection failed (${reason}), set it manually (tidal_clientid)`;
		  alert(reason);
		  return Promise.reject(reason);
		});
	  }
	  function getClientKey() {
		if (!prefs.tidal_clientkey && !(prefs.tidal_clientkey = GM_getValue('tidal_clientkey')))
		  GM_setValue('tidal_clientkey', prefs.tidal_clientkey = uuidv4());
		return prefs.tidal_clientkey;
	  }
	  function getTidalSecrets() {
		const origin = 'https://listen.tidal.com';
		return globalXHR(origin + '/login').then(function(response) {
		  var appLink = response.document.querySelector('body > script[src]:last-of-type');
		  return appLink == null ? Promise.reject('invalid document format')
			  : globalXHR(origin + appLink.src.replace(document.location.origin, ''), { responseType: 'text' });
		});
	  }
	  function isTokenValid(accessToken) {
		return typeof accessToken == 'object' && accessToken.token_type && accessToken.access_token
		  && accessToken.expires_at >= Date.now() + oauth2timeReserve * 1000;
	  }
	  function isSessionValid(session) {
		return session && typeof session == 'object' && session.userId > 0 && session.sessionId;
	  }
	  function getClientToken() {
		if (prefs.tidal_token || (prefs.tidal_token = GM_getValue('tidal_token'))) return Promise.resolve(prefs.tidal_token);
		return getTidalSecrets().then(function(response) {
		  if (!/"(\w{40})":"(\w{40})"/.test(response.responseText)) return Promise.reject('not found');
		  GM_setValue('tidal_token', prefs.tidal_token = RegExp.$2);
		  if (prefs.diag_mode) console.debug('Successfully configured Tidal token:', prefs.tidal_token);
		  return prefs.tidal_token;
		}).catch(function(reason) {
		  console.warn('Tidal token detection fail (' + reason + ')');
		  return undefined;
		});
	  }
	}
	function queryBeatsourceAPI(endPoint, params, countryCode) {
	  if (!endPoint) return Promise.reject('No API endpoint');
	  if (!urlParser.test(endPoint)) endPoint = 'v4/catalog/' + endPoint;
	  return setOauth2Token().then(token => queryGenericAPI('api.beatsource.com', endPoint, params, {
		'Authorization': token.token_type + ' ' + token.access_token,
	  }));

	  function setOauth2Token() {
		try {
		  var accessToken = JSON.parse(window.localStorage.beatsourceAccessToken);
		  if (isTokenValid(accessToken)) {
			if (prefs.diag_mode) console.debug('Re-used Beatsource access token:', accessToken,
				'expires at', new Date(accessToken.expires_at).toTimeString(),
				'(+' + makeTimeString((accessToken.expires_at - Date.now()) / 1000) + ')');
			return Promise.resolve(accessToken);
		  }
		} catch(e) { }
		let timeStamp = Date.now();
		return globalXHR('https://www.beatsource.com/').then(function(response) {
		  accessToken = response.document.getElementById('__NEXT_DATA__');
		  if (accessToken == null) return Promise.reject('Beatsource access token is missing');
		  accessToken = JSON.parse(accessToken.text).props.rootStore.authStore.user;
		  if (accessToken.timestamp) accessToken.timestamp -= tzOffset;
		  	else accessToken.timestamp = timeStamp;
		  if (accessToken.expires_at) accessToken.expires_at -= tzOffset;
		  	else accessToken.expires_at = accessToken.timestamp + accessToken.expires_in * 1000;
		  if (!isTokenValid(accessToken)) {
			console.warn('Received invalid Beatsource token:', accessToken);
			return Promise.reject('invalid token received');
		  }
		  window.localStorage.beatsourceAccessToken = JSON.stringify(accessToken);
		  console.debug('Beatsource access token successfully set:', accessToken, (Date.now() - accessToken.timestamp) / 1000);
		  return accessToken;
		});
	  }
	  function isTokenValid(accessToken) {
		return typeof accessToken == 'object' && accessToken.token_type && accessToken.access_token
		  && accessToken.expires_at >= Date.now() + oauth2timeReserve * 1000;
	  }
	}
	function queryNeteaseAPI(endPoint, params) {
	  return endPoint ? queryGenericAPI('music.163.com', 'api/' + endPoint, params)
		.then(result => result.code == 200 ? result : Promise.reject(result.msg)) : Promise.reject('No API endpoint');
	}
	function queryBandcampAPI(endPoint, params) {
	  return endPoint ? queryGenericAPI('bandcamp.com', 'api/' + endPoint, params) : Promise.reject('No API endpoint');
	}
	function queryGenericAPI(hostName, endPoint, params, headers) {
	  return endPoint ? new Promise(function(resolve, reject) {
		let url = urlParser.test(endPoint) ? new URL(endPoint) : new URL(endPoint, 'https://' + hostName),
			query = new URLSearchParams(params);
		if (Array.from(query).length > 0) url.search = query;
		if (typeof headers != 'object') headers = {};
		headers.Accept = 'application/json';
		//if (prefs.diag_mode) console.debug('queryGenericAPI(...) requesting URL', url.href);
		queryInternal();

		function queryInternal() {
		  GM_xmlhttpRequest({ method: 'GET', url: url, responseType: 'json', headers: headers,
			onload: function(response) {
			  //if (prefs.diag_mode) console.debug('queryGenericAPI', domain, key, params, headers, response);
			  if (response.status >= 200 && response.status < 400) resolve(response.response);
			  else reject(defaultErrorHandler(response));
			},
			onerror: response => { reject(defaultErrorHandler(response)) },
			ontimeout: response => { reject(defaultTimeoutHandler(response)) },
		  });
		}
	  }) : Promise.reject(new Error('Keyword missing'));
	}

	function loadItunesMetadata(urlOrId) {
	  return (function() {
		function getAppleId(urlOrId) {
		  var appleId = parseInt(urlOrId) || itunesRlsParser.test(urlOrId) && parseInt(RegExp.$1);
		  return appleId ? Promise.resolve(appleId) : Promise.reject('Aplpe Id cannot be determined');
		}

		return /^(?:https):\/\/apple\.co\//i.test(urlOrId) ? urlResolver(urlOrId).then(url => getAppleId(url)) : getAppleId(urlOrId);
	  })().then(appleId => globalXHR('https://music.apple.com/album/' + appleId).then(function(response) {
		var params = response.document.querySelector('meta[name="desktop-music-app/config/environment"][content]');
		if (params != null) try { params = JSON.parse(decodeURIComponent(params.content)) } catch(e) {
		  console.warn('Apple desktop environment invalid format:', e, params.content);
		  return Promise.reject('Apple desktop environment invalid format');
		} else return Promise.reject('Desktop environment not located');
		if (prefs.diag_mode) console.debug('Got Apple Music desktop environment:', params);
		if (!params.MEDIA_API.token) return Promise.reject('Apple access token not found');
		let query = new URLSearchParams({
		  include: 'tracks,artists',
		  l: 'en-US',
		});
		return globalXHR(params.MUSIC.BASE_URL + '/catalog/us/albums/' + appleId + '?' + query, { responseType: 'json', headers: {
		  'Referer': response.finalUrl,
		  'Authorization': 'Bearer ' + params.MEDIA_API.token,
		} }).then(function(response2) {
		  var album = response2.response.data[0];
		  album.description = response.document.querySelector('div.content-modal__content-container')
			|| response.document.querySelector('div.product-page-header__notes span'),
		  album.url = response.finalUrl;
		  if (album.attributes.artwork) album.attributes.artwork.realUrl = album.attributes.artwork.url
			  .replace('{w}', album.attributes.artwork.width).replace('{h}', album.attributes.artwork.height);
		  if (prefs.diag_mode) console.debug('Apple Music metadata loaded:', album);
// 		  query.set('include', 'artists,albums');
// 		  Promise.all(album.relationships.tracks.data.map(track => globalXHR(params.MUSIC.BASE_URL + '/catalog/us/songs/' + track.id + '?' + query, { responseType: 'json', headers: {
// 			'Referer': response.finalUrl,
// 			'Authorization': 'Bearer ' + params.MEDIA_API.token,
// 		  } }).then(response => response.response))).then(tracks => { console.debug('Apple Music tracks received:', tracks) })
// 		  .catch(reason => { console.error(reason) });
		  return album;
		});
	  }));
	}
	function loadHDtracksMetadata(urlOrId, entity = undefined) {
	  if (!urlOrId) return Promise.reject('invalid argument');
	  if (/^\w+$/.test(urlOrId)) var id = RegExp.lastMatch.toString();
	  if (!id || !entity) try {
		if (!(urlOrId instanceof URL)) urlOrId = new URL(urlOrId);
		if (['hdtracks.com', 'www.hdtracks.com'].some(hostname => urlOrId.hostname == hostname)
			&& /^#\/(\w+)\/(\w+)\b/i.test(urlOrId.hash)) { entity = RegExp.$1; id = RegExp.$2 }
	  } catch(e) { console.warn(e) }
	  if (!id || !entity) return Promise.reject('invalid arguments');
	  return setSession().then(function(session) {
		urlOrId = 'https://hdtracks.azurewebsites.net/api/v1/' + entity + '/' + id;
		if (Object.keys(session).length > 0) urlOrId += '&' + new URLSearchParams(session);
		return fetch(urlOrId).then(response => response.json()).catch(function(reason) {
		  console.warn('fetch(...) failed:', reason);
		  return globalXHR(urlOrId, { responseType: 'json', fetch: true }).then(response => response.response);
		}).then(function(result) {
		  if (result.status.toLowerCase() != 'ok') return Promise.reject(result.status);
		  if (prefs.diag_mode) console.debug('HDtracks', entity, 'info loaded:', result);
		  return result;
		});
	  });

	  function setSession() {
		return Promise.resolve({
		  //token: 123456789,
		});
	  }
	}
	function loadMoraMetadata(webUrl) {
	  return /^(?:https?):\/\/(?:\w+\.)*mora\.jp\/package\//i.test(webUrl) ? globalXHR(webUrl).then(function(response1) {
		var appArguments = response1.document.querySelector('meta[name="msApplication-Arguments"][content]');
		if (appArguments == null) return Promise.reject('Mora.jp: unexpected page format');
		appArguments = JSON.parse(appArguments.content);
		var materialNo = appArguments.materialNo.toString().padStart(10, '0'), offset = 0;
		var packageUrl = 'https://cf.mora.jp/contents/' + [
		  appArguments.type, appArguments.mountPoint, appArguments.labelId,
		].concat([4, 3, 3].map(length => materialNo.slice(offset, offset += length))).join('/') + '/';
		return globalXHR(packageUrl + 'packageMeta.jsonp', { responseType: 'text' }).then(function(response2) {
		  return /^\s*\w+\(\s*(\{[\S\s]+\})\s*\);\s*$/.test(response2.responseText) ? Object.assign(JSON.parse(RegExp.$1), {
			mountPoint: appArguments.mountPoint,
			webUrl: response1.finalUrl.replace(/[\?\#].*$/, ''),
		  }) : Promise.reject('Mora.jp: Unexpected package meta format');
		});
	  }) : Promise.reject('Not mora.jp site URL');
	}
	function parseLastFm(album) {
	  if (typeof album != 'object') return Promise.reject('invalid object')
	  var identifiers = {}, description = [];
	  if (album.id) identifiers.LASTFM_ID = album.id;
	  if (album.mbid) identifiers.MBID = album.mbid;
	  if (album.wiki && album.wiki.summary) description.push(album.wiki.summary);
	  if (album.wiki && album.wiki.content) description.push(album.wiki.content);
	  description = description.join('\n\n');
	  var genres = album.tags.tag.map(tag => tag.name);
	  var imgUrl = ['mega', 'extralarge', '', 'large', 'medium', 'small'].reduce(function(acc, size) {
		return acc || album.image.find(image => image.size == size && urlParser.test(image['#text']));
	  }, undefined);
	  if (imgUrl) imgUrl = imgUrl['#text'].replace(/\/\d+(?:x\d+|s)\//i, '/');
	  return album.tracks.track.map((track, ndx) => ({
		artist: album.artist,
		album: album.name,
		genre: genres.join('; ') || undefined,
		title: track.name,
		track_number: ndx + 1,
		track_artist: !artistsMatch(track.artist.name, album.artist) ? track.artist.name : undefined,
		duration: parseFloat(track.duration) || undefined,
		url: album.url,
		description: description || undefined,
		identifiers: identifiers,
		cover_url: imgUrl,
	  }));
	}

	function getMusicBrainzCovers(mbid) {
	  return searchInternal('release', mbid).then(covers => covers || searchMaster(), searchMaster);

	  function searchInternal(entity, mbid) {
		return new Promise((resolve, reject) => GM_xmlhttpRequest({
		  method: 'GET',
		  url: 'https://coverartarchive.org/' + entity + '/' + mbid,
		  responseType: 'json',
		  onload: function(response) {
			if (response.status == 404) return resolve(null);
			if (response.status < 200 || response.status >= 400) return reject(defaultErrorHandler(response));
			var images = response.response.images
			  .filter(image => urlParser.test(image.image) && image.isfront
				  || Array.isArray(image.types) && image.types.includesCaseless('Front'))
			  .map(image => image.image);
			resolve(images.length > 0 ? [response.response.release, images] : null);
		  },
		  onerror: error => reject(defaultErrorHandler(error)),
		  ontimeout: timeout => reject(defaultTimeoutHandler(timeout)),
		}));
	  }
	  function searchMaster() {
		return queryMusicBrainzAPI('release/' + mbid, { inc: 'release-groups' })
		  .then(release => searchInternal('release-group', release['release-group'].id));
	  }
	}

	function tidalRlsParser(url) {
	  return /^(?:https?):\/\/(?:\w+\.)*tidal\.com\//i.test(url)
	  	&& (/\/album\/(\d+)\b/i.test(url) || /\b(?:albumId)=(\d+)\b/i.test(url));
	}
  } // fillFromText_Music

  function fillFromText_Apps(weak = false) {
	if (messages != null) messages.parentNode.removeChild(messages);
	if (!urlParser.test(clipBoard.value)) {
	  addMessage('only valid URL for this category', 'critical');
	  return false;
	}
	sourceUrl = RegExp.$1;
	var description, tags = new TagManager();
	if (sourceUrl.toLowerCase().includes('://sanet')) return globalXHR(sourceUrl).then(function(response) {
	  i = response.document.querySelector('h1.item_title > span');
	  var title = i == null ? undefined : i.textContent
		.replace(/\s+\((?:x|ia|em)(?:64)\)/ig, ' (64-bit)')
		.replace(/\s+\(x(?:86|32)\)/ig, ' (32-bit)')
		.replace(/\s+(?:Build)\s+(\d+)\b/g, ' build $1')
		.replace(/\s+(?:Multilingual|Multi(?:-|\s)*lang(?:uage)?)\b/g, ' multilingual');
	  description = html2php(response.document.querySelector('section.descr'), response.finalUrl).trim();
	  if (/\s*^[ \t]*(?:\[i\]\[\/i\])?Homepage\s*$.*/im.test(description)) description = RegExp.leftContext;
	  description = description.split(/[ \t]*\r?\n/).slice(6).map(line => line.trim()).join('\n')
		.replace(/^[ \t]*(?:\[i\]\[\/i\])?Screenshots:?\s*/igm, '')
		.replace(/^[ \t]*(?:\[i\]\[\/i\])?(\[b\]Release\s+Notes:?\[\/b\])(?:[ \t]*\r?\n)+/igm, '$1\n')
		.replace(/\[hr\]/ig, '\n');
	  ref = response.document.querySelector('section.descr > div.release-info');
	  var releaseInfo = ref != null && ref.textContent.trim();
	  if (/\b(?:Languages?)\s*:\s*(.*?)\s*(?:$|\|)/i.exec(releaseInfo) != null)
		description += '\n\n[b]Languages:[/b]\n' + RegExp.$1;
	  if ((ref = response.document.querySelector('div.txtleft > a')) != null) {
		description += '\n\n[b]Product page:[/b]\n[url]' +
		  removeRedirect(ref.pathname.toLowerCase().startsWith('/confirm/url/') && urlParser.test(ref.textContent) ?
			ref.textContent.trim() : ref.href) + '[/url]';
	  }
	  writeDescription(description.collapseGaps());
	  if ((ref = response.document.querySelector('section.descr > div.center > a.mfp-image')) != null) {
		setCover(ref.href);
	  } else {
		ref = response.document.querySelector('section.descr > div.center > img[data-src]');
		if (ref != null) setCover(ref.dataset.src);
	  }
	  var internalTags = Array.from(response.document.querySelectorAll('ul.item_tags_list > li > a[rel="tag"]'))
	  	.map(elem => elem.textContent.toLowerCase().trim());
	  if ((ref = response.document.querySelector('a.cat:last-of-type > span')) != null) {
		if (ref.textContent.toLowerCase() == 'windows') {
		  tags.add('apps.windows');
		  if (/\b(?:(?:x|ia|em)64)\b/i.test(releaseInfo) || /\(64[-\s]*bit\)/i.test(title)) tags.add('win64');
		  if (/\b(?:x86|x32)\b/i.test(releaseInfo) || /\(32[-\s]*bit\)/i.test(title)) tags.add('win32');
		}
		if (ref.textContent.toLowerCase() == 'macos') tags.add('apps.mac');
		if (ref.textContent.toLowerCase() == 'linux' || ref.textContent.toLowerCase() == 'unix') tags.add('apps.linux');
		if (ref.textContent.toLowerCase() == 'android') tags.add('apps.android');
		if (ref.textContent.toLowerCase() == 'ios') tags.add('apps.ios');
	  }
	  if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
	  if (title && !/\(\d+-?bit\)/i.test(title)) {
		if (tags.includes('win64') && !tags.includes('win32')) title += ' (64-bit)';
		if (tags.includes('win32') && !tags.includes('win64')) title += ' (32-bit)';
	  }
	  if (elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]')))
		ref.value = title || '';
	});
	if (!weak) {
	  addMessage('this domain not supported', 'critical');
	  clipBoard.value = '';
	}
	return Promise.reject('this domain not supported');
  } // fillFromText_Apps

  function fillFromText_Ebooks(weak = false) {
	if (messages != null) messages.parentNode.removeChild(messages);
	if (!urlParser.test(clipBoard.value)) {
	  addMessage('only URL accepted for this category', 'critical');
	  return Promise.reject('only URL accepted for this category');
	}
	sourceUrl = new URL(RegExp.$1);
	var params = new URLSearchParams(sourceUrl.search), description, tags = new TagManager;
	if (sourceUrl.hostname.endsWith('martinus.cz') || sourceUrl.hostname.endsWith('martinus.sk')) return globalXHR(sourceUrl).then(function(response) {
	  function get_detail(x, y) {
		var ref = response.document.querySelector('section#details > div > div > div:first-of-type > div:nth-child(' +
		  x + ') > dl:nth-child(' + y + ') > dd');
		return ref != null ? ref.textContent.trim() : null;
	  }

	  i = response.document.querySelectorAll('article > ul > li > a');
	  if (i.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		description = joinAuthors(i);
		if ((i = response.document.querySelector('article > h1')) != null) description += ' – ' + i.textContent.trim();
		i = response.document.querySelector('div.bar.mb-medium > div:nth-child(1) > dl > dd > span');
		if (i != null && (i = extractYear(i.textContent))) description += ' (' + i + ')';
		ref.value = description;
	  }
	  ref = response.document.querySelector('section#description > div');
	  if (ref != null) description = html2php(ref, response.finalUrl).replace(/^\s*\[img\].*?\[\/img\]\s*/i, '').trim();
	  if (description.length > 0 && !description.includes('[quote]')) description = '[quote]' + description + '[/quote]';
	  const translation_map = [
		[/\b(?:originál)/i, 'Original title'],
		[/\b(?:datum|dátum|rok)\b/i, 'Release date'],
		[/\b(?:katalog|katalóg)/i, 'Catalogue #'],
		[/\b(?:stran|strán)\b/i, 'Page count'],
		[/\bjazyk/i, 'Language'],
		[/\b(?:nakladatel|vydavatel)/i, 'Publisher'],
		[/\b(?:doporuč|ODPORÚČ)/i, 'Age rating'],
	  ];
	  response.document.querySelectorAll('section#details > div > div > div:first-of-type > div > dl').forEach(function(detail) {
		var lbl = detail.children[0].textContent.trim();
		var val = detail.children[1].textContent.trim();
		if (/\b(?:rozm)/i.test(lbl) || /\b(?:vazba|vázba)\b/i.test(lbl)) return;
		translation_map.forEach(k => { if (k[0].test(lbl)) lbl = k[1] });
		if (/\b(?:ISBN)\b/i.test(lbl)) {
		  let wc = 'https://www.worldcat.org/isbn/' + detail.children[1].textContent.trim();
		  val = '[url=' + wc + ']' + detail.children[1].textContent.trim() + '[/url]';
		  findOCLC(wc);
// 		} else if (/\b(?:ISBN)\b/i.test(lbl)) {
// 		  val = '[url=https://www.goodreads.com/search/search?q=' + detail.children[1].textContent.trim() +
// 			'&search_type=books]' + detail.children[1].textContent.trim() + '[/url]';
		}
		description += '\n[b]' + lbl + ':[/b] ' + val;
	  });
	  description += `\n\n[b]More info and reviews:[/b]\n[url]${response.finalUrl}[/url]`;
	  writeDescription(description.collapseGaps());
	  if ((i = response.document.querySelector('a.mj-product-preview > img')) != null)
		setCover(i.src.replace(/\?.*/, ''));
	  else if ((i = response.document.querySelector('head > meta[property="og:image"][content]')) != null)
		setCover(i.content.replace(/\?.*/, ''));
	  response.document.querySelectorAll('dd > ul > li > a').forEach(x => { tags.add(x.textContent) });
	  if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
	}); if (sourceUrl.hostname.endsWith('goodreads.com')) return globalXHR(sourceUrl).then(function(response) {
	  var authors = response.document.querySelectorAll('div#bookAuthors > span[itemprop="author"] a.authorName > span[itemprop="name"]');
	  if (authors.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		let titleAuthors = Array.from(authors).filter(span => span.parentNode.parentNode.querySelector('span.role') == null);
		if (titleAuthors.length <= 0) titleAuthors = Array.from(authors);
		description = titleAuthors.length > 0 ? joinAuthors(titleAuthors) + ' – ' : '';
		if ((i = response.document.querySelector('h2#bookSeries')) != null
			&& (i = i.textContent.trim().replace(/^\((.*)\)$/, '$1'))) description += i + ': ';
		if ((i = response.document.querySelector('h1#bookTitle')) != null) {
		  description += i.textContent.trim();
		  ref.title = i.textContent.trim();
		}
		if ((i = response.document.querySelector('div#details > div.row:nth-of-type(2)')) != null
			&& (i = extractYear(i.textContent))) description += ' (' + i + ')';
		ref.value = description;
	  }
	  var otherAuthors = [];
	  authors.forEach(function(span) {
		var role = span.parentNode.parentNode.querySelector('span.role');
		if (role == null) return;
		role = role.textContent.trim();
		if (/^\((.+)\)$/.test(role)) role = RegExp.$1;
		otherAuthors.push(`[b]${role}:[/b] [url=https://www.goodreads.com${span.parentNode.pathname}]${span.textContent.trim()}[/url]`);
	  });
	  description = undefined;
	  response.document.querySelectorAll('div#description span:last-of-type')
		.forEach(node => { description = html2php(node, response.finalUrl).trim() });
	  if (description && !description.includes('[quote]'))
		description = '[quote]' + description.collapseGaps() + '[/quote]';
	  response.document.querySelectorAll('div#details > div.row')
		.forEach(div => { description += '\n' + strip(div.textContent) });
	  if (description) description += '\n'; else description = '';
	  if (otherAuthors.length > 0) description += '\n' + otherAuthors.join('\n');
	  response.document.querySelectorAll('div#bookDataBox > div.clearFloats').forEach(function(detail) {
		var key = detail.querySelector('div.infoBoxRowTitle'), desc = detail.querySelector('div.infoBoxRowItem');
		if (key == null || desc == null) {
		  console.warn('Goodreads assertion failed:', detail);
		  return;
		}
		key = key.textContent.trim();
		var value = strip(desc.textContent);
		if (/\b(?:ISBN)\b/i.test(key) && (/\b(\d{13})\b/.test(value) || /\b(\d{10})\b/.test(value))) {
		  let wc = 'https://www.worldcat.org/isbn/' + RegExp.$1;
		  value = `[url=${wc}]${value}[/url]`;
		  findOCLC(wc);
		} else value = strip(html2php(desc, response.finalUrl), ', ');
		if (value) description += `\n[b]${key}:[/b] ${value}`;
	  });
	  if ((ref = response.document.querySelector('span[itemprop="ratingValue"]')) != null)
		description += `\n[b]Rating:[/b] ${Math.round(parseFloat(ref.firstChild.textContent) * 20)}%`;
	  sourceUrl = new URL(response.finalUrl);
// 	  if ((ref = response.document.querySelector('div#buyButtonContainer > ul > li > a.buttonBar')) != null) {
// 		let u = new URL(ref.href);
// 		description += '\n[url=' + sourceUrl.origin + u.pathname + '?' + u.search + ']Libraries[/url]';
// 	  }
	  description += `\n\n[b]More info and reviews:[/b]\n[url]${sourceUrl.origin}${sourceUrl.pathname}[/url]`;
	  response.document.querySelectorAll('div.clearFloats.bigBox').forEach(function(bigBox) {
		if (bigBox.id == 'aboutAuthor' && (ref = bigBox.querySelector('h2 > a')) != null) {
		  description += `\n\n[b][url=https://www.goodreads.com${ref.pathname}]${ref.textContent.trim()}[/url][/b]`;
		  //if ((ref = bigBox.querySelector('div.bigBoxBody a > div[style*="background-image"]')) != null)
		  if ((ref = bigBox.querySelector('div.bookAuthorProfile__about > span[id]:last-of-type')) != null)
			description += '\n' + html2php(ref, response.finalUrl).trim().replace(/^\[i\]Librarian\s+Note:.*?\[\/i\]\s+/i, '');
// 		} else if ((ref = bigBox.querySelector('h2 > a[href^="/trivia/"]')) != null) {
// 		  description += `\n\n[b][url=https://www.goodreads.com${ref.pathname}]${ref.textContent.trim()}[/url][/b]`;
// 		  if ((ref = bigBox.querySelector('div.bigBoxContent > div.mediumText')) != null
// 			  && !/^\s*(?:No trivia)\b/.test(ref.textContent)) description += '\n' + ref.firstChild.textContent.trim();
// 		} else if ((ref = bigBox.querySelector('h2 > a[href^="/work/quotes/"]')) != null) {
// 		  description += '\n\n[b][url=' + ref.href + ']' + ref.textContent.trim() + '[/url][/b]';
// 		  bigBox.querySelectorAll('div.bigBoxContent > div.stacked > span.readable').forEach(function(quote) {
// 			description += '\n' + ref.firstChild.textContent.trim();
// 		  });
		}
	  });
	  writeDescription(description.collapseGaps());
	  if ((ref = response.document.querySelector('div.editionCover > img')) != null)
		setCover(ref.src.replace(/\?.*/, ''));
	  response.document.querySelectorAll('div.elementList > div.left')
		.forEach(tag => { tags.add(tag.textContent.trim()) });
	  if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();

	  function strip(str, joiner = undefined) {
		//console.debug('Stripping', str);
		return str.replace(/[\r\n]+/, ' ')
		 	.replace(/\s*\[url(?:=\S+?)?\]\s*\.{3,}(?:less|more)\s*\[\/url\]\s*/g, joiner || ' ')
			.replace(/\s*\.{3,}(?:less|more)\s*/g, joiner || ' ').replace(/\s{2,}/g, ' ').trim();
	  }
	}); else if (sourceUrl.hostname.endsWith('databazeknih.cz')) {
	  params.set('show', 'alldesc');
	  sourceUrl.search = params;
	  return globalXHR(sourceUrl).then(function(response) {
		i = response.document.querySelectorAll('span[itemprop="author"] > a');
		if (i != null && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		  description = joinAuthors(i);
		  if ((i = response.document.querySelector('h1[itemprop="name"]')) != null)
			description += ' – ' + i.textContent.trim();
		  i = response.document.querySelector('span[itemprop="datePublished"]');
		  if (i != null && (i = extractYear(i.textContent))) description += ' (' + i + ')';
		  ref.value = description;
		}

		ref = response.document.querySelector('p[itemprop="description"]');
		if (ref != null) description = html2php(ref, response.finalUrl).trim();
		if (description.length > 0 && !description.includes('[quote]')) description = '[quote]' + description + '[/quote]';
		const translation_map = [
		  [/\b(?:orig)/i, 'Original title'],
		  [/\b(?:série)\b/i, 'Series'],
		  [/\b(?:vydáno)\b/i, 'Released'],
		  [/\b(?:stran)\b/i, 'Page count'],
		  [/\b(?:jazyk)\b/i, 'Language'],
		  [/\b(?:překlad)/i, 'Translation'],
		  [/\b(?:autor obálky)\b/i, 'Cover author'],
		];
		response.document.querySelectorAll('table.bdetail tr').forEach(function(detail) {
		  var lbl = detail.children[0].textContent.trim();
		  var val = detail.children[1].textContent.trim();
		  if (/(?:žánr|\bvazba)\b/i.test(lbl)) return;
		  translation_map.forEach(k => { if (k[0].test(lbl)) lbl = k[1] });
		  if (/\b(?:ISBN)\b/i.test(lbl) && /\b(\d+(?:-\d+)*)\b/.exec(val) != null) {
			let wc = 'https://www.worldcat.org/isbn/' + RegExp.$1.replace(/-/g, '');
			val = `[url=${wc}]${detail.children[1].textContent.trim()}[/url]`;
			findOCLC(wc);
		  }
		  description += '\n[b]' + lbl + '[/b] ' + val;
		});

		sourceUrl = new URL(response.finalUrl);
		description += `\n\n[b]More info:[/b]\n[url]${sourceUrl.origin}${sourceUrl.pathname}[/url]`;
		writeDescription(description.collapseGaps());
		if ((ref = response.document.querySelector('div#icover_mid > a')) != null) setCover(ref.href.replace(/\?.*/, ''));
			else if ((ref = response.document.querySelector('div#lbImage')) != null
				&& /\burl\("(.*)"\)/i.test(i.style.backgroundImage)) setCover(RegExp.$1.replace(/\?.*/, ''));
		response.document.querySelectorAll('h5[itemprop="genre"] > a')
		  .forEach(tag => { tags.add(tag.textContent.trim()) });
		response.document.querySelectorAll('a.tag').forEach(tag => { tags.add(tag.textContent.trim()) });
		if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
	  });
	} else if (sourceUrl.hostname.endsWith('boomkat.com') && sourceUrl.pathname.startsWith('/products/')) return globalXHR(sourceUrl).then(function(response) {
	  i = Array.from(response.document.querySelectorAll('ul.product-page-tabs > li.tab-title > a'))
	  	.filter(a => a.textContent.trim() == 'Book');
	  if (i.length <= 0) return Promise.reject('This doesn\'t appear as a book');
	  var releaseDate = i[0].dataset.releaseDate,
		  publisher = i[0].dataset.label,
		  catalogue = i[0].dataset.catalogueNumber;
	  description = (ref = response.document.querySelector('div' + i[0].hash + ' p.product-extra-info')) != null ?
		ref.textContent.trim() + '\n\n' : '';
	  if (releaseDate) description += '[b]Release date:[/b] ' + releaseDate + '\n';
	  if (publisher) description += '[b]Publisher:[/b] ' + publisher + '\n';
	  if (catalogue) description += '[b]Catalogue №:[/b] ' + catalogue + '\n';
	  if ((ref = response.document.querySelector('div.show-for-medium-up > div.product-review')) != null) {
		if (description.length > 0) description += '\n';
		description += '[quote]' + html2php(ref).trim() + '[/quote]';
	  }
	  if (description) writeDescription(description.collapseGaps());
	  i = response.document.querySelectorAll('div#right_content > h1.detail--artists > a');
	  if (i.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		description = joinAuthors(Array.from(i));
		if ((i = response.document.querySelector('div#right_content > h2.detail_album')) != null)
		  description += ' – ' + i.textContent.trim();
		if ((i = extractYear(releaseDate)) > 0) description += ' (' + i + ')';
		ref.value = description;
	  }
	  if ((ref = response.document.querySelector('img[itemprop="image"]')) != null)
		setCover(ref.src.replace(/\/large\//i, '/original/'));
	}); else if (sourceUrl.hostname.endsWith('openlibrary.org')
		&& ['books', 'works'].some(p => sourceUrl.pathname.startsWith('/' + p + '/'))) return globalXHR(sourceUrl, {
	  headers: { 'Accept-Language': 'en-US, en' },
	}).then(function(response) {
	  i = response.document.querySelectorAll('div.editionAbout h2.edition-byline > a[itemprop="author"]');
	  if (i.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		description = joinAuthors(i);
		if ((i = response.document.querySelector('div.editionAbout h1.work-title')) != null) {
		  description += ' – ' + i.textContent.trim();
		  if ((i = response.document.querySelector('div.editionAbout h2.work-subtitle')) != null
			 && i.textContent.trim().length > 0) description += ': ' + i.textContent.trim();
		}
		if ((i = response.document.querySelector('strong[itemprop="datePublished"]')) != null)
		  description += ' (' + extractYear(i.textContent) + ')';
		ref.value = description;
	  }
	  description = '';
	  response.document.querySelectorAll('div.work-description > p')
		.forEach(p => { description += '\n\n' + html2php(p, response.finalUrl).trim() });
	  if (!description) response.document.querySelectorAll('div.book-description-content > p')
		.forEach(p => { description += '\n\n' + html2php(p, response.finalUrl).trim() });
	  if (!description) response.document.querySelectorAll('div.editionAbout > p')
		.forEach(p => { description += '\n\n' + html2php(p, response.finalUrl).trim() });
	  if (description && !description.includes('[quote]'))
		description = '[quote]' + description.collapseGaps() + '[/quote]';
	  response.document.querySelectorAll('div.editionAbout > div.section').forEach(function(div) {
		if (div.classList.length > 1) return;
		description += '\n\n' + html2php(div, response.finalUrl);
	  });
	  response.document.querySelectorAll('div.tab-section > div.section > h6').forEach(function(h6) {
		i = h6.parentNode.querySelectorAll('span > a');
		if (i.length > 0) description += '\n\n[b]' + h6.textContent.trim() + ':[/b] ' + Array.from(i)
			.map(a => `[url=https://openlibrary.org${a.pathname}]${a.textContent.trim()}[/url]`).join(', ');
	  });
	  if ((ref = response.document.querySelector('div.editionAbout h4.publisher')) != null)
		description = html2php(ref, response.finalUrl).trim() + description;
	  if ((ref = response.document.querySelector('span[itemprop="ratingValue"]')) != null)
		description += `\n\n[b]Rating:[/b] ${Math.round(parseFloat(ref.textContent) * 20)}%`;
	  description += '\n';
	  var worldCat;
	  response.document.querySelectorAll('div.section > dl.meta > dt').forEach(function(dt) {
		if (dt.nextElementSibling == null || dt.nextElementSibling.nodeName != 'DD') return;
		var desc = html2php(dt.nextElementSibling, response.finalUrl).trim();
		if (desc) description += '\n[b]' + dt.textContent.trim() + '[/b]: ' + desc;
		if ((ref = dt.nextElementSibling.querySelector('a')) != null
			&& ref.href.startsWith('https://www.worldcat.org')) worldCat = ref.href;
	  });
	  if ((ref = response.document.querySelector('meta[property="og:url"][content]')) != null)
		description += `\n\n[b]More info and reviews:[/b]\n[url]${ref.content}[/url]`;
	  writeDescription(description.collapseGaps());
	  if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null) setCover(ref.content);
	  response.document.querySelectorAll('div.section.link-box > div > span > a').forEach(function(a) {
		if (!a.pathname.startsWith('/subjects/') || a.pathname.includes(':')) return;
		tags.add(a.textContent.trim());
	  });
	  if (tags.length <= 0) response.document.querySelectorAll('div.subjects span > a').forEach(function(a) {
		if (!a.pathname.startsWith('/subjects/') || a.pathname.includes(':')) return;
		tags.add(a.textContent.trim());
	  });
	  if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
	  if (!worldCat) response.document.querySelectorAll('div.section > dl.meta > dd[itemprop="isbn"]').forEach(function(dd) {
		if (/^(?:\d{13}|\d{10})$/.test(dd.textContent.trim())) i = 'https://www.worldcat.org/isbn/' + RegExp.$1;
	  });
	  if (worldCat) findOCLC(worldCat);
	}); else if (sourceUrl.hostname.startsWith('books.google.')) {
	  params.set('hl', 'en');
	  sourceUrl.search = params;
	  return globalXHR(sourceUrl).then(function(response) {
		i = response.document.querySelectorAll('td#bookinfo > div.bookinfo_sectionwrap > div:first-of-type > a.secondary');
		if (i.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		  description = joinAuthors(i);
		  if ((i = response.document.querySelector('td#bookinfo > h1.booktitle > span.fn')) != null) {
			description += ' – ' + i.textContent.trim();
			if ((i = i.parentNode.querySelector('span.subtitle')) != null && i.textContent.trim().length > 0)
			  description += ': ' + i.textContent.trim();
		  }
		  if ((i = response.document.querySelector('td#bookinfo > div.bookinfo_sectionwrap > div:nth-of-type(2)')) != null)
			description += ' (' + extractYear(i.textContent) + ')';
		  ref.value = description;
		}
		description = (ref = response.document.querySelector('div#synopsistext')) != null ?
		  html2php(ref, response.finalUrl).trim() : '';
		if (description && !description.includes('[quote]'))
		  description = '[quote]' + description.trim() + '[/quote]';
		response.document.querySelectorAll('table#metadata_content_table > tbody > tr.metadata_row').forEach(function(tr) {
		  var key = tr.querySelector('td.metadata_label'), value = tr.querySelector('td.metadata_value');
		  if (key == null || value == null) {
			console.warn('Google Books assertion failed:', tr);
			return;
		  }
		  key = key.textContent.trim(); value = value.textContent.trim();
		  if (key.toLowerCase() == 'subjects') {
			tr.querySelectorAll('td.metadata_value span[itemprop="title"]')
			  .forEach(span => { tags.add(span.textContent.trim()) });
			return;
		  }
		  if (key.toLowerCase() == 'isbn' && (/\b(\d{13})\b/.test(value) || /\b(\d{10})\b/.test(value))) {
			let wc = 'https://www.worldcat.org/isbn/' + RegExp.$1;
			value = `[url=${wc}]${value}[/url]`;
			findOCLC(wc);
		  }
		  description += `\n[b]${key}:[/b] ${value}`;
		});
		if ((ref = response.document.querySelector('td#bookinfo > div.bookinfo_sectionwrap span.rating > span.value-title[title]')) != null)
		  description += `\n[b]Rating:[/b] ${Math.round(parseFloat(ref.title) * 20)}%`;
		if ((ref = response.document.querySelector('meta[property="og:url"][content]')) != null)
			description += `\n\n[b]More info and reviews:[/b]\n[url]${ref.content}[/url]`;
		if ((ref = response.document.querySelector('div#about_author')) != null)
			description += '\n\n[b]About the author:[/b]\n' + html2php(ref, response.finalUrl).trim();
		writeDescription(description.collapseGaps());
		if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
		  setCover(ref.content + '=s0');
		if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
	  });
	} else if (sourceUrl.hostname.endsWith('play.google.com') && sourceUrl.pathname.startsWith('/store/books/details/')) {
	  params.set('hl', 'en');
	  sourceUrl.search = params;
	  return globalXHR(sourceUrl).then(function(response) {
		var metaData;
		response.document.querySelectorAll('script[type="application/ld+json"]').forEach(function(script) {
		  if (!metaData) try {
			metaData = JSON.parse(script.text);
			if (metaData['@type'] != 'Book') metaData = undefined;
		  } catch(e) { }
		});
		if (!metaData) throw 'Invalid document format';
		if (prefs.diag_mode) console.debug('Google Play Books metadata loaded:', metaData);
		var initDataCallback;
		loadGoogleMetadata(response).forEach(function(pattern) {
		  if (initDataCallback || !Array.isArray(pattern) || pattern.length != 1 || !Array.isArray(pattern[0])
			  || pattern[0].length != 22) return;
		  initDataCallback = pattern[0];
		});
		if (!initDataCallback) throw 'Invalid document format';
		if (elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]')))
		  ref.value = `${initDataCallback[8][1][4]} – ${initDataCallback[0][0]} (${extractYear(initDataCallback[8][3][1])})`;
		if (prefs.diag_mode) console.debug('Google Play Books metadata loaded:', initDataCallback);
		description = initDataCallback[8][0][1] ?
		  html2php(domParser.parseFromString(initDataCallback[8][0][1], 'text/html').body, response.finalUrl).trim() : '';
		if (description && !description.includes('[quote]'))
		  description = '[quote]' + description.trim() + '[/quote]';
		description += '\n' + initDataCallback[2].map(function(elem) {
		  var value;
		  if (elem[0] == 'ISBN' && (/\b(\d{13})\b/.test(elem[1][0][0][1]) || /\b(\d{10})\b/.test(elem[1][0][0][1])))
			value = `[url=https://www.worldcat.org/isbn/${RegExp.$1}]${elem[1][0][0][1]}[/url]`;
		  else value = elem[1].map(el => html2php(domParser.parseFromString(el[0][1], 'text/html').body,
					response.finalUrl).trim()).join(', ');
		  if (elem[0] == 'Genres') elem[1]
			.forEach(el => { tags.add(...domParser.parseFromString(el[0][1], 'text/html').body.textContent.trim().split(/\s*\/\s*/)) });
		  return `\n[b]${elem[0]}:[/b] ${value}`;
		}).join('');
		if (metaData.aggregateRating && metaData.aggregateRating.ratingValue)
		  description += `\n[b]Rating:[/b] ${Math.round(parseFloat(metaData.aggregateRating.ratingValue) * 20)}%`;
		if (initDataCallback[8][1][0] && initDataCallback[8][1][0][1]) description += '\n\n[b]About the author:[/b]\n' +
		  html2php(domParser.parseFromString(initDataCallback[8][1][0][1], 'text/html').body, response.finalUrl).trim();
		writeDescription(description.collapseGaps());
		if (urlParser.test(initDataCallback[8][4][3][2])) setCover(initDataCallback[8][4][3][2] + '=s0');
			else if ((ref = response.document.querySelector('meta[property="og:image"][content]')) != null)
		  		setCover(ref.content + '=s0');
		if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
		if (metaData.workExample && metaData.workExample.isbn)
		  findOCLC('https://www.worldcat.org/isbn/' + metaData.workExample.isbn);
	  });
	}
	if (!weak) {
	  addMessage('domain not supported', 'critical');
	  clipBoard.value = '';
	}
	return Promise.reject('domain not supported');

	function joinAuthors(nodeList) {
	  if (typeof nodeList != 'object' && !Array.isArray(nodeList)) return null;
	  return Array.from(nodeList).map(node => node.textContent.trim()).join(' & ');
	}

	function findOCLC(url) {
	  if (!url) return false;
	  var oclc = document.querySelector('input[name="oclc"]');
	  if (!elementWritable(oclc)) return false;
	  globalXHR(url).then(function(response) {
		var ref = response.document.querySelector('tr#details-oclcno > td:last-of-type');
		if (ref != null) oclc.value = ref.textContent.trim();
	  });
	  return true;
	}
  } // fillFromText_Ebooks

  function preview(n) {
	if (!prefs.auto_preview) return;
	var btn = document.querySelector('input.button_preview_' + n + '[type="button"][value="Preview"]');
	if (btn != null) btn.click();
  }

  function writeDescription(desc) {
	if (typeof desc != 'string') return;
	if (elementWritable(ref = document.querySelector('textarea#desc')
		|| document.querySelector('textarea#description') || document.querySelector('textarea#album_desc'))) ref.value = desc;
	if ((ref = document.getElementById('body')) != null && !ref.disabled) {
	  if (ref.value.length > 0) ref.value += '\n\n';
	  ref.value += desc;
	}
  }

  function queryAjaxAPI(action, params) {
	if (!action) return Promise.reject('Action missing');
	let retryCount = 0;
	return new Promise(function(resolve, reject) {
	  params = new URLSearchParams(params || undefined);
	  params.set('action', action);
	  let url = '/ajax.php?' + params, xhr = new XMLHttpRequest;
	  queryInternal();

	  function queryInternal() {
		let now = Date.now();
		try { var apiTimeFrame = JSON.parse(window.localStorage[siteApiTimeframeStorageKey]) } catch(e) { apiTimeFrame = {} }
		if (!apiTimeFrame.timeStamp || now > apiTimeFrame.timeStamp + 10000 + gazelleApiFrameReserve) {
		  apiTimeFrame.timeStamp = now;
		  apiTimeFrame.requestCounter = 1;
		} else ++apiTimeFrame.requestCounter;
		window.localStorage[siteApiTimeframeStorageKey] = JSON.stringify(apiTimeFrame);
		if (apiTimeFrame.requestCounter <= 5) {
		  xhr.open('GET', url, true);
		  xhr.setRequestHeader('Accept', 'application/json');
		  if (isRED && prefs.redacted_api_key) xhr.setRequestHeader('Authorization', prefs.redacted_api_key);
		  xhr.responseType = 'json';
		  xhr.onload = function() {
			if (xhr.status == 404) return reject('not found');
			if (xhr.status < 200 || xhr.status >= 400) return reject(defaultErrorHandler(xhr));
			if (xhr.response.status == 'success') return resolve(xhr.response.response);
			if (xhr.response.error == 'not found') return reject(xhr.response.error);
			console.warn('queryAjaxAPI.queryInternal(...) response:', xhr, xhr.response);
			if (xhr.response.error == 'rate limit exceeded') {
			  console.warn('queryAjaxAPI.queryInternal(...) ' + xhr.response.error + ':', apiTimeFrame, now, retryCount);
			  if (retryCount++ <= 10)
				return setTimeout(queryInternal, apiTimeFrame.timeStamp + 10000 + gazelleApiFrameReserve - now);
			}
			reject('API ' + xhr.response.status + ': ' + xhr.response.error);
		  };
		  xhr.onerror = function() { reject(defaultErrorHandler(xhr)) };
		  xhr.ontimeout = function() { reject(defaultTimeoutHandler(xhr)) };
		  xhr.timeout = 10000;
		  xhr.send();
		} else {
		  let delay = apiTimeFrame.timeStamp + 10000 + gazelleApiFrameReserve - now;
		  setTimeout(queryInternal, delay);
		  if (prefs.diag_mode) console.debug('AJAX API request quota exceeded: /ajax.php?action=' +
			  action + ' (' + apiTimeFrame.requestCounter + ')');
		  let msg = 'waiting ' + Math.ceil(delay / 1000)  + 's for next AJAX timeframe';
		  if (prefs.messages_verbosity >= 1)
			addMessage(msg + '; action=' + action + ' (' + apiTimeFrame.requestCounter + ')', 'notice');
		  else addMessage(msg, 'notice');
		}
	  }
	});
  }

  function setCover(url) {
	if (!urlParser.test(url)) return Promise.reject('Image url not valid');
	let image = document.getElementById('image') || document.querySelector('input[name="image"]');
	if (!elementWritable(image)) return Promise.reject('Image input not available');
	return verifyImageUrl(url).then(function(imageUrl) {
	  image.value = imageUrl;
	  coverPreview(image, imageUrl);
	  checkImageSize(imageUrl, image).then(function(imageUrl) {
		if (!prefs.auto_rehost_cover && !isNWCD) return;
		image.disabled = true;
		return imageHosts.rehostImages([imageUrl]).then(singleImageGetter).then(function(imageUrl) {
		  if (imageUrl == null) throw 'invalid image';
		  image.value = imageUrl;
		}).catch(function(reason) {
		  image.value = imageUrl;
		  addMessage(reason + ' (not rehosted)', 'warning');
		}).then(() => { image.disabled = false });
	  });
	  return imageUrl;
	});
  }

  function elementWritable(elem) {
	return elem != null && !elem.disabled && (overwrite || elem.value == '' || !isRED && elem.value == '---');
  }

  function loadGoogleMetadata(response) {
	const initDataParser = /\b(?:AF_initDataCallback)\s*\(\s*\{\s*key:\s*'ds:(\d+)'.*data:\s*function\(\)\s*{\s*return\s*([\S\s]+)\}\s*\}\s*\);/;
	return Array.from(response.document.querySelectorAll('script[nonce]'))
	  .map(function(script) { try { return eval(initDataParser.exec(script.text)[2]) } catch(e) { return false } })
	  .filter(obj => obj && typeof obj == 'object');
  }

  function getFriendlyTime(timeStr) {
	let now = Date.now(), timeStamp = timeStr.split(/\D+/).map(a => parseInt(a)); --timeStamp[1];
	timeStamp = Date.UTC(...timeStamp);
	if (isNaN(timeStamp)) {
	  console.error('Date string could not be converted to UTC time:', timeStr);
	  return '[invalid time]';
	}
	let offset = Math.round((now - timeStamp) / 1000);
	if (offset < 60) timeStamp = offset.toString() + ' seconds ago';
	else if (offset < 60 * 60) timeStamp = Math.round(offset / 60).toString() + ' minutes ago';
	else if (offset < 12 * 60**2) timeStamp = Math.round(offset / 60**2).toString() + ' hours ago';
	else {
	  timeStamp = new Date(timeStamp);
	  timeStamp = new Date(now).getDateValue() != timeStamp.getDateValue() ?
		'on ' + timeStamp.toDateString() : 'at ' + timeStamp.toTimeString();
	}
	if (timeStamp.startsWith('1 ')) timeStamp = timeStamp.replace('s ago', ' ago');
	return timeStamp;
  }
  function getGroupRef(torrent) {
	return '<a href="/torrents.php?id=' + torrent.groupId +
	  '" target="_blank" style="' + hyperlinkStyle + '">' + torrent.groupName + '</a>';
  }
  function getTorrentRef(torrent) {
	return '<a href="/torrents.php?id=' + torrent.groupId + '&torrentid=' + torrent.id +
	  '" target="_blank" style="' + hyperlinkStyle + '">' + torrent.id + '</a>';
  }
  function getRequestRef(request) {
	return '<a href="/requests.php?action=view&id=' + request.requestId +
		'" target="_blank" style="' + hyperlinkStyle + '">' + (request.title || request.requestId) + '</a>';
  }
  function getUserRef(torrent) {
	return '<a href="/users.php?id=' + torrent.userId + '" target="_blank" style="' +
	  hyperlinkStyle + '">' + torrent.username + '</a>';
  }
  function getRequestInfo(request) {
	var totalBounty = request.totalBounty || request.bounty;
	if (!(totalBounty > 0)) {
	  console.warn('Failed to get request bounty:', request);
	  return '???';
	}
	const voteGlyph = '<img src="https://ptpimg.me/3s2w7o.png" style="height: 8px; margin-right: 3px;" />'
	if (totalBounty >= 2**30) totalBounty = (Math.round(totalBounty * 100 / 2**30) / 100).toString() + ' GiB';
		else totalBounty = Math.round(totalBounty / 2**20).toString() + ' MiB';
	return `(${voteGlyph}${request.voteCount} / ${totalBounty})`;
  }

  function lookupNonMusicRelations() {
	if (!prefs.find_relations || category == null || category.selectedIndex == 0) return;
	let title = document.getElementById('title') || document.querySelector('input[name="title"]');
	if (title == null || !title.value) return;
	const similarityThreshold = 0.70;
	const titleStrippers = [
	  [bracketStripper, ''],
	  [/[\-\−\—\–\:\|\/\<\>]+/g, ' '],
	  [/[\"]+/g, ''],
	  [/\s{2,}/g, ' '],
	];
	const altTitleStrippers = [
	  [/^(?:[^\-\−\—\–]+?)\s+[\-\−\—\–]\s+/, ''],
	  //[/^(?:[^:]+?):\s+/, ''],
	];
	function getAltSearchTerm() {
	  return title.title ? titleStrippers.reduce((r, def) => r.replace(...def), title.title)
		: altTitleStrippers.concat(titleStrippers).reduce((r, def) => r.replace(...def), title.value);
	};
	let searchTerm = titleStrippers.reduce((m, substDef) => m.replace(...substDef), title.value);
	// Find existing torrents
	function searchTorrents(searchTerm) {
	  return queryAjaxAPI('browse', {
		//groupname: title.value,
		searchstr: searchTerm,
		//order_by: 'time',
		//order_way: 'desc',
		['filter_cat[' + (category.selectedIndex + 1) + ']']: 1,
	  });
	}
	searchTorrents(searchTerm).then(function(response) {
	  function printResults(results) {
		results.forEach(function(torrent) {
		  if (reportedTorrentCollicions.has(torrent.id)) return;
		  let time = new Date(parseInt(torrent.groupTime) * 1000);
		  time = !isNaN(time) ? time.toISOString() : torrent.groupTime;
		  if (isUpload) reportedTorrentCollicions.set(torrent.id,
			addMessage(new HTML('possible dupe to torrent ' + getGroupRef(torrent) + ' ' + getFriendlyTime(time)), 'warning'));
		  else if (isRequestNew) reportedTorrentCollicions.set(torrent.id,
			addMessage(new HTML('requested release possibly already on site: ' +
				getGroupRef(torrent) + ' ' + getFriendlyTime(time)), 'notice'));
		});
	  }
	  if (response.results.length > 0) return printResults(response.results);
	  	else if (!title.title && !altTitleStrippers.reduce((r, rx) => r || rx[0].test(title.value), false)) return;
	  let altSearchTerm = getAltSearchTerm();
	  return searchTorrents(altSearchTerm).then(response => { printResults(response.results.filter(function(torrent) {
		let torrentTitle = titleStrippers.reduce((r, substDef) => r.replace(...substDef), torrent.groupName);
		let similarity = jaroWrinkerSimilarity(torrentTitle, altSearchTerm);
		if (prefs.diag_mode) console.debug(`similarity("${torrentTitle}", "${altSearchTerm}") =`, similarity);
		return similarity >= similarityThreshold;
	  })) });
	}).catch(reason => { console.error('searchTorrents:', reason) });
	// Find open requests
	function searchRequests(searchTerm) {
	  return queryAjaxAPI('requests', {
		search: searchTerm,
		showall: 'on',
		['filter_cat[' + (category.selectedIndex + 1) + ']']: 1,
	  });
	}
	searchRequests(searchTerm).then(function(response) {
	  function printResults(results) {
		results.forEach(function(request) {
		  if (reportedRequests.has(request.requestId)) return;
		  if (request.categoryId != category.selectedIndex + 1) return;
		  if (isUpload) reportedRequests.set(request.requestId, addMessage(new HTML('open request ' +
			getRequestRef(request) + ' ' + getRequestInfo(request) + ' possibly fillable by this release'), 'info'));
		  else if (isRequestNew) reportedRequests.set(request.requestId,
			addMessage(new HTML('release possibly already requested: ' + getRequestRef(request)), 'info'));
		});
	  }
	  if (response.results.length > 0) return printResults(response.results);
	  	else if (!title.title && !altTitleStrippers.reduce((r, rx) => r || rx[0].test(title.value), false)) return;
	  let altSearchTerm = getAltSearchTerm();
	  return searchRequests(altSearchTerm).then(response => { printResults(response.results.filter(function(request) {
		let requestTitle = titleStrippers.reduce((r, substDef) => r.replace(...substDef), request.title);
		let similarity = jaroWrinkerSimilarity(requestTitle, altSearchTerm);
		if (prefs.diag_mode) console.debug(`similarity("${requestTitle}", "${altSearchTerm}") =`, similarity);
		return similarity >= similarityThreshold;
	  })) });
	}).catch(reason => { console.error('searchRequests:', reason) });
// 	if (!relationsCheckTimer && prefs.relations_check_interval > 0)
// 	  relationsCheckTimer = setInterval(lookupNonMusicRelations, prefs.relations_check_interval * 1000);
  }
} // fillFromText

function addMessage(text, cls) {
  if (!cls) return null;
  switch (cls = cls.toLowerCase()) {
	case 'info': var prefix = 'Info'; break;
	case 'notice': prefix = 'Notice'; break;
	case 'warning': prefix = 'Warning'; break;
	case 'critical': prefix = 'FATAL'; break;
	default: return null;
  }
  if ((messages = document.getElementById('UA-messages')) == null) {
	let ua = document.getElementById('upload assistant');
	if (ua == null) return null;
	let tr = document.createElement('TR');
	tr.id = 'UA-messages';
	ua.firstElementChild.append(tr);
	var td = document.createElement('TD');
	td.colSpan = 2;
	td.className = 'ua-messages-bg';
	tr.append(td);
  } else {
	td = messages.firstElementChild;
	if (td == null) return null;
  }
  var div = document.createElement('DIV');
  div.classList.add('ua-messages', 'ua-' + cls);
  div[text instanceof HTML ? 'innerHTML' : 'textContent'] = prefix + ': ' + text;
  return td.appendChild(div);
}

function setHandlers() {
  document.querySelectorAll([
	'image', //'picture', 'cover', 'photo', 'avatar', 'poster', 'screenshot',
  ].map(pattern => ['id', 'name'].map(attr => 'input[type="text"][' + attr + '*="' + pattern + '"]')).join(','))
	.forEach(setInputHandlers);
  for (let textArea of document.getElementsByTagName('textarea')) {
	if (textArea.className != 'ua-input') setTextAreahandlers(textArea);
  }
  if (prefs.cleanup_descriptions) ['form.create_form', 'form.edit_form', 'form#request_form'].forEach(function(sel) {
	if ((ref = document.querySelector(sel)) != null) {
	  ref.addEventListener('submit', cleanupDescriptions);
	  if (isUpload && prefs.relations_check_interval > 0)
		ref.addEventListener('submit', () => { if (relationsCheckTimer) clearInterval(relationsCheckTimer) });
	}
  });
  if ((ref = document.getElementById('yadg_input')) != null) ref.ondrop = clear0;
  // Now rape OPS upload form, but only gently
  if (isOPS && isUpload && (ref = document.getElementById('remaster')) != null) {
	ref.checked = true;
	if (!isAddFormat && prefs.ops_always_edition) {
	  elem = ref.parentNode.parentNode;
	  elem.style.display = 'none';
	  if ((ref = document.querySelector('span#year_label_not_remaster')) != null) ref.textContent = 'Initial year:';
	  if ((ref = document.querySelector('tr#edition_year > td.label')) != null) ref.textContent = 'Edition year:';
	  if ((ref = document.querySelector('tr#edition_title > td.label')) != null) ref.textContent = 'Edition title:';
	  if ((ref = document.getElementById('label_tr')) != null) /*ref.style.display = 'none'; */ref.remove();
	  if ((ref = document.getElementById('catalogue_tr')) != null) /*ref.style.display = 'none'; */ref.remove();
	  document.querySelectorAll('table#edition_information > tbody > tr')
		.forEach(tr => { elem.parentNode.insertBefore(tr, elem) });
	} else Remaster();
  }
}

function html2php(node, docUrl) {
  docUrl = urlParser.test(docUrl) ? new URL(docUrl).origin : null;
  const realUrl = a => a.origin == document.location.origin && docUrl ? docUrl + a.pathname + a.search + a.hash : a.href;
  return parseFromNode(node);

  function parseFromNode(node, tagChain = []) {
	if (!(node instanceof Node)) return null;
	switch (node.nodeType) {
	  case Node.ELEMENT_NODE: {
		let tags = [], _tags = [], text = [];
		for (let i = 0; i < 5; ++i) text[i] = '';
		switch (node.nodeName) {
		  case 'P':
			text[0] = '\n'; text[4] = '\n';
			break;
		  case 'DIV':
			text[0] = '\n\n'; text[4] = '\n\n';
			break;
		  case 'DT':
			//text[4] = '\n';
			addTag('b'); text[3] = ':';
			break;
		  case 'DD':
			//if (isRED) addTag('pad=0|0|0|30'); else text[0] = '     ';
			text[1] = '\t'; text[4] = '\n';
			break;
		  case 'LABEL':
			addTag('b');
			text[0] = '\n\n';
			break;
		  case 'BR':
			return '\n';
		  case 'HR':
			return isRED ? '[hr]' : '\n';
		  case 'B': case 'STRONG':
			addTag('b');
			break;
		  case 'I': case 'EM': case 'DFN': case 'CITE': case 'VAR':
			addTag('i');
			break;
		  case 'U': case 'INS':
			addTag('u');
			break;
		  case 'DEL':
			addTag('s');
			break;
		  case 'CODE': case 'SAMP': case 'KBD':
			addTag('code');
			text[2] = node.textContent;
			break;
		  case 'PRE':
			addTag('pre');
			text[2] = node.textContent;
			break;
		  case 'BLOCKQUOTE': case 'QUOTE':
			addTag('quote');
			break;
		  case 'Q':
			text[1] = '"'; text[3] = '"';
			break;
		  case 'H1':
			addTag('size=5'); addTag('b');
			text[0] = '\n\n'; text[4] = '\n\n';
			break;
		  case 'H2':
			addTag('size=4'); addTag('b');
			text[0] = '\n\n'; text[4] = '\n\n';
			break;
		  case 'H3':
			addTag('size=3'); addTag('b');
			text[0] = '\n\n'; text[4] = '\n\n';
			break;
		  case 'H4': case 'H5': case 'H6':
			addTag('b');
			text[0] = '\n\n'; text[4] = '\n\n';
			break;
		  case 'SMALL':
			addTag('size=1');
			break;
		  case 'OL': case 'UL':
			_tags.push(node.nodeName.toLowerCase());
			break;
		  case 'DL':
			_tags.push(node.nodeName.toLowerCase());
			break;
		  case 'LI':
			switch (tagChain.reverse().find(tag => /^[ou]l$/.test(tag))) {
			  case 'ol': text[0] = '[#] '; text[4] = '\n'; break;
			  case 'ul': text[0] = '[*] '; text[4] = '\n'; break;
			  default: return '';
			}
			break;
		  case 'TR':
			text[4] = '\n';
			break;
		  case 'TD':
			text[1] = '\t';
			break;
		  case 'A': {
			if (/^https?:$/i.test(node.protocol)) addTag('url=' + removeRedirect(realUrl(node)));
			break;
		  }
		  case 'IMG':
			addTag('img');
			text[2] = node.dataset.src || node.src;
			break;
		  case 'DETAILS': {
			let summary = node.querySelector('summary');
			summary = summary != null ? '=' + summary.textContent.trim() : '';
			addTag('hide' + summary);
			break;
		  }
		  case 'AUDIO': case 'BASE': case 'BUTTON': case 'CANVAS': case 'COL': case 'COLGROUP': case 'DATALIST':
		  case 'DIALOG': case 'EMBED': case 'FIELDSET': case 'FORM': case 'HEAD': case 'INPUT': case 'LEGEND':
		  case 'LINK': case 'MAP': case 'META': case 'METER': case 'NOSCRIPT': case 'OBJECT': case 'OPTGROUP':
		  case 'OPTION': case 'PARAM': case 'PROGRESS': case 'SELECT': case 'SOURCE': case 'STYLE': case 'SUMMARY':
		  case 'SVG': case 'TEMPLATE': case 'TEXTAREA': case 'TITLE': case 'TRACK': case 'VIDEO':
			return '';
		}
		if (['left', 'center', 'right'].some(al => node.style.textAlign.toLowerCase() == al)) {
		  addTag('align=' + node.style.textAlign.toLowerCase());
		}
		if (node.style.fontWeight >= 700) addTag('b');
		switch (node.style.fontStyle.toLowerCase()) {
		  case 'italic': addTag('i'); break;
		}
		switch (node.style.textDecorationLine.toLowerCase()) {
		  case 'underline': addTag('u'); break;
		  case 'line-through': addTag('s'); break;
		}
		if (node.style.color) {
		  ctxt.fillStyle = elem.style.color;
		  if (ctxt.fillStyle != '#000000' && /^#(?:[a-f0-8]{2}){3,4}$/i.test(ctxt.fillStyle)) {
			addTag('color=' + ctxt.fillStyle);
		  }
		}
		if (!text[2]) node.childNodes.forEach(function(node) {
		  var childContent = parseFromNode(node, tagChain.concat(tags.concat(_tags).map(tag => tag.replace(/=.*$/, ''))));
		  text[2] += childContent;
		});
		if (node.nodeName == 'A' && text[2].trim().length <= 0) {
		  if (/^(?:https?):$/i.test(node.protocol)) {
			text[2] = removeRedirect(realUrl(node));
			tags.splice(-1, 1, 'url');
		  } else text[2] = node.href.slice(node.protocol.length);
		}
		return text[0] + (text[1] || text[2] || text[3] ? tags.map(tag => '[' + tag + ']').join('').concat(text[1],
		  text[2], text[3], tags.reverse().map(tag => '[/' + tag.replace(/=.*$/, '') + ']').join('')) : '') + text[4];

		function addTag(tag) {
		  if (tagChain.concat(tags.map(tag => tag.replace(/=.*$/, ''))).includesCaseless(tag.replace(/=.*$/, ''))) return;
		  tags.push(tag);
		}
	  }
	  case Node.TEXT_NODE:
		return node.wholeText.replace(/\s+/g, ' ');
	  case Node.DOCUMENT_NODE:
		return parseFromNode(node.body);
	}
	return '';
  }
}

function coverPreview(input, imgUrl, size) {
  if (!prefs.auto_preview_cover) return;
  if ((child = document.getElementById('cover-preview')) == null) {
	if (!(input instanceof HTMLElement) || input.parentNode.previousElementSibling == null) return;
	elem = document.createElement('div');
	elem.style = 'padding-top: 10px; float: right; width: 90%;';
	child = document.createElement('img');
	child.id = 'cover-preview';
	elem.append(child);
	var div = document.createElement('div');
	div.id = 'cover-size';
	if (isRequestNew || isRequestEdit) div.style.fontSize = '7.5pt';
	elem.append(div);
	input.parentNode.previousElementSibling.append(document.createElement('br'));
	input.parentNode.previousElementSibling.append(elem);
  }
  if ((div = div || document.getElementById('cover-size')) == null) return;
  if (urlParser.test(imgUrl)) {
	child.onload = function(evt) {
	  this.onload = null;
	  if (!this.naturalWidth || !this.naturalHeight) return; // invalid image
	  (size > 0 ? Promise.resolve(size) : getRemoteFileSize(imgUrl)).then(size => {
		let warn = prefs.image_size_warning && size > prefs.image_size_warning * 2**10;
		let html = warn ? '<strong style="color: #ff4c4c;">' + formattedSize(size) + '</strong>' : formattedSize(size);
		div.innerHTML = this.naturalWidth + '×' + this.naturalHeight + ' (' + html + ')';
		if (!warn) return;
		addMessage('high cover size (' + formattedSize(size) + ')', 'notice');
	  }, reason => { div.textContent = this.naturalWidth + '×' + this.naturalHeight });
	};
	child.onerror = function(evt) {
	  this.onerror = null;
	  div.textContent = this.src = '';
	  console.warn('Image source cannot be updated:', evt, imgUrl);
	};
	child.src = imgUrl;
  } else div.textContent = child.src = '';
}

function cleanupDescriptions(evt) {
  descriptionFields.forEach(function(ID) {
	if ((ref = evt.target.querySelector('textarea#' + ID)) == null || ref.value.length <= 0) return;
	let matches, clean = ref.value
		.replace(/[ \t]*Vinyl rip by \[color=\S+\]\[\/color\]\s*/im, '')
		.replace(/\[u\]Lineage:\[\/u\]\n\n/i, '');
	const emptyTagMatch = /\s*\[(\w+)(?:=([^\[\]]*))?\]\[\/\1\]/gm;
	while (emptyTagMatch.test(clean)) clean = clean.replace(emptyTagMatch, '');
	const foodrParser = /\s*^(\[hide=DR(\d+)\]\[pre\][\S\s]+\[\/pre\]\[\/hide\])/m;
	if ((matches = foodrParser.exec(clean)) != null) [
	  /(^| \| )DR(\d+)$/m,
	  /(^| \| )\[color=\#?\w+\]DR(\d+)\[\/color\]$/m,
	  /(^\d+(?:\.\d+)?(?:\/\d+(?:\.\d+)?)*\s*kHz)$/,
	].forEach(function(anchor, index) {
	  let anchorMatches = anchor.exec(clean.replace(foodrParser, ''));
	  if (anchorMatches == null) return;
	  clean = anchorMatches.input.slice(0, anchorMatches.index);
	  if (anchorMatches[1]) {
		clean += anchorMatches[1];
		if (!anchorMatches[1].endsWith(' | ')) clean += ' | ';
	  }
	  clean += matches[1] + anchorMatches.input.slice(anchorMatches.index + anchorMatches[0].length);
	});
	ref.value = clean.replace(/(?:[ \t\xA0]*\r?\n){3,}/g, '\n\n').replace(/[ \t\xA0]+$/gm, '').trim();
  });
  return true;
}

function reInParenthesis(expr) { return new RegExp('\\s+\\([^\\(\\)]*' + expr + '[^\\(\\)]*\\)$', 'i') }
function reInBrackets(expr) { return new RegExp('\\s+\\[[^\\[\\]]*' + expr + '[^\\[\\]]*\\]$', 'i') }

function notMonospaced(str) {
  return /[\u0080-\u009F]/.test(str)
// 	|| /[\u0000-\u001F]/.test(str) // Control character
// 	|| /[\u0020-\u007F]/.test(str) // Basic Latin
// 	|| /[\u0080-\u00FF]/.test(str) // Latin-1 Supplement
// 	|| /[\u0100-\u017F]/.test(str) // Latin Extended-A
// 	|| /[\u0180-\u024F]/.test(str) // Latin Extended-B
// 	|| /[\u0250-\u02AF]/.test(str) // IPA Extensions
	|| /[\u02B0-\u02FF]/.test(str) // Spacing Modifier Letters
	|| /[\u0300-\u036F]/.test(str) // Combining Diacritical Marks
	|| /[\u0370-\u03FF]/.test(str) // Greek and Coptic
	|| /[\u0400-\u04FF]/.test(str) // Cyrillic
	|| /[\u0500-\u052F]/.test(str) // Cyrillic Supplement
	|| /[\u0530-\u058F]/.test(str) // Armenian
	|| /[\u0590-\u05FF]/.test(str) // Hebrew
	|| /[\u0600-\u06FF]/.test(str) // Arabic
	|| /[\u0700-\u074F]/.test(str) // Syriac
	|| /[\u0750-\u077F]/.test(str) // Arabic Supplement
	|| /[\u0780-\u07BF]/.test(str) // Thaana
	|| /[\u07C0-\u07FF]/.test(str) // NKo
	|| /[\u0800-\u083F]/.test(str) // Samaritan
	|| /[\u0840-\u085F]/.test(str) // Mandaic
	|| /[\u0860-\u086F]/.test(str) // Syriac Supplement
	|| /[\u08A0-\u08FF]/.test(str) // Arabic Extended-A
	|| /[\u0900-\u097F]/.test(str) // Devanagari
	|| /[\u0980-\u09FF]/.test(str) // Bengali
	|| /[\u0A00-\u0A7F]/.test(str) // Gurmukhi
	|| /[\u0A80-\u0AFF]/.test(str) // Gujarati
	|| /[\u0B00-\u0B7F]/.test(str) // Oriya
	|| /[\u0B80-\u0BFF]/.test(str) // Tamil
	|| /[\u0C00-\u0C7F]/.test(str) // Telugu
	|| /[\u0C80-\u0CFF]/.test(str) // Kannada
	|| /[\u0D00-\u0D7F]/.test(str) // Malayalam
	|| /[\u0D80-\u0DFF]/.test(str) // Sinhala
	|| /[\u0E00-\u0E7F]/.test(str) // Thai
	|| /[\u0E80-\u0EFF]/.test(str) // Lao
	|| /[\u0F00-\u0FFF]/.test(str) // Tibetan
	|| /[\u1000-\u109F]/.test(str) // Myanmar
	|| /[\u10A0-\u10FF]/.test(str) // Georgian
	|| /[\u1100-\u11FF]/.test(str) // Hangul Jamo
	|| /[\u1200-\u137F]/.test(str) // Ethiopic
	|| /[\u1380-\u139F]/.test(str) // Ethiopic Supplement
	|| /[\u13A0-\u13FF]/.test(str) // Cherokee
	|| /[\u1400-\u167F]/.test(str) // Unified Canadian Aboriginal Syllabics
	|| /[\u1680-\u169F]/.test(str) // Ogham
	|| /[\u16A0-\u16FF]/.test(str) // Runic
	|| /[\u1700-\u171F]/.test(str) // Tagalog
	|| /[\u1720-\u173F]/.test(str) // Hanunoo
	|| /[\u1740-\u175F]/.test(str) // Buhid
	|| /[\u1760-\u177F]/.test(str) // Tagbanwa
	|| /[\u1780-\u17FF]/.test(str) // Khmer
	|| /[\u1800-\u18AF]/.test(str) // Mongolian
	|| /[\u18B0-\u18FF]/.test(str) // Unified Canadian Aboriginal Syllabics Extended
	|| /[\u1900-\u194F]/.test(str) // Limbu
	|| /[\u1950-\u197F]/.test(str) // Tai Le
	|| /[\u1980-\u19DF]/.test(str) // New Tai Lue
	|| /[\u19E0-\u19FF]/.test(str) // Khmer Symbols
	|| /[\u1A00-\u1A1F]/.test(str) // Buginese
	|| /[\u1A20-\u1AAF]/.test(str) // Tai Tham
	|| /[\u1AB0-\u1AFF]/.test(str) // Combining Diacritical Marks Extended
	|| /[\u1B00-\u1B7F]/.test(str) // Balinese
	|| /[\u1B80-\u1BBF]/.test(str) // Sundanese
	|| /[\u1BC0-\u1BFF]/.test(str) // Batak
	|| /[\u1C00-\u1C4F]/.test(str) // Lepcha
	|| /[\u1C50-\u1C7F]/.test(str) // Ol Chiki
	|| /[\u1C80-\u1C8F]/.test(str) // Cyrillic Extended C
	|| /[\u1CC0-\u1CCF]/.test(str) // Sundanese Supplement
	|| /[\u1CD0-\u1CFF]/.test(str) // Vedic Extensions
	|| /[\u1D00-\u1D7F]/.test(str) // Phonetic Extensions
	|| /[\u1D80-\u1DBF]/.test(str) // Phonetic Extensions Supplement
	|| /[\u1DC0-\u1DFF]/.test(str) // Combining Diacritical Marks Supplement
// 	|| /[\u1E00-\u1EFF]/.test(str) // Latin Extended Additional
	|| /[\u1F00-\u1FFF]/.test(str) // Greek Extended
	|| /[\u200B-\u200F\u2028\u2029\u203B\u202A-\u202E\u2060-\u206F]/.test(str) //|| /[\u2000-\u206F]/.test(str) // General Punctuation
	|| /[\u2070-\u209F]/.test(str) // Superscripts and Subscripts
// 	|| /[\u20A0-\u20CF]/.test(str) // Currency Symbols
	|| /[\u20D0-\u20FF]/.test(str) // Combining Diacritical Marks for Symbols
// 	|| /[\u2100-\u214F]/.test(str) // Letterlike Symbols
	|| /[\u2150-\u218F]/.test(str) // Number Forms
// 	|| /[\u2190-\u21FF]/.test(str) // Arrows
	|| /[\u2200-\u22FF]/.test(str) // Mathematical Operators
	|| /[\u2300-\u23FF]/.test(str) // Miscellaneous Technical
	|| /[\u2400-\u243F]/.test(str) // Control Pictures
// 	|| /[\u2440-\u245F]/.test(str) // Optical Character Recognition
	|| /[\u2460-\u24FF]/.test(str) // Enclosed Alphanumerics
	|| /[\u2500-\u257F]/.test(str) // Box Drawing
// 	|| /[\u2580-\u259F]/.test(str) // Block Elements
	|| /[\u25A0-\u25FF]/.test(str) // Geometric Shapes
	|| /[\u2600-\u26FF]/.test(str) // Miscellaneous Symbols
	|| /[\u2700-\u27BF]/.test(str) // Dingbats
	|| /[\u27C0-\u27EF]/.test(str) // Miscellaneous Mathematical Symbols-A
	|| /[\u27F0-\u27FF]/.test(str) // Supplemental Arrows-A
	|| /[\u2800-\u28FF]/.test(str) // Braille Patterns
	|| /[\u2900-\u297F]/.test(str) // Supplemental Arrows-B
// 	|| /[\u2980-\u29FF]/.test(str) // Miscellaneous Mathematical Symbols-B
// 	|| /[\u2A00-\u2AFF]/.test(str) // Supplemental Mathematical Operators
	|| /[\u2B00-\u2BFF]/.test(str) // Miscellaneous Symbols and Arrows
	|| /[\u2C00-\u2C5F]/.test(str) // Glagolitic
// 	|| /[\u2C60-\u2C7F]/.test(str) // Latin Extended-C
	|| /[\u2C80-\u2CFF]/.test(str) // Coptic
	|| /[\u2D00-\u2D2F]/.test(str) // Georgian Supplement
	|| /[\u2D30-\u2D7F]/.test(str) // Tifinagh
	|| /[\u2D80-\u2DDF]/.test(str) // Ethiopic Extended
	|| /[\u2DE0-\u2DFF]/.test(str) // Cyrillic Extended-A
	|| /[\u2E00-\u2E7F]/.test(str) // Supplemental Punctuation
	|| /[\u2E80-\u2EFF]/.test(str) // CJK Radicals Supplement
	|| /[\u2F00-\u2FDF]/.test(str) // Kangxi Radicals
	|| /[\u2FF0-\u2FFF]/.test(str) // Ideographic Description Characters
	|| /[\u3000-\u303F]/.test(str) // CJK Symbols and Punctuation
	|| /[\u3040-\u309F]/.test(str) // Hiragana
	|| /[\u30A0-\u30FF]/.test(str) // Katakana
	|| /[\u3100-\u312F]/.test(str) // Bopomofo
	|| /[\u3130-\u318F]/.test(str) // Hangul Compatibility Jamo
	|| /[\u3190-\u319F]/.test(str) // Kanbun
	|| /[\u31A0-\u31BF]/.test(str) // Bopomofo Extended
	|| /[\u31C0-\u31EF]/.test(str) // CJK Strokes
	|| /[\u31F0-\u31FF]/.test(str) // Katakana Phonetic Extensions
	|| /[\u3200-\u32FF]/.test(str) // Enclosed CJK Letters and Months
	|| /[\u3300-\u33FF]/.test(str) // CJK Compatibility
	|| /[\u3400-\u4DBF]/.test(str) // CJK Unified Ideographs Extension A
	|| /[\u4DC0-\u4DFF]/.test(str) // Yijing Hexagram Symbols
	|| /[\u4E00-\u9FFF]/.test(str) // CJK Unified Ideographs
// 	|| /[\uA000-\uA48F]/.test(str) // Yi Syllables
// 	|| /[\uA490-\uA4CF]/.test(str) // Yi Radicals
	|| /[\uA4D0-\uA4FF]/.test(str) // Lisu
	|| /[\uA500-\uA63F]/.test(str) // Vai
	|| /[\uA640-\uA69F]/.test(str) // Cyrillic Extended-B
	|| /[\uA6A0-\uA6FF]/.test(str) // Bamum
	|| /[\uA700-\uA71F]/.test(str) // Modifier Tone Letters
	|| /[\uA720-\uA7FF]/.test(str) // Latin Extended-D
	|| /[\uA800-\uA82F]/.test(str) // Syloti Nagri
	|| /[\uA830-\uA83F]/.test(str) // Common Indic Number Forms
	|| /[\uA840-\uA87F]/.test(str) // Phags-pa
	|| /[\uA880-\uA8DF]/.test(str) // Saurashtra
	|| /[\uA8E0-\uA8FF]/.test(str) // Devanagari Extended
	|| /[\uA900-\uA92F]/.test(str) // Kayah Li
	|| /[\uA930-\uA95F]/.test(str) // Rejang
	|| /[\uA960-\uA97F]/.test(str) // Hangul Jamo Extended-A
	|| /[\uA980-\uA9DF]/.test(str) // Javanese
	|| /[\uA9E0-\uA9FF]/.test(str) // Myanmar Extended-B
	|| /[\uAA00-\uAA5F]/.test(str) // Cham
	|| /[\uAA60-\uAA7F]/.test(str) // Myanmar Extended-A
	|| /[\uAA80-\uAADF]/.test(str) // Tai Viet
	|| /[\uAAE0-\uAAFF]/.test(str) // Meetei Mayek Extensions
	|| /[\uAB00-\uAB2F]/.test(str) // Ethiopic Extended-A
// 	|| /[\uAB30-\uAB6F]/.test(str) // Latin Extended-E
	|| /[\uAB70-\uABBF]/.test(str) // Cherokee Supplement
	|| /[\uABC0-\uABFF]/.test(str) // Meetei Mayek
	|| /[\uAC00-\uD7AF]/.test(str) // Hangul Syllables
	|| /[\uD7B0-\uD7FF]/.test(str) // Hangul Jamo Extended-B
	|| /[\uD800-\uDB7F]/.test(str) // High Surrogates
// 	|| /[\uDB80-\uDBFF]/.test(str) // High Private Use Surrogates
	|| /[\uDC00-\uDFFF]/.test(str) // Low Surrogates
	|| /[\uE000-\uF8FF]/.test(str) // Private Use Area
	|| /[\uF900-\uFAFF]/.test(str) // CJK Compatibility Ideographs
	|| /[\uFB00-\uFB4F]/.test(str) // Alphabetic Presentation Forms
	|| /[\uFB50-\uFDFF]/.test(str) // Arabic Presentation Forms-A
	|| /[\uFE00-\uFE0F]/.test(str) // Variation Selectors
	|| /[\uFE10-\uFE1F]/.test(str) // Vertical Forms
	|| /[\uFE20-\uFE2F]/.test(str) // Combining Half Marks
	|| /[\uFE30-\uFE4F]/.test(str) // CJK Compatibility Forms
	|| /[\uFE50-\uFE6F]/.test(str) // Small Form Variants
	|| /[\uFE70-\uFEFF]/.test(str) // Arabic Presentation Forms-B
	|| /[\uFF00-\uFFEF]/.test(str) // Halfwidth and Fullwidth Forms
	|| /[\uFFF0-\uFFFF]/.test(str) // Specials
// 	|| /[\u10000-\uFFFFF]/.test(str) // Others
}

function getSizeFromString(str, returnAs = undefined) {
  if (typeof str != 'string') return 0;
  let matches = /\b(\d+(?:\.\d+)?)\s*([KMGTPEZY]?)I?B\b/.exec(str.replace(',', '.').toUpperCase());
  if (matches == null) return 0;
  const prefixes = Array.from('KMGTPEZY');
  let size = parseFloat(matches[1]);
  let fromIndex = prefixes.indexOf(matches[2]);
  let toIndex = /^([KMGTPEZY]?)(?:i?B)?$/i.test(returnAs) ? prefixes.indexOf(RegExp.$1.toUpperCase()) : 1;
  let result = size * Math.pow(2, (fromIndex - toIndex) * 10);
  return toIndex >= 0 ? result : Math.round(result);
}

function makeTimeString(duration) {
  let t = Math.abs(Math.round(duration));
  let H = Math.floor(t / 60 ** 2);
  let M = Math.floor(t / 60 % 60);
  let S = t % 60;
  return (duration < 0 ? '-' : '') + (H > 0 ? H + ':' + M.toString().padStart(2, '0') : M.toString()) +
	':' + S.toString().padStart(2, '0');
}

function timeStringToTime(str) {
  if (!/(-\s*)?\b(\d+(?::\d{2})*(?:\.\d+)?)\b/.test(str)) return null;
  var t = 0, a = RegExp.$2.split(':');
  while (a.length > 0) t = t * 60 + parseFloat(a.shift());
  return RegExp.$1 ? -t : t;
}

function normalizeDate(str, countryCode = undefined) {
  if (typeof str != 'string') return null;
  var match;
  function formatOutput(yearIndex, montHindex, dayIndex) {
	var year = parseInt(match[yearIndex]), month = parseInt(match[montHindex]), day = parseInt(match[dayIndex]);
	if (year < 30) year += 2000; else if (year < 100) year += 1900;
	if (year < 1000 || year > 9999 || month < 1 || month > 12 || day < 0 || day > 31) return null;
  	return year.toString() + '-' + month.toString().padStart(2, '0') + '-' + day.toString().padStart(2, '0');
  }
  if ((match = /\b(\d{4})-(\d{1,2})-(\d{1,2})\b/.exec(str)) != null) return formatOutput(1, 2, 3); // US
  if ((match = /\b(\d{4})\/(\d{1,2})\/(\d{1,2})\b/.exec(str)) != null) return formatOutput(1, 2, 3);
  if ((match = /\b(\d{1,2})\/(\d{1,2})\/(\d{2})\b/.exec(str)) != null
	  && (parseInt(match[1]) > 12 || /\b(?:be|it)/.test(countryCode))) return formatOutput(3, 2, 1); // BE, IT
  if ((match = /\b(\d{1,2})\/(\d{1,2})\/(\d{2})\b/.exec(str)) != null) return formatOutput(3, 1, 2); // US
  if ((match = /\b(\d{1,2})\/(\d{1,2})\/(\d{4})\b/.exec(str)) != null) return formatOutput(3, 2, 1); // UK, IE, FR, ES
  if ((match = /\b(\d{1,2})-(\d{1,2})-((?:\d{2}|\d{4}))\b/.exec(str)) != null) return formatOutput(3, 2, 1); // NL
  if ((match = /\b(\d{1,2})\. *(\d{1,2})\. *(\d{4})\b/.exec(str)) != null) return formatOutput(3, 2, 1); // CZ, DE
  if ((match = /\b(\d{1,2})\. *(\d{1,2})\. *(\d{2})\b/.exec(str)) != null) return formatOutput(3, 2, 1); // AT, CH, DE, LU
  if ((match = /\b(\d{4})\. *(\d{1,2})\. *(\d{1,2})\b/.exec(str)) != null) return formatOutput(1, 2, 3); // JP
  return extractYear(str);
}

function extractYear(expr) {
  if (typeof expr == 'number') return Math.round(expr);
  if (typeof expr != 'string') return null;
  if (/\b(\d{4})\b/.test(expr)) return parseInt(RegExp.$1);
  var d = new Date(expr);
  return parseInt(isNaN(d) ? expr : d.getFullYear());
}

function safeText(unsafeText) {
  let div = document.createElement('div');
  div.innerText = unsafeText || '';
  return div.innerHTML;
}

function decodeHTML(html) {
  var elem = document.createElement("textarea");
  elem.innerHTML = html;
  return elem.value;
}

function convertToRoman(num) {
  var roman = {
	M: 1000,
	CM: 900,
	D: 500,
	CD: 400,
	C: 100,
	XC: 90,
	L: 50,
	XL: 40,
	X: 10,
	IX: 9,
	V: 5,
	IV: 4,
	I: 1,
  };
  var str = '';
  for (var i of Object.keys(roman)) {
	var q = Math.floor(num / roman[i]);
	num -= q * roman[i];
	str += i.repeat(q);
  }
  return str;
}

function inputDataHandler(evt, data) {
  function rehoster(imageUrl) {
	if (!prefs.auto_rehost_cover && !isNWCD) return Promise.resolve(imageUrl);
	evt.target.disabled = true;
	return imageHosts.rehostImages([imageUrl]).then(singleImageGetter).then(function(imageUrl) {
	  if (imageUrl == null) throw 'invalid image';
	  evt.target.value = imageUrl;
	}).catch(function(reason) {
	  evt.target.value = imageUrl;
	  Promise.resolve(reason).then(msg => { alert(msg + ' (not rehosted)') });
	}).then(() => { evt.target.disabled = false });
  }

  if (!data) return true;
  if (data.files.length > 0) {
	if (data.files[0].type && !data.files[0].type.startsWith('image/')) return true;
	evt.target.disabled = true;
	if (evt.target.hTimer) {
	  clearTimeout(evt.target.hTimer);
	  delete evt.target.hTimer;
	}
	evt.target.style.color = 'white';
	evt.target.style.backgroundColor = 'darkred';
	let progressBar = { };
	function progressHandler(worker, param = null) {
	  if (param && typeof param == 'object') {
		if (param.readyState > 1 || progressBar.current != undefined && worker !== progressBar.current
			|| Date.now() < progressBar.lastUpdate + 100) return;
		let pct = Math.floor(Math.min(param.done * 100 / param.total, 100));
		if (pct <= progressBar.lastPct) return;
		evt.target.value = 'Uploading... [' + (progressBar.lastPct = pct) + '%]';
		progressBar.lastUpdate = Date.now();
	  } else if (param == null) {
		progressBar = { current: worker };
		evt.target.value = 'Uploading...';
	  }
	}
	let file = data.files[0];
	checkImageSize(file, evt.target, progressHandler).catch(reason => file).then(function(result) {
	  if (urlParser.test(result)) return rehoster(result);
	  if (result instanceof File) return imageHosts.uploadImages([result], progressHandler).then(singleImageGetter).then(function(imgUrl) {
		evt.target.value = imgUrl;
		coverPreview(evt.target, imgUrl, file.size);
	  });
	  console.warn('invalid checkImageSize result:', result);
	  return Promise.reject('invalid upload result');
	}).then(function() {
	  evt.target.style.backgroundColor = '#008000';
	  evt.target.hTimer = setTimeout(function() {
		evt.target.style.backgroundColor = null;
		evt.target.style.color = null;
		delete evt.target.hTimer;
	  }, 10000);
	}, function(reason) {
	  inputClear(evt);
	  evt.target.style.backgroundColor = null;
	  evt.target.style.color = null;
	  Promise.resolve(reason).then(msg => { alert(msg) });
	}).then(() => { evt.target.disabled = false });
	return false;
  } else if (data.items.length > 0) {
	let links = data.getData('text/uri-list');
	if (links) links = links.split(/\r?\n/); else {
	  links = data.getData('text/x-moz-url');
	  if (links) links = links.split(/\r?\n/).filter((item, ndx) => ndx % 2 == 0);
	  	else if (links = data.getData('text/plain')) links = links.split(/\r?\n/);
	}
	if (Array.isArray(links) && links.length > 0) imageUrlResolver(links[0]).then(verifyImageUrl).then(function(imageUrl) {
	  evt.target.value = imageUrl;
	  coverPreview(evt.target, imageUrl);
	  checkImageSize(imageUrl, evt.target).then(rehoster);
	}).catch(function(e) {
	  console.error(e);
	  alert(e);
	});
	return false;
  }
  return true;
}

function textAreaDropHandler(evt) {
  if (!evt.dataTransfer || evt.shiftKey) return true;
  if (evt.dataTransfer.files.length > 0) {
	let images = [];
	Array.from(evt.dataTransfer.files).forEach(function(file) {
	  switch (file.type) {
		case '':
		  if (!['log'/*, 'nfo'*/].some(ext => file.name.toLowerCase().endsWith('.' + ext))) break;
		case 'text/plain':
		//case 'text/nfo': // malformed encoding
		case 'text/log':
		  evt.target.disabled = true;
		  file.getText(file.name.toLowerCase().endsWith('.nfo') ? 'ibm850' : 'utf-8').then(function(text) {
			let isDR = file.name.endsWith('foo_dr.txt') && /^(?:Official DR value):\s*(?:DR(\d+))\b/m.test(text)
				|| file.name.endsWith('_log.txt') && /^(?:Official EP\/Album DR): (\d+)\b/m.test(text);
			if (isDR) var DR = parseInt(RegExp.$1);
			let tag = isDR || file.name.toLowerCase().endsWith('.nfo') ? 'pre' : 'code';
			let php = isDR ? '[hide=DR' + RegExp.$1 + '][' + tag + ']' + text + '[/' + tag + '][/hide]'
				: '[hide=' + file.name + '][' + tag + ']' + text + '[/' + tag + '][/hide]';
			if (evt.target.value.length <= 0) evt.target.value = php; else if (evt.ctrlKey) {
			  evt.target.value = evt.target.value.slice(0, evt.rangeOffset) +
				php + evt.target.value.slice(evt.rangeOffset);
			} else if (isDR && /\[hide=DR\d*\]\[pre\]\[\/pre\]/i.test(evt.target.value)) {
			  evt.target.value = RegExp.leftContext + php.slice(0, -7) + RegExp.rightContext;
			} else if (isDR && /\[hide=DR(\d*)\]((?:\[pre\](foobar2000[\s\S]+?)^\[\/pre\]\s*)+)(?:\[pre\]\[\/pre\])?/im.test(evt.target.value)) {
			  php = '[hide=DR';
			  if (parseInt(RegExp.$1) == DR) php += RegExp.$1;
			  evt.target.value = `${RegExp.leftContext}${php}]${RegExp.$2.trim()}\n[pre]${text}[/pre]${RegExp.rightContext}`;
			} else if (!isDR && /\[hide\](?:\[code\]\[\/code\])?\[\/hide\]/i.test(evt.target.value)) {
			  evt.target.value = RegExp.leftContext + php + RegExp.rightContext;
			} else if (!isDR && /(\[hide=[^\]]+\])(?:\[code\]\[\/code\])?(\[\/hide\])/i.test(evt.target.value)) {
			  evt.target.value = `${RegExp.leftContext}${RegExp.$1}[code]${text}[/code]${RegExp.$2}${RegExp.rightContext}`;
			} else evt.target.value += '\n\n' + php;
		  }).catch(function(e) { alert(e) }).then(function() {
			if (!evt.target.style.background) evt.target.disabled = false;
		  });
		  break;
		default:
		  if (file.type && file.type.startsWith('image/')) images.push(file);
	  }
	});
	if (images.length > 0) {
	  evt.target.disabled = true;
	  if (!isNWCD) var progressBar = new ULProgressBar(evt.target, images.map(image => image.size));
	  imageHosts.uploadImages(images, ULProgressBar.prototype.update.bind(progressBar))
		.then(urlHandler.bind({ tag: 'img' }), reason => { Promise.resolve(reason).then(msg => { alert(msg) }) })
		.then(function() {
		  ULProgressBar.prototype.cleanUp.call(progressBar);
		  evt.target.disabled = false;
		});
	}
	evt.stopPropagation();
	return false;
  } else if (evt.dataTransfer.items.length > 0) {
	let content = evt.dataTransfer.getData('text/uri-list');
	if (content) content = content.split(/\r?\n/); else {
	  content = evt.dataTransfer.getData('text/x-moz-url');
	  if (content) content = content.split(/\r?\n/).filter((item, ndx) => ndx % 2 == 0);
	};
	if (Array.isArray(content) && content.length > 0) {
	  (evt.altKey ? Promise.reject('force text') : Promise.all(content.map(imageUrlResolver))).then(function(resolved) {
		var resolvedUrls = resolved.flatten();
		if (prefs.auto_rehost_cover || isNWCD) {
		  evt.target.disabled = true;
		  if (resolvedUrls.length > 1 && !isNWCD) {
			progressBar = new RHProgressBar(evt.target, resolvedUrls.length);
			progressBar.update(0, false);
		  }
		  imageHosts.rehostImages(resolvedUrls, progressBar ? (param = true) => progressBar.update(0, param) : null).catch(function(reason) {
			addMessage(`${reason} (not rehosted)`, 'warning');
			RHProgressBar.prototype.update.call(progressBar, -1, false);
			return verifyImageUrls(resolvedUrls);
		  }).then(function(results) {
			urlHandler.bind({ tag: 'img' })(results, arrayGrouping(resolved).flatten());
			RHProgressBar.prototype.cleanUp.call(progressBar);
			evt.target.disabled = false;
		  });
		} else urlHandler.bind({ tag: 'img' })(resolvedUrls. arrayGrouping(resolved).flatten());
	  }).catch(function(e) {
		let as = domParser.parseFromString(evt.dataTransfer.getData('text/html'), 'text/html').body.querySelectorAll('a');
		Promise.all(content.map(urlResolver))
		  .then(resolved => urlHandler.bind({ tag: 'url', titles: Array.from(as).map(a => a.textContent.trim()) })(resolved.flatten()));
	  });
	} else if (content = evt.dataTransfer.getData('text/html')) {
	  insert(html2php(domParser.parseFromString(content, 'text/html')).collapseGaps());
	} else if (content = evt.dataTransfer.getData('text/plain')) {
	  insert(content);
	}
	evt.stopPropagation();
	return false;
  }
  return true;

  function urlHandler(results, groups = undefined) {
	if (typeof this.tag != 'string' || this.tag.length <= 0) throw 'Invalid argument';
	const tagName = this.tag.toLowerCase(), rx = new RegExp('\\[' + tagName + '\\]\\[\\/' + tagName + '\\]', 'i');
	var phpBB = '';
	results.forEach((result, index) => {
	  if (tagName == 'img') {
		var thumb = evt.altKey && !evt.target.noPhpBB && typeof result == 'object'
			&& urlParser.test(result.original) && urlParser.test(result.thumb);
		if (typeof result == 'object' && result.original) var url = result.original;
			else if (typeof result == 'string') url = result;
				else throw 'Invalid result format';
	  } else if (result.length > 0 && urlParser.test(result)) url = result; else return;
	  if (thumb) var _phpBB = '[url=' + url + '][' + tagName + ']' + result.thumb + '[/' + tagName + '][/url]'; else {
		_phpBB = '[' + tagName;
		_phpBB += Array.isArray(this.titles) && this.titles[index] ? '=' + url + ']' + this.titles[index] : ']' + url;
		_phpBB += '[/' + tagName + ']';
	  }
	  if (rx.test(evt.target.value)) evt.target.value = RegExp.leftContext + _phpBB + RegExp.rightContext; else {
		if (index > 0) phpBB += isGroupBoundary(groups, index) ? thumb ? '\n' : '\n\n' : thumb ? ' ' : '\n';
		phpBB += evt.target.noPhpBB ? url : _phpBB;
	  }
	});
	insert(phpBB);
  }

  function insert(phpBB) {
	if (typeof phpBB != 'string' || phpBB.length <= 0) return;
	if (evt.target.value.trimRight().length <= 0) evt.target.value = phpBB; else if (evt.ctrlKey) {
	  evt.target.value = evt.target.value.slice(0, evt.rangeOffset) + phpBB + evt.target.value.slice(evt.rangeOffset);
	} else evt.target.value = evt.target.value.trimRight() + /*ndx <= 0 ? '\n\n' : */'\n\n' + phpBB;
  }
}

function textAreaPasteHandler(evt) {
  if (!evt.clipboardData) return true;
  if (evt.clipboardData.files.length > 0) {
	let images = Array.from(evt.clipboardData.files).filter(file => file.type && file.type.startsWith('image/'));
	if (images.length <= 0) return true;
	evt.target.disabled = true;
	if (!isNWCD) var progressBar = new ULProgressBar(evt.target, images.map(image => image.size));
	imageHosts.uploadImages(images, ULProgressBar.prototype.update.bind(progressBar)).then(function(results) {
	  var phpBB = '';
	  results.forEach(function(result, index) {
		var thumb = evt.altKey && !evt.target.noPhpBB && typeof result == 'object'
			&& urlParser.test(result.original) && urlParser.test(result.thumb);
		if (typeof result == 'object' && result.original) var imgUrl = result.original;
			else if (typeof result == 'string') imgUrl = result;
				else throw 'Invalid result format';
		if (index > 0) phpBB += thumb ? ' ' : '\n';
		phpBB += evt.target.noPhpBB ? phpBB += imgUrl : !thumb ? '[img]' + imgUrl+ '[/img]'
		: '[url=' + imgUrl + '][img]' + result.thumb + '[/img][/url]';
	  });
	  insert(phpBB);
	}, reason => { Promise.resolve(reason).then(msg => { alert(msg) }) }).then(function() {
	  ULProgressBar.prototype.cleanUp.call(progressBar);
	  evt.target.disabled = false;
	});
	evt.stopPropagation();
	return false;
  } else if (evt.clipboardData.items.length > 0) {
	let content = evt.clipboardData.getData('text/html');
	if (!content) return true;
	insert(html2php(domParser.parseFromString(content, 'text/html')).collapseGaps());
	return false;
  }
  return true;

  function insert(phpBB) {
	if (typeof phpBB != 'string' || phpBB.length <= 0) return;
	var selStart = evt.target.selectionStart;
	evt.target.value = evt.target.value.slice(0, selStart) + phpBB + evt.target.value.slice(evt.target.selectionEnd);
	evt.target.setSelectionRange(selStart + phpBB.length, selStart + phpBB.length);
  }
}

function arrayGrouping(arr) {
  return Array.isArray(arr) ? arr.map(function(elem) {
	if (!Array.isArray(elem)) return 1;
	return elem.every(elem => !Array.isArray(elem)) ? elem.length : arrayGrouping(elem);
  }) : null;
}
function isGroupBoundary(groups, index) {
  return index > 0 && Array.isArray(groups)
  	&& groups.some((len, ndx, arr) => index == arr.slice(0, ndx).reduce((acc, len) => acc + len, 0));
}

function uaInsert(evt) {
  if ((!evt.clipboardData || evt.clipboardData.items.length <= 0)
	 && (!evt.dataTransfer || evt.dataTransfer.items.length <= 0)) return true;
  evt.target.value = '';
  if (prefs.autfill_delay > 0) {
	if (autoFill) clearTimeout(autoFill);
	autoFill = setTimeout(fillFromText, prefs.autfill_delay);
  }
}

// Firefox accepts dropped playlist in malformed form, try to detect and correct it
function fixFirefoxDropBug(evt) {
  if (evt.target == null || evt.target.value.length <= 0) return true;
  var tl = (Math.sqrt(4 * evt.target.value.split('\n').length - 3) + 1) / 2;
  if (tl < 2 || tl != Math.floor(tl) || evt.target.value.length % tl != 0) return true;
  var l = evt.target.value.length / tl;
  var s = evt.target.value.slice(0, l);
  for (var i = 1; i < tl; ++i) if (evt.target.value.slice(i * l, (i + 1) * l) != s) return true;
  evt.target.value = s;
  return true;
}

function clear0(evt) { if (evt.target.value.length > 0) evt.target.value = '' }
function clear1(evt) { if (evt.buttons == 4) clear0(evt) }
function voidDragHandler1(evt) {
  return !evt.dataTransfer.types.includes('Files') || evt.target.nodeName == 'TEXTAREA'
	  || evt.target.nodeName == 'INPUT' && evt.target.type == 'file'
}

function removeRedirect(uri) {
  return typeof uri != 'string' ? null : [
	'www.anonymz.com/?', 'www.anonymz.com?',
	'anonymz.com/?', 'anonymz.com?',
	'anonym.to/?', 'anonym.to?',
	'dereferer.me/?',
	'reho.st/',
  ].reduce(function(acc, it) {
	if (acc.toLowerCase().startsWith('https://' + it)) return acc.slice(it.length + 8);
	if (acc.toLowerCase().startsWith('http://' + it)) return acc.slice(it.length + 7);
	return acc;
  }, uri);
}

function imageUrlResolver(url) {
  return urlResolver(url).then(url => verifyImageUrl(url).catch(function(reason) {
	const notFound = Promise.reject('No title image for this URL');
	function getFromMeta(root) {
	  var meta = root instanceof Document || root instanceof Element ? [
		'meta[property="og:image:secure_url"][content]',
		'meta[property="og:image"][content]',
		'meta[name="og:image"][content]',
		'meta[itemprop="og:image"][content]',
		'meta[itemprop="image"][content]',
	  ].reduce((elem, selector) => elem || root.querySelector(selector), null) : null;
	  return meta != null && urlParser.test(meta.content) ? meta.content : undefined;
	}

	try { url = new URL(url) } catch(e) { return Promise.reject(e) }
	if (url.hostname.endsWith('pinterest.com'))
	  return pinterestResolver(url);
	else if (url.hostname.endsWith('free-picload.com')) {
	  if (url.pathname.startsWith('/album/')) return cheveretoGalleryResolver('free-picload.com', url);
	} else if (url.hostname.endsWith('bandcamp.com')) return globalXHR(url).then(function(response) {
	  var ref = response.document.querySelector('div#tralbumArt > a.popupImage');
	  ref = ref != null ? ref.href : getFromMeta(response.document);
	  return ref ? Promise.resolve(ref.replace(/_\d+(?=\.\w+$)/, '_0')) : notFound;
	}); else if (url.hostname.endsWith('7digital.com') && url.pathname.startsWith('/artist/'))
	  return globalXHR(url).then(function(response) {
		var img = response.document.querySelector('img[itemprop="image"]');
		return img != null ? img.src : notFound;
	  });
	else if (url.hostname.endsWith('geekpic.net')) return globalXHR(url).then(function(response) {
	  var a = response.document.querySelector('div.img-upload > a.mb');
	  return a != null ? a.href : notFound;
	}); else if (url.hostname.endsWith('qq.com') && url.pathname.includes('/album/')) return globalXHR(url).then(function(response) {
	  var img = response.document.querySelector('img#albumImg');
	  return img != null ? img.src.replace(/(?:_\d+)?(\.\w+)(?:\?.*)?$/, '$1').replace(/R\d+x\d+/, '') : notFound;
	}); else switch (url.hostname) {
	  // general image hostings
	  case 'www.imgur.com': case 'imgur.com':
		if (url.pathname.startsWith('/a/')) return globalXHR(url, { responseType: 'text' }).then(function(response) {
		  if (/^\s*(?:image)\s*:\s*(\{.+\}),\s*$/m.test(response.responseText)) try {
		  	return JSON.parse(RegExp.$1).album_images.images.map(image => 'https://i.imgur.com/' + image.hash + image.ext);
		  } catch(e) { debug.warn(e) }
		  return notFound;
		});
		return globalXHR(url).then(response => response.document.querySelector('link[rel="image_src"]').href);
	  case 'pixhost.to':
		if (url.pathname.startsWith('/gallery/')) return globalXHR(url).then(response =>
			Promise.all(Array.from(response.document.querySelectorAll('div.images > a')).map(a => imageUrlResolver(a.href))));
		if (url.pathname.startsWith('/show/')) return globalXHR(url)
		  .then(response => response.document.querySelector('img#image').src);
		break;
	  case 'malzo.com':
		if (url.pathname.startsWith('/al/')) return cheveretoGalleryResolver('malzo.com', url);
		break;
	  case 'imgbb.com': case 'ibb.co':
		if (url.pathname.startsWith('/album/')) return cheveretoGalleryResolver('imgbb.com', url);
		break;
	  case 'jerking.empornium.ph':
		if (url.pathname.startsWith('/album/')) return cheveretoGalleryResolver('jerking.empornium.ph', url);
		break;
	  case 'imgbox.com':
		if (url.pathname.startsWith('/g/')) return globalXHR(url).then(response =>
			Promise.all(Array.from(response.document.querySelectorAll('div#gallery-view-content > a'))
				.map(a => imageUrlResolver('https://imgbox.com' + a.pathname))));
		break;
	  case 'postimage.org': case 'postimg.cc':
		if (!url.pathname.startsWith('/gallery/')) break;
		return PostImage.galleryResolver(url);
	  case 'www.imagevenue.com': case 'imagevenue.com':
		return globalXHR(url, { headers: { Referer: 'http://www.imagevenue.com/' } }).then(function(response) {
		  var images = Array.from(response.document.querySelectorAll('div.card img')).map(function(img) {
			return img.src.includes('://cdn-images') ? Promise.resolve(img.src) : imageUrlResolver(img.parentNode.href);
		  });
		  return images.length > 1 ? Promise.all(images) : images.length == 1 ? images[0] : notFound;
		});
	  case 'www.imageshack.us': case 'imageshack.us':
		return globalXHR(url).then(response => response.document.querySelector('a#share-dl').href);
	  case 'www.flickr.com': case 'flickr.com':
		if (!url.pathname.startsWith('/photos/')) break;
		return globalXHR(url).then(function(response) {
		  if (/\b(?:modelExport)\s*:\s*(\{.+\}),/.test(response.responseText)) try {
			var urls = JSON.parse(RegExp.$1).main['photo-models'].map(function(photoModel) {
			  var sizes = Object.keys(photoModel.sizes).sort((a, b) => photoModel.sizes[b].width * photoModel.sizes[b].height
					- photoModel.sizes[a].width * photoModel.sizes[a].height);
			  return sizes.length > 0 ? 'https:'.concat(photoModel.sizes[sizes[0]].url) : null;
			});
			if (urls.length == 1) return urls[0]; else if (urls.length > 1) return urls;
		  } catch(e) { console.warn(e) }
		  return notFound;
		});
	  case 'photos.google.com':
		return googlePhotosResolver(url);
	  case 'www.500px.com': case 'web.500px.com': case '500px.com':
		if (/^\/photo\/(\d+)\b/i.test(url.pathname))
		  return _500pxUrlHandler('photos?ids='.concat(RegExp.$1));
		else if (/\/galleries\/([\w\-]+)/i.test(url.pathname)) {
		  let galleryId = RegExp.$1;
		  return globalXHR(url, { rsponseType: 'text' }).then(function(response) {
			if (!/\b(?:App\.CuratorId)\s*=\s*"(\d+)"/.test(response.responseText)) return Promise.reject('Unexpected page structure');
			return _500pxUrlHandler('users/' + RegExp.$1 + '/galleries/' + galleryId + '/items?sort=position&sort_direction=asc&rpp=999');
		  });
		}
		break;
	  case 'www.pxhere.com': case 'pxhere.com':
		if (url.pathname.includes('/photo/')) return globalXHR(url).then(response =>
			JSON.parse(response.document.querySelector('div.hub-media-content > script[type="application/ld+json"]').text).contentUrl);
		else if (url.pathname.includes('/collection/')) return pxhereCollectionResolver(url);
		break;
	  case 'www.unsplash.com': case 'unsplash.com':
		if (url.pathname.startsWith('/photos/')) return globalXHR(url.origin + url.pathname + '/download', { method: 'HEAD' })
		  .then(response => response.finalUrl.replace(/\?.*$/, ''));
		else if (url.pathname.includes('/collections/')) return unsplashCollectionResolver(url);
		break;
	  case 'www.pexels.com': case 'pexels.com':
		if (url.pathname.startsWith('/photo/')) return globalXHR(url)
		  .then(response => response.document.querySelector('meta[property="og:image"][content]').content.replace(/\?.*$/, ''));
		else if (url.pathname.startsWith('/collections/')) return pexelsCollectionResolver(url);
		break;
	  case 'www.piwigo.org': case 'piwigo.org':
		/*if (url.pathname.includes('/picture/')) */return globalXHR(url, { responseType: 'text' }).then(function(response) {
		  if (/^(?:RVAS)\s*=\s*(\{[\S\s]+?\})$/m.test(response.responseText)) try {
			var derivatives = eval('(' + RegExp.$1 + ')').derivatives.sort((a, b) => b.w * b.h - a.w * a.h);
			return derivatives.length > 0 ? 'https://piwigo.org/demo/'.concat(derivatives[0].url) : notFound;
		  } catch(e) { console.warn(e) }
		  return Promise.reject('Unexpected page structure');
		});
		break;
	  case 'www.freeimages.com': case 'freeimages.com':
		if (url.pathname.startsWith('/photo/')) return globalXHR(url).then(function(response) {
		  var types = Array.from(response.document.querySelectorAll('ul.download-type > li > span.reso'))
		  	.sort((a, b) => eval(b.textContent.replace('x', '*')) - eval(a.textContent.replace('x', '*')));
		  return types.length > 0 ? url.origin.concat(types[0].parentNode.querySelector('a').pathname) : notFound;
		});
		break;
	  case 'redacted.ch':
		if (url.pathname != '/image.php') break;
		return globalXHR(url, { method: 'HEAD' }).then(response => response.finalUrl);
	  case 'demo.cloudimg.io':
		if (!/\b(https?:\/\/\S+)$/.test(url.pathname.concat(url.search, url.hash))) break;
		var resolved = RegExp.$1;
		if (/\b(?:https?):\/\/(?:\w+\.)*discogs\.com\//i.test(resolved)) break;
		return imageUrlResolver(resolved);
	  case 'www.pimpandhost.com': case 'pimpandhost.com':
		if (!url.pathname.startsWith('/image/')) break;
		return globalXHR(url).then(function(response) {
		  var elem = resopnse.document.querySelector('div.main-image-wrapper');
		  if (elem != null && elem.dataset.src) return 'https:'.concat(elem.dataset.src);
		  elem = resopnse.document.querySelector('div.img-wrapper > a > img');
		  return elem != null ? 'https:'.concat(elem.src) : notFound;
		});
	  case 'www.screencast.com': case 'screencast.com':
		return globalXHR(url).then(function(response) {
		  var ref = response.document.querySelectorAll('ul#containerContent > li a.media-link');
		  if (ref.length <= 0) return getFromMeta(response.document) || notFound;
		  return Promise.all(Array.from(ref).map(a => imageUrlResolver('https://www.screencast.com' + a.href)));
		});
	  case 'abload.de':
		if (!url.pathname.startsWith('/image.php')) break;
		return globalXHR(url).then(function(response) {
		  var elem = response.document.querySelector('img#image');
		  if (elem == null) return notFound;
		  var src = new URL(elem.src);
		  return imageHostHandlers.abload.origin + src.pathname + src.search;
		});
	  case 'fastpic.ru':
		if (url.pathname.startsWith('/view/'))
		  return globalXHR(url).then(response => imageUrlResolver(response.document.querySelector('a.img-a').href));
		if (url.pathname.startsWith('/fullview/')) return globalXHR(url).then(function(response) {
		  var node = response.document.getElementById('image');
		  if (node != null) return node.src;
		  return /\bvar\s+loading_img\s*=\s*'(\S+?)';/.test(response.responseText) ? RegExp.$1 : notFound;
		});
		break;
	  case 'www.radikal.ru': case 'radikal.ru': case 'a.radikal.ru':
		return globalXHR(url).then(response => response.document.querySelector('div.mainBlock img').src);
	  case 'imageban.ru': case 'ibn.im':
		return globalXHR(url).then(response => response.document.querySelector('a[download]').href);
	  case 'slow.pics':
		if (!url.pathname.startsWith('/c/')) break;
		return globalXHR(url).then(function(response) {
		  var nodes = response.document.querySelectorAll('img.card-img-top');
		  if (nodes.length > 1) return Array.from(nodes).map(img => img.src);
		  	else if (nodes.length > 0) return nodes[0].src;
		  nodes = response.document.querySelectorAll('a#comparisons + div.dropdown-menu > a.dropdown-item');
		  if (nodes.length > 0) return Promise.all(Array.from(nodes).map(a => globalXHR(url.origin + a.pathname).then(response =>
			Array.from(response.document.querySelectorAll('div#preload-images > img')).map(img => img.src))))
				.then(imgUrls => imgUrls.flatten());
		  return notFound;
		});
	  case 'www.amazon.com': case 'amazon.com':
		return globalXHR(url).then(function(response) {
		  const rx = /\._\w+?(\d+)_(?=\.)/,
				getImgOrigin = colorImage => (colorImage.hiRes || colorImage.large || colorImage.thumb).replace(rx, '');
		  let obj = /^\s*(?:var\s+obj\s*=\s*jQuery\.parseJSON)\('(\{.+\})'\);/m.exec(response.responseText);
		  if (obj != null) {
			try { obj = JSON.parse(obj[1]) } catch(e) { try { obj = eval('(' + obj[1] + ')') } catch(e) { obj = { } } }
			let variants = Object.keys(obj.colorImages);
			if (variants.length > 0) return variants.map(key => obj.colorImages[key].map(getImgOrigin));
		  }
		  let colorImages = /^\s*'colorImages':\s*(\{.+\}),?$/m.exec(response.responseText);
		  if (colorImages != null) {
			try { colorImages = JSON.parse(colorImages[1].replace(/'/g, '"')) }
				catch(e) { try { colorImages = eval('(' + colorImages[1] + ')') } catch(e) { colorImages = { } } }
			if (Array.isArray(colorImages.initial) && colorImages.initial.length > 0)
			  return colorImages.initial.map(getImgOrigin);
		  }
		  let img = response.document.querySelector('div#ppd-left img');
		  return img != null && urlParser.test(img.src) ? img.src.replace(rx, '') : notFound;
		});
	  case 'www.casimages.com': case 'casimages.com':
		if (!url.pathname.startsWith('/i/')) break;
		return globalXHR(url).then(function(response) {
		  var elem = response.document.querySelector('div.logo > a');
		  if (elem != null) return elem.href;
		  elem = response.document.querySelector('div.logo img');
		  return elem != null ? elem.src : notFound;
		});
	  // music-related
	  case 'www.musicbrainz.org': case 'musicbrainz.org':
		if (!['release', 'release-group'].some(branch => url.pathname.includes('/' + branch + '/'))) break;
		return globalXHR(url).then(function(response) {
		  var node = response.document.querySelector('p.subheader > span.small > a');
		  return (node != null ? imageUrlResolver('https://musicbrainz.org' + node.pathname) : Promise.reject('no release group')).catch(function(reason) {
			return (node = response.document.querySelector('a.artwork-image')) != null ? node.href
				: (node = response.document.querySelector('div.cover-art > img')) != null ? node.src : notFound;
		  });
		});
	  case 'music.apple.com':
		if (!itunesRlsParser.test(url)) break;
		return globalXHR(url).then(function(response) {
		  var meta = response.document.querySelector('meta[property="og:image"][content]');
		  if (meta == null || !meta.content) return notFound;
		  return verifyImageUrl(meta.content.replace(/\/\d+x\d+\w*(?=\.\w+$)/, '/100000x100000-999')).catch(reason => meta.content);
		});
	  case 'www.deezer.com': case 'deezer.com':
		return globalXHR(url).then(function(response) {
		  var meta = response.document.querySelector('meta[property="og:image"][content]');
		  if (meta == null || !meta.content) return notFound;
		  return verifyImageUrl(meta.content.replace(/\/\d+x\d+\w*(?=\.\w+$)/, '/1400x1400-000000-100-0-0'))
			.catch(reason => meta.content);
		});
	  case 'www.qobuz.com': case 'qobuz.com':
		if (!url.pathname.includes('/album/')) break;
		return globalXHR(url).then(function(response) {
		  var img = response.document.querySelector('div.album-cover > img');
		  if (img == null) return notFound;
		  return verifyImageUrl(img.src.replace(/_\d{3}(?=\.\w+$)/, '_org'))
			.catch(reason => verifyImageUrl(img.src.replace(/_\d{3}(?=\.\w+$)/, '_max'))).catch(reason => img.src);
		});
	  case 'www.discogs.com': case 'discogs.com':
		return globalXHR(url).then(function(response) {
		  const dcOrigin = 'https://www.discogs.com';
		  let master = response.document.getElementById('all-versions-link');
		  return (master != null ?
			globalXHR(dcOrigin + master.pathname).then(response => getFromMeta(response.document) || notFound)
		  		: Promise.reject('no master')).catch(reason => getFromMeta(response.document) || notFound)
		  	.then(imgUrl => /^(?:https?):\/\/img\.discogs\.com\/.+\/(\S+?\.\w+)\b/i.test(imgUrl) ?
				dcOrigin + '/image/' + RegExp.$1 : imgUrl);
		});
	  case 'www.boomkat.com': case 'boomkat.com':
		if (!url.pathname.startsWith('/products/')) break;
		return globalXHR(url).then(function(response) {
		  var img = response.document.querySelector('img[itemprop="image"]');
		  if (img == null) return notFound;
		  return verifyImageUrl(img.src.replace(/\/large\//i, '/original/')).catch(reason => img.src);
		});
	  case 'www.bleep.com': case 'bleep.com':
		if (!url.pathname.startsWith('/release/')) break;
		return globalXHR(url).then(function(response) {
		  var meta = getFromMeta(response.document);
		  return meta ? verifyImageUrl(meta.replace(/\/r\/[a-z]\//i, '/r/')).catch(reason => meta) : notFound;
		});
	  case 'www.soundcloud.com': case 'soundcloud.com':
		return globalXHR(url).then(function(response) {
		  var meta = getFromMeta(response.document);
		  return meta ? verifyImageUrl(meta.replace(/\bt\d+x\d+(?=\.\w+$)/, 'original')).catch(reason => meta) : notFound;
		});
	  case 'www.prestomusic.com': case 'prestomusic.com':
		if (!url.pathname.includes('/products/')) break;
		return globalXHR(url)
		  .then(response => verifyImageUrl(response.document.querySelector('div.c-product-block__aside > a').href.replace(/\?\d+$/)));
	  case 'www.bontonland.cz':case 'bontonland.cz':
		return globalXHR(url).then(response => response.document.querySelector('a.detailzoom').href);
	  case 'www.prostudiomasters.com': case 'prostudiomasters.com':
		if (!url.pathname.includes('/album/')) break;
		return globalXHR(url).then(function(response) {
		  var a = response.document.querySelector('img.album-art');
		  return verifyImageUrl(a.currentSrc).catch(reason => a.src);
		});
	  case 'www.e-onkyo.com': case 'e-onkyo.com':
		if (!url.pathname.includes('/album/')) break;
		return globalXHR(url).then(function(response) {
		  var meta = getFromMeta(response.document);
		  return meta ? meta.replace(/\/s\d+\//, '/s0/') : notFound;
		})
	  case 'store.acousticsounds.com':
		return globalXHR(url).then(function(response) {
		  var link = response.document.querySelector('div#detail > link[rel="image_src"]');
		  return verifyImageUrl(link.href.replace(/\/medium\//i, '/xlarge/')).catch(reason => link.href);
		});
	  case 'www.indies.eu': case 'indies.eu':
		if (!url.pathname.includes('/alba/')) break;
		return globalXHR(url).then(response => verifyImageUrl)(response.document.querySelector('div.obrazekDetail > img').src);
	  case 'www.beatport.com': case 'classic.beatport.com': case 'beatport.com':
		if (!url.pathname.includes('/release/')) break;
		return globalXHR(url).then(function(response) {
		  var elem = getFromMeta(response.document);
		  return elem || ((elem = response.document.querySelector('div.artwork')) != null ?
			'https:' + elem.dataset.modalArtwork : notFound);
		}).then(imgUrl => imgUrl.replace(/\/image_size\/\d+x\d+\//i, '/image/'));
	  case 'www.supraphonline.cz': case 'supraphonline.cz':
		if (!url.pathname.includes('/album/')) break;
		return globalXHR(url).then(response => verifyImageUrl(response.document.querySelector('meta[itemprop="image"]')
			.content.replace(/\?.*$/, '')).catch(reason => notFound));
	  case 'vgmdb.net':
		if (!url.pathname.includes('/album/')) break;
		return globalXHR(url).then(function(response) {
		  var div = response.document.querySelector('div#coverart');
		  return verifyImageUrl(/\b(?:url)\s*\(\"(.*)"\)/i.test(div.style['background-image']) && RegExp.$1).catch(reason => notFound);
		});
	  case 'www.ototoy.jp': case 'ototoy.jp':
		return globalXHR(url).then(function(response) {
		  var img = response.document.querySelector('div#tralbumArt > a.popupImage');
		  return verifyImageUrl(img.dataset.src).catch(reason => img.src);
		});
	  case 'music.yandex.ru':
		if (!url.pathname.includes('/album/')) break;
		return globalXHR(url).then(function(response) {
		  var script = response.document.querySelector('script.light-data');
		  return verifyImageUrl(JSON.parse(script.text).image).catch(reason => notFound);
		});
// 	  case 'www.mora.jp': case 'mora.jp':
// 		if (!url.pathname.includes('/package/')) break;
// 		return loadMoraMetadata(url).then(packageMeta => packageMeta.packageUrl + packageMeta.fullsizeimage);
	  case 'www.pias.com': case 'store.pias.com': case 'pias.com':
		return globalXHR(url).then(function(response) {
		  var node = getFromMeta(response.document);
		  if (node) return verifyImage(node.replace(/\/[sbl]\//i, '/')).catch(reason => node);
		  node = response.document.querySelector('img[itemprop="image"]');
		  return node != null ? verifyImage(node.src.replace(/\/[sbl]\//i, '/')).catch(reason => node.src) : notFound;
		});
	  case 'www.eclassical.com': case 'eclassical.com':
		return globalXHR(url).then(function(response) {
		  var a = response.document.querySelector('div#articleImage > a');
		  return a != null ? a.href : notFound;
		});
	  case 'www.hdtracks.com': case 'hdtracks.com':
		if (!/\/album\/(\w+)\b/.test(url)) break;
		return fetch('https://hdtracks.azurewebsites.net/api/v1/album/' + RegExp.$1).then(response => response.json())
		  .then(result => result.status.toLowerCase() == 'ok' ? result.cover : Promise.reject(result.status));
	  case 'www.muziekweb.nl': case 'muziekweb.nl':
		if (!/\/Link\/(\w+)\b/i.test(url)) break;
		return globalXHR(url).then(function(response) {
		  var meta = getFromMeta(response.document)
		  return meta ? meta.replace(/\/COVER\/\w+\b/i, '/COVER/SUPERLARGE') : notFound;
		});
	  case 'www.deejay.de': case 'deejay.de':
		return globalXHR(url).then(function(response) {
		  var elem = response.document.querySelector('div#gallery > a') || response.document.querySelector('div.cover a');
		  if (elem != null) return 'https://www.deejay.de' + elem.pathname;
		  return (elem = getFromMeta(response.document)) ? elem : notFound;
		}).then(imgUrl => verifyImageUrl(imgUrl.replace(/\/images\/\w+\//i, '/images/xxl/')).catch(() => imgUrl));
	  case 'music.163.com':
		if (!/\/(?:album)\b.*\b(?:id)=(\d+)\b/i.test(url.href)) break;
		return globalXHR('https://music.163.com/api/album/' + RegExp.$1, { responseType: 'json' })
			.then(response => response.response.album.picUrl ?
				response.response.album.picUrl.replace(/\b(?:p[123])(?=\.music\.\d+\.net\b)/i, 'p4') : notFound);
	  case 'listen.tidal.com': case 'www.tidal.com': case 'api.tidal.com': case 'tidal.com':
		if (!/\/album\/(\d+)\b/i.test(url.pathname) && !/\b(?:albumId)=(\d+)\b/i.test(url.search)) break;
		return globalXHR('https://api.tidal.com/v1/albums/' + RegExp.$1 + '?countrycode=US&token=_DSTon1kC8pABnTw', {
		  responseType: 'json',
		}).then(response => response.response.cover ?
			'https://resources.tidal.com/images/' + response.response.cover.replace(/-/g, '/') + '/1280x1280.jpg'
		: notFound);
	}
	return globalXHR(url, { headers: { 'Referer': url.origin } }).then(function(response) {
	  if (url.pathname.startsWith('/album/')
		  && response.document.querySelector('div#tabbed-content-group > div.content-listing > div.pad-content-listing') != null)
		return cheveretoGalleryResolver(url.hostname, url);
	  return getFromMeta(response.document) || notFound;
	});
  }));
}

PTPimg.prototype.setSession = function() {
  return this.apiKey ? Promise.resolve(this.apiKey) : globalXHR(this.origin).then(response => {
	var apiKey = response.document.getElementById('api_key');
	if (apiKey == null) {
	  let counter = GM_getValue('ptpimg_reminder_read', 0);
	  if (counter < 3) {
		alert(`
PTPimg API key could not be captured. Please login to ${this.origin}/ and redo the action.

If you don\'t have PTPimg account at your disposal and not using the script on OPS,
consider to set "auto_rehost_cover" config entry to false.

Local images uploading is still available to fallback image hosts (proxied on RED).
`);
		GM_setValue('ptpimg_reminder_read', ++counter);
	  }
	  return Promise.reject('API key not configured');
	} else if (!(this.apiKey = apiKey.value))
	  return Promise.reject('assertion failed: empty PTPimg API key');
	GM_setValue('ptpimg_api_key', this.apiKey);
	Promise.resolve(this.apiKey)
	  .then(apiKey => { alert(`Your PTPimg API key [ ${apiKey} ] was successfully configured`) });
	return this.apiKey;
  });
}

var imageHosts = new ImageHostManager(
  message => { addMessage(message, 'warning') },
  ['PTPimg', 'NWCD', 'ImgBB', 'PixHost', 'ImgBox', 'PostImage', 'FunkyIMG', 'Slowpoke', 'VgyMe', 'Abload'],
  isNWCD ? ['NWCD'] : isRED ? ['PTPimg']
  	: ['PTPimg', 'ImgBB', 'PixHost', 'PostImage', 'FunkyIMG', 'Abload', 'Jerking', 'PicaBox', 'Imgur']
);

function checkImageSize(image, elem, progressHandler = null) {
  if (!(prefs.image_size_reduce_threshold > 0)) return Promise.resolve(image);
  //if (imageHosts.rhHostChain.length <= 0) return Promise.reject('no hosts to upload result');
  if (!(elem instanceof HTMLElement)) elem = null;
  if (elem != null) elem.disabled = true;
  return (image instanceof File ? Promise.resolve(image.size) : getRemoteFileSize(image)).then(function(size) {
	if (size <= prefs.image_size_reduce_threshold * 2**10) return image;
	return reduceImageSize(image, GM_getValue('image_reduce_maxheight', 1500),
		GM_getValue('image_reduce_jpegquality', 90), progressHandler).then(function(output) {
	  if (elem != null) {
		elem.value = output.uri;
		if (progressHandler) coverPreview(elem, output.uri, output.size);
	  }
	  Promise.resolve(output.size).then(reducedSize => {
		addMessage('cover size reduced by ' + Math.round((size - reducedSize) * 100 / size) +
			'% (' + Math.ceil(size / 2**10) + ' → ' + Math.ceil(reducedSize / 2**10) + ' KiB)', 'info');
	  });
	  return prefs.auto_rehost_cover || isNWCD ? output.uri : (function() {
		let fallbackRehost = new Chevereto('imgcdn.dev', 'ImgCDN', ['jpeg', 'png', 'gif', 'bmp', 'webp'], 30, { sizeLimitAnonymous: 20 });
		if (!fallbackRehost.apiKey) fallbackRehost.apiKey = '5386e05a3562c7a8f984e73401540836';
		if (output.size > fallbackRehost.sizeLimit * 2**20) return Promise.reject('size limit exceeded');
		return fallbackRehost.rehost([output.uri]).then(singleImageGetter);
	  })().catch(function(reason) {
		console.warn('Reupload to ImgCDN failure:', reason);
		return imageHostHandlers['pixhost'].rehost([output.uri]).then(singleImageGetter);
	  });
	});
  }).catch(function(reason) {
	addMessage('failed to get image size, optimize the image, or upload it to fallback host: ' +
		reason + ', size reduction was not performed', 'warning');
	return image;
  }).then(function(finalResult) {
	if (elem != null) {
	  if (urlParser.test(finalResult)) {
		if (finalResult != elem.value) elem.value = finalResult;
	  } else elem.value = '';
	  elem.disabled = false;
	}
	return finalResult;
  });
}

function validateTorrentFile(torrent) {
  tfMessages.forEach(elem => { elem.remove() });
  tfMessages = [];
  let fr = new FileReader;
  fr.onload = function(evt) {
	torrent = bdecode(new Uint8Array(fr.result));
	if (!torrent || typeof torrent != 'object') {
	  console.warn('Assertion failed:', torrent);
	  return;
	}
	let rootImageCount = 0, category = document.getElementById('categories'),
		isMusicUpload = category == null || category.value === '0' || category.value == 'Music',
		rootFolderName = decodeURIComponent(escape(torrent.info.name));
	if (hyphenCoupling.test(rootFolderName)) tfMessages.push(addMessage('torrent folder hyphen coupling ("' +
		rootFolderName + '")', 'notice'));
	torrent.info.files.forEach(function(file) {
	  var fullPath = decodeURIComponent(escape(file.path.join('/')));
	  if (/\s{2,}/.test(fullPath))
		tfMessages.push(addMessage('excessive whitespace in file path: ' + filepath, 'warning'));
	  if (file.path.some(folderName => /^\s+|\s+$/.test(folderName)))
		tfMessages.push(addMessage('leading/tailing whitespace in path component: ' + filepath, 'warning'));
	  var fileName = decodeURIComponent(escape(file.path.pop())),
		  totalLen = rootFolderName.trueLength() + 1 + fullPath.trueLength();
	  if (totalLen > 180) tfMessages.push(addMessage(new HTML('file "' +
		safeText(fullPath.normalize('NFC').slice(0, Math.max(179 - rootFolderName.trueLength(), 0))) +
		safeText(fullPath.normalize('NFC').slice(Math.max(179 - rootFolderName.trueLength(), 0))).bold() +
		'" exceeding allowed length (' + totalLen + ' > 180)'), 'warning'));
	  if (file.path.length <= 0 && imageExtensions.some(ext => fileName.toLowerCase().endsWith('.' + ext))) {
		++rootImageCount;
		if (!/^(?:cover|artworks?|sleeve|artist|(?:front|back|rear)(?: cover)?)\.\w+$/i.test(fileName) && isMusicUpload)
		  tfMessages.push(addMessage('Nonstandard cover image name: ' + fileName, 'notice'));
	  }
	  if (/(?:\.(?:torrent|\!ut|\!qb|url|lnk|tmp|bak)|^Thumbs\.db)$/i.test(fileName))
		tfMessages.push(addMessage(new HTML('garbage file "' + safeText(fullPath).bold() + '"'), 'warning'));
	  if (/^(?:(?:MediaInfo)\.txt|(?:Lossless Audio Checker|results|auCDtect|audiochecker)\.log)$/i.test(fileName))
		tfMessages.push(addMessage('Auxiliary text file in torrent: ' + fullPath, 'notice'));
	  if (/^(?:thumb\.jpg)$/i.test(fileName)) tfMessages.push(addMessage('thumb.jpg in torrent', 'notice'));
	  if (/^(?:DR\d+\.txt)$/i.test(fileName))
		tfMessages.push(addMessage(`Nonstandard DR report in torrent (${$fileName})`, 'notice'));
	  if ([
		'm3u', 'm3u8', 'pls', 'fpl', 'wpl', 'asx', 'b4s', 'bpl', 'm4u', 'ram', 'plp',
		'kpl', 'plist', 'xml', 'rmp', 'xspf', 'smi', 'smil', 'wax', 'wvx', 'wmx', 'pla',
	  ].some(ext => fileName.toLowerCase().endsWith('.' + ext)))
		tfMessages.push(addMessage('Disposable playlist found: ' + fullPath, 'notice'));
	  if (hyphenCoupling.test(fullPath))
		tfMessages.push(addMessage('file path hyphen coupling ("' + fullPath + '")', 'notice'));
	});
	if (isMusicUpload) {
	  if (rootImageCount > 1) tfMessages.push(addMessage(`More images (${rootImageCount}) in root folder`, 'notice'));
	  if (rootImageCount <= 0) tfMessages.push(addMessage('No cover image in root folder', 'notice'));
	}
	ref = document.querySelector('td.ua-messages-bg');
	if (ref != null && ref.childElementCount <= 0) ref.parentNode.remove();
  };
  fr.onerror = fr.ontimeout = error => { console.error('FileReader error (' + torrent.name + ')') };
  fr.readAsArrayBuffer(torrent);

  function bdecode(str) {
	var pos = 0, infoBegin = 0, infoEnd = 0;
	return bdecodeInternal(str);

	function bdecodeInternal(str) {
	  if (pos >= str.length) return null;
	  switch (str[pos]) {
		case 100: // char code for 'd'
		  ++pos;
		  var retval = [];
		  while (str[pos] != 101) { // char code for 'e'
			var key = bdecodeInternal(str), val = bdecodeInternal(str);
			if (key === null || val === null) break;
			retval[key] = val;
		  }
		  if (infoEnd == -1) infoEnd = pos + 1;
		  retval.isDct = true;
		  ++pos;
		  return retval;
		case 105: // char code for 'i'
		  ++pos;
		  var digits = Array.prototype.indexOf.call(str, 101, pos) - pos; // 101 = char code for 'e'
		  val = '';
		  for (var i = pos; i < digits + pos; ++i) val += String.fromCharCode(str[i]);
		  val = Math.round(parseFloat(val));
		  pos += digits + 1;
		  return val;
		case 108: // char code for 'l'
		  ++pos;
		  retval = [];
		  while (str[pos] != 101) { // char code for 'e'
			let val = bdecodeInternal(str);
			if (val === null) break;
			retval.push(val);
		  }
		  ++pos;
		  return retval;
		default: {
		  digits = Array.prototype.indexOf.call(str, 58, pos) - pos; // 58 = char code for ':'
		  if (digits < 0 || digits > 20) return null;
		  let len = '';
		  for (i = pos; i < digits + pos; ++i) len += String.fromCharCode(str[i]);
		  len = parseInt(len);
		  pos += digits + 1;
		  let fstring = '';
		  for (i = pos; i < len + pos; ++i) fstring += String.fromCharCode(str[i]);
		  pos += len;
		  if (fstring == 'info') {
			infoBegin = pos;
			infoEnd = -1;
		  }
		  return fstring;
		}
	  }
	}
  }
}

function defaultErrorHandler(response) {
  console.error('HTTP error:', response);
  var e = 'HTTP error ' + response.status;
  if (response.statusText) e += ' (' + response.statusText + ')';
  if (response.error) e += ' (' + response.error + ')';
  if (prefs.messages_verbosity >= 2) addMessage(e, 'notice');
  return e;
}

function defaultTimeoutHandler(response) {
  console.error('HTTP timeout:', response);
  var e = 'HTTP timeout';
  if (prefs.messages_verbosity >= 2) addMessage(e, 'notice');
  return e;
}

function insertUAControls() {
  document.head.appendChild(document.createElement('style')).innerHTML = `
.ua-messages {
  text-indent: -2em;
  margin-left: 2em;
  font: 8pt Verdana, Tahoma, sans-serif;
}
.ua-messages-bg {
  padding: 15px;
  text-align: left;
  background-color: darkslategray;
}

.ua-critical { color: red; font-weight: bold; font-size: 10pt; }
.ua-warning { color: #ff8d00; font-weight: 500; font-size: 9pt; }
.ua-notice { color: #e3d67b; }
.ua-info { color: white; }

.ua-button { vertical-align: middle; background-color: transparent; }
input.ua-button2 {
  /*color: white;*/
  /*background-color: #725200;*/
  width: 13em;
  font: 500 x-small "Segoe UI", Calibri, sans-serif;
}
.ua-input {
  font: 600 x-small "Segoe UI", Calibri, sans-serif;
  color: slategray; background-color: antiquewhite;
  width: 620px; height: 40px;
  margin-top: 8px; margin-bottom: 8px;
}
.ua-input:focus { color: black; }

#cover-preview {
  width: 100%;
  /*box-shadow: 3px 3px 3px;*/
}
#cover-size {
  width: 100%;
  color: white; background-color: #0a4a75;
  font: 8.5pt Verdana, Tahoma, sans-serif;
  text-align: center;
  /*padding-top: 5px;*/
}

::placeholder {
  font: bold 12pt Calibri, "Segoe UI", sans-serif;
  color: #808080;
  /*text-shadow: 0px 0px 3px #b4b4b4;*/
}
`;

  if (isUpload) {
	if ((ref = document.querySelector('form#upload_table > div#dynamic_form')) == null) return;
	common1();
	common4('Autofill form (overwrite)', 'Autofill form (keep values)');
	common2();
	ref.parentNode.insertBefore(tbl, ref);
  } else if (isEdit) {
	if ((ref = document.querySelector('form.edit_form > div > div > input[type="submit"]')) == null) return;
	ref = ref.parentNode;
	ref.parentNode.insertBefore(document.createElement('br'), ref);
	common1();
	common4('Autofill (overwrite)', 'Autofill (keep values)');
	//common3('Autofill form (keep values)');
	common2();
	tbl.style.marginBottom = '10px';
	ref.parentNode.insertBefore(tbl, ref);
  } else if (isTorrentEdit) {
	if ((ref = document.querySelector('form#upload_table')) == null) return;
	common1();
	common4('Autofill (overwrite)', 'Autofill (keep values)');
	//common3('Autofill form (keep values)');
	common2();
	tbl.style.marginBottom = '10px';
	ref.append(tbl);
  } else if (isRequestNew) {
	if ((ref = document.getElementById('categories')) == null) return;
	ref = ref.parentNode.parentNode.nextElementSibling;
	ref.parentNode.insertBefore(document.createElement('br'), ref);
	common1();
	//common3('Autofill from URL');
	common4('Autofill form (overwrite)', 'Autofill form (keep values)');
	common2();
	child = document.createElement('td');
	child.colSpan = 2;
	child.append(tbl);
	elem = document.createElement('tr');
	elem.append(child);
	ref.parentNode.insertBefore(elem, ref);
  } else if (isRequestEdit) {
	if ((ref = document.querySelector('input#button[type="submit"]')) == null) return;
	ref = ref.parentNode.parentNode;
	ref.parentNode.insertBefore(document.createElement('br'), ref);
	common1();
	//common3('Autofill form (keep values)');
	common4('Autofill (overwrite)', 'Autofill (keep values)');
	common2();
	tbl.style.marginBottom = '10px';
	elem = document.createElement('tr');
	child = document.createElement('td');
	child.colSpan = 2;
	child.append(tbl);
	elem.append(child);
	ref.parentNode.insertBefore(elem, ref);
  }

  if ((ref = document.getElementById('categories')) != null) {
	ref.addEventListener('change', function(e) {
	  elem = document.getElementById('upload assistant');
	  if (elem != null) elem.style.visibility = this.value < 4
	  || ['Music', 'Applications', 'E-Books', 'Audiobooks'].includes(this.value) ? 'visible' : 'collapse';
	  setTimeout(setHandlers, 2000);
	});
  }

  function common1() {
	tbl = document.createElement('tr');
	tbl.style.backgroundColor = 'darkgoldenrod';
	tbl.style.verticalAlign = 'middle';
	elem = document.createElement('td');
	elem.style.textAlign = 'center';
	child = document.createElement('textarea');
	child.id = 'UA-data';
	child.name = 'UA-data';
	child.className = 'ua-input';
	child.spellcheck = false;
	child.placeholder = 'Paste/drop album from foobar2000 or URL to release page here';
	child.onpaste = uaInsert;
	if (!isNWCD) {
	  child.ondrop = uaInsert;
	  child.ondragover = clear0;
	  if (isFirefox) child.oninput = fixFirefoxDropBug;
	} else child.ondrop = child.ondragstart = child.ondragover = function(evt) {
	  evt.preventDefault();
	  evt.stopPropagation();
	  return false;
	};
	var desc = document.getElementById('body');
	if (desc != null && urlParser.test(desc.value)) {
	  child.value = RegExp.$1;
	  desc.value = '';
	  if (prefs.autfill_delay > 0) autoFill = setTimeout(fillFromText, prefs.autfill_delay);
	}
	elem.append(child);
	tbl.append(elem);
	elem = document.createElement('td');
	elem.style.textAlign = 'center';
  }

  function common2() {
	tbl.append(elem);
	var tb = document.createElement('tbody');
	tb.append(tbl);
	tbl = document.createElement('table');
	tbl.id = 'upload assistant';
	tbl.append(tb);
  }

  function common3(caption) {
	child = document.createElement('input');
	child.id = 'append-from-text';
	child.value = caption;
	child.type = 'button';
	child.className = 'ua-button2';
	child.style.height = '52px';
	child.onclick = fillFromText;
	elem.append(child);
  }
  function common4(caption1, caption2) {
	var x = [];
	x.push(document.createElement('tr'));
	x[0].classList.add('ua-button');
	child = document.createElement('input');
	child.id = 'fill-from-text';
	child.value = caption1;
	child.type = 'button';
	child.className = 'ua-button2';
	child.onclick = fillFromText;
	x[0].append(child);
	elem.append(x[0]);
	x.push(document.createElement('tr'));
	x[1].classList.add('ua-button');
	child = document.createElement('input');
	child.id = 'fill-from-text-weak';
	child.value = caption2;
	child.type = 'button';
	child.className = 'ua-button2';
	child.onclick = fillFromText;
	x[1].append(child);
	elem.append(x[1]);
  }
}