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[RED/NWCD] Upload Assistant

Accurate filling of new upload/request and group/request edit forms based on foobar2000's playlist selection (via pasted output of copy command), release integrity check, two tracklist layouts, colours customization, featured artists extraction, classical works formatting, coverart fetching from store, checking for previous upload and more. As alternative to pasted playlist, e.g. for requests creation, valid URL to product page on supported web can be used -- see below.

Pada tanggal 19 Januari 2020. Lihat %(latest_version_link).

// ==UserScript==
// @name         [RED/NWCD] Upload Assistant
// @namespace    https://greasyfork.org/users/321857-anakunda
// @version      1.203
// @description  Accurate filling of new upload/request and group/request edit forms based on foobar2000's playlist selection (via pasted output of copy command), release integrity check, two tracklist layouts, colours customization, featured artists extraction, classical works formatting, coverart fetching from store, checking for previous upload and more. As alternative to pasted playlist, e.g. for requests creation, valid URL to product page on supported web can be used -- see below.
// @author       Anakunda
// @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_log
// //@require      https://connect.soundcloud.com/sdk/sdk-3.3.2.js
// @require      https://greasyfork.org/scripts/393837-qobuzlib/code/QobuzLib.js
// @require      https://greasyfork.org/scripts/394414-ua-resource/code/UA-resource.js
// ==/UserScript==

// Additional setup: to work, set the pattern below as built-in foobar2000 copy command or custom Text Tools plugin quick copy command
//   [$fix_eol(%album artist%,)]$char(30)[$fix_eol(%album%,)]$char(30)[$if3(%date%,%ORIGINAL RELEASE DATE%,%year%)]$char(30)[$if3(%releasedate%,%retail date%,%date%,%year%)]$char(30)[$fix_eol($if3(%label%,%publisher%,%COPYRIGHT%),)]$char(30)[$fix_eol($if3(%catalog%,%CATALOGNUMBER%,%CATALOG NUMBER%,%labelno%,%catalog #%,%SKU%),)]$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)[$if3(%media%,%format%,%source%,%MEDIATYPE%,%SOURCEMEDIA%,%discogs_format%)]$char(30)[$fix_eol(%genre%,)[|$fix_eol(%style%,)]]$char(30)[$num(%discnumber%,0)]$char(30)[$num($if2(%totaldiscs%,%disctotal%),0)]$char(30)[$fix_eol(%discsubtitle%,)]$char(30)[%track number%]$char(30)[$num($if2(%totaltracks%,%TRACKTOTAL%),0)]$char(30)[$fix_eol(%title%,)]$char(30)[$fix_eol(%track artist%,)]$char(30)[$if($strcmp($fix_eol(%performer%,),$fix_eol(%artist%,)),,$fix_eol(%performer%,))]$char(30)[$fix_eol($if3(%composer%,%writer%,%SONGWRITER%,%author%,%LYRICIST%),)]$char(30)[$fix_eol(%conductor%,)]$char(30)[$fix_eol(%remixer%,)]$char(30)[$fix_eol($if2(%compiler%,%mixer%),)]$char(30)[$fix_eol($if2(%producer%,%producedby%),)]$char(30)%length_seconds_fp%$char(30)%length_samples%$char(30)[%filesize%]$char(30)[%replaygain_album_gain%]$char(30)[%album dynamic range%]$char(30)[%__tool%][ | %ENCODER%][ | %ENCODER_OPTIONS%]$char(30)[$fix_eol($if2(%url%,%www%),)]$char(30)$directory_path(%path%)$char(30)[$replace($replace($if2(%comment%,%description%),$char(13),$char(29)),$char(10),$char(28))]$char(30)$trim([RELEASETYPE=$replace($if2(%RELEASETYPE%,%RELEASE TYPE%), ,_) ][COMPILATION=$trim(%compilation%) ][DISCID=$trim(%DISCID%) ][ISRC=$trim(%ISRC%) ][EXPLICIT=$trim(%EXPLICIT%) ][ORIGINALFORMAT=$trim($replace(%ORIGINALFORMAT%, ,_)) ][ASIN=$trim(%ASIN%) ][DISCOGS_ID=$trim(%discogs_release_id%) ][SOURCEID=$trim($replace(%SOURCEID%, ,_)) ][BPM=$trim(%BPM%) ][BARCODE=$trim($replace($if3(%barcode%,%UPC%,%EAN%,%MCN%), ,)) ])
//
// List of supported domains for online capturing of release details:
//
// 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
// - 7digital.com
// - e-onkyo.com
// - acousticsounds.com
// - indies.eu
// - beatport.com
// - traxsource.com
//
// Ebooks releases:
// - martinus.cz, martinus.sk
// - goodreads.com
// - databazeknih.cz
//
// Application releases:
// - sanet.st

'use strict';

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

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

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

const isUpload = testPath('upload');
const isEdit = testPath('torrents', 'action=editgroup&');
const isRequestNew = testPath('requests', 'action=new');
const isRequestEdit = testPath('requests', 'action=edit&');

const urlParser = /^\s*(https?:\/\/\S+)\s*$/i;
const imghostOrigin = 'https://ptpimg.me';
const descriptionFields = ['album_desc', 'body', 'description', 'release_desc', 'release_lineage'];
//const promiseAll = Promise.allSettled || Promise.all;

var prefs = {
  set: function(prop, def) { this[prop] = GM_getValue(prop, def) },
  save: function() {
	for (var iter in this) {
	  if (typeof this[iter] != 'function' && this[iter] != undefined) GM_setValue(iter, this[iter]);
	}
  },
};
prefs.set('autfill_delay', 1000); // delay in ms to autofill form after pasting text into box, 0 to disable
prefs.set('clean_on_apply', 0); // clean the input box on successfull fill
prefs.set('cleanup_descriptions', 1); // pre-submit cleanup to all description fields (remove empty placeholders, redundant info and garbage like empty tag pairs etc.)
prefs.set('keep_meaningles_composers', 0); // keep composers from file tags also for non-composer emphasing genres
prefs.set('single_threshold', 10 * 60); // For autodetection of release type: max length of single in s
prefs.set('EP_threshold', 30 * 60); // For autodetection of release type: max time of EP in s
prefs.set('auto_rehost_cover', 1); // PTPIMG / using 3rd party script
prefs.set('auto_preview_cover', 1);
prefs.set('huge_image_warning', 8); // threshold in MB for making bandwith stressing cover size warning // 0 to disable
prefs.set('cover_lookup_provider', 'itunes'); // itunes | deezer | qobuz | musicbrainz | lastfm | empty for no lookup
prefs.set('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
prefs.set('check_integrity_online', 1); // If provided URL tag, compare local release with release online and lookup for discrepancies
prefs.set('estimate_decade_tag', 1); // deduce decade tag (1980s, etc.) from album year for regular albums
prefs.set('dragdrop_patch_to_ptpimgit', 1);
prefs.set('sacd_decoder', 'foobar2000\'s SACD decoder (DSD2PCM direct / 64fp / 30kHz lowpass)');
prefs.set('ptpimg_api_key', '');
prefs.set('spotify_clientid', '6d358a207c634b1ebac640149a6090da');
prefs.set('spotify_clientsecret', '');
prefs.set('discogs_key', ''); // Applicxation/Consumer Key
prefs.set('discogs_secret', ''); // Application/Consumer Secret
prefs.set('discogs_token', 'CISOUfiQctZCkUedWJzPhzTXxRYihifZgflZAfEm');
prefs.set('soundcloud_clientid', '');
prefs.set('catbox_userhash', '');
prefs.set('lastfm_api_key', 'b9f26370d7266fbb3151b2ad4f7a74c9');
prefs.set('upcoming_tags', '4c59880a4ec241ed9c89a24e66468c64'); // add this tag(s) to upcoming releases (requests); empty to disable
prefs.set('remap_texttools_newlines', 0); // convert underscores to linebreaks (ambiguous)
// request specific
prefs.set('request_default_bounty', 0); // set this bounty in MB after successfull fill of request form / 0 for disable
prefs.set('always_request_perfect_flac', 0);
prefs.set('include_tracklist_in_request', 0); // 0: include one line summary only; 1: include full tracklisting
// tracklist specific
prefs.set('tracklist_style', 1); // 1: classical, 2: propertional font right-justified
prefs.set('sort_tracklist', 1);
prefs.set('max_tracklist_width', 80); // right margin of the right aligned tracklist. should not exceed the group description width on any device
prefs.set('tracklist_size', 2); // PHPBB fonst size
prefs.set('title_separator', '. '); // divisor of track# and title
prefs.set('pad_leader', ' ');
prefs.set('bpm_summary', 1);
prefs.set('tracklist_head_color', '#62a6ad'); // #4682B4 / #a7bdd0
// classical tracklist only components colouring
prefs.set('tracklist_disctitle_color', '#2bb7b7'); // #bb831c
prefs.set('tracklist_work_color', '#98984d'); // #b16890
prefs.set('tracklist_tracknumber_color', '#8899AA');
prefs.set('tracklist_composer_color', '#8ca014');
prefs.set('tracklist_artist_color', '#bd8218');
prefs.set('tracklist_duration_color', '#33a6cc'); // #2196f3

document.head.appendChild(document.createElement('style')).innerHTML = `
.ua-messages {
  text-indent: -2em;
  margin-left: 2em;
  font: 11px "Segoe UI", sans-serif;
}
.ua-messages-bg { padding: 15px; text-align: left; background-color: darkslategray; }

.ua-critical { color: red; font-weight: bold; font-size: 14px; }
.ua-warning { color: #ff8d00; font-weight: 500; font-size: 12px; }
.ua-notice { color: #e3d67b; }
.ua-info { color: white; }

.ua-button { vertical-align: middle; background-color: transparent; }
.ua-button2 { /*color: beige; */width: 13em; font: 300 x-small "Segoe UI", sans-serif; }
.ua-input {
  font: 600 x-small "Segoe UI", sans-serif;
  background-color: antiquewhite;
  width: 620px; height: 40px;
  margin-top: 8px; margin-bottom: 8px;
}

#cover-preview {
  width: 100%;
  /*box-shadow: 3px 3px 3px;*/
}
#cover-size {
  width: 100%;
  color: white; background-color: #0a4a75;
  font: 12px "Segoe UI", sans-serif;
  text-align: center;
  /*padding-top: 5px;*/
}
`;

var ref, tbl, elem, child, rehostItBtn;
var spotifyCredentials = {}, discogsCredentials = {}, siteArtistsCache = {}, notSiteArtistsCache = [];
var messages = null, autofill = false, dom, domParser = new DOMParser();
const ctxt = document.createElement('canvas').getContext('2d');

if (isUpload) {
  ref = document.querySelector('form#upload_table > div#dynamic_form');
  if (ref == null) return;
  common1();
  let x = [];
  x.push(document.createElement('tr'));
  x[0].classList.add('ua-button');
  child = document.createElement('input');
  child.id = 'fill-from-text';
  child.value = 'Fill from text (overwrite)';
  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 = 'Fill from text (keep values)';
  child.type = 'button';
  child.className = 'ua-button2';
  child.onclick = fillFromText;
  x[1].append(child);
  elem.append(x[1]);
  common2();
  ref.parentNode.insertBefore(tbl, ref);
} else if (isEdit) {
  ref = document.querySelector('form.edit_form > div > div > input[type="submit"]');
  if (ref == null) return;
  ref = ref.parentNode;
  ref.parentNode.insertBefore(document.createElement('br'), ref);
  common1();
  child = document.createElement('input');
  child.id = 'append-from-text';
  child.value = 'Fill from text (append)';
  child.type = 'button';
  child.className = 'ua-button2';
  child.style.height = '52px';
  child.onclick = fillFromText;
  elem.append(child);
  common2();
  tbl.style.marginBottom = '10px';
  ref.parentNode.insertBefore(tbl, ref);
} else if (isRequestNew) {
  ref = document.getElementById('categories');
  if (ref == null) return;
  ref = ref.parentNode.parentNode.nextElementSibling;
  ref.parentNode.insertBefore(document.createElement('br'), ref);
  common1();
  child = document.createElement('input');
  child.id = 'fill-from-text-weak';
  child.value = 'Fill from URL';
  child.type = 'button';
  child.className = 'ua-button2';
  child.style.height = '52px';
  child.onclick = fillFromText;
  elem.append(child);
  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) {
  ref = document.querySelector('input#button[type="submit"]');
  if (ref == null) return;
  ref = ref.parentNode.parentNode;
  ref.parentNode.insertBefore(document.createElement('br'), ref);
  common1();
  child = document.createElement('input');
  child.id = 'append-from-text';
  child.value = 'Fill from text (append)';
  child.type = 'button';
  child.className = 'ua-button2';
  child.style.height = '52px';
  child.onclick = fillFromText;
  elem.append(child);
  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);
}

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.onpaste = uaInsert;
  if (!isNWCD) child.ondrop = uaInsert; else child.ondrop = child.ondragstart = child.ondragover = function(evt) {
	evt.preventDefault();
	evt.stopPropagation();
	return false;
  };
  if (isFirefox) child.oninput = fixFirefoxDropBug;
  var desc = document.getElementById('body');
  if (desc != null && urlParser.test(desc.value)) {
	child.value = RegExp.$1;
	desc.value = '';
	if (prefs.autfill_delay > 0) {
	  autofill = true;
	  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);
}

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);
  });
}
setHandlers();

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

Array.prototype.includesCaseless = function(str) {
  return typeof str == 'string' && this.find(it => typeof it == 'string' && it.toLowerCase() == str.toLowerCase()) != undefined;
};
Array.prototype.pushUnique = function(...items) {
  items.forEach(it => { if (!this.includes(it)) this.push(it) });
  return this.length;
};
Array.prototype.pushUniqueCaseless = function(...items) {
  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.homogeneous = function() {
  return this.every(elem => elem === this[0]);
}

String.prototype.toASCII = function() {
  return this.normalize("NFKD").replace(/[\x00-\x1F\u0080-\uFFFF]/g, '');
};
String.prototype.trueLength = function() {
  return this.normalize('NFKD').replace(/[\u0300-\u036f]/g, '').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]*\r?\n){3,}/g, '\n\n').replace(/\[(\w+)\]\[\/\1\]/ig,'').trim();
};
Date.prototype.getDateValue = function() {
  return Math.floor((this.getTime() / 1000 / 60 - this.getTimezoneOffset()) / 60 / 24);
};
File.prototype.getText = function(encoding) {
  return new Promise(function(resolve, reject) {
	var reader = new FileReader();
	reader.onload = function() { resolve(reader.result) };
	reader.onerror = reader.onabort = reader.ontimeout = error => { reject('FileReader error (' + this.name + ')') };
	reader.readAsText(this, encoding);
  }.bind(this));
};
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/,
];

class TagManager extends Array {
  constructor(...tags) {
	super();
	this.presubstitutions = [
	  [/\b(?:Singer\/Songwriter)\b/i, 'singer.songwriter'],
	  [/\b(?:Pop\/Rock)\b/i, 'pop.rock'],
	  [/\b(?:Folk\/Rock)\b/i, 'folk.rock'],
	];
	this.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'],
	  ['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
	  ['Unknown'],
	  ['Other'],
	  ['New'],
	  ['Ostatni'],
	  ['Knihy'],
	  ['Audioknihy'],
	  ['dsbm'],
	  [/^(?:Audio\s*kniha|Audio\s*Book)$/i],
	].concat(excludedCountries.map(it => [it]));
	this.splits = [
	  ['Alternative', 'Indie'],
	  ['Rock', 'Pop'],
	  ['Soul', 'Funk'],
	  ['Ska', 'Rocksteady'],
	  ['Jazz Fusion', 'Jazz Rock'],
	  ['Rock', 'Pop'],
	  ['Jazz', 'Funk'],
	];
	this.additions = [
	  [/^(?:(?:(?:Be|Post|Neo)[\s\-\−\—\–]*)?Bop|Modal|Fusion|Free[\s\-\−\—\–]+Improvisation|Modern\s+Creative|Jazz[\s\-\−\—\–]+Fusion|Big[\s\-\−\—\–]*Band)$/i, 'jazz'],
	  [/^(?:(?:Free|Cool|Avant[\s\-\−\—\–]*Garde|Contemporary|Vocal|Instrumental|Crossover|Modal|Mainstream|Modern|Soul|Smooth|Piano|Latin|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'],
	];
	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 == it[0]) tag = it[1] });
	  this.presubstitutions.forEach(k => { if (k[0].test(tag)) tag = tag.replace(k[0], k[1]) });
	  tag.split(/\s*[\,\/\;\>\|]+\s*/).forEach(function(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 this.substitutions) {
		  if (test(k[0])) {
			if (k.length >= 1) added += this.add(...k.slice(1));
				else addMessage('Warning: invalid tag \'' + tag + '\' found', 'ua-warning');
			return;
		  }
		}
		for (k of this.additions) {
		  if (test(k[0])) added += this.add(...k.slice(1));
		}
		for (k of this.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;
		}
	  }.bind(this));
	}
	return added;
  }
  toString() { return Array.from(this).sort().join(', ') }
};

return;

function fillFromText(e) {
  if (e == undefined && !autofill) return;
  autofill = false;
  var overwrite = this.id == 'fill-from-text';
  var clipBoard = document.getElementById('UA-data');
  if (clipBoard == null) return false;
  const VA = 'Various Artists';
  messages = document.getElementById('UA-messages');
  //let promise = clientInformation.clipboard.readText().then(text => clipBoard = text);
  //if (typeof clipBoard != 'string') return false;
  var i, matches, url, category = document.getElementById('categories'), xhr = new XMLHttpRequest();
  if (category == null && document.getElementById('releasetype') != null
	  || category != null && (category.value == 0 || category.value == 'Music')) return fillFromText_Music();
  if (category != null && (category.value == 1 || category.value == 'Applications')) return fillFromText_Apps();
  if (category != null && (category.value == 2 || category.value == 3
	|| category.value == 'E-Books' || category.value == 'Audiobooks')) return fillFromText_Ebooks();
  return category == null ? fillFromText_Apps(true) || fillFromText_Ebooks() : false;

  function fillFromText_Music() {
	if (messages != null) messages.parentNode.removeChild(messages);
	const divs = ['—', '⸺', '⸻'];
	const vaParser = /^(?:Various(?:\s+Artists)?|VA|\<various\s+artists\>|Různí(?:\s+interpreti)?)$/i;
	const multiArtistParsers = [
	  /(?:\s+[\/\|\×]|\s*(?:;|,(?!\s*(?:[JjSs]r)\b)(?:\s*[Aa]nd\s+)?))\s+/,
	];
	const pseudoArtistParsers = [
	  /^(?:#?N\/?A|[JS]r\.?)$/i,
	  /^(?:traditional|lidová)$/i,
	  /\b(?:traditional|lidová)$/,
	  /^(?:tradiční|lidová)\s+/,
	  /^(?:[Aa]nonym)/,
	  /^(?:[Ll]iturgical\b|[Ll]iturgick[áý])/,
	  /^(?:auditorium|[Oo]becenstvo|[Pp]ublikum)$/,
	  /^(?:Various\s+Composers)$/i,
	];
	var onlineSource = urlParser.test(clipBoard.value) && RegExp.$1, isVA;
	(onlineSource ? fetchOnline_Music(onlineSource) :
	  Promise.resolve(clipBoard.value.split(/(?:\r?\n)+/).filter(line => line.trim().length > 0).map(function(line) {
		var metaData = line.split('\x1E'), track = {
		  artist: metaData.shift().trim() || undefined,
		  album: metaData.shift().trim() || undefined,
		  album_year: safeParseYear(metaData.shift().trim()),
		  release_date: metaData.shift().trim() || undefined,
		  label: metaData.shift().trim() || undefined,
		  catalog: metaData.shift().trim() || undefined,
		  country: metaData.shift().trim() || undefined,
		  encoding: metaData.shift().trim() || undefined,
		  codec: metaData.shift().trim() || undefined,
		  codec_profile: metaData.shift().trim() || undefined,
		  bitrate: safeParseInt(metaData.shift()),
		  bd: safeParseInt(metaData.shift()),
		  sr: safeParseInt(metaData.shift()),
		  channels: safeParseInt(metaData.shift()),
		  media: metaData.shift().trim() || undefined,
		  genre: metaData.shift().trim() || undefined,
		  discnumber: metaData.shift().trim() || undefined,
		  totaldiscs: safeParseInt(metaData.shift()),
		  discsubtitle: metaData.shift().trim() || undefined,
		  tracknumber: metaData.shift().trim() || undefined,
		  totaltracks: safeParseInt(metaData.shift()),
		  title: metaData.shift().trim() || undefined,
		  track_artist: metaData.shift().trim() || undefined,
		  performer: metaData.shift().trim() || undefined,
		  composer: metaData.shift().trim() || undefined,
		  conductor: metaData.shift().trim() || undefined,
		  remixer: metaData.shift().trim() || undefined,
		  compiler: metaData.shift().trim() || undefined,
		  producer: metaData.shift().trim() || undefined,
		  duration: safeParseFloat(metaData.shift()),
		  samples: safeParseInt(metaData.shift()),
		  filesize: safeParseInt(metaData.shift()),
		  rg: metaData.shift().trim() || undefined,
		  dr: metaData.shift().trim() || undefined,
		  vendor: metaData.shift().trim() || undefined,
		  url: metaData.shift().trim() || undefined,
		  dirpath: metaData.shift() || undefined,
		  description: metaData.shift().trim() || undefined,
		  identifiers: {},
		};
		metaData.shift().trim().split(/\s+/).forEach(function(it) {
		  if (/([\w\-]+)[=:](.*)/.test(it)) track.identifiers[RegExp.$1.toUpperCase()] = RegExp.$2.replace(/\x1B/g, ' ');
		});
		return track;

		function safeParseInt(x) { return typeof x != 'string' ? null : x.length <= 0 ? undefined : parseInt(x) }
		function safeParseFloat(x) { return typeof x != 'string' ? null : x.length <= 0 ? undefined : parseFloat(x) }
		function safeParseYear(x) { return typeof x != 'string' ? null : x.length <= 0 ? undefined : extractYear(x) || NaN }
	  }))
	).then(parseTracks).catch(e => { if (e) addMessage(e, 'ua-critical') });
	return;

	function parseTracks(tracks) {
	  if (tracks.length <= 0) {
		clipBoard.value = '';
		throw new HTML('FATAL: no tracks found');
	  }
	  var albumBitrate = 0, totalTime = 0, albumSize = 0, media, release = { totaldiscs: 1, srs: [] };
	  tracks.forEach(function(track) {
		if (!track.artist) {
		  clipBoard.value = '';
		  throw new HTML('FATAL: main artist must be defined in every track' + ruleLink('2.3.16.4'));
		}
		if (!track.album) {
		  clipBoard.value = '';
		  throw new HTML('FATAL: album title must be defined in every track' + ruleLink('2.3.16.4'));
		}
		if (!track.tracknumber) {
		  clipBoard.value = '';
		  throw new HTML('FATAL: all track numbers must be defined' + ruleLink('2.3.16.4'));
		}
		if (!track.title) {
		  clipBoard.value = '';
		  throw new HTML('FATAL: all track titles must be defined' + ruleLink('2.3.16.4'));
		}
		if (track.duration != undefined && isUpload && (isNaN(track.duration) || track.duration <= 0)) {
		  clipBoard.value = '';
		  throw 'FATAL: invalid track #' + track.tracknumber + ' length: ' + track.duration;
		}
		if (track.codec && !['FLAC', 'MP3', 'AAC', 'DTS', 'AC3'].includes(track.codec)) {
		  clipBoard.value = '';
		  throw 'FATAL: disallowed codec present (' + track.codec + ')';
		}
		if (/^(\d+)\s*[\/]\s*(\d+)$/.test(track.tracknumber)) { // track/totaltracks
		  addMessage('Warning: nonstandard track number formatting for track ' + RegExp.$1 + ': ' + track.tracknumber, 'ua-warning');
		  track.tracknumber = RegExp.$1;
		  if (!track.totaltracks) track.totaltracks = parseInt(RegExp.$2);
		} else if (/^(\d+)[\.\-](\d+)$/.test(track.tracknumber)) { // discnumber.tracknumber
		  addMessage('Warning: nonstandard track number formatting for track ' + RegExp.$2 + ': ' + track.tracknumber, 'ua-warning');
		  if (!track.discnumber) track.discnumber = parseInt(RegExp.$1);
		  track.tracknumber = RegExp.$2;
		}
		if (track.discnumber) {
		  if (/^(\d+)\s*\/\s*(\d+)/.test(track.discnumber)) {
			addMessage('Warning: nonstandard disc number formatting for track ' + track.tracknumber + ': ' + track.discnumber, 'ua-warning');
			track.discnumber = RegExp.$1;
			if (!track.totaldiscs) track.totaldiscs = RegExp.$2;
		  } else track.discnumber = parseInt(track.discnumber);
		  if (isNaN(track.discnumber)) {
			addMessage('Warning: invalid disc numbering for track ' + track.tracknumber, 'ua-warning');
			track.discnumber = undefined;
		  }
		  if (track.discnumber > release.totaldiscs) release.totaldiscs = track.discnumber;
		}
		if (track.description == '.') track.description = undefined;
		if (track.description) {
		  track.description = track.description.expand();
		  if (prefs.remap_texttools_newlines) track.description = track.description.replace(/__/g, '\r\n').replace(/_/g, '\n') // ambiguous
		  track.description = track.description.collapseGaps();
		}
		if (track.dr != null) track.dr = parseInt(track.dr); // DR0
		totalTime += track.duration;
		albumBitrate += track.bitrate * track.duration;
		albumSize += track.filesize;
	  });
	  if (!tracks.every(it => it.discnumber > 0) && !tracks.every(it => !it.discnumber)) {
		clipBoard.value = '';
		throw 'FATAL: inconsistent release (mix of tracks with and without disc number)';
	  }
	  if (release.totaldiscs > 1 && tracks.some(it => it.totaldiscs != release.totaldiscs))
		addMessage('Info: at least one track not having properly set TOTALDISCS (' + release.totaldiscs + ')', 'ua-info');

	  function setUniqueProperty(propName, propNameLiteral) {
		let homogeneous = new Set(tracks.map(it => it[propName]).filter(it => it != undefined && it != null));
		if (homogeneous.size > 1) {
		  var diverses = '', it = homogeneous.values(), val;
		  while (!(val = it.next()).done) diverses += '<br>\t' + val.value;
		  clipBoard.value = '';
		  throw new HTML('FATAL: mixed releases not accepted (' + propNameLiteral
			+ ') - supposedly user compilation' + diverses);
		}
		release[propName] = homogeneous.values().next().value;
	  }
	  setUniqueProperty('artist', 'album artist');
	  setUniqueProperty('album', 'album title');
	  setUniqueProperty('album_year', 'album year');
	  setUniqueProperty('release_date', 'release date');
	  setUniqueProperty('encoding', 'encoding');
	  setUniqueProperty('codec', 'codec');
	  setUniqueProperty('codec_profile', 'codec profile');
	  setUniqueProperty('vendor', 'vendor');
	  setUniqueProperty('media', 'media');
	  setUniqueProperty('channels', 'channels');
	  setUniqueProperty('label', 'label');
	  setUniqueProperty('country', 'country');

	  tracks.forEach(function(iter) {
		setProperty('trackArtists', 'track_artist');
		setProperty('totalTracks', 'totaltracks');
		setProperty('discSubtitles', 'discsubtitle');
		setProperty('composers', 'composer');
		setProperty('catalogs', 'catalog');
		setProperty('bitrates', 'bitrate');
		setProperty('bds', 'bd');
		setProperty('rgs', 'rg');
		setProperty('drs', 'dr');
		if (iter.sr) if (typeof release.srs[iter.sr] != 'number') release.srs[iter.sr] = iter.duration;
		  else release.srs[iter.sr] += iter.duration;
		setProperty('dirpaths', 'dirpath');
		setProperty('descriptions', 'description');
		setProperty('genres', 'genre');
		setProperty('urls', 'url');
		setProperty('coverUrls', 'cover_url');

		function setProperty(propName, trackProp) {
		  if (!Array.isArray(release[propName])) release[propName] = [];
		  if (iter[trackProp] !== undefined && iter[trackProp] !== null && (typeof iter[trackProp] != 'string'
				|| iter[trackProp].length > 0) && !release[propName].includes(iter[trackProp])) {
			release[propName].push(iter[trackProp]);
		  }
		}
	  });
	  if (!release.totalTracks) addMessage('Warning: total tracks not set', 'ua-warning');
	  if (release.totalTracks.length > 0) {
		if (release.totalTracks.length > 1) {
		  addMessage('Warning: total tracks not consistent across release: ' + release.totalTracks, 'ua-warning');
		} else if (release.totalTracks[0] != tracks.length) {
		  addMessage('Warning: total tracks not matching tracklist length: ' + release.totalTracks[0] + ' != ' +
			tracks.length, 'ua-warning');
		}
	  }
	  tracks.forEach(function(track1, ndx1) {
		if (tracks.some((track2, ndx2) => ndx2 < ndx1 && track1.tracknumber == track2.tracknumber
			&& track1.discnumber == track2.discnumber && track1.discsubtitle == track2.discsubtitle)) {
		  addMessage('Warning: duplicate track ' + (track1.discnumber ? track1.discnumber + '-' : '') +
			(track1.discsubtitle ? track1.discsubtitle + '-' : '') + track1.tracknumber, 'ua-warning');
		}
	  });
	  function validatorFunc(arr, validator, str) {
		if (arr.length <= 0 || !arr.some(validator)) return true;
		clipBoard.value = '';
		throw 'FATAL: disallowed ' + str + ' present (' + arr.filter(validator) + ')';
	  }
	  validatorFunc(release.bds, bd => ![16, 24].includes(bd), 'bit depths');
	  validatorFunc(Object.keys(release.srs),
		sr => sr < 44100 || sr > 192000 || sr % 44100 != 0 && sr % 48000 != 0, 'sample rates');
	  const dcRlsParser = /^https?:\/\/(?:\w+\.)*discogs\.com\/releases?\/(\d+)(?=$|\/|\?)/i;
	  var albumBPM = Math.round(tracks.reduce(function(acc, track) {
		return acc + parseInt(track.identifiers.BPM) * track.duration;
	  }, 0) / totalTime);
	  var composerEmphasis = false, isFromDSD = false, isClassical = false;
	  var canSort = tracks.every((tr1, ndx1) => tracks.every((tr2, ndx2) => ndx1 == ndx2
		|| tr1.tracknumber != tr2.tracknumber || tr1.discnumber != tr2.discnumber));
	  var yadg_prefil = '', releaseType, editionTitle, iter, rx;
	  var tags = new TagManager();
	  albumBitrate /= totalTime;
	  if (tracks.every(it => /^(?:single)$/i.test(it.identifiers.RELEASETYPE))
		  || tracks.length == 1 && totalTime > 0 && totalTime < prefs.single_threshold) {
		releaseType = getReleaseIndex('Single');
	  } else if (tracks.every(it => it.identifiers.RELEASETYPE == 'EP')) {
		releaseType = getReleaseIndex('EP');
	  } else if (tracks.every(it => /^soundtrack$/i.test(it.identifiers.RELEASETYPE))) {
		releaseType = getReleaseIndex('Soundtrack');
		tags.add('score');
		composerEmphasis = true;
	  }
	  if (release.genres.length > 0) {
		const classicalGenreParsers = [
		  /\b(?:Classical|Classique|Klassik|Symphony|Symphonic(?:al)?|Operas?|Operettas?|Ballets?|(?:Violin|Cello|Piano)\s+Solos?|Chamber|Choral|Choirs?|Orchestral|Etudes?|Duets|Concertos?|Cantatas?|Requiems?|Passions?|Mass(?:es)?|Oratorios?|Poems?|Sacred|Secular|Vocal\s+Music)\b/i,
		];
		release.genres.forEach(function(genre) {
		  classicalGenreParsers.forEach(function(classicalGenreParser) {
			if (classicalGenreParser.test(genre) && !/\b(?:metal|rock|pop)\b/i.test(genre)) {
			  composerEmphasis = true;
			  isClassical = true
			}
		  });
		  if (/\b(?:Jazz|Vocal)\b/i.test(genre) && !/\b(?:Nu|Future|Acid)[\s\-\−\—\–]*Jazz\b/i.test(genre)
			  && !/\bElectr(?:o|ic)[\s\-\−\—\–]?Swing\b/i.test(genre)) {
			composerEmphasis = true;
		  }
		  if (/\b(?:Soundtracks?|Score|Films?|Games?|Video|Series?|Theatre|Musical)\b/i.test(genre)) {
			if (!releaseType) releaseType = getReleaseIndex('Soundtrack');
			composerEmphasis = true;
		  }
		  if (/\b(?:Christmas\s+Music)\b/i.test(genre)) {
			composerEmphasis = true;
		  }
		  tags.add(...genre.split(/\s*\|\s*/));
		});
		if (release.genres.length > 1) {
		  addMessage('Warning: inconsistent genre accross album: ' + release.genres, 'ua-warning');
		}
	  }
	  if (isClassical && !tracks.every(track => track.composer)) {
		addMessage(new HTML('Warning: all tracks composers must be set for clasical music' + ruleLink('2.3.17')), 'ua-warning');
		//return false;
	  }
	  // Processing artists: recognition, splitting and dividing to categores
	  const ampersandParsers = [
		/\s+(?:meets|vs\.?|X)\s+/i,
		/\s*[;\/\|\×]\s*/,
		/\s+(?:[\&\+]|and)\s+(?!:his\b|her\b|Friends$|Strings$)/i, // /\s+(?:[\&\+]|and)\s+(?!(?:The|his|her|Friends)\b)/i,
		/\s*\+\s*(?!(?:his\b|her\b|Friends$|Strings$))/i,
	  ];
	  const featParsers = [
		/\s+(?:meets)\s+(.*?)\s*$/i,
		/\s+(?:[Ww]ith)\s+(?!:his\b|her\b|Friends$|Strings$)(.*?)\s*$/,
		/(?:\s+[\-\−\—\–\_])?\s+(?:[Ff](?:eaturing|t\.))\s+(.*?)\s*$/,
		/(?:\s+[\-\−\—\–\_])?\s+(?:[Ff]eat\.)\s+(.*?)\s*$/,
		/\s+\[\s*f(?:eat(?:\.|uring)|t\.)\s+([^\[\]]+?)\s*\]/i,
		/\s+\(\s*f(?:eat(?:\.|uring)|t\.)\s+([^\(\)]+?)\s*\)/i,
		/\s+\[\s*with\s+(?!:his\b|her\b|Friends$|Strings$)([^\[\]]+?)\s*\]/i,
		/\s+\(\s*with\s+(?!:his\b|her\b|Friends$|Strings$)([^\(\)]+?)\s*\)/i,
		/\s+\[\s*(?:(?:en\s+)?duo\s+)?avec\s+([^\[\]]+?)\s*\]/i,
		/\s+\(\s*(?:(?:en\s+)?duo\s+)?avec\s+([^\(\)]+?)\s*\)/i,
	  ];
	  const remixParsers = [
		/\s+\((?:The\s+)Remix(?:e[sd])?\)/i,
		/\s+\[(?:The\s+)Remix(?:e[sd])?\]/i,
		/\s+(?:The\s+)Remix(?:e[sd])?\s*$/i,
		/\s+\(([^\(\)]+?)(?:[\'\’\`]s)?\s+(?:(?:Extended|Enhanced)\s+)?Remix\)/i,
		/\s+\[([^\[\]]+?)(?:[\'\’\`]s)?\s+(?:(?:Extended|Enhanced)\s+)?Remix\]/i,
		/\s+\(\s*(?:(Extended|Enhanced)\s+)?Remix(?:ed)?\s+by\s+([^\(\)]+)\)/i,
		/\s+\[\s*(?:(Extended|Enhanced)\s+)?Remix(?:ed)?\s+by\s+([^\[\]]+)\]/i,
	  ];
	  const otherArtistsParsers = [
		[/^(.*?)\s+(?:under|(?:conducted)\s+by)\s+(.*)$/, 4],
		[/^()(.*?)\s+\(conductor\)$/i, 4],
		//[/^()(.*?)\s+\(.*\)$/i, 1],
	  ];
	  const artistStrips = [
		/\s+(?:aka|AKA)\.?\s+(.*)/,
		/\s+\([^\(\)]+\)$/,
		/\s+\[[^\[\]]+\]$/,
		/\s+\{[^\{\}]+\}$/,
	  ];
	  const roleCollisions = [
		[4, 5], // main
		[0, 4], // guest
		[], // remixer
		[], // composer
		[], // conductor
		[], // DJ/compiler
		[], // producer
	  ];
	  isVA = vaParser.test(release.artist);
	  var artists = [];
	  for (i = 0; i < 7; ++i) artists[i] = [];

	  if (!isVA) addArtists(0, yadg_prefil = spliceGuests(release.artist));
	  var albumGuests = Array.from(artists[1]);

	  featParsers.slice(3).forEach(function(rx, __a, ndx) {
		matches = rx.exec(release.album);
		if (matches != null && (ndx < 2 || splitArtists(matches[1]).every((artist) => looksLikeTrueName(artist, 1)))) {
		  addArtists(1, matches[1]);
		  addMessage('Warning: featured artist(s) in album title (' + release.album + ')', 'ua-warning');
		  release.album = release.album.replace(rx, '');
		}
	  });
	  remixParsers.slice(3).forEach(function(rx) {
		if (rx.test(release.album)) addArtists(2, RegExp.$1.replace(/\b\d{4}\b/g, '').replace(/\s{2,}/g, ' ').trim());
	  })
	  if (((matches = /^(.*?)\s+Presents\s+(.*)$/.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 = getReleaseIndex('Compilation');
	  }

	  for (iter of tracks) {
		addTrackPerformers(iter.track_artist);
		addTrackPerformers(iter.performer);
		addArtists(2, iter.remixer);
		addArtists(3, iter.composer);
		addArtists(4, iter.conductor);
		addArtists(5, iter.compiler);
		addArtists(6, iter.producer);

		if (iter.title) {
		  featParsers.slice(3).forEach(function(rx, ndx) {
			matches = rx.exec(iter.title);
			if (matches != null && (ndx < 2 || splitArtists(matches[1]).every((artist) => looksLikeTrueName(artist, 1)))) {
			  iter.track_artist = (!isVA && (!iter.track_artist || iter.track_artist.includes(matches[1])) ?
				iter.artist : iter.track_artist) + ' feat. ' + matches[1];
			  addArtists(1, matches[1]);
			  addMessage('Warning: featured artist(s) in track title (#' + iter.tracknumber + ': ' + iter.title + ')', 'ua-warning');
			  iter.title = iter.title.replace(rx, '');
			}
		  });
		  if (!iter.remixer) remixParsers.slice(3).forEach(function(rx) {
			if (rx.test(iter.title)) addArtists(2, RegExp.$1.replace(/\b\d{4}\b/g, '').replace(/\s{2,}/g, ' ').trim());
		  });
		}
		if (isClassical && !iter.composer && /^([^\(\)\[\]\{\},:]+?)(?:\s*\(\d{4}\s*-\s*\d{4}\))/.test(iter.discsubtitle)) {
		  //track.composer = RegExp.$1;
		  addArtists(3, RegExp.$1);
		}
	  }
	  for (i = 0; i < Math.round(tracks.length / 2); ++i) splitAmpersands();

	  function addArtists(ndx, str) {
		if (str) splitArtists(str).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(str) {
		if (str) splitArtists(spliceGuests(str, 1)).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 splitArtists(str) {
		var result = [str];
		multiArtistParsers.forEach(function(multiArtistParser) {
		  for (i = result.length; i > 0; --i) {
			var j = result[i - 1].split(multiArtistParser);
			if (j.length >= 2 && 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() {
		for (var ndx = 0; ndx < artists.length; ++ndx) {
		  ampersandParsers.forEach(function(ampersandParser) {
			for (var i = artists[ndx].length; i > 0; --i) {
			  var j = artists[ndx][i - 1].split(ampersandParser);
			  if (j.length >= 2 && j.every(twoOrMore) && !getSiteArtist(artists[ndx][i - 1])
				  && (j.some(it1 => artists.some(it2 => it2.includesCaseless(it1))) || j.every(looksLikeTrueName))) {
				artists[ndx].splice(i - 1, 1, ...j.filter(function(artist) {
				  return !artists[ndx].includesCaseless(artist)
				  && !pseudoArtistParsers.some(rx => rx.test(artist))
				  && !roleCollisions[ndx].some(n => artists[n].includesCaseless(artist));
				}));
			  }
			}
		  });
		}
	  }
	  function spliceGuests(str, level = 1) {
		(level ? featParsers.slice(level) : featParsers).forEach(function(it) {
		  if (it.test(str)) {
			addArtists(1, RegExp.$1);
			str = str.replace(it, '');
		  }
		});
		return str;
	  }
	  function guessOtherArtists(name) {
		otherArtistsParsers.forEach(function(it) {
		  if (!it[0].test(name)) return;
		  addArtists(it[1], RegExp.$2);
		  name = RegExp.$1;
		});
		return strip(name);
	  }
	  function getSiteArtist(artist) {
		if (!artist || notSiteArtistsCache.includesCaseless(artist)) return null;
		var key = Object.keys(siteArtistsCache).find(it => it.toLowerCase() == artist.toLowerCase());
		if (key) return siteArtistsCache[key];
		xhr.open('GET', 'https://' + document.domain + '/ajax.php?action=artist&artistname=' + encodeURIComponent(artist), false);
		xhr.send();
		if (xhr.readyState != 4 || xhr.status != 200) {
		  console.log('getSiteArtist("' + artist + '"): XMLHttpRequest readyState:' + xhr.readyState + ' status:' + xhr.status);
		  return undefined; // error
		}
		var response = JSON.parse(xhr.responseText);
		if (response.status != 'success') {
		  notSiteArtistsCache.pushUniqueCaseless(artist);
		  return null;
		}
		return (siteArtistsCache[artist] = response.response);
	  }
	  function twoOrMore(artist) { return artist.length >= 2 && !pseudoArtistParsers.some(rx => rx.test(artist)) };
	  function looksLikeTrueName(artist, index = 0) {
		return twoOrMore(artist)
		  && (index == 0 || !/^(?:his\b|her\b|Friends$|Strings$)/i.test(artist))
		  && artist.split(/\s+/).length >= 2
		  && !pseudoArtistParsers.some(rx => rx.test(artist)) || getSiteArtist(artist);
	  }
	  function strip(art) { return artistStrips.reduce((acc, it) => acc.replace(it, ''), art) }
	  function getRealTrackArtist(track) {
		if (typeof track != 'object') return null;
		if (track.track_artist == release.artist) return undefined;
		var trackArtist = track.track_artist;
		if (trackArtist && !isVA) {
		  let trackArtists = [], trackGuests = [], ta = trackArtist;
		  featParsers.slice(1).forEach(function(it) {
			if (!it.test(ta)) return;
			trackGuests.pushUniqueCaseless(RegExp.$1);
			ta = ta.replace(it, '');
		  });
		  splitArtists(ta).forEach(function(artist) {
			otherArtistsParsers.forEach(it => { if (it[0].test(artist)) artist = RegExp.$1 });
			artist = strip(artist);
			if (artist.length > 0 && !pseudoArtistParsers.some(rx => rx.test(artist))) trackArtists.pushUniqueCaseless(artist);
		  });
		  splitAmpersands(trackArtists);
		  splitAmpersands(trackGuests);
		  if (trackArtists.equalTo(artists[0]) && trackGuests.equalTo(albumGuests)) trackArtist = undefined;

		  function splitAmpersands(array) {
			ampersandParsers.forEach(function(ampersandParser) {
			  for (var i = array.length; i > 0; --i) {
				var j = array[i - 1].split(ampersandParser);
				if (j.length >= 2 && j.every(twoOrMore) && !getSiteArtist(array[i - 1])
					&& (j.some(it1 => artists.some(it2 => it2.includesCaseless(it1))) || j.every(looksLikeTrueName))) {
				  array.splice(i - 1, 1, ...j.filter(function(artist) {
					return !array.includesCaseless(artist) && !pseudoArtistParsers.some(rx => rx.test(artist));
				  }));
				}
			  }
			});
		  }
		}
		return trackArtist;
	  }

	  if (elementWritable(document.getElementById('artist'))) {
		let artistIndex = 0;
		catLoop: for (i = 0; i < 7; ++i) for (iter of artists[i]
			.filter(artist => !roleCollisions[i].some(n => artists[n].includesCaseless(artist)))
			.sort((a, b) => a.localeCompare(b))) {
		  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) break catLoop;
		}
		if (overwrite && artistIndex > 0) while (document.getElementById('artist_' + artistIndex) != null) {
		  removeArtistField();
		}
	  }

	  // Processing album title
	  const editionParsers = [
		/\s+\(((?:Remaster(?:ed)?|Remasterizado|Remasterisée|Reissu(?:ed)?|Deluxe|Enhanced|Expanded|Limited|Version)\b[^\(\)]*|[^\(\)]*\b(?:Edition|Version|Promo|Release|Édition))\)$/i,
		/\s+\[((?:Remaster(?:ed)?|Remasterizado|Remasterisée|Reissu(?:ed)?|Deluxe|Enhanced|Expanded|Limited|Version)\b[^\[\]]*|[^\[\]]*\b(?:Edition|Version|Promo|Release|Édition))\]$/i,
		/\s+-\s+([^\[\]\(\)\-\−\—\–]*\b(?:(?:Remaster(?:ed)?|Remasterizado|Remasterisée|Bonus\s+Track)\b[^\[\]\(\)\-\−\—\–]*|Reissue|Edition|Version|Promo|Enhanced|Release|Édition))$/i
	  ];
	  const mediaParsers = [
		[/\s+(?:\[(?:LP|Vinyl|12"|7")\]|\((?:LP|Vinyl|12"|7")\))$/, 'Vinyl'],
		[/\s+(?:\[SA-?CD\]|\(SA-?CD\))$/, 'SACD'],
		[/\s+(?:\[(?:Blu[\s\-\−\—\–]?Ray|BD|BRD?)\]|\((?:Blu[\s\-\−\—\–]?Ray|BD|BRD?)\))$/, 'Blu-Ray'],
		[/\s+(?:\[DVD(?:-?A)?\]|\(DVD(?:-?A)?\))$/, 'DVD'],
	  ];
	  const releaseTypeParsers = [
		[/\s+(?:-\s+Single|\[Single\]|\(Single\))$/i, 'Single', true, true],
		[/\s+(?:(?:-\s+)?EP|\[EP\]|\(EP\))$/, 'EP', true, true],
		[/\s+\((?:Live|En\s+directo?|Ao\s+Vivo)\b[^\(\)]*\)$/i, 'Live album', false, false],
		[/\s+\[(?:Live|En\s+directo?|Ao\s+Vivo)\b[^\[\]]*\]$/i, 'Live album', false, false],
		[/(?:^Live\s+(?:[aA]t|[Ii]n)\b|^Directo?\s+[Ee]n\b|\bUnplugged\b|\bAcoustic\s+Stage\b|\s+Live$)/, 'Live album', false, false],
		[/\b(?:(?:Best\s+of|Greatest\s+Hits|Complete\s+(.+?\s+)(?:Albums|Recordings))\b|Collection$)|^The(\s+\w+)+Years$/i, 'Anthology', false, false],
	  ];
	  var album = release.album;
	  releaseTypeParsers.forEach(function(it) {
		if (it[0].test(album)) {
		  if (it[2] || !releaseType) releaseType = getReleaseIndex(it[1]);
		  if (it[3]) album = album.replace(it[0], '');
		}
	  });
	  rx = '\\b(?:Soundtrack|Score|Motion\\s+Picture|Series|Television|Original(?:\\s+\\w+)?\\s+Cast|Music\\s+from|(?:Musique|Bande)\\s+originale)\\b';
	  if (reInParenthesis(rx).test(album) || reInBrackets(rx).test(album)) {
		if (!releaseType) releaseType = getReleaseIndex('Soundtrack');
		tags.add('score');
		composerEmphasis = true;
	  }
	  remixParsers.forEach(function(rx) {
		if (rx.test(album) && !releaseType) releaseType = getReleaseIndex('Remix');
	  });
	  editionParsers.forEach(function(rx) {
		if (rx.test(album)) {
		  album = album.replace(rx, '');
		  editionTitle = RegExp.$1;
		}
	  });
	  mediaParsers.forEach(function(it) {
		if (it[0].test(album)) {
		  album = album.replace(it[0], '');
		  media = it[1];
		}
	  });
	  if (elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		ref.value = 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 || '';
	  }
	  i = release.release_date && extractYear(release.release_date);
	  if (elementWritable(ref = document.getElementById('remaster_year'))
		  || !isUpload && i > 0 && (ref = document.querySelector('input[name="year"]')) != null && !ref.disabled) {
		ref.value = i || '';
	  }
	  //if (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.$1 : null);
		version = version.homogeneous() && version[0] || undefined;
		if (!editionTitle && /\b(?:Remastered|Remasterisée|Remasterizado|Acoustic|Instrumental)\b/i.test(version)) {
		  editionTitle = version;
		}
		if (!releaseType && /\b(?:Live)\b/i.test(version)) releaseType = getReleaseIndex('Live album');
	  });
	  if (elementWritable(ref = document.getElementById('remaster_title'))) {
		ref.value = editionTitle || '';
	  }
	  if (elementWritable(ref = document.getElementById('remaster_record_label') || document.querySelector('input[name="recordlabel"]'))) {
		ref.value = release.label ?
		  !isVA && release.label == release.artist || /^(?:independent|vlastní\s+náklad)$/i.test(release.label) ?
		  	'self-released' : release.label.split(/\s*;\s*/g).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 br_isSet = (ref = document.getElementById('bitrate')) != null && ref.value;
	  if (elementWritable(ref = document.getElementById('format'))) {
		ref.value = release.codec || '';
		ref.onchange(); //exec(function() { Format() });
	  }
	  if (isRequestNew) {
		if (prefs.always_request_perfect_flac) reqSelectFormats('FLAC');
			else if (release.codec) reqSelectFormats(release.codec);
	  }
	  var sel;
	  if (release.encoding == 'lossless') {
		sel = release.bds.includes(24) ? '24bit Lossless' : 'Lossless';
	  } else if (release.bitrates.length >= 1) {
		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') {
		  sel = lame_version >= 3094 ? 'V0 (VBR)' : 'APX (VBR)'
		} else if (release.codec == 'MP3' && release.codec_profile == 'VBR V1') {
		  sel = 'V1 (VBR)'
		} else if (release.codec == 'MP3' && release.codec_profile == 'VBR V2') {
		  sel = lame_version >= 3094 ? sel = 'V2 (VBR)' : 'APS (VBR)'
		} else if (release.bitrates.length == 1 && [192, 256, 320].includes(Math.round(release.bitrates[0]))) {
		  sel = Math.round(release.bitrates[0]);
		} else {
		  sel = 'Other';
		}
	  }
	  if ((ref = document.getElementById('bitrate')) != null && !ref.disabled && (overwrite || !br_isSet)) {
		ref.value = sel || '';
		ref.onchange(); //exec(function() { Bitrate() });
		if (sel == '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 (sel) reqSelectBitrates(sel);
	  }
	  if (release.media) {
		sel = undefined;
		[
		  [/\b(?:WEB|File|Download|digital\s+media)\b/i, 'WEB'],
		  [/\bCD\b/, 'CD'],
		  [/\b(?:SA-?CD|[Hh]ybrid)\b/, 'SACD'],
		  [/\b(?:[Bb]lu[\-\−\—\–\s]?[Rr]ay|BRD?|BD)\b/, 'Blu-Ray'],
		  [/\bDVD(?:-?A)?\b/, 'DVD'],
		  [/\b(?:[Vv]inyl\b|LP\b|12"|7")/, 'Vinyl'],
		].forEach(k => { if (k[0].test(release.media)) sel = k[1] });
		media = sel || media;
	  }
	  if (!media) {
		if (tracks.every(isRedBook)) {
		  addMessage('Info: media not determined - CD estimated', 'ua-info');
		  media = 'CD';
		} else if (tracks.some(t => t.bd > 16 || (t.sr > 0 && t.sr != 44100) || t.samples > 0 && t.samples % 588 != 0)) {
		  addMessage('Info: media not determined - NOT CD', 'ua-info');
		}
	  } else if (media != 'CD' && tracks.every(isRedBook)) {
		addMessage('Info: CD as source media is estimated (' + media + ')', 'ua-info');
	  }
	  if (elementWritable(ref = document.getElementById('media'))) ref.value = media || '';
	  if (isRequestNew) {
		if (prefs.always_request_perfect_flac) reqSelectMedias('WEB', 'CD', 'Blu-Ray', 'DVD', 'SACD')
			else if (media) reqSelectMedias(media);
	  }
	  function isRedBook(t) {
		return t.bd == 16 && t.sr == 44100 && t.channels == 2 && t.samples > 0 && t.samples % 588 == 0;
	  }
	  if (tracks.every(it => it.identifiers.ORIGINALFORMAT && it.identifiers.ORIGINALFORMAT.includes('DSD'))) {
		isFromDSD = true;
	  }
	  // Release type
	  if (!releaseType) {
		if (/\b(?:Mixtape)\b/i.test(release.album)) releaseType = getReleaseIndex('Mixtape');
		else if (isVA) releaseType = getReleaseIndex('Compilation');
		else if (tracks.every(it => it.identifiers.COMPILATION == 1)) releaseType = getReleaseIndex('Anthology');
	  }
	  if ((!releaseType || releaseType == 5) && totalTime <= prefs.EP_threshold && tracks.every(function(track) {
		const rxs = [/\s+\([^\(\)]+\)\s*$/, /\s+\[[^\[\]]+\]\s*$/];
		return rxs.reduce((acc, rx) => acc.replace(rx, ''), track.title)
		  	== rxs.reduce((acc, rx) => acc.replace(rx, ''), tracks[0].title);
	  })) {
		releaseType = getReleaseIndex('Single');
	  }
	  if (!releaseType) if (totalTime > 0 && totalTime < prefs.single_threshold) {
		releaseType = getReleaseIndex('Single');
	  } else if (totalTime > 0 && totalTime < prefs.EP_threshold) {
		releaseType = getReleaseIndex('EP');
	  }
	  if ((ref = document.getElementById('releasetype')) != null && !ref.disabled
		  && (overwrite || ref.value == 0 || ref.value == '---')) ref.value = releaseType || getReleaseIndex('Album');
	  // Tags
	  if (prefs.estimate_decade_tag && (isNaN(totalTime) || totalTime < 2 * 60 * 60)
		  && release.album_year > 1900 && [1, 3, 5, 9, 13, undefined].includes(releaseType)
		  /*&& !/\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 (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 && !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('Warning: doubled parentheses in track #' +
			track.tracknumber + ' title ("' + track.title + '")', 'ua-warning');
		  //track.title.replace(rx, RegExp.$1);
		});
	  });
	  if (tracks.length > 1 && tracks.map(track => track.title).homogeneous()) {
		addMessage('Warning: all tracks having same title: ' + tracks[0].title, 'ua-warning');
	  }
	  if (isUpload) findPreviousUploads();
	  // Album description
	  url = release.urls.length == 1 && release.urls[0] || getStoreUrl();
	  const vinylTest = /^((?:Vinyl|LP) rip by\s+)(.*)$/im;
	  const vinyltrackParser = /^([A-Z])[\-\.\s]?((\d+)(?:\.\d+)?)$/;
	  const classicalWorkParsers = [
		/^(.*\S):\s+(.*)$/,
		/^(.+?):\s+([IVXC]+\.\s+.*)$/,
	  ];
	  var description;
	  if (isRequestNew || isRequestEdit) { // request
		description = []
		if (release.release_date) {
		  i = new Date(release.release_date);
		  let today = new Date(new Date().toDateString());
		  description.push((isNaN(i) || i < today ? 'Released' : 'Releasing') + ' ' +
			(isNaN(i) ? release.release_date : i.toDateString()));
		  if ((ref = document.getElementById('tags')) != null && !ref.disabled) {
			let tags = new TagManager(ref.value);
			if (prefs.upcoming_tags && i >= today) tags.add(prefs.upcoming_tags);
			ref.value = tags.toString();
		  }
		}
		if (!prefs.include_tracklist_in_request) {
		  let summary = '';
		  if (release.totaldiscs > 1) summary += release.totaldiscs + ' discs, ';
		  summary += tracks.length + ' track'; if (tracks.length > 1) summary += 's';
		  if (totalTime > 0) summary += ', ' + makeTimeString(totalTime);
		  description.push(summary);
		}
		if (url) description.push('[url]' + url + '[/url]');
		if (release.catalogs.length == 1 && /^\d{10,}$/.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 == 1) description.push(release.descriptions[0]);
		description = genAlbumHeader().concat(description.join('\n\n'));
		if (description.length > 0) {
		  ref = document.getElementById('description');
		  if (elementWritable(ref)) {
			ref.value = description;
		  } else if (isRequestEdit && ref != null && !ref.disabled) {
			ref.value = ref.textLength > 0 ? ref.value.concat('\n\n', description) : ref.value = description;
			preview(0);
		  }
		}
	  } else { // upload
		description = '';
		if (prefs.bpm_summary && albumBPM > 0) {
		  if (description.length <= 0) description = '\n';
		  description += '\nAverage album BPM: [code]' + albumBPM + '[/code]';
		}
		/*if (release.release_date) {
		  let rd = new Date(release.release_date);
		  if (!isNaN(rd)) description = '\n\nRelease date: ' + rd.toDateString();
		}*/
		let vinylRipInfo;
		if (release.descriptions.length == 1 && release.descriptions[0]) {
		  description += '\n\n';
		  if ((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[0];
		}
		if (elementWritable(ref = document.getElementById('album_desc'))) {
		  ref.value = genPlaylist().concat(description);
		  preview(0);
		}
		if ((ref = document.getElementById('body') || document.querySelector('textarea[name="body"]')) != null
			&& !ref.disabled) {
		  if (ref.textLength == 0) ref.value = genPlaylist().concat(description); else {
			let editioninfo = '';
			if (editionTitle) {
			  editioninfo = '[size=5][b]' + editionTitle;
			  if (release.release_date && (i = extractYear(release.release_date)) > 0) editioninfo += ' (' + i + ')';
			  editioninfo += '[/b][/size]\n\n';
			}
			ref.value = ref.value.concat('\n\n', editioninfo, genPlaylist(false, false), description);
		  }
		  preview(0);
		}
		// Release description
		if (elementWritable(ref = document.getElementById('release_samplerate'))) {
		  ref.value = Object.keys(release.srs).length == 1 ? Math.floor(Object.keys(release.srs)[0] / 1000) :
		  Object.keys(release.srs).length > 1 ? '999' : '';
		}
		let lineage = '', rlsDesc = '';
		let drInfo = '[hide=DR' + (release.drs.length == 1 ? release.drs[0] : '') + '][pre][/pre]';
		let hasSR = Object.keys(release.srs).length > 0;
		let srInfo = hasSR ? Object.keys(release.srs).sort((a, b) => release.srs[b] - release.srs[a])
		.map(f => f / 1000).join('/').concat('kHz') : null;
		if (release.bds.some(bd => bd > 16)) {
		  if (['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.srs).length > 1);
			if (hassr) lineage = srInfo + ' ';
			if (vinylRipInfo) {
			  vinylRipInfo[0] = vinylRipInfo[0].replace(vinylTest, '$1[color=blue]$2[/color]');
			  if (hassr) vinylRipInfo[0] = vinylRipInfo[0].replace(/^Vinyl\b/, 'vinyl');
			  lineage += vinylRipInfo[0] + '\n\n[u]Lineage:[/u]' + vinylRipInfo.slice(1).map(l => '\n'.concat([
				// 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', 'Post-processing'],
			  ].reduce((acc, it) => acc.replace(it[0], it[1]), l))).join('');
			} else lineage += (hassr ? 'Vinyl' : ' vinyl') + ' rip by [color=blue][/color]\n\n[u]Lineage:[/u]\n';
			let imgs = '\n[img][/img]'.repeat(6);
			if (!isNWCD) drInfo += '\n'.concat(imgs); else lineage += '\n\n[hide]'.concat(imgs.slice(1), '[/hide]');
			drInfo += '[/hide]';
		  } else { // WEB Hi-Res
			if (!isNWCD || Object.keys(release.srs).length > 1) rlsDesc = srInfo;
			if (release.channels && release.channels != 2) addChannelInfo();
			if (isFromDSD) addDSDInfo();
			if (!isFromDSD || prefs.cleanup_descriptions) addDRInfo();
			//addRGInfo();
			addHybridInfo();
			if (isFromDSD || prefs.cleanup_descriptions || Object.keys(release.srs).length == 1
				&& Object.keys(release.srs)[0] == 88200) drInfo += '[/hide]'; else drInfo = null;
		  }
		} else { // 16bit or lossy
		  if (Object.keys(release.srs).some(f => f != 44100)) rlsDesc = srInfo;
		  if (release.channels && release.channels != 2) 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' .concat(nfo); else {
			if (rlsDesc.length > 0) rlsDesc += ' from'; else rlsDesc = 'From';
			rlsDesc += nfo;
		  }
		}
		function addDRInfo() {
		  if (release.drs.length < 1 || document.getElementById('release_dynamicrange') != null) return;
		  var nfo = 'DR' + release.drs[0];
		  if (release.drs[0] < 4) nfo = '[color=red]'.concat(nfo, '[/color]');
		  if (rlsDesc.length > 0) rlsDesc += ' | ';
		  rlsDesc += nfo;
		}
		function addRGInfo() {
		  if (release.rgs.length != 1) return;
		  if (rlsDesc.length > 0) rlsDesc += ' | ';
		  rlsDesc += 'RG'; //rlsDesc += 'RG ' + rgs[0];
		}
		function addChannelInfo() {
		  if (!release.channels) return;
		  var chi = getChanString(release.channels);
		  if (chi.length <= 0) return;
		  if (rlsDesc.length > 0) rlsDesc += ', '; else rlsDesc = 'Channels configuration: ';
		  rlsDesc += chi;
		}
		function addHybridInfo() {
		  if (release.bds.length > 1) release.bds.filter(bd => bd != 24).forEach(function(bd) {
			var hybrid_tracks = tracks.filter(it => it.bd == bd).sort(trackComparer).map(function(it) {
			  return (release.totaldiscs > 1 && it.discnumber ? it.discnumber + '-' : '').concat(it.tracknumber);
			});
			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') + ' ' + bd + 'bit lossless';
		  });
		}
		if (url) var srcinfo = urlParser.test(url) ? '[url]' + url + '[/url]' : url;
		rlsDesc = rlsDesc.length > 0 ? [rlsDesc] : [];
		if ((ref = document.getElementById('release_lineage')) != null) {
		  lineage = lineage ? [lineage] : [];
		  if (drInfo) rlsDesc.push(drInfo);
		  if (url) lineage.push(srcinfo);
		  if (elementWritable(ref)) {
			ref.value = lineage.join('\n\n');
			preview(1);
		  }
		} else {
		  if (lineage.length > 0) rlsDesc.push(lineage);
		  if (drInfo) rlsDesc.push(drInfo);
		  if (url) rlsDesc.push(srcinfo);
		}
		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' && release.codec == 'FLAC'
			&& release.bds.includes(24) && release.dirpaths.length == 1) {
		  if ((ref = document.getElementById('release_desc')) != null) GM_xmlhttpRequest({
			method: 'GET',
			url: new URL('file://'.concat(release.dirpaths[0], '\\foo_dr.txt')).href,
			responseType: 'blob',
			onload: function(response) {
			  if (response.readyState != 4 || response.status != 200) return;
			  if (/(\[hide=DR\d*\]\[pre\])\[\/pre\]/im.test(ref.value)) {
			  	var ndx = RegExp.lastIndex + RegExp.$1.length;
			  	ref.value = ref.value.slice(0, ndx).concat(response.responseText, ref.value.slice(ndx));
			  }
			},
			onerror: error => { console.error('foo_dr.txt not exists or is forbidden to read') },
			onabort: abort => { console.error('XHR: abort') },
			ontimeout: timeout => { console.error('XHR: timeout') },
		  });
		}
	  }
	  if (!isNWCD && elementWritable(document.getElementById('image') || document.querySelector('input[name="image"]'))) {
		if (release.coverUrls.length == 1) setCover(release.coverUrls[0]).catch(searchCoverOnline);
			else getCoverOnline();
	  }
	  if (elementWritable(ref = document.getElementById('release_dynamicrange'))) {
		ref.value = release.drs.length == 1 ? release.drs[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';
		}
		exec(function() { Calculate() });
	  }
	  if (!onlineSource && prefs.check_integrity_online) (url ? fetchOnline_Music(url, true) : Promise.reject('No URL'))
		.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 result');
		}))
		.then(onlineCheck)
		.catch(function(reason) {
		  if (!media || media == 'WEB') tracks.forEach(function(track) {
			if (track.duration < 29.6 || iter.duration > 30.4) return;
			addMessage('Warning: track ' + track.tracknumber + ' possible track preview', 'ua-warning');
		  });
		});
	  if (prefs.clean_on_apply) clipBoard.value = '';
	  prefs.save();
	  return;

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

	  function genPlaylist(pad = true, header = true) {
		var style = prefs.tracklist_style;
		if (!style || style <= 0) return null;
		if (style == 2 && (tracks.map(track => track.title).some(notMonospaced))
			|| tracks.map(track => track.track_artist).some(notMonospaced)
			|| composerEmphasis && tracks.map(track => track.composer).some(notMonospaced)) style = 1;
		var playlist = '';
		if (tracks.length > 1 || isRequestNew || isRequestEdit) {
		  if (pad && isRED) playlist += '[pad=5|0|0|0]';
		  if (header) playlist += genAlbumHeader();
		  playlist += '[size=4][color=' + prefs.tracklist_head_color + '][b]Tracklisting[/b][/color][/size]';
		  if (pad && isRED) playlist += '[/pad]';
		  playlist += '\n'; //'[hr]';
		  let lastDisc, lastSubtitle, lastWork, lastSide, vinylTrackWidth;
		  let block = 0, classicalWorks = new Map();
		  if (composerEmphasis /*isClassical*/ && !tracks.some(it => it.discsubtitle)) {
			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 = 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)) {
				if (work.map(it => it.track_artist).homogeneous()) classicalWorks.get(iter).performer = work[0].track_artist;
				if (work.map(it => it.composer).homogeneous()) classicalWorks.get(iter).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.discnumber, undefined])), tnOffset = 0;
		  volumes.forEach(function(val, key) {
			volumes.set(key, new Set(tracks.filter(it => it.discnumber == key).map(it => it.discsubtitle)).size)
		  });
		  if (!tracks.every(it => !isNaN(parseInt(it.tracknumber.toString())))
			  && !tracks.every(it => vinyltrackParser.test(it.tracknumber.toString().toUpperCase()))) {
			addMessage('Warning: inconsistent tracks numbering (' + tracks.map(it => it.tracknumber) + ')', 'ua-warning');
		  }
		  vinylTrackWidth = tracks.reduce(function(acc, it) {
			return Math.max(vinyltrackParser.test(it.tracknumber.toString().toUpperCase()) && parseInt(RegExp.$3), acc);
		  }, 0);
		  if (vinylTrackWidth) {
			vinylTrackWidth = vinylTrackWidth.toString().length;
			tracks.forEach(function(it) {
			  if (vinyltrackParser.test(it.tracknumber.toString().toUpperCase()) != null)
				it.tracknumber = RegExp.$1 + RegExp.$3.padStart(vinylTrackWidth, '0');
			});
			++vinylTrackWidth;
		  }
		  if (release.totaldiscs < 2 && tracks.reduce(computeLowestTrack, undefined) - 1)
			addMessage('Info: volume ' + iter.discnumber + ' track numbering not starting from 1', 'ua-info');
		  const padStart = '[pad=0|0|5|0]';
		  if (canSort && prefs.sort_tracklist) tracks.sort(trackComparer);
		  for (iter of tracks) {
			var trackArtist = getRealTrackArtist(iter), title = '';
			var ttwidth = vinylTrackWidth || (release.totaldiscs > 1 && iter.discnumber ?
				tracks.filter(it => it.discnumber == iter.discnumber) : tracks).reduce(function (accumulator, it) {
			  return Math.max(accumulator, (parseInt(it.tracknumber) || it.tracknumber).toString().length);
			}, 2);
			function realTrackNumber() {
			  var tn = parseInt(iter.tracknumber);
			  return isNaN(tn) ? iter.tracknumber : (tn - tnOffset).toString().padStart(ttwidth, '0');
			}
			switch (style) {
			  case 1: {
				prologue('[size=' + prefs.tracklist_size + ']', '[/size]\n');
				track = '[b][color=' + prefs.tracklist_tracknumber_color + ']';
				track += realTrackNumber();
				track += '[/color][/b]' + prefs.title_separator;
				if (trackArtist && (!iter.classical_work || !classicalWorks.get(iter.classical_work).performer)) {
				  title = '[color=' + prefs.tracklist_artist_color + ']' + trackArtist + '[/color] - ';
				}
				title += iter.classical_title || iter.title;
				if (iter.composer && composerEmphasis && release.composers.length != 1
					&& (!iter.classical_work || !classicalWorks.get(iter.classical_work).composer)) {
				  title = title.concat(' [color=', prefs.tracklist_composer_color, '](', iter.composer, ')[/color]');
				}
				playlist += track + title;
				if (iter.duration) playlist += ' [i][color=' + prefs.tracklist_duration_color +'][' +
				  makeTimeString(iter.duration) + '][/color][/i]';
				break;
			  }
			  case 2: {
				prologue('[size=' + prefs.tracklist_size + '][pre]', '[/pre][/size]');
				track = realTrackNumber();
				track += prefs.title_separator;
				if (trackArtist && (!iter.classical_work || !classicalWorks.get(iter.classical_work).performer)) {
				  title = trackArtist + ' - ';
				}
				title += iter.classical_title || iter.title;
				if (composerEmphasis && iter.composer && release.composers.length != 1
					&& (!iter.classical_work || !classicalWorks.get(iter.classical_work).composer)) {
				  title = title.concat(' (', iter.composer, ')');
				}
				let l = 0, j, left, padding, spc;
				duration = iter.duration ? '[' + makeTimeString(iter.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 - 2;
				  } else playlist += '\n' + ' '.repeat(track.length) + left;
				  title = title.slice(j).trim();
				}
				break;
			  }
			}
		  }
		  switch (style) {
			case 1:
			  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;
		  }

		  function computeLowestTrack(acc, track) {
			if (Number.isNaN(acc)) return NaN;
			var tn = parseInt(track.tracknumber);
			if (isNaN(tn)) return NaN;
			return isNaN(acc) || tn < acc ? tn : acc;
		  }

		  function prologue(prefix, postfix) {
			function block1() {
			  if (block == 3) playlist += postfix;
			  playlist += '\n';
			  if (isRED && ![1, 2].includes(block)) playlist += padStart;
			  block = 1;
			}
			function block2() {
			  if (block == 3) playlist += postfix;
			  playlist += '\n';
			  if (isRED && ![1, 2].includes(block)) playlist += padStart;
			  block = 2;
			}
			function block3() {
			  //if (block == 2 && isRED) playlist += '[hr]';
			  if (isRED && [1, 2].includes(block)) playlist += '[/pad]';
			  playlist += '\n';
			  if (block != 3) playlist += prefix;
			  block = 3;
			}
			if (release.totaldiscs > 1 && iter.discnumber != lastDisc) {
			  block1();
			  lastDisc = iter.discnumber;
			  lastSubtitle = lastWork = undefined;
			  playlist += '[color=' + prefs.tracklist_disctitle_color + '][size=3][b]';
			  if (iter.identifiers.VOL_MEDIA && tracks.filter(it => it.discnumber == iter.discnumber)
				  .every(it => it.identifiers.VOL_MEDIA == iter.identifiers.VOL_MEDIA)) {
				playlist += iter.identifiers.VOL_MEDIA.toUpperCase() + ' ';
			  }
			  playlist += 'Disc ' + iter.discnumber;
			  if (iter.discsubtitle && (volumes.get(iter.discnumber) || 0) == 1) {
				playlist += ' – ' + iter.discsubtitle;
				lastSubtitle = iter.discsubtitle;
			  }
			  playlist += '[/b][/size]';
			  duration = tracks.filter(it => it.discnumber == iter.discnumber)
				.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.discnumber == iter.discnumber).reduce(computeLowestTrack, undefined) - 1 || 0;
			  if (tnOffset) addMessage('Info: volume ' + iter.discnumber + ' track numbering not starting from 1', 'ua-info');
			}
			if (iter.discsubtitle != lastSubtitle) {
			  if (block != 1 || iter.discsubtitle) block1();
			  if (iter.discsubtitle) {
				playlist += '[color=' + prefs.tracklist_work_color + '][size=2][b]' + iter.discsubtitle + '[/b][/size]';
				duration = tracks.filter(it => it.discsubtitle == iter.discsubtitle)
				  .reduce((acc, it) => acc + it.duration, 0);
				if (duration > 0) playlist += ' [size=1][i][' + makeTimeString(duration) + '][/i][/size]';
				playlist += '[/color]';
			  }
			  lastSubtitle = iter.discsubtitle;
			}
			if (iter.classical_work != lastWork) {
			  if (iter.classical_work) {
				block2();
				playlist += '[color=' + prefs.tracklist_work_color + '][size=2][b]';
				if (release.composers.length != 1 && classicalWorks.get(iter.classical_work).composer) {
				  playlist += classicalWorks.get(iter.classical_work).composer + ': ';
				}
				playlist += iter.classical_work;
				playlist += '[/b]';
				if (classicalWorks.get(iter.classical_work).performer
					&& classicalWorks.get(iter.classical_work).performer != release.artist) {
				  playlist += ' (' + classicalWorks.get(iter.classical_work).performer + ')';
				}
				playlist += '[/size]';
				duration = tracks.filter(it => it.classical_work == iter.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();
			  }
			  lastWork = iter.classical_work;
			}
			if (vinyltrackParser.test(iter.tracknumber)) {
			  if (block == 3 && lastSide && RegExp.$1 != lastSide) playlist += '\n';
			  lastSide = RegExp.$1;
			}
			block3();
		  } // prologue
		} else { // single
		  playlist += '[align=center]';
		  playlist += isRED ? '[pad=20|20|20|20]' : '';
		  playlist += '[size=4][b][color=' + prefs.tracklist_artist_color + ']' + release.artist + '[/color]';
		  playlist += isRED ? '[hr]' : divs[0].repeat(32);
		  playlist += tracks[0].title + '[/b]';
		  if (tracks[0].composer) {
			playlist += '\n[i][color=' + prefs.tracklist_composer_color + '](' + tracks[0].composer + ')[/color][/i]';
		  }
		  playlist += '\n\n[color=' + prefs.tracklist_duration_color +'][' + makeTimeString(tracks[0].duration) + '][/color][/size]';
		  if (isRED) playlist += '[/pad]';
		  playlist += '[/align]';
		}
		return playlist;
	  }

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

	  function findPreviousUploads() {
		let search = new URLSearchParams(document.location.search);
		if (search.get('groupid')) GM_xmlhttpRequest({
		  method: 'GET',
		  url: document.location.origin + '/torrents.php?action=grouplog&groupid=' + search.get('groupid'),
		  responseType: 'document',
		  onload: function(response) {
			if (response.readyState != 4 || response.status != 200) return;
			var dom = domParser.parseFromString(response.responseText, "text/html");
			dom.querySelectorAll('table > tbody > tr.rowa').forEach(function(tr) {
			  if (/^\s*deleted\b/i.test(tr.children[3].textContent))
				scanLog('Torrent ' + tr.children[1].firstChild.textContent);
			});
		  },
		}); else {
		  let query = '';
		  if (!isVA && artists[0].length >= 1 && artists[0].length <= 3) query = artists[0].join(', ') + ' - ';
		  query += release.album;
		  scanLog(query);
		}

		function scanLog(query) {
		  GM_xmlhttpRequest({
			method: 'GET',
			url: document.location.origin + '/log.php?search=' + encodeURIComponent(query),
			responseType: 'document',
			onload: function (response) {
			  if (response.readyState != 4 || response.status != 200) return;
			  var dom = domParser.parseFromString(response.responseText, "text/html");
			  dom.querySelectorAll('table > tbody > tr.rowb').forEach(function(tr) {
				var size, msg = tr.children[1].textContent.trim();
				if (/\b[\d\s]+(?:\.\d+)?\s*(?:([KMGT])I?)?B\b/.test(msg)) size = get_size_from_string(RegExp.lastMatch);
				if (!msg.includes('deleted') || (/\[(.*)\/(.*)\/(.*)\]/.test(msg) ?
				   !release.codec || release.codec != RegExp.$1
				   //|| !release.encoding || release.encoding != RegExp.$2
				   || !media || media != RegExp.$3 :
				   !size || !albumSize || Math.abs(albumSize / size - 1) >= 0.1)) return;
				addMessage('Warning: possibly same release previously uploaded and deleted: ' + msg, 'ua-warning');
			  });
			},
		  });
		}

		function get_size_from_string(str) {
		  var matches = /\b([\d\s]+(?:\.\d+)?)\s*(?:([KMGT])I?)?B\b/.exec(str.replace(',', '.').toUpperCase());
		  if (!matches) return null;
		  var size = parseFloat(matches[1].replace(/\s+/g, ''));
		  if (matches[2] == 'K') { size *= Math.pow(1024, 1) }
		  else if (matches[2] == 'M') { size *= Math.pow(1024, 2) }
		  else if (matches[2] == 'G') { size *= Math.pow(1024, 3) }
		  else if (matches[2] == 'T') { size *= Math.pow(1024, 4) }
		  return Math.round(size);
		}
	  }

	  function getHomoIdentifier(id) {
		id = id.toUpperCase();
		return tracks.every(track => track.identifiers[id] && track.identifiers[id] == tracks[0].identifiers[id]) ?
		  tracks[0].identifiers[id] : null;
	  }

	  function barcode() {
		var r = getHomoIdentifier('BARCODE');
		return r ? r.replace(/\s+/g, '') : undefined;
	  }

	  function getStoreUrl() {
		for (var it of [
		  ['DISCOGS_ID', 'https://www.discogs.com/release/{ID}'],
		  ['ITUNES_ID', 'https://music.apple.com/album/{ID}'],
		  ['APPLE_ID', 'https://music.apple.com/album/{ID}'],
		  ['SPOTIFY_ID', 'https://open.spotify.com/album/{ID}'],
		  ['DEEZER_ID', 'https://www.deezer.com/album/{ID}'],
		  ['JUNODOWNLOAD_ID', 'https://www.junodownload.com/products/{ID}'],
		  ['PROSTUDIOMASTERS_ID', 'https://www.prostudiomasters.com/album/page/{ID}'],
		  ['GOOGLE_ID', 'https://play.google.com/store/music/album/?id={ID}'],
		  ['EONKYO_ID', 'https://www.e-onkyo.com/music/album/{ID}/'],
		  ['ACOUSTICSOUNDS_ID', 'https://store.acousticsounds.com/d/{ID}/'],
		  ['INDIESSCOPE_ID', 'https://www.indies.eu/alba/{ID}/'],
		  ['BEATPORT_ID', 'https://www.beatport.com/release/2/{ID}'],
		  ['TRAXSOURCE_ID', 'https://www.traxsource.com/title/{ID}/'],
		  ['MBR_ID', 'https://musicbrainz.org/release/{ID}'],
		]) {
		  let ID = getHomoIdentifier(it[0]);
		  if (ID) return it[1].replace('{ID}', ID);
		}
		return undefined;
	  }

	  function getCoverOnline() {
		if (i = getHomoIdentifier('APPLE_ID') || getHomoIdentifier('ITUNES_ID')
			|| /^https?:\/\/(?:\w+\.)*apple\.com\/\/.*\/(\d+)$/i.test(url) && RegExp.$1) {
		  queryItunesAPI('lookup', { id: i }).then(setItunesImage).catch(searchCoverOnline);
		} else if (i = getHomoIdentifier('DEEZER_ID')
			|| /^https:\/\/(?:\w+\.)*deezer\.com\/(\w+\/)*album\/(\d+)$/i.test(url) && RegExp.$1) {
		  queryDeezerAPI('album/' + i).then(setDeezerImage).catch(searchCoverOnline);
		} else if (prefs.discogs_key && prefs.discogs_secret
			&& (i = getHomoIdentifier('DISCOGS_ID') || dcRlsParser.test(url) && RegExp.$1)) {
		  queryDiscogsAPI('releases/' + i).then(function(release) {
			return release.images.length > 0 ? setCover(release.images[0].uri) : Promise.reject('no matches');
		  }).catch(searchCoverOnline);
		} else if (url) GM_xmlhttpRequest({
		  method: 'GET',
		  url: dcRlsParser.test(url) ? 'https://www.discogs.com/release/' + RegExp.$1 + '/images' : url,
		  onload: function(response) {
			if (response.readyState != 4 || response.status != 200) {
			  defaultErrorHandler(response);
			  searchCoverOnline();
			  return;
			}
			var ref, dom = domParser.parseFromString(response.responseText, 'text/html');
			function testDomain(url, selector) {
			  return typeof url == 'string' && response.finalUrl.toLowerCase().includes(url.toLowerCase()) ?
				dom.querySelector(selector) : null;
			}
			if ((ref = testDomain('qobuz.com', 'div.album-cover > img')) != null) {
			  testImageUrl(ref.src.replace(/_\d{3}(?=\.\w+$)/, '_max')).then(setCover)
				.catch(reason => setCover(ref.src)).catch(searchCoverOnline);
			} else if ((ref = testDomain('highresaudio.com', 'div.albumbody > img.cover[data-pin-media]')) != null) {
			  setCover(ref.dataset.pinMedia);
			} else if ((ref = testDomain('bandcamp.com', 'div#tralbumArt > a.popupImage')) != null) {
			  setCover(ref.href);
			} else if ((ref = testDomain('7digital.com', 'span.release-packshot-image > img[itemprop="image"]')) != null) {
			  setCover(ref.src);
			} else if ((ref = testDomain('hdtracks.', 'p.product-image > img')) != null) {
			  setCover(ref.src);
			} else if ((ref = testDomain('discogs.com', 'div#view_images > p:first-of-type > span > img')) != null) {
			  setCover(ref.src);
			} else if ((ref = testDomain('prestomusic.com', 'div.c-product-block__aside > a')) != null) {
			  setCover(ref.href.replace(/\?\d+$/, ''));
			} else if ((ref = testDomain('bontonland.cz', 'a.detailzoom')) != null) {
			  setCover(ref.href);
			} else if ((ref = testDomain('nativedsd.com', 'a#album-cover')) != null) {
			  setCover(ref.href);
			} else if ((ref = testDomain('prostudiomasters.com', 'img.album-art')) != null) {
			  setCover(ref.currentSrc || ref.src);
			} else if ((ref = testDomain('e-onkyo.com', 'figure > a.colorbox')) != null) {
			  setCover(new URL(response.finalUrl).origin + ref.pathname);
			} else if ((ref = testDomain('store.acousticsounds.com', 'div#detail > link[rel="image_src"]')) != null) {
			  setCover(ref.href.replace(/\/medium\//i, '/large/'));
			} else if ((ref = testDomain('indies.eu', 'div.obrazekDetail > img')) != null) {
			  setCover(ref.src);
			} else if ((ref = testDomain('beatport.com', 'div > img.interior-release-chart-artwork')) != null) {
			  setCover(ref.src);
			} else if ((ref = testDomain('supraphonline.cz', 'meta[itemprop="image"]')) != null) {
			  setCover(ref.content.replace(/\?.*$/, ''));
			} else if ((ref = dom.querySelector('meta[property="og:image"]')
				|| dom.querySelector('meta[itemprop="image"]')) != null && ref.content) {
			  setCover(ref.content);
			} else searchCoverOnline();
		  },
		  onerror: function(error) {
			defaultErrorHandler(error);
			searchCoverOnline();
		  },
		  onabort: abort => { defaultAbortHandler(abort, false) },
		  ontimeout: function(timeout) {
			defaultTimeoutHandler(timeout, false);
			searchCoverOnline();
		  },
		}); else searchCoverOnline();
	  }

	  function searchCoverOnline() {
		switch (typeof prefs.cover_lookup_provider == 'string' && prefs.cover_lookup_provider.toLowerCase()) {
		  case 'itunes':
			queryItunesAPI('search', {
			  country: 'US',
			  term: (isVA ? VA : release.artist) + ' ' + release.album,
			  media: 'music',
			  entity: 'album',
			}).then(setItunesImage);
			break;
		  case 'deezer':
			queryDeezerAPI('search', {
			  q: 'artist:"' + (isVA ? VA : release.artist) + '" album:"' + release.album + '"',
			  strict: 'on',
			  order: 'RANKING',
			}).then(setDeezerImage);
			break;
			/*case 'google': {
			  let query = new URLSearchParams({
				q: '"' + (isVA ? VA : release.artist) + '" "' + release.album + '"',
				c: 'music',
			  });
			  GM_xmlhttpRequest({
				method: 'GET',
				url: 'https://play.google.com/store/search?' + query,
				onload: function(response) {
				  if (response.readyState != 4 || response.status != 200) return;
				  var dom = domParser.parseFromString(response.responseText, 'text/html');
				},
				onerror: error => { console.error('GM_xmlhttpRequest: error') },
				onabort: abort => { console.error('XHR: abort') },
				ontimeout: timeout => { console.error('XHR: timeout') },
			  });
			  break;
			}*/
		  case 'musicbrainz': {
			let query = new URLSearchParams({
			  fmt: 'json',
			  query: 'release:"' + release.album + '" AND artist:"' + (isVA ? VA : release.artist) + '"',
			});
			GM_xmlhttpRequest({
			  method: 'GET',
			  url: 'https://musicbrainz.org/ws/2/release/?' + query,
			  responseType: 'json',
			  onload: function(response) {
				if (response.readyState != 4 || response.status != 200 || response.response.count <= 0) return
				var workers = response.response.releases.map(release => new Promise((resolve, reject) => GM_xmlhttpRequest({
				  method: 'GET',
				  url: 'https://coverartarchive.org/release/' + release.id,
				  responseType: 'json',
				  onload: function(response) {
					if (response.status == 404) resolve([]);
					else if (response.readyState != 4 || response.status != 200) reject(defaultErrorHandler(response));
					else resolve(response.response.images.filter(image => image.front).map(image => image.image));
				  },
				  onerror: error => { reject(defaultErrorHandler(error)) },
				  onabort: abort => { reject(defaultAbortHandler(abort)) },
				  ontimeout: timeout => { reject(defaultTimeoutHandler(timeout)) },
				})));
				Promise.all(workers).then(releases => { outerLoop: for (var release of releases) {
				  if (release.length <= 0) continue;
				  setCover(release[0]);
				  break outerLoop;
				}});
			  },
			  onerror: error => { defaultErrorHandler(error, true) },
			  onabort: abort => { defaultAbortHandler(abort, true) },
			  ontimeout: timeout => { defaultTimeoutHandler(timeout, true) },
			});
			break;
		  }
		  case 'lastfm':
			queryLastFmAPI('album.getinfo', {
			  artist: (isVA ? VA : release.artist),
			  album: release.album,
			}).then(function(result) {
			  if (result.error) return Promise.reject(result.message);
			  var r = result.album.image.filter(image => image.size == /*'extralarge'*/'mega');
			  if (r.length <= 0) return;
			  r = r[0]['#text'];
			  if (r) testImageUrl(r.replace(/\/\d+x\d+\//, '/')).then(setCover).catch(reason => setCover(r));
			});
			break;
		  case 'qobuz': {
			let query = new URLSearchParams({
			  q: (isVA ? VA : release.artist) + release.album,
			  i: 'boutique',
			});
			GM_xmlhttpRequest({
			  method: 'GET',
			  url: 'https://www.qobuz.com/search?' + query,
			  onload: function(response) {
				if (response.readyState != 4 || response.status != 200) return;
				var dom = domParser.parseFromString(response.responseText, 'text/html');
				var results = dom.querySelectorAll('div.search-results > div.product');
				if (results.length <= 0) return;
				var img = results[0].querySelector('div.album-cover > a > img');
				if (img != null) testImageUrl((img.dataset.src || img.src).replace(/_\d+(?=\.\w+$)/, '_max'))
				  .then(setCover).catch(reason => setCover(img.dataset.src || img.src));
			  },
			  onerror: error => { console.error('GM_xmlhttpRequest: error') },
			  onabort: abort => { console.error('XHR: abort') },
			  ontimeout: timeout => { console.error('XHR: timeout') },
			});
			break;
		  }
		}
	  }

	  function setItunesImage(result) {
		return result.resultCount > 0 ?
		  setCover(result.results[0].artworkUrl100.replace('100x100bb', '100000x100000-999'))
			: Promise.reject('no results');
	  }
	  function setDeezerImage(result) {
		return result.total > 0 ?
		  setCover(result.data[0].album.cover_xl.replace('1000x1000-000000-80-0-0', '1400x1400-000000-100-0-0'))
			: Promise.reject('no results');
	  }

	  function onlineCheck(onlineTracks) {
		if (!Array.isArray(onlineTracks) || onlineTracks.length <= 0) return Promise.reject('No tracklist');
		if (tracks.length != onlineTracks.length) {
		  addMessage(new HTML('Warning: online album different tracklist length (' + tracks.length.toString().bold() +
			' ≠ ' + onlineTracks.length.toString().bold() + ')'), 'ua-warning');
		}
		if (totalTime > 0) {
		  let ttOnline = onlineTracks.reduce((acc, track) => acc + (track.duration || NaN), 0);
		  if (ttOnline > 0 && Math.abs(totalTime - ttOnline) * 100 / ttOnline > 0.75) {
			addMessage(new HTML('Warning: online album duration mismatch (' + makeTimeString(totalTime).bold() +
				' ≠ ' + makeTimeString(ttOnline).bold() + ')'), 'ua-warning');
		  }
		}
		if (release.artist.toLowerCase() != onlineTracks[0].artist.toLowerCase()
			&& onlineTracks.map(track => track.artist).homogeneous()) {
		  addMessage(new HTML('Notice: online album main artist mismatch ("' +
			release.artist.bold() + '" ≠ "' + onlineTracks[0].artist.bold() + '")'), 'ua-notice');
		}
		if (release.album.toLowerCase() != onlineTracks[0].album.toLowerCase()
			&& onlineTracks.map(track => track.album).homogeneous()) {
		  addMessage(new HTML('Notice: online album title mismatch ("' +
			release.album.bold() + '" ≠ "' + onlineTracks[0].album.bold() + '")'), 'ua-notice');
		}
		if (onlineTracks[0].label && onlineTracks.map(track => track.label).homogeneous()
			&& release.label.toASCII().toLowerCase().replace(/-/g, '/') != onlineTracks[0].label.toASCII().toLowerCase().replace(/-/g, '/')) {
		  addMessage(new HTML('Notice: online album label mismatch ("' +
			release.label.bold() + '" ≠ "' + onlineTracks[0].label.bold() + '")'), 'ua-notice');
		}
		if (onlineTracks[0].album_year && onlineTracks.map(track => track.album_year).homogeneous()
			&& release.album_year != onlineTracks[0].album_year) {
		  addMessage(new HTML('Warning: online album year mismatch (' +
			release.album_year.toString().bold() + ' ≠ ' + onlineTracks[0].album_year.toString().bold() + ')'), 'ua-warning');
		}
		if (onlineTracks[0].release_date && onlineTracks.map(track => track.release_date).homogeneous()
			&& new Date(release.release_date.toString()).getDateValue()
				!= new Date(onlineTracks[0].release_date.toString()).getDateValue()) {
		  addMessage(new HTML('Notice: online album release date mismatch (' +
			release.release_date.toString().bold() + ' ≠ ' + onlineTracks[0].release_date.toString().bold() + ')'), 'ua-notice');
		}
		if (tracks.length == onlineTracks.length) for (let ndx = 0; ndx < tracks.length; ++ndx) {
		  if (tracks[ndx].duration && onlineTracks[ndx].duration
			  && Math.abs(tracks[ndx].duration - onlineTracks[ndx].duration) >= 2) {
			addMessage('Warning: online track #' + (ndx + 1) + ' duration mismatch (' +
				makeTimeString(tracks[ndx].duration) + ' ≠ ' + makeTimeString(onlineTracks[ndx].duration) +
					')', 'ua-warning');
		  }
		  if (tracks[ndx].title.toLowerCase() != onlineTracks[ndx].title.toLowerCase()) {
			addMessage('Notice: online track #' + (ndx + 1) + ' title mismatch ("' +
				tracks[ndx].title + '" ≠ "' + onlineTracks[ndx].title + '")', 'ua-notice');
		  }
		  if (tracks[ndx].tracknumber != onlineTracks[ndx].tracknumber) {
			addMessage('Warning: online track #' + (ndx + 1) + ' track number mismatch (' +
				tracks[ndx].tracknumber + ' ≠ ' + onlineTracks[ndx].tracknumber + ')', 'ua-warning');
		  }
		  if (onlineTracks[ndx].discnumber && (onlineTracks[ndx].discnumber > 1 || tracks[ndx].discnumber)
			  && tracks[ndx].discnumber != onlineTracks[ndx].discnumber) {
			addMessage('Warning: online track #' + (ndx + 1) + ' disc number mismatch (' +
				tracks[ndx].discnumber + ' ≠ ' + onlineTracks[ndx].discnumber + ')', 'ua-warning');
		  }
		  if (tracks[ndx].track_artist && onlineTracks[ndx].track_artist
			  && tracks[ndx].track_artist.toLowerCase() != onlineTracks[ndx].track_artist.toLowerCase()) {
			addMessage('Notice: online track #' + (ndx + 1) + ' track artist mismatch ("' +
				tracks[ndx].track_artist + '" ≠ "' + onlineTracks[ndx].track_artist + '")', 'ua-notice');
		  }
		  if (tracks[ndx].discsubtitle && onlineTracks[ndx].discsubtitle
			  && tracks[ndx].discsubtitle.toLowerCase() != onlineTracks[ndx].discsubtitle.toLowerCase()) {
			addMessage('Notice: online track #' + (ndx + 1) + ' disc subtitle mismatch ("' +
				tracks[ndx].discsubtitle + '" ≠ "' + onlineTracks[ndx].discsubtitle + '")', 'ua-notice');
		  }
		}
	  }

	  function lookupOnlineSource() {
		var albumTitle = release.artist && release.album;
		var barCode = barcode();
		return (albumTitle && (!media || ['CD', 'WEB'].includes(media)) ? querySpotifyAPI('search', {
		  q: 'artist:"' + release.artist + '" album:"' + release.album + '"',
		  type: 'album',
		  limit: 50,
		}).then(function(result) {
		  if (result.albums.total <= 0) return Promise.reject('No matches');
		  var f = tryArtist(joinArtists, true);
		  if (f.length == 1) { info(); return Promise.resolve(f[0].href) }
		  if (f.length > 1) return Promise.reject('Ambiguity');
		  f = tryArtist(arr => arr.join(', '), true);
		  if (f.length == 1) { info(); return Promise.resolve(f[0].href) }
		  return Promise.reject('No exact matches');

		  function tryArtist(joinFunc, caseless) {
			var album2 = caseless ? release.album.toLowerCase() : release.album;
			var artist2 = caseless ? release.artist.toLowerCase() : release.artist;
			return result.albums.items.filter(function(album) {
			  var artist1 = joinFunc(album.artists.map(artist => artist.name));
			  return (caseless ? album.name.toLowerCase() : album.name) == album2
				&& (caseless ? artist1.toLowerCase() : artist1) == artist2
				&& (release.release_type == getReleaseIndex('Single') ?
					album.album_type == 'single' : album.album_type != 'single');
			})
		  }
		  function info() {
			addMessage(new HTML('Info: found album on Spotify with ID <a style="color: #00f3ff;" target="_blank" href="' +
				f[0].external_urls.spotify + '">' + f[0].id + '</a>'), 'ua-info');
		  }
		}) : Promise.reject('Insufficient information')).catch(reason => albumTitle && (!media || ['CD', 'WEB'].includes(media))
			&& (!release.totaldiscs || release.totaldiscs < 2) ? queryDeezerAPI('search', {
		  q: 'artist:"' + release.artist + '" album:"' + release.album + '"',
		  strict: 'on',
		  order: 'RANKING',
		}).then(function(result) {
		  if (result.total <= 0) return Promise.reject('No matches');
		  var f = filter(true);
		  if (f.length == 1) {
			addMessage(new HTML('Info: found album on Deezer with ID <a style="color: #00f3ff;" target="_blank" href="' +
				'https://www.deezer.com/album/' + f[0].id + '">' + f[0].id + '</a>'), 'ua-info');
			return Promise.resolve('https://api.deezer.com/album/' + f[0].id);
		  }
		  if (f.length > 1) return Promise.reject('Ambiguity');
		  return Promise.reject('No exact matches');

		  function filter(caseless) {
			var album2 = caseless ? release.album.toLowerCase() : release.album;
			var artist2 = caseless ? release.artist.toLowerCase() : release.artist;
			var albums = new Map();
			result.data.forEach(function(match) {
			  if ((caseless ? match.album.title.toLowerCase() : match.album.title) != album2
				|| (caseless ? match.artist.name.toLowerCase() : match.artist.name) != artist2) return;
			  if (!albums.has(match.album.id)) albums.set(match.album.id, match.album);
			});
			return Array.from(albums.values());
		  }
		}) : Promise.reject('Insufficient information')).catch(reason => albumTitle && (!media || ['CD', 'WEB'].includes(media))
			&& (!release.totaldiscs || release.totaldiscs < 2) ? queryLastFmAPI('album.getinfo', {
		  artist: (isVA ? VA : release.artist),
		  album: release.album,
		}).then(function(result) {
		  if (result.error) return Promise.reject(result.message)
		  addMessage(new HTML('Info: found album on Last.fm with MBID <a style="color: #00f3ff;" target="_blank" href="' +
			result.album.url + '">' + (result.album.mbid || '#N/A') + '</a>'), 'ua-info');
		  return Promise.resolve(result.album);
		}) : Promise.reject('Insufficient information')).catch(function(e) {
		  if (!albumTitle && !barCode || !media) return Promise.reject('Insufficient information');
		  var query = { type: 'release' };
		  if (barCode) query.barcode = barCode; else {
			query.artist = '"' + release.artist + '"';
			query.release_title = '"' + release.album + '"';
			//if (release.catalogs.length > 0) query.catno = release.catalogs.join('; ');
		  }
		  return queryDiscogsAPI('database/search', query).then(function(result) {
			if (result.results.length <= 0) return Promise.reject('No matches');
			var f = filter(true);
			if (f.length == 1) { info(); return Promise.resolve(f[0].resource_url) }
			if (f.length > 1) return Promise.reject('Ambiguity');
			return Promise.reject('No exact matches');

			function filter(caseless) {
			  var title2 = caseless ? release.artist.toLowerCase() + ' - ' + release.album.toLowerCase()
			  	: release.artist + ' - ' + release.album;
			  return result.results.filter(function(album) {
				return (caseless ? album.title.toLowerCase() : album.title).replace(/\s+\(\d+\)(?= - )/, '') == title2
					&& (!Array.isArray(album.format) || album.format.some(format => dcFmtToGazelle(format) === media));
			  })
			}
			function info() {
			  addMessage(new HTML('Info: found album on Discogs with ID <a style="color: #00f3ff;" target="_blank" href="' +
				'https://www.discogs.com' + f[0].uri + '">' + f[0].id + '</a>'), 'ua-info');
			}
		  });
		});
	  }

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

	  function trackComparer(a, b) {
		var cmp;
		if (release.totaldiscs > 1) {
		  cmp = a.discnumber - b.discnumber;
		  if (!isNaN(cmp) && cmp != 0) return cmp;
		} else {
		  cmp = (a.discsubtitle || '').localeCompare(b.discsubtitle || '');
		  //if (cmp != 0) return cmp;
		}
		cmp = parseInt(a.tracknumber) - parseInt(b.tracknumber);
		if (!isNaN(cmp)) return cmp;
		var m1 = vinyltrackParser.exec(a.tracknumber.toUpperCase());
		var m2 = vinyltrackParser.exec(b.tracknumber.toUpperCase());
		return m1 != null && m2 != null ?
		  m1[1].localeCompare(m2[1]) || parseFloat(m1[2]) - parseFloat(m2[2]) :
		a.tracknumber.toUpperCase().localeCompare(b.tracknumber.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) {
		vals.forEach(function(val) {
		  var ndx = 10;
		  [
			192, 'APS (VBR)', 'V2 (VBR)', 'V1 (VBR)', 256, 'APX (VBR)',
			'V0 (VBR)', 320, 'Lossless', '24bit Lossless', 'Other',
		  ].forEach(function(it, _ndx) {
			if ((typeof val == 'string' ? val.toLowerCase() : val)
				== (typeof it == 'string' ? it.toLowerCase() : it)) ndx = _ndx;
		  });
		  if ((ref = document.getElementById('bitrate_' + ndx)) != null) {
			ref.checked = true;
			ref.onchange();
		  }
		});
	  }

	  function reqSelectMedias(...vals) {
		vals.forEach(function(val) {
		  ['CD', 'DVD', 'Vinyl', 'Soundboard', 'SACD', 'DAT', 'Cassette', 'WEB', 'Blu-Ray'].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 getReleaseIndex(str) {
		var ndx;
		[
		  ['Album', 1],
		  ['Soundtrack', 3],
		  ['EP', 5],
		  ['Anthology', 6],
		  ['Compilation', 7],
		  ['Single', 9],
		  ['Live album', 11],
		  ['Remix', 13],
		  ['Bootleg', 14],
		  ['Interview', 15],
		  ['Mixtape', 16],
		  ['Demo', 17],
		  ['Concert Recording', 18],
		  ['DJ Mix', 19],
		  ['Unknown', 21],
		].forEach(k => { if (str.toLowerCase() == k[0].toLowerCase()) ndx = k[1] });
		return ndx || 21;
	  }

	  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';
	  }
	} // parseTracks

	function fetchOnline_Music(url, weak = false) {
	  if (!urlParser.test(url)) return Promise.reject('Invalid URL');
	  const discParser = /^(?:CD|DIS[CK]\s+|VOLUME\s+|DISCO\s+|DISQUE\s+)(\d+)(?:\s+of\s+(\d+))?$/i;
	  var ref, dom, artist, album, albumYear, releaseDate, channels, label, composer, bd, sr = 44.1,
		  description, compiler, producer, totalTracks, discSubtitle, discNumber, trackNumber, totalDiscs,
		  title, trackArtist, catalogue, encoding, format, bitrate, duration, country, media = 'WEB', imgUrl,
		  genres = [], trs, tracks = [], identifiers = {}, trackIdentifiers = {};
	  if (url.toLowerCase().includes('qobuz.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  const error = new Error('Failed to parse Qobus release page');
		  var mainArtist;
		  if ((ref = dom.querySelector('div.album-meta > h2.album-meta__artist')) == null) throw error;
		  artist = ref.title || ref.textContent.trim();
		  if ((ref = dom.querySelector('div.album-meta > h1.album-meta__title')) == null) throw error;
		  album = ref.title || ref.textContent.trim();
		  ref = dom.querySelector('div.album-meta > ul > li:first-of-type');
		  if (ref != null) releaseDate = normalizeDate(ref.textContent);
		  ref = dom.querySelector('div.album-meta > ul > li:nth-of-type(2) > a');
		  if (ref != null) mainArtist = ref.title || ref.textContent.trim();
		  ref = dom.querySelector('p.album-about__copyright');
		  if (ref != null) albumYear = extractYear(ref.textContent);
		  dom.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.children[0].textContent.trim()
			else if (['Composer', 'Compositeur', 'Komponist', 'Compositore', 'Compositor'].some(matchLabel)) {
			  composer = it.children[0].textContent.trim();
			  if (pseudoArtistParsers.some(rx => rx.test(composer))) composer = undefined;
			} else if (['Genre', 'Genere', 'Género'].some(g => it.textContent.startsWith(g)) && it.children.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();
			}
		  });
  		  bd = 16; channels = 2; // defaults to CD quality
		  dom.querySelectorAll('span.album-quality__info').forEach(function(k) {
			if (/\b([\d\.\,]+)\s*kHz\b/i.test(k.textContent) != null) sr = parseFloat(RegExp.$1.replace(',', '.'));
			if (/\b(\d+)[\-\s]*Bits?\b/i.test(k.textContent) != null) bd = parseInt(RegExp.$1);
			if (/\b(?:Stereo)\b/i.test(k.textContent)) channels = 2;
			if (/\b(\d)\.(\d)\b/.test(k.textContent)) channels = parseInt(RegExp.$1) + parseInt(RegExp.$2);
		  });
		  getDescFromNode('section#description > p', response.finalUrl, true);
		  if ((ref = dom.querySelector('a[title="Qobuzissime"]')) != null) {
			if (description) description += '\n';
			description += '[align=center][url=https://www.qobuz.com' + ref.pathname +
			  '][img]https://ptpimg.me/4z35uj.png[/img][/url][/align]';
		  }
		  if ((ref = dom.querySelector('div.album-cover > img')) != null) {
			imgUrl = ref.src.replace(/_\d{3}(?=\.\w+$)/, '_max');
		  }
		  trs = dom.querySelectorAll('div.player__item > div.player__tracks > div.track > div.track__items');
		  if (!totalTracks) totalTracks = trs.length;
		  resolve(Array.from(trs).map(function(tr) {
			discSubtitle = discNumber = undefined;
			trackIdentifiers = { TRACK_ID: tr.parentNode.dataset.track };
			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) trackIdentifiers.RELEASETYPE = gtm.product.type;
			  if (gtm.product.subCategory) var subCategory = [gtm.product.subCategory];
			} catch(e) { console.warn(e) }
			if ((ref = tr.parentNode.parentNode.parentNode.querySelector('p.player__work:first-child')) != null) {
			  discSubtitle = ref.textContent.trim();
			  guessDiscNumber();
			}
			return {
			  artist: artist,
			  album: album,
			  album_year: albumYear,
			  release_date: releaseDate,
			  label: label,
			  encoding: 'lossless',
			  codec: 'FLAC',
			  bd: bd || undefined,
			  sr: sr * 1000 || undefined,
			  channels: channels || undefined,
			  media: media,
			  genre: genres.join('; '),
			  discnumber: discNumber,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle,
			  tracknumber: parseInt(tr.querySelector('span[itemprop="position"]').textContent),
			  totaltracks: totalTracks,
			  title: tr.querySelector('span.track__item--name').textContent.trim().replace(/\s+/g, ' '),
			  composer: composer,
			  duration: timeStringToTime(tr.querySelector('span.track__item--duration').textContent),
			  url: response.finalUrl,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('highresaudio.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  if ((ref = dom.querySelector('h1 > span.artist')) != null) artist = ref.textContent.trim();
		  if ((ref = dom.getElementById('h1-album-title')) != null) album = ref.firstChild.textContent.trim();
		  dom.querySelectorAll('div.album-col-info-data > div > p').forEach(function(k) {
			if (/\b(?:Genre|Subgenre)\b/i.test(k.firstChild.textContent)) genres.push(k.lastChild.textContent.trim());
			if (/\b(?:Label)\b/i.test(k.firstChild.textContent)) label = k.lastChild.textContent.trim();
			if (/\b(?:Album[\s\-]Release)\b/i.test(k.firstChild.textContent)) {
			  albumYear = extractYear(k.lastChild.textContent);
			}
			if (/\b(?:HRA[\s\-]Release)\b/i.test(k.firstChild.textContent)) {
			  releaseDate = normalizeDate(k.lastChild.textContent);
			}
		  });
		  i = 0;
		  dom.querySelectorAll('tbody > tr > td.col-format').forEach(function(format) {
			if (!/^(FLAC)\s*(\d+(?:[\.\,]\d+)?)\b/.test(format.textContent)) return;
			format = RegExp.$1;
			sr = parseFloat(RegExp.$2.replace(',', '.'));
			++i;
		  });
		  if (i > 1) sr = undefined; // ambiguous
		  getDescFromNode('div#albumtab-info > p', response.finalUrl);
		  if ((ref = dom.querySelector('div.albumbody > img.cover[data-pin-media]')) != null) imgUrl = ref.dataset.pinMedia;
		  trs = dom.querySelectorAll('ul.playlist > li.pltrack');
		  resolve(Array.from(trs).map(function(tr) {
			discNumber = undefined; discSubtitle = tr;
			while ((discSubtitle = discSubtitle.previousElementSibling) != null) {
			  if (discSubtitle.nodeName == 'LI' && discSubtitle.className == 'plinfo') {
				discSubtitle = discSubtitle.textContent.replace(/\s*:$/, '').trim();
				guessDiscNumber();
				break;
			  }
			}
			return {
			  artist: artist,
			  album: album,
			  album_year: albumYear,
			  release_date: releaseDate,
			  label: label,
			  encoding: 'lossless',
			  codec: 'FLAC',
			  bd: 24,
			  sr: sr * 1000,
			  media: media,
			  genre: genres.join('; '),
			  discnumber: discNumber,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle || undefined,
			  tracknumber: parseInt(tr.querySelector('span.track').textContent),
			  totaltracks: trs.length,
			  title: tr.querySelector('span.title').textContent.trim().replace(/\s+/g, ' '),
			  duration: timeStringToTime(tr.querySelector('span.time').textContent),
			  url: response.finalUrl,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('bandcamp.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  if ((ref = dom.querySelector('span[itemprop="byArtist"] > a')) != null) artist = ref.textContent.trim();
		  if ((ref = dom.querySelector('h2[itemprop="name"]')) != null) album = ref.textContent.trim();
		  ref = dom.querySelector('div.tralbum-credits');
		  if (ref != null && /\breleased\s+(.*?\b\d{4})\b/i.test(ref.textContent)) releaseDate = RegExp.$1;
		  ref = dom.querySelector('span.back-link-text > br');
		  if (ref != null && ref.nextSibling != null) label = ref.nextSibling.textContent.trim(); else {
			ref = dom.querySelector('p#band-name-location > span.title');
			if (ref != null) label = ref.textContent.trim();
		  }
		  let tags = new TagManager;
		  dom.querySelectorAll('div.tralbum-tags > a.tag').forEach(function(tag) {
			if ([
			  artist,
			].every(t => tag.textContent.trim().toLowerCase() != t.toLowerCase())) tags.add(tag.textContent.trim());
		  });
		  description = [];
		  dom.querySelectorAll('div.tralbumData').forEach(function(div) {
			if (!div.classList.contains('tralbum-tags')) description.push(html2php(div, response.finalUrl).trim());
		  });
		  description = description.filter(p => p).join('\n\n');
		  if ((ref = dom.querySelector('div#tralbumArt > a.popupImage')) != null) imgUrl = ref.href;
		  trs = dom.querySelectorAll('table.track_list > tbody > tr[itemprop="tracks"]');
		  resolve(Array.from(trs).map(tr => ({
			artist: artist,
			album: album,
			//album_year: extractYear(releaseDate),
			release_date: releaseDate,
			label: label,
			media: media,
			genre: tags.toString(),
			discnumber: discNumber,
			totaldiscs: totalDiscs,
			tracknumber: parseInt(tr.querySelector('div.track_number').textContent),
			totaltracks: trs.length,
			title: (tr.querySelector('div.title span.track-title')
			  || tr.querySelector('div.title span[itemprop="name"]')).textContent.trim().replace(/\s+/g, ' '),
			duration: (ref = tr.querySelector('span.time')) != null && timeStringToTime(ref.textContent) || undefined,
			url: response.finalUrl,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  })));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('prestomusic.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  artist = getArtists(dom.querySelectorAll('div.c-product-block__contributors > p'));
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  ref = dom.querySelector('h1.c-product-block__title');
		  if (ref != null) album = ref.lastChild.textContent.trim();
		  dom.querySelectorAll('div.c-product-block__metadata > ul > li').forEach(function(li) {
			if (li.firstChild.textContent.includes('Release Date')) {
			  releaseDate = extractYear(li.lastChild.textContent);
			} else if (li.firstChild.textContent.includes('Label')) {
			  label = li.lastChild.textContent.trim();
			} else if (li.firstChild.textContent.includes('Catalogue No')) {
			  catalogue = li.lastChild.textContent.trim();
			}
		  });
		  composer = [];
		  dom.querySelectorAll('div#related > div > ul > li').forEach(function(li) {
			if (li.parentNode.previousElementSibling.textContent.includes('Composers')) {
			  composer.push(li.firstChild.textContent.trim().replace(/^(.*?)\s*,\s+(.*)$/, '$2 $1'));
			}
		  });
		  composer = composer.join(', ') || undefined;
		  genres = undefined;
		  if (/\/jazz\//i.test(response.finalUrl)) genres = 'Jazz';
		  if (/\/classical\//i.test(response.finalUrl)) genres = 'Classical';
		  getDescFromNode('div#about > div > p', response.finalUrl, true);
		  if ((ref = dom.querySelector('div.c-product-block__aside > a')) != null) imgUrl = ref.href.replace(/\?\d+$/, '');
		  trs = dom.querySelectorAll('div.has--sample');
		  trackNumber = 0;
		  resolve(Array.from(trs).map(function(tr) {
			discNumber = discSubtitle = undefined;
			var parent = tr;
			if (tr.classList.contains('c-track')) {
			  parent = tr.parentNode.parentNode;
			  if (parent.classList.contains('c-expander')) parent = parent.parentNode;
			  if ((ref = parent.querySelector(':scope > div > div > div > p.c-track__title')) != null) {
				discSubtitle = ref.textContent.trim().replace(/\s+/g, ' ');
				guessDiscNumber();
			  }
			}
			trackArtist = getArtists(parent.querySelectorAll(':scope > div.c-track__details > ul > li'));
			if (trackArtist.equalTo(artist)) trackArtist = [];
			return {
			  artist: isVA ? VA : artist.join('; '),
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: 'WEB',
			  genre: genres,
			  discnumber: discNumber,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle,
			  tracknumber: ++trackNumber,
			  totaltracks: trs.length,
			  title: (ref = tr.querySelector('p.c-track__title')) ? ref.textContent.trim().replace(/\s+/g, ' ') : undefined,
			  track_artist: joinArtists(trackArtist),
			  composer: composer,
			  duration: timeStringToTime(tr.querySelector('div.c-track__duration').textContent),
			  url: response.finalUrl,
			  description: description,
			  identifiers: mergeIds(),
			};
		  }));

		  function getArtists(nodeList) {
			var artists = [];
			nodeList.forEach(function(_artists) {
			  _artists = _artists.textContent.trim();
			  if (_artists.startsWith('Record')) return;
			  splitArtists(_artists).forEach(artist => { artists.push(artist.replace(/\s*\([^\(\)]*\)$/, '')) });
			});
			return artists.filter(artist => artist.length > 0);
		  }
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('discogs.com/') && /\/releases?\/(\d+)\b/i.test(url)) {
		return queryDiscogsAPI('releases/' + RegExp.$1).then(function(release) {
		  const removeArtistNdx = /\s*\(\d+\)$/;
		  const editionTest = /^(?:.+?\s+Edition|Remaster(?:ed)|Remasterizado|Remasterisée|Reissue|.+?\s+Release|Enhanced|Promo)$/;
		  media = undefined;
		  identifiers.DISCOGS_ID = release.id;
		  var master = release.master_url ? new Promise((resolve, reject) => GM_xmlhttpRequest({
			method: 'GET',
			url: release.master_url,
			responseType: 'json',
			onload: function(response) {
			  if (response.readyState == 4 && response.status == 200) resolve(response.response);
			  	else reject(defaultErrorHandler(response));
			},
		  })) : Promise.reject('master release not available');
		  var albumArtists = getArtists(release);
		  if (albumArtists[0].length > 0) {
			artist = albumArtists[0].join('; ');
			if (albumArtists[1].length > 0) artist += ' feat. ' + albumArtists[1].join('; ');
		  }
		  album = release.title;
		  var editions = [];
		  label = []; catalogue = [];
		  release.labels.forEach(function(it) {
			//if (it.entity_type_name != 'Label') return;
			if (!/^Not On Label\b/i.test(it.name)) label.pushUniqueCaseless(it.name.replace(removeArtistNdx, ''));
			catalogue.pushUniqueCaseless(it.catno);
		  });
		  description = '';
		  if (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=https://www.discogs.com/label/' + it.id + ']' +
					  it.name.replace(removeArtistNdx, '') + '[/url]';
				  if (it.catno) result += ' – ' + it.catno;
				  return result;
				})
				.join(', ');
			});
		  }
		  if (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=https://www.discogs.com/artist/' + artist.id + ']' +
					  (artist.anv || artist.name).replace(removeArtistNdx, '') + '[/url]';
				  if (artist.tracks) result += ' (tracks: ' + artist.tracks + ')';
				  return result;
				})
				.join(', ');
			});
		  }
		  if (release.notes) {
			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'],
			['EP', 'EP'],
			['Compilation', 'Compilation'],
			['Soundtrack', 'Soundtrack'],
		  ].forEach(function(k) {
			if (release.formats.every(it => Array.isArray(it.descriptions) && it.descriptions.includesCaseless(k[0]))) {
			  identifiers.RELEASETYPE = k[1];
			}
		  });
		  release.identifiers.forEach(function(id) {
			identifiers[id.type.toUpperCase().replace(/\s*\/\s*/g, '-').replace(/\W/g, '_')] = id.value;
		  });
		  if (identifiers.BARCODE) identifiers.BARCODE = identifiers.BARCODE;
		  release.formats.forEach(function(fmt) {
			if (editionTest.test(fmt.text)) editions.push(fmt.text);
			if (Array.isArray(fmt.descriptions)) fmt.descriptions.forEach(function(desc) {
			  if (editionTest.test(desc)) editions.push(desc);
			});
			if (media) return;
			if (/\bFile\b/.test(fmt.name)) {
			  media = 'WEB';
			  if (['FLAC', 'WAV', 'AIF', 'AIFF', 'AIFC', 'PCM', 'ALAC', 'APE', 'WavPack']
				  .some(k => fmt.descriptions.includes(k))) {
				encoding = 'lossless'; format = 'FLAC';
			  } else if (fmt.descriptions.includes('AAC')) {
				encoding = 'lossy'; format = 'AAC'; bd = undefined;
				if (/(\d+)\s*kbps\b/i.test(fmt.text)) bitrate = parseInt(RegExp.$1);
			  } else if (fmt.descriptions.includes('MP3')) {
				encoding = 'lossy'; format = 'MP3'; bd = undefined;
				if (/\b(\d+)\s*kbps\b/i.test(fmt.text)) bitrate = parseInt(RegExp.$1);
			  } else if (['DFF', 'DSD'].some(k => fmt.descriptions.includes(k))) {
				encoding = 'lossless';
			  } else if (['AMR', 'MP2', 'ogg-vorbis', 'Opus', 'SHN', 'WMA'].some(k => fmt.descriptions.includes(k))) {
				encoding = 'lossy';
			  }
			} else media = dcFmtToGazelle(fmt.name) || undefined;
		  });
		  if (editions.length > 0) album += ' (' + editions.join(' / ') + ')';
		  if (Array.isArray(release.images) && release.images[0] && release.images[0].resource_url/*uri*/) {
			imgUrl = release.images[0].resource_url/*uri*/;
		  }
		  totalTracks = release.tracklist.filter(track => track.type_.toLowerCase() == 'track').length;
		  return master.then(enumTracks, function(e) {
			addMessage('Notice: ' + e, 'ua-notice');
			return enumTracks({});
		  });

		  function getArtists(root) {
			function filterArtists(rx, anv = true) {
			  return Array.isArray(root.extraartists) && rx instanceof RegExp ?
				root.extraartists.filter(it => rx.test(it.role))
				  .map(it => (anv && it.anv || it.name || '').replace(removeArtistNdx, '')) : [];
			}
			var artists = [];
			for (var ndx = 0; ndx < 7; ++ndx) artists[ndx] = [];
			ndx = 0;
			if (root.artists) root.artists.forEach(function(it) {
			  artists[ndx].push((it.anv || it.name).replace(removeArtistNdx, ''));
			  if (/^feat/i.test(it.join)) ndx = 1;
			});
			return [
			  artists[0],
			  artists[1].concat(filterArtists(/^(?:featuring)$/i)),
			  artists[2].concat(filterArtists(/\b(?:Remixed[\s\-]By|Remixer)\b/i)),
			  artists[3].concat(filterArtists(/\b(?:(?:Written|Composed)[\s\-]By|Composer)\b/i, false)),
			  artists[4].concat(filterArtists(/\b(?:Conducted[\s\-]By|Conductor)\b/i)),
			  artists[5].concat(filterArtists(/\b(?:Compiled[\s\-]By|Compiler)\b/i)),
			  artists[6].concat(filterArtists(/\b(?:Produced[\s\-]By|Producer)\b/i)),
			  // filter off from performers
			  filterArtists(/\b(?:(?:Mixed)[\s\-]By|Mixer)\b/i),
			  filterArtists(/\b(?:(?:Written|Composed)[\s\-]By|Composer)\b/i, true),
			];
		  }

		  function enumTracks(master) {
			var tags = new TagManager();
			if (release.genres) tags.add(...release.genres);
			if (release.styles) tags.add(...release.styles);
			if (master.genres) tags.add(...master.genres);
			if (master.styles) tags.add(...master.styles);
			release.tracklist.forEach(function(track) {
			  switch (track.type_.toLowerCase()) {
				case 'heading':
				  discSubtitle = track.title;
				  break;
				case 'track': {
				  trackIdentifiers = {};
				  if (/^([a-zA-Z]+)?(\d+)-(\w+)$/.test(track.position)) {
					if (RegExp.$1) trackIdentifiers.VOL_MEDIA = RegExp.$1;
					discNumber = RegExp.$2;
					trackNumber = RegExp.$3;
				  } else {
					discNumber = undefined;
					trackNumber = track.position;
				  }
				  let trackArtists = getArtists(track);
				  if (trackArtists[0].length > 0 && !trackArtists[0].equalTo(albumArtists[0])
					  || trackArtists[1].length > 0 && !trackArtists[1].equalTo(albumArtists[1])) {
					trackArtist = (trackArtists[0].length > 0 ? trackArtists : albumArtists)[0].join('; ');
					if (trackArtists[1].length > 0) trackArtist += ' feat. ' + trackArtists[1].join('; ');
				  } else trackArtist = null;
				  let performer = Array.isArray(track.extraartists) && track.extraartists
					.map(artist => (artist.anv || artist.name).replace(removeArtistNdx, ''))
					.filter(function(artist) {
					  return !albumArtists.slice(2).some(it => Array.isArray(it) && it.includes(artist))
					  	&& !trackArtists.slice(2).some(it => Array.isArray(it) && it.includes(artist))
					});
				  tracks.push({
					artist: artist,
					album: album,
					album_year: master.year,
					release_date: release.released,
					label: label.join(' / '),
					catalog: catalogue.join(' / '),
					country: release.country,
					encoding: encoding,
					codec: format,
					bitrate: bitrate,
					bd: bd,
					media: media,
					genre: tags.toString(),
					discnumber: discNumber,
					totaldiscs: release.format_quantity,
					discsubtitle: discSubtitle,
					tracknumber: trackNumber,
					totaltracks: totalTracks,
					title: track.title,
					track_artist: trackArtist,
					performer: Array.isArray(performer) && performer.join('; ') || undefined,
					composer: stringyfyRole(3),
					conductor: stringyfyRole(4),
					remixer: stringyfyRole(2),
					compiler: stringyfyRole(5),
					producer: stringyfyRole(6),
					duration: timeStringToTime(track.duration),
					description: description,
					identifiers: mergeIds(),
					cover_url: imgUrl,
				  });

				  function stringyfyRole(ndx) {
					return (Array.isArray(trackArtists[ndx]) && trackArtists[ndx].length > 0 ?
						trackArtists : albumArtists)[ndx].join('; ');
				  }
				}
			  }
			});
			return tracks;
		  }
		});
	  } else if (url.toLowerCase().includes('supraphonline.cz/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url.replace(/\?.*$/, ''), onload: function(response) {
		  prologue(response);
		  const copyrightParser = /^(?:\([PC]\)|℗|©)$/i;
		  var ndx, conductor = [], origin = new URL(response.finalUrl).origin;
		  genres = undefined; artist = [];
		  dom.querySelectorAll('h2.album-artist > a').forEach(function(it) {
			artist.pushUnique(it.title);
		  });
		  if (artist.length == 0 && (ref = dom.querySelector('h2.album-artist[title]')) != null) {
			isVA = vaParser.test(ref.title);
		  }
		  ref = dom.querySelector('span[itemprop="byArtist"] > meta[itemprop="name"]');
		  if (ref != null && vaParser.test(ref.content)) isVA = true;
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector('h1[itemprop="name"]')) != null) album = ref.firstChild.data.trim();
		  if ((ref = dom.querySelector('meta[itemprop="numTracks"]')) != null) totalTracks = parseInt(ref.content);
		  if ((ref = dom.querySelector('meta[itemprop="genre"]')) != null) genres = ref.content;
		  if ((ref = dom.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'; bd = 16; }
			if (/\b(?:Hi[\s\-]*Res)\b/.test(ref.textContent)) { media = 'WEB'; encoding = 'lossless'; format = 'FLAC'; bd = 24; }
			if (/\b(?:CD)\b/.test(ref.textContent)) { media = 'CD'; }
			if (/\b(?:LP)\b/.test(ref.textContent)) { media = 'Vinyl'; }
		  }
		  dom.querySelectorAll('ul.summary > li').forEach(function(it) {
			if (it.children.length < 1) return;
			if (it.children[0].textContent.includes('Nosič')) media = it.lastChild.textContent.trim();
			if (it.children[0].textContent.includes('Datum vydání')) releaseDate = normalizeDate(it.lastChild.textContent);
			if (it.children[0].textContent.includes('První vydání')) albumYear = extractYear(it.lastChild.data);
			//if (it.children[0].textContent.includes('Žánr')) genre = it.lastChild.textContent.trim();
			if (it.children[0].textContent.includes('Vydavatel')) label = it.lastChild.textContent.trim();
			if (it.children[0].textContent.includes('Katalogové číslo')) catalogue = it.lastChild.textContent.trim();
			if (it.children[0].textContent.includes('Formát')) {
			  if (/\b(?:FLAC|WAV|AIFF?)\b/.test(it.lastChild.textContent)) { encoding = 'lossless'; format = 'FLAC'; }
			  if (/\b(\d+)[\-\s]?bits?\b/i.test(it.lastChild.textContent)) bd = parseInt(RegExp.$1);
			  if (/\b([\d\.\,]+)[\-\s]?kHz\b/.test(it.lastChild.textContent)) sr = parseFloat(RegExp.$1.replace(',', '.'));
			}
			if (it.children[0].textContent.includes('Celková stopáž')) totalTime = timeStringToTime(it.lastChild.textContent.trim());
			if (copyrightParser.test(it.children[0].textContent) && !albumYear) albumYear = extractYear(it.lastChild.data);
		  });
		  const creators = ['autoři', 'interpreti', 'tělesa', 'digitalizace'];
		  artists = [];
		  for (i = 0; i < 4; ++i) artists[i] = {};
		  dom.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;
			  let role;
			  if (ndx == 2) 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] = [];
				var href = new URL(ref.href);
				artists[ndx][role].pushUnique([ref.textContent.trim(), origin + href.pathname]);
			  }
			}
		  });
		  getDescFromNode('div[itemprop="description"] p', response.finalUrl, true);
		  composer = [];
		  var performers = [], DJs = [];
		  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 (i = 1; i < 3; ++i) Object.keys(artists[i]).forEach(function(role) { // performers
			var a = artists[i][role].map(a => a[0]);
			artist.pushUnique(...a);
			(['conductor', 'choirmaster'].includes(role) ? conductor : role == 'DJ' ? DJs : performers).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.some(rx => rx.test(it))));
			dumpArtist(0, role);
		  });
		  Object.keys(artists[3]).forEach(role => { dumpArtist(3, role) }); // ADC & mastering
		  if ((ref = dom.querySelector('meta[itemprop="image"]')) != null) imgUrl = ref.content.replace(/\?.*$/, '');
		  var promises = [];
		  dom.querySelectorAll('table.table-tracklist > tbody > tr').forEach(function(row) {
			promises.push(row.id && (ref = row.querySelector('td > a.trackdetail')) != null ? new Promise(function(resolve, reject) {
			  var id = parseInt(row.id.replace(/^track-/i, ''));
			  GM_xmlhttpRequest({
				method: 'GET',
				url: origin + ref.pathname + ref.search,
				context: id,
				onload: function(response) {
				  if (response.readyState == 4 || response.status == 200) {
					var domDetail = domParser.parseFromString(response.responseText, 'text/html');
					var track = domDetail.getElementById('track-' + response.context);
					if (track != null) {
					  resolve([track, domDetail.querySelector('div[data-swap="trackdetail-' + response.context + '"] > div > div.row')]);
					} else reject('Track detail not located');
				  } else {
					reject('Response error ' + response.status + ' (' + response.statusText + ')');
				  }
				},
				onerror: function(error) {
				  reject(new Error('GM_xmlhttpRequest readyState=' + error.readyState +
					', status=' + error.status + ' (' + error.error + ')'));
				},
				onabort: abort => { reject('XHR: abort') },
				ontimeout: timeout => { reject('XHR: timeout') },
			  });
			}) : Promise.resolve([row, null]));
		  });
		  return Promise.all(promises).then(function(rows) {
			rows.forEach(function(tr) {
			  if (!(tr[0] instanceof HTMLElement)) throw new Error('Assertion failed: tr[0] != HTMLElement');
			  if (tr[0].id && tr[0].classList.contains('track')) {
				tr[2] = [];
				for (i = 0; i < 8; ++i) tr[2][i] = [];
				if (!(tr[1] instanceof HTMLElement)) return;
				tr[1].querySelectorAll('div[class]:nth-of-type(2) > ul > li > span').forEach(function(li) {
				  function oneOf(...arr) { return arr.some(role => key == role) }
				  var key = translateRole(li);
				  var val = li.nextElementSibling.textContent.trim();
				  if (pseudoArtistParsers.some(rx => rx.test(val))) return;
				  if (key.startsWith('remix')) {
					tr[2][2].pushUnique(val);
				  } else if (oneOf('music', 'lyrics', 'music+lyrics', 'original lyrics', 'czech lyrics', 'libreto', 'music improvisation', 'author')) {
					tr[2][3].pushUnique(val);
				  } else if (oneOf('conductor', 'choirmaster')) {
					tr[2][4].pushUnique(val);
				  } else if (key == 'DJ') {
					tr[2][5].pushUnique(val);
				  } else if (key == 'produced by') {
					tr[2][6].pushUnique(val);
				  } else if (key == 'recorded by') {
				  } else {
					tr[2][7].pushUnique(val);
				  }
				});
			  }
			});
			var guests = rows.filter(tr => tr.length >= 3).map(it => it[2][7])
				.reduce((acc, trpf) => trpf.filter(trpf => acc.includes(trpf)))
				.filter(it => !artist.includes(it));
			rows.forEach(function(tr) {
			  if (tr[0].classList.contains('cd-header')) {
				discNumber = /\b\d+\b/.test(tr[0].querySelector('h3').firstChild.data.trim())
					&& parseInt(RegExp.lastMatch) || undefined;
			  }
			  if (tr[0].classList.contains('song-header')) discSubtitle = tr[0].children[0].title.trim() || undefined;
			  if (tr[0].id && tr[0].classList.contains('track')) {
				var copyright, trackGenre, trackYear, recordPlace, recordDate, trackIdentifiers = {};
				if (/^track-(\d+)$/i.test(tr[0].id)) trackIdentifiers.TRACK_ID = RegExp.$1;
				if (tr[1] instanceof HTMLElement) {
				  tr[1].querySelectorAll('div[class]:nth-of-type(1) > ul > li > span').forEach(function(li) {
					if (li.textContent.startsWith('Nahrávka dokončena')) {
					  trackIdentifiers.RECYEAR = extractYear(recordDate = li.nextSibling.data.trim());
					}
					if (li.textContent.startsWith('Místo nahrání')) {
					  recordPlace = li.nextSibling.data.trim();
					}
					if (li.textContent.startsWith('Rok prvního vydání')) {
					  trackIdentifiers.PUBYEAR = (trackYear = parseInt(li.nextSibling.data));
					}
					//if (copyrightParser.test(li.textContent)) copyright = li.nextSibling.data.trim();
					if (li.textContent.startsWith('Žánr')) trackGenre = li.nextSibling.data.trim();
				  });
				}
				if (!isVA && tr[2][0].equalTo(artist)) tr[2][0] = [];
				tracks.push({
				  artist: isVA ? VA : artist.join('; '),
				  album: album,
				  album_year: /*trackYear || */albumYear || undefined,
				  release_date: releaseDate,
				  label: label,
				  catalog: catalogue,
				  encoding: encoding,
				  codec: format,
				  bd: bd,
				  sr: sr * 1000,
				  media: media,
				  genre: translateGenre(genres) + ' | ' + translateGenre(trackGenre),
				  discnumber: discNumber,
				  totaldiscs: totalDiscs,
				  discsubtitle: discSubtitle,
				  tracknumber: /^\s*(\d+)\.?\s*$/.test(tr[0].children[0].firstChild.textContent) ?
				  	parseInt(RegExp.$1) : undefined,
				  totaltracks: totalTracks,
				  title: tr[0].querySelector('meta[itemprop="name"]').content,
				  track_artist: joinArtists(tr[2][0]),
				  performer: tr[2][7].join('; ') || performers.join('; '),
				  composer: tr[2][3].join(', ') || composer.join(', '),
				  conductor: tr[2][4].join('; ') || conductor.join('; '),
				  remixer: tr[2][2].join('; '),
				  compiler: tr[2][5].join('; ') || DJs.join('; '),
				  producer: tr[2][6].join('; '),
				  duration: durationFromMeta(tr[0]),
				  url: response.finalUrl,
				  description: description,
				  identifiers: mergeIds(),
				  cover_url: imgUrl,
				});
			  }
			});
			resolve(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))$/i, 'Alternative'],
			  ['Dechová hudba', 'Brass Music'],
			  ['Elektronika', 'Electronic'],
			  ['Folklor', 'Folclore, World Music'],
			  ['Instrumentální hudba', 'Instrumental'],
			  ['Latinské rytmy', 'Latin'],
			  ['Meditační hudba', 'Meditative'],
			  ['Vojenská hudba', 'Military Music'],
			  ['Pro děti', 'Children'],
			  ['Pro dospělé', 'Adult'],
			  ['Mluvené slovo', 'Spoken Word'],
			  ['Audiokniha', 'audiobook'],
			  ['Humor', 'humour'],
			  ['Pohádka', 'Fairy-Tale'],
			].forEach(function(subst) {
			  if (typeof subst[0] == 'string' && genre.toLowerCase() == subst[0].toLowerCase()
				 || subst[0] instanceof RegExp && subst[0].test(genre)) genre = subst[1];
			});
			return genre;
		  }
		  function translateRole(elem) {
			if (!(elem instanceof HTMLElement)) return undefined;
			var role = elem.textContent.trim().toLowerCase().replace(/\s*:.*$/, '');
			[
			  [/\b(?:klavír)\b/, 'piano'],
			  [/\b(?:housle)\b/, 'violin'],
			  [/\b(?:varhany)\b/, 'organ'],
			  [/\b(?:cembalo)\b/, 'harpsichord'],
			  [/\b(?:trubka)\b/, 'trumpet'],
			  [/\b(?:soprán)\b/, 'soprano'],
			  [/\b(?:alt)\b/, 'alto'],
			  [/\b(?:baryton)\b/, 'baritone'],
			  [/\b(?:bas)\b/, 'basso'],
			  [/\b(?:syntezátor)\b/, 'synthesizer'],
			  [/\b(?:zpěv)\b/, 'vocals'],
			  [/^(?:čte|četba)$/, 'narration'],
			  ['vypravuje', 'narration'],
			  ['komentář', 'commentary'],
			  ['hovoří', 'spoken by'],
			  ['hovoří a zpívá', 'speaks and sings'],
			  ['improvizace', 'improvisation'],
			  ['hudební těleso', 'ensemble'],
			  ['hudba', 'music'],
			  ['text', 'lyrics'],
			  ['hudba+text', 'music+lyrics'],
			  ['původní text', 'original lyrics'],
			  ['český text', 'czech lyrics'],
			  ['hudební improvizace', 'music improvisation'],
			  ['autor', 'author'],
			  ['účinkuje', 'participating'],
			  ['řídí', 'conductor'],
			  ['dirigent', 'conductor'],
			  ['sbormistr', 'choirmaster'],
			  ['produkce', 'produced by'],
			  ['nahrál', 'recorded by'],
			  ['digitální přepis', 'A/D transfer'],
			].forEach(function(subst) {
			  if (typeof subst[0] == 'string' && role.toLowerCase() == subst[0].toLowerCase()
				 || subst[0] instanceof RegExp && subst[0].test(role)) role = role.replace(subst[0], subst[1]);
			});
			return role;
		  }
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('bontonland.cz/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  ref = dom.querySelector('div#detailheader > h1');
		  if (ref != null && /^(.*?)\s*:\s*(.*)$/.test(ref.textContent.trim())) {
			artist = RegExp.$1;
			isVA = vaParser.test(artist);
			album = RegExp.$2;
		  }
		  media = 'CD';
		  dom.querySelectorAll('table > tbody > tr > td.nazevparametru').forEach(function(it) {
			if (it.textContent.includes('Datum vydání')) {
			  releaseDate = normalizeDate(it.nextElementSibling.textContent);
			  albumYear = extractYear(it.nextElementSibling.textContent);
			} else if (it.textContent.includes('Nosič / počet')) {
			  if (/^(.*?)\s*\/\s*(.*)$/.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();
			}
		  });
		  getDescFromNode('div#detailtabpopis > div[class^="pravy"] > div > p:not(:last-of-type)', response.finalUrl, true);
		  if ((ref = dom.querySelector('a.detailzoom')) != null) imgUrl = ref.href;
		  const plParser = /^(\d+)(?:\s*[\/\.\-\:\)])?\s+(.*?)(?:\s+((?:(?:\d+:)?\d+:)?\d+))?$/;
		  ref = dom.querySelector('div#detailtabpopis > div[class^="pravy"] > div > p:last-of-type');
		  if (ref == null) throw new Error('Playlist not located');
		  var trackList = html2php(ref, response.finalUrl).trim().split(/[\r\n]+/);
		  trackList = trackList.filter(it => plParser.test(it.trim())).map(it => plParser.exec(it.trim()));
		  resolve(Array.from(trackList).map(track => ({
			artist: isVA ? VA : artist,
			album: album,
			//album_year: extractYear(releaseDate),
			release_date: releaseDate,
			label: label,
			media: media,
			tracknumber: track[1],
			totaltracks: trackList.length,
			title: track[2],
			duration: timeStringToTime(track[3]),
			url: response.finalUrl,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  })));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('nativedsd.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  if ((ref = dom.querySelector('div.the-content > header > h2')) != null) artist = ref.firstChild.data.trim();
		  isVA = vaParser.test(artist);
		  if ((ref = dom.querySelector('div.the-content > header > h1')) != null) album = ref.firstChild.data.trim();
		  if ((ref = dom.querySelector('div.the-content > header > h3')) != null) composer = ref.firstChild.data.trim();
		  if ((ref = dom.querySelector('div.the-content > header > h1 > small')) != null) albumYear = extractYear(ref.firstChild.data);
		  releaseDate = albumYear; // weak
		  ref = dom.querySelector('div#breadcrumbs > div[class] > a:nth-of-type(2)');
		  if (ref != null) label = ref.firstChild.data.trim();
		  if (label == 'Albums') label = undefined;
		  if ((ref = dom.querySelector('h2#sku')) != null) {
			if (/^Catalog Number: (.*)$/m.test(ref.firstChild.textContent)) catalogue = RegExp.$1;
			if (/^ID: (.*)$/m.test(ref.lastChild.textContent)) identifiers.NATIVEDSD_ID = RegExp.$1;
		  }
		  identifiers.ORIGINALFORMAT = 'DSD';
		  getDescFromNode('div.the-content > div.entry > p', response.finalUrl, false);
		  if ((ref = dom.querySelector('div#repertoire > div > p')) != null) {
			let repertoire = html2php(ref, url);
			if (description) description += '\n\n';
			let ndx = repertoire.indexOf('\n[b]Track');
			description += (ndx >= 0 ? repertoire.slice(0, ndx) : repertoire).trim().flatten();
		  }
		  ref = dom.querySelectorAll('div#techspecs > table > tbody > tr');
		  if (ref.length > 0) {
			if (description) description += '\n\n';
			description += '[b][u]Tech specs[/u][/b]';
			ref.forEach(function(it) {
			  description += '\n[b]'.concat(it.children[0].textContent.trim(), '[/b] ', it.children[1].textContent.trim());
			});
		  }
		  if ((ref = dom.querySelector('a#album-cover')) != null) imgUrl = ref.href;
		  trs = dom.querySelectorAll('div#track-list > table > tbody > tr[id^="track"]');
		  resolve(Array.from(trs).map(function(tr) {
			title = undefined;
			trackIdentifiers = { TRACK_ID: tr.id.replace(/^track-/i, '') };
			var trackComposer;
			if ((ref = tr.children[1]) != null) {
			  title = ref.firstChild.textContent.trim();
			  trackComposer = ref.childNodes[2] && ref.childNodes[2].textContent.trim() || undefined;
			}
			return {
			  artist: isVA ? VA : artist,
			  album: album,
			  album_year: albumYear,
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  encoding: 'lossless', // encoding
			  codec: 'FLAC', // format
			  bd: 24,
			  sr: 88200,
			  media: media,
			  genre: genres.join('; '), // 'Jazz'
			  discnumber: discNumber,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle,
			  tracknumber: (ref = tr.children[0].children[0]) != null ?
			  	parseInt(ref.firstChild.data.trim().replace(/\..*$/, '')) : undefined,
			  totaltracks: trs.length,
			  title: title,
			  composer: trackComposer || composer,
			  duration: (ref = tr.children[2]) != null ? timeStringToTime(ref.firstChild.data) : undefined,
			  url: response.finalUrl,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  }));

		  function getArtists(elem) {
			if (elem == null) return undefined;
			var artists = [];
			splitArtists(elem.textContent.trim()).forEach(function(it) {
			  artists.push(it.replace(/\s*\([^\(\)]*\)$/, ''));
			});
			return artists.join(', ');
		  }
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('junodownload.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  if (/\/([\d\-]+)\/?$/.test(response.finalUrl)) identifiers.JUNODOWNLOAD_ID = RegExp.$1;
		  var productArtist;
		  if ((ref = dom.querySelectorAll('div.breadcrumb_text > span:not([class])')).length == 4) {
			artist = Array.from(ref[ref.length - 1].querySelectorAll('a')).map(elem => elem.textContent.trim());
			productArtist = ref[ref.length - 1].textContent.trim();
		  } else if ((ref = dom.querySelector('h2.product-artist')) != null) {
			artist = Array.from(ref.querySelectorAll('a')).map(elem => elem.textContent.trim().titleCase());
			productArtist = ref.textContent.trim().titleCase();
		  }
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector('meta[itemprop="name"]')) != null) album = ref.content.trim();
		  if ((ref = dom.querySelector('meta[itemprop="author"]')) != null) label = ref.content.trim();
		  if ((ref = dom.querySelector('span[itemprop="datePublished"]')) != null) releaseDate = ref.firstChild.data.trim();
		  dom.querySelectorAll('div.mb-3 > strong').forEach(function(it) {
			if (it.textContent.startsWith('Genre')) {
			  ref = it;
			  while ((ref = ref.nextElementSibling) != null && ref.nodeName == 'A') genres.push(ref.textContent.trim());
			} else if (it.textContent.startsWith('Cat')) {
			  if ((ref = it.nextSibling) != null && ref.nodeType == 3) catalogue = ref.data;
			}
		  });
		  getDescFromNode('div[itemprop="review"]', response.finalUrl);
		  if ((ref = dom.querySelector('meta[property="og:image"]')) != null) imgUrl = ref.content;
		  trs = dom.querySelectorAll('div.product-tracklist > div[itemprop="track"]');
		  resolve(Array.from(trs).map(function(tr) {
			trackIdentifiers = { BPM: tr.children[2].textContent.trim() };
			trackNumber = undefined;
			tr.querySelector('div.track-title').childNodes.forEach(function(n) {
			  if (trackNumber || n.nodeType != 3) return;
			  trackNumber = n.data.trim().replace(/\s*\..*$/, '');
			});
			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);
			if (trackArtist && trackArtist == productArtist) trackArtist = undefined;
			return {
			  artist: isVA ? VA : artist.join('; '),
			  album: album,
			  album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: media,
			  genre: genres.join('; '),
			  discnumber: discNumber,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle,
			  tracknumber: trackNumber,
			  totaltracks: trs.length,
			  title: title,
			  track_artist: trackArtist,
			  duration: durationFromMeta(tr),
			  url: !identifiers.JUNODOWNLOAD_ID ? response.finalUrl : undefined,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (/\bhdtracks(?:\.\w+)+\//i.test(url)) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, onload: function(response) {
		  prologue(response);
		  dom.querySelectorAll('div.album-main-details > ul > li > span').forEach(function(it) {
			if (it.textContent.startsWith('Title')) album = it.nextSibling.data.trim();
			if (it.textContent.startsWith('Artist')) artist = it.nextElementSibling.textContent.trim();
			if (it.textContent.startsWith('Genre')) {
			  ref = it;
			  while ((ref = ref.nextElementSibling) != null) genres.push(ref.textContent.trim());
			}
			if (it.textContent.startsWith('Label')) label = it.nextElementSibling.textContent.trim();
			if (it.textContent.startsWith('Release Date')) releaseDate = normalizeDate(it.nextSibling.data.trim());
		  });
		  isVA = vaParser.test(artist);
		  if ((ref = dom.querySelector('p.product-image > img')) != null) imgUrl = ref.src;
		  trs = dom.querySelectorAll('table#track-table > tbody > tr[id^="track"]');
		  resolve(Array.from(trs).map(function(tr) {
			format = tr.querySelector('td:nth-of-type(4) > span').textContent.trim();
			sr = tr.querySelector('td:nth-of-type(5)').textContent.trim().replace(/\/.*/, '');
			if (/^([\d\.\,]+)\s*\/\s*(\d+)$/.test(sr)) {
			  sr = Math.round(parseFloat(RegExp.$1.replace(',', '.')) * 1000);
			  bd = parseInt(RegExp.$2);
			} else sr = Math.round(parseFloat(sr) * 1000);
			return {
			  artist: isVA ? VA : artist,
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  encoding: 'lossless',
			  be: bd || 24,
			  sr: sr || undefined,
			  media: media,
			  genre: genres.join('; '),
			  //discnumber: discNumber,
			  //totaldiscs: totaldiscs,
			  //discsubtitle: discSubtitle,
			  tracknumber: (ref = tr.querySelector('td:first-of-type')) != null ? parseInt(ref.textContent.trim()) : undefined,
			  totaltracks: trs.length,
			  title: (ref = tr.querySelector('td.track-name')) != null ? ref.textContent.trim() : undefined,
			  duration: (ref = tr.querySelector('td:nth-of-type(3)')) != null ? timeStringToTime(ref.textContent.trim()) : undefined,
			  url: response.finalUrl,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			}
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (/^https?:\/\/(?:\w+\.)?deezer\.com\/(?:\w+\/)*album\/(\d+)/i.test(url)) {
		return queryDeezerAPI('album/' + RegExp.$1).then(function(release) {
		  isVA = vaParser.test(release.artist.name);
		  identifiers.DEEZER_ID = release.id;
		  identifiers.RELEASETYPE = release.record_type;
		  if (release.cover_xl) imgUrl = release.cover_xl.replace('1000x1000-000000-80-0-0', '1400x1400-000000-100-0-0');
		  return release.tracks.data.map(function(track, ndx) {
			trackIdentifiers = { TRACK_ID: track.id };
			trackArtist = track.artist.name;
			if (!isVA && trackArtist && trackArtist == release.artist.name) trackArtist = undefined;
			return {
			  artist: isVA ? VA : release.artist.name,
			  album: release.title,
			  release_date: release.release_date,
			  label: release.label,
			  catalog: release.upc,
			  media: media,
			  genre: release.genres.data.map(it => it.name).join('; '),
			  tracknumber: ndx + 1,
			  totaltracks: release.nb_tracks,
			  title: track.title,
			  track_artist: trackArtist,
			  duration: track.duration,
			  //url: 'https://www.deezer.com/album/' + release.id,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  });
		});
	  } else if (url.toLowerCase().includes('spotify.com/') && /\/albums?\/(\w+)$/i.test(url)) {
		return querySpotifyAPI('albums/' + RegExp.$1).then(function(release) {
		  artist = release.artists.map(artist => artist.name);
		  isVA = release.artists.length == 0 || release.artists.length == 1 && vaParser.test(release.artists[0].name);
		  totalDiscs = release.tracks.items.reduce((acc, track) => Math.max(acc, track.disc_number), 0);
		  identifiers.SPOTIFY_ID = release.id;
		  identifiers.RELEASETYPE = release.album_type;
		  var image = release.images.reduce((acc, image) => image.width * image.height > acc.width * acc.height ? image : acc);
		  return release.tracks.items.map(function(track, ndx) {
			trackIdentifiers = {
			  TRACK_ID: track.id,
			  EXPLICIT: Number(track.explicit),
			};
			trackArtist = track.artists.map(artist => artist.name);
			if (!isVA && trackArtist.equalTo(artist)) trackArtist = [];
			return {
			  artist: isVA ? VA : joinArtists(artist),
			  album: release.name,
			  release_date: release.release_date,
			  label: release.label,
			  catalog: release.external_ids.upc,
			  media: media,
			  genre: release.genres.join('; '),
			  discnumber: track.disc_number,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle,
			  tracknumber: track.track_number,
			  totaltracks: release.total_tracks,
			  title: track.name,
			  track_artist: joinArtists(trackArtist),
			  duration: track.duration_ms / 1000,
			  //url: 'https://open.spotify.com/album/' + release.id,
			  identifiers: mergeIds(),
			  cover_url: image ? image.url : undefined,
			};
		  });
		});
	  } else if (url.toLowerCase().includes('prostudiomasters.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/page\/(\d+)$/i.test(response.finalUrl)) identifiers.PROSTUDIOMASTERS_ID = RegExp.$1;
		  artist = Array.from(dom.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 = dom.querySelector('h3.AlbumName')) != null) album = ref.textContent.trim();
		  if ((ref = dom.querySelector('div.pline')) != null
			  && /^(?:[℗©]\s*)+(\d{4})\s+(.+)/.test(ref.textContent.trim())) {
			releaseDate = RegExp.$1;
			label = RegExp.$2;
		  }
		  getDescFromNode('div.album-info', response.finalUrl, false);
		  if ((ref = dom.querySelector('img.album-art')) != null) imgUrl = ref.currentSrc || ref.src;
		  trs = dom.querySelectorAll('div.album-tracks > div.tracks > table > tbody > tr');
		  totalTracks = Array.from(trs).filter(tr => tr.classList.contains('track-playable')).length;
		  discNumber = 0;
		  trs.forEach(function(tr) {
			if (tr.classList.contains('track-playable')) {
			  trackArtist = []; sr = bd = format = title = undefined; trackIdentifiers = {};
			  if (ref = tr.getAttribute('data-track-id')) trackIdentifiers.TRACK_ID = ref;
			  trackNumber = (ref = tr.querySelector('div.num')) != null ? parseInt(ref.firstChild.textContent.trim()) : undefined;
			  if (trackNumber == 1) ++discNumber;
			  if ((ref = tr.querySelector('td.track-name > div.name')) != null) {
				title = ref.firstChild.textContent.trim();
				if ((ref = ref.querySelector(':scope small')) != null) {
				  trackArtist = splitArtists(ref.firstChild.textContent);
				  if (!isVA && trackArtist.equalTo(artist)) trackArtist = [];
				}
			  }
			  if ((ref = tr.querySelector('span.track-format')) != null && /^(\d+(?:[,\.]\d+)?)\s*([kMG]Hz)(?:\s+(\d+)-bit)?\s*\|\s*(\S+)$/i.test(ref.textContent.trim())) {
				sr = parseFloat(RegExp.$1);
				['khz', 'mhz', 'ghz'].forEach((unit, ndx) => { if (RegExp.$2.toLowerCase() == unit) sr *= 1000 ** (ndx + 1) });
				sr = Math.round(sr) || undefined;
				bd = parseInt(RegExp.$3) || undefined;
				format = RegExp.$4;
			  }
			  tracks.push({
				artist: isVA ? VA : artist.join('; '),
				album: album,
				//album_year: extractYear(releaseDate),
				release_date: releaseDate,
				label: label,
				catalog: catalogue,
				codec: format,
				bd: bd,
				sr: sr,
				media: media,
				discnumber: discNumber,
				totaldiscs: totalDiscs,
				discsubtitle: discSubtitle,
				tracknumber: trackNumber,
				totaltracks: totalTracks,
				title: title,
				track_artist: joinArtists(trackArtist),
				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();
			}
		  });
		  resolve(tracks);
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
/*
	  else if (url.toLowerCase().includes('soundcloud.com/') && prefs.soundcloud_clientid) {
 		SC.initialize({
		  client_id: prefs.soundcloud_clientid,
		  redirect_uri: 'https://dont.spam.me/',
		});
		SC.connect().then(function() { return SC.resolve(url) }).then(function(release) {
		  isVA = vaParser.test(release.artist.name);
		  identifiers.SOUNDCLOUD_ID = release.id;
		  identifiers.RELEASETYPE = release.record_type;
		  release.tracks.data.forEach(function(track, ndx) {
			trackIdentifiers = { TRACK_ID: track.id };
			trackArtist = track.artist.name;
			if (!isVA && trackArtist && trackArtist == release.artist.name) trackArtist = undefined;
			tracks.push({});
		  });
		  return tracks;
		});
		return true;
*/
	  else if (url.toLowerCase().includes('play.google.com/store/music/album/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(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 = dom.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 == 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);
		  //getDescFromNode('???', response.finalUrl, false);
		  if ((ref = dom.querySelector('h1[class][itemprop="name"] > span')) != null
			 && (ref = ref.parentNode.parentNode.querySelector('div[class] > span[class]')) != null
			 && /\bExplicit/i.test(ref.textContent)) identifiers.EXPLICIT = 1;
		  if ((ref = dom.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 + ')');
		  }
		  if ((ref = dom.querySelector('meta[itemprop="image"]')) != null) imgUrl = ref.content;
		  var volumes = dom.querySelectorAll('c-wiz > div > h2');
		  if (volumes.length <= 0) {
			//dom.querySelectorAll('c-wiz > div > table > tbody > tr[class]').forEach(scanPlaylist);
			trackNumber = 0;
			root.querySelectorAll('div[itemprop="track"]').forEach(function(tr) {
			  trackArtist = undefined; 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;
			  if ((ref = tr.querySelector('div[itemprop="byArtist"]')) != null) {
				trackArtist = Array.from(ref.querySelectorAll('meta[itemprop="name"]')).map(it => it.content);
				trackArtist = (isVA || !Array.isArray(artist) || !trackArtist.equalTo(artist)) && joinArtists(trackArtist) || undefined;
			  }
			  duration = durationFromMeta(tr);
			  addTrack();
			});
		  } else volumes.forEach(function(volume) {
			discNumber = undefined; discSubtitle = volume.textContent.trim();
			guessDiscNumber();
			volume.nextElementSibling.querySelectorAll('tbody > tr[class]').forEach(scanPlaylist);
		  });
		  resolve(tracks);

		  function scanPlaylist(tr) {
			trackNumber = (ref = tr.querySelector('td:nth-of-type(1) > div')) != null ? parseInt(ref.textContent) : 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());
			trackArtist = (isVA || !Array.isArray(artist) || !trackArtist.equalTo(artist)) && joinArtists(trackArtist) || undefined;
			addTrack();
		  }
		  function addTrack() {
			tracks.push({
			  artist: isVA ? VA : artist.join('; '),
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: media,
			  genre: genres.join('; '),
			  discnumber: discNumber,
			  totaldiscs: totalDiscs,
			  discsubtitle: discSubtitle,
			  tracknumber: trackNumber,
			  totaltracks: totalTracks,
			  title: title,
			  track_artist: trackArtist,
			  duration: duration,
			  url: identifiers.GOOGLE_ID ? undefined : response.finalUrl,
			  //description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			});
		  }
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('7digital.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if ((ref = dom.querySelector('table.release-track-list')) != null) identifiers['7DIGITAL_ID'] = ref.dataset.releaseid;
		  artist = Array.from(dom.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 (isVA) artist = [];
		  if ((ref = dom.querySelector('h1.release-info-title')) != null) album = ref.textContent.trim();
		  if ((ref = dom.querySelector('div.release-date-info > p')) != null) releaseDate = normalizeDate(ref.textContent);
		  if ((ref = dom.querySelector('div.release-label-info > p')) != null) label = ref.textContent.trim();
		  dom.querySelectorAll('dl.release-data > dt.release-data-label').forEach(function(dt) {
			if (/\bGenres?:/.test(dt.textContent)) genres = Array.from(dt.nextElementSibling.querySelectorAll('a')).map(a => a.textContent.trim());
		  });
		  //getDescFromNode('div.album-info', response.finalUrl, false);
		  if ((ref = dom.querySelector('span.release-packshot-image > img[itemprop="image"]')) != null) imgUrl = ref.src;
		  totalTracks = dom.querySelectorAll('table.release-track-list > tbody > tr.release-track').length;
		  dom.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 = tr.dataset.trackid;
			  tracks.push({
				artist: isVA ? VA : artist.join('; '),
				album: album,
				//album_year: extractYear(releaseDate),
				release_date: releaseDate,
				label: label,
				catalog: catalogue,
				media: media,
				genre: genres.join('; '),
				discnumber: discNumber,
				totaldiscs: totalDiscs,
				discsubtitle: discSubtitle,
				tracknumber: (ref = tr.querySelector('td.release-track-preview > em.release-track-preview-text')) != null ?
					ref.textContent.trim() : undefined,
				totaltracks: totalTracks,
				title: (ref = tr.querySelector('td.release-track-name > meta[itemprop="name"]')) != null ?
					ref.content : undefined,
				duration: durationFromMeta(tr),
				url: !identifiers['7DIGITAL_ID'] ? response.finalUrl : undefined,
				description: description,
				identifiers: mergeIds(),
				cover_url: imgUrl,
			  });
			});
		  });
		  resolve(tracks);
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('e-onkyo.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/album\/(\w+)\/?$/.test(response.finalUrl)) identifiers.EONKYO_ID = RegExp.$1;
		  artist = Array.from(dom.querySelectorAll('div.jacketDetailArea p.artistsName > a'))
			.map(node => node.textContent.trim());
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector('div.jacketDetailArea p.packageTtl')) != null) album = ref.textContent.trim();
		  if ((ref = dom.querySelector('div.jacketDetailArea p.recordlabelName > a')) != null) label = ref.textContent.trim();
		  if ((ref = dom.querySelector('div.jacketDetailArea p.releaseDay > a')) != null) releaseDate = normalizeDate(ref.textContent);
		  if ((ref = dom.querySelector('div.jacketDetailArea p.packageNoteDetail')) != null
			  && /^\s*(?:\(C\)|©)\s+(\d{4})\b/i.test(ref.lastChild.textContent)) albumYear = parseInt(RegExp.$1);
		  //getDescFromNode('div#credit', response.finalUrl, true);
		  if (/\s+\(\s*(?:(\d+)[\-\s]*bit)?\s*\/?\s*(?:(\d+(?:\.\d+)?)\s*kHz)?\s*\)\s*$/i.test(album)) {
			album = RegExp.leftContext;
			bd = parseInt(RegExp.$1) || undefined;
			sr = parseFloat(RegExp.$2);
		  }
		  if ((ref = dom.querySelector('figure > a.colorbox')) != null) {
			imgUrl = new URL(response.finalUrl).origin + ref.pathname;
		  }
		  trs = dom.querySelectorAll('dl.musicList > dd.musicBox');
		  resolve(Array.from(trs).map(tr => ({
			//var trackId = tr.dataset.trackid;
			//if (trackId) trackId = 'TRACK_ID=' + trackId;
			//trackArtist = tr.children[5].textContent.trim();
			//if (trackArtist == artist.join(', ')) trackArtist = undefined;
			artist: isVA ? VA : artist.join('; '),
			album: album,
			album_year: albumYear,
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			encoding: 'lossless',
			codec: 'FLAC',
			bd: bd,
			sr: sr * 1000 || undefined,
			media: media,
			//discnumber: discNumber,
			//totaldiscs: totalDiscs,
			//discsubtitle: discSubtitle,
			tracknumber: (ref = tr.querySelector('div.musicListNo')) != null ? ref.textContent.trim() : undefined,
			totaltracks: trs.length,
			title: (ref = tr.querySelector('div.musicTtl > span')) != null ? ref.title : undefined,
			duration: (ref = tr.querySelector('div.musicTime')) != null ? timeStringToTime(ref.textContent.trim()) : undefined,
			url: !identifiers.EONKYO_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  })));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('store.acousticsounds.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/(\d+)\/$/.test(response.finalUrl)) identifiers.ACOUSTICSOUNDS_ID = RegExp.$1;
		  artist = Array.from(dom.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 = dom.querySelector('div > h1')) != null) album = ref.lastChild.wholeText.trim().replace(/\s*-\s*/, '');
		  dom.querySelectorAll('div > p > table > tbody > tr > td:first-of-type').forEach(function(td) {
			if (/^(?:Label):/i.test(td.textContent)) label = td.nextElementSibling.textContent.trim();
			if (/^(?:Genre):/i.test(td.textContent)) genres[0] = td.nextElementSibling.textContent.trim();
			if (/^(?:Product\s+No):/i.test(td.textContent)) catalogue = td.nextElementSibling.textContent.trim();
			if (/^(?:Category):/i.test(td.textContent)
				&& /^(.+)\s+(\d+(?:\.\d+)?)\s*kHz(?:\s*\/\s*(\d+)[\s\-]?bit)?\s+Download\b/.test(td.nextElementSibling.textContent.trim())) {
			  format = RegExp.$1;
			  sr = parseFloat(RegExp.$2) * 1000;
			  bd = parseInt(RegExp.$3);
			}
		  });
		  getDescFromNode('div#description > p', response.finalUrl, true);
		  if ((ref = dom.querySelector('div#detail > link[rel="image_src"]')) != null) {
			imgUrl = ref.href.replace(/\/medium\//i, '/large/');
		  }
		  trs = dom.querySelectorAll('div#tracks > table > tbody > tr');
		  trackNumber = 0;
		  resolve(Array.from(trs).map(tr => ({
			artist: isVA ? VA : artist.join('; '),
			album: album,
			//album_year: extractYear(releaseDate),
			release_date: releaseDate,
			label: label,
			catalog: catalogue,
			encoding: ['FLAC', 'DSD'].includes(format) ? 'lossless' : undefined,
			codec: format,
			bd: bd,
			sr: sr,
			media: media,
			genre: genres.join('; '),
			//discnumber: discNumber,
			//totaldiscs: totalDiscs,
			//discsubtitle: discSubtitle,
			tracknumber: ++trackNumber,
			totaltracks: trs.length,
			title: (ref = tr.querySelector('td[nowrap]')) != null ? ref.textContent.trim() : undefined,
			url: !identifiers.ACOUSTICSOUNDS_ID ? response.finalUrl : undefined,
			description: description,
			identifiers: mergeIds(),
			cover_url: imgUrl,
		  })));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('indies.eu/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/alba\/(\d+)\//.test(response.finalUrl)) identifiers.INDIESSCOPE_ID = RegExp.$1;
		  ref = dom.querySelector(':root > body > div > div > div > h2');
		  if (ref != null) artist = Array.from(ref.childNodes).map(node => node.textContent.trim());
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector(':root > body > div > div > div > h1')) != null) album = ref.textContent.trim();
		  if ((ref = dom.querySelector('div.infoBox')) != null) {
			let ndx = 0;
			ref.childNodes.forEach(function(child) {
			  if (child.nodeName == 'BR') { ++ndx; return; }
			  switch (ndx) {
				case 0:
				  if (child.nodeType == Node.TEXT_NODE) {
					label = child.wholeText.trim();
					if (/^(.*)\s+\/\s+(\d{4})$/.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;
			  }
			});
		  }
		  getDescFromNode('div.popis > section', response.finalUrl, true);
		  if ((ref = dom.querySelector('div.obrazekDetail > img')) != null) imgUrl = ref.src;
		  trs = dom.querySelectorAll('table.skladby > tbody > tr');
		  resolve(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 : artist.join('; '),
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  codec: format,
			  media: media,
			  genre: genres.join('; '),
			  //discnumber: discNumber,
			  //totaldiscs: totalDiscs,
			  //discsubtitle: discSubtitle,
			  tracknumber: trackNumber,
			  totaltracks: 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,
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('beatport.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/release\/(?:\d\/)?(?:\S+-)?(\d+)\b/i.test(response.finalUrl)) identifiers.BEATPORT_ID = RegExp.$1;
		  artist = Array.from(dom.querySelectorAll('span > a[data-artist]')).map(node => node.textContent.trim());
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector('div > h1')) != null) album = ref.textContent.trim();
		  dom.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();
		  });
		  getDescFromNode('div.interior-expandable', response.finalUrl, true);
		  if ((ref = dom.querySelector('div > img.interior-release-chart-artwork')) != null) imgUrl = ref.src;
		  trs = dom.querySelectorAll('div.tracks > ul > li.track');
		  resolve(Array.from(trs).map(function(tr) {
			title = undefined; trackIdentifiers = {};
			if ((ref = tr.querySelector('span.buk-track-primary-title')) != null) {
			  title = ref.title || ref.textContent.trim();
			  if ((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 (!isVA && trackArtist.equalTo(artist)) trackArtist = [];
			if ((ref = tr.querySelector('p.buk-track-bpm')) != null) trackIdentifiers.BPM = ref.textContent;
			return {
			  artist: isVA ? VA : artist.join('; '),
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: (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('; '),
			  //discnumber: discNumber,
			  //totaldiscs: totalDiscs,
			  //discsubtitle: discSubtitle,
			  tracknumber: (ref = tr.querySelector('div.buk-track-num')) != null ? ref.textContent.trim() : undefined,
			  totaltracks: trs.length,
			  title: title,
			  track_artist: joinArtists(trackArtist),
			  remixer: Array.from(tr.querySelectorAll('p.buk-track-remixers > a')).map(a => a.textContent.trim()).join('; '),
			  duration: (ref = tr.querySelector('p.buk-track-length')) != null ? timeStringToTime(ref.textContent) : undefined,
			  url: !identifiers.BEATPORT_ID ? response.finalUrl : undefined,
			  description: description,
			  identifiers: mergeIds(),
			  cover_url: imgUrl,
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('traxsource.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/title\/(\d+)(?=\/|$)/i.test(response.finalUrl)) identifiers.TRAXSOURCE_ID = RegExp.$1;
		  artist = Array.from(dom.querySelectorAll('h1.artists > a.com-artists')).map(node => node.textContent.trim());
		  if (artist.length <= 0 && (ref = dom.querySelector('h1.artists')) != null) artist = [ref.textContent.trim()];
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector('h1.title')) != null) album = ref.textContent.trim();
		  if ((ref = dom.querySelector('a.com-label')) != null) label = ref.textContent.trim();
		  if ((ref = dom.querySelector('div.cat-rdate')) != null) {
			catalogue = ref.textContent.trim();
			if (/\s*\|\s*(\S+)$/.test(catalogue)) {
			  catalogue = RegExp.leftContent;
			  releaseDate = normalizeDate(RegExp.$1);
			}
		  }
		  getDescFromNode('div.desc', response.finalUrl, true);
		  if ((ref = dom.querySelector('meta[property="og:image"]')) != null) imgUrl = ref.content;
		  trs = dom.querySelectorAll('div.trklist > div.trk-row');
		  resolve(Array.from(trs).map(function(tr) {
			trackIdentifiers = {};
			title = (ref = tr.querySelector('div.title > a')) != null ? ref.textContent.trim() : undefined;
			if (title && (ref = tr.querySelector('span.version')) != null ) {
			  if (ref.firstChild.nodeType == Node.TEXT_NODE
				  && (i = ref.firstChild.wholeText.trim()).length > 0) title += ` (${i})`;
			}
			trackArtist = Array.from(tr.querySelectorAll('div.artists a.com-artists')).map(a => a.textContent.trim());
			if (!isVA && trackArtist.equalTo(artist)) trackArtist = [];
			return {
			  artist: isVA ? VA : artist.join('; '),
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  catalog: catalogue,
			  media: media,
			  genre: Array.from(tr.querySelectorAll('div.genre > a')).map(a => a.textContent.trim()).join('; '),
			  //discnumber: discNumber,
			  //totaldiscs: totalDiscs,
			  //discsubtitle: discSubtitle,
			  tracknumber: (ref = tr.querySelector('div.tnum')) != null ? ref.textContent.trim() : undefined,
			  totaltracks: trs.length,
			  title: title,
			  track_artist: joinArtists(trackArtist),
			  remixer: Array.from(tr.querySelectorAll('div.artists a.com-remixers')).map(a => a.textContent.trim()).join('; '),
			  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,
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  else if (url.toLowerCase().includes('music.apple.com/')) return new Promise((resolve, reject) => GM_xmlhttpRequest({
		method: 'GET', url: url, responseType: 'document', onload: function(response) {
		  prologue(response);
		  if (/\/(\d+)$/.test(response.finalUrl)) identifiers.APPLE_ID = RegExp.$1;
		  artist = Array.from(dom.querySelectorAll('span.product-header__identity > a.link')).map(a => a.textContent.trim());
		  if (artist.length <= 0 && (ref = dom.querySelector('span.product-header__identity')) != null) {
			artist = [ref.textContent.trim()];
		  }
		  isVA = artist.length <= 0 || artist.length == 1 && vaParser.test(artist[0]);
		  if (isVA) artist = [];
		  if ((ref = dom.querySelector('h1 > span.product-header__title')) != null) album = ref.textContent.trim();
		  genres = Array.from(dom.querySelectorAll('ul.inline-list > li:first-of-type > a')).map(a => a.textContent.trim());
		  if ((ref = dom.querySelector('time[datetime]')) != null) releaseDate = ref.dateTime;
		  if ((ref = dom.querySelector('li.link-list__item--copyright')) != null) {
			label = ref.textContent.replace(/^[©℗]\s+\d{4}\s+/, '');
		  }
		  //getDescFromNode('div.desc', response.finalUrl, true);
		  discNumber = 0;
		  trs = dom.querySelectorAll('table > tbody > tr[id]');
		  resolve(Array.from(trs).map(function(tr) {
			trackIdentifiers = {};
			trackNumber = (ref = tr.querySelector('span.table__row__number')) != null ? parseInt(ref.textContent) : undefined;
			if (trackNumber == 1) ++discNumber;
			trackArtist = (ref = tr.querySelector('div.table__row__titles > div:last-of-type')) != null ?
			  ref.textContent.trim() : undefined;
			if (!isVA && trackArtist == joinArtists(artist)) trackArtist = undefined;
			if ((ref = tr.querySelector('time.table__row__duration-counter')) != null
				&& /^PT(?:(?:(\d+)H)?(\d+)M)?(\d+)S$/.test(ref.dateTime)) {
			  duration = (parseInt(RegExp.$1) * 60**2 || 0) + (parseInt(RegExp.$2) * 60 || 0) + (parseInt(RegExp.$3) || 0);
			} else duration = undefined;
			return {
			  artist: isVA ? VA : artist.join('; '),
			  album: album,
			  //album_year: extractYear(releaseDate),
			  release_date: releaseDate,
			  label: label,
			  media: media,
			  genre: genres.join('; '),
			  discnumber: discNumber,
			  tracknumber: trackNumber,
			  totaltracks: trs.length,
			  title: (ref = tr.querySelector('div.table__row__headline')) != null ? ref.textContent.trim() : undefined,
			  track_artist: trackArtist,
			  duration: duration,
			  url: !identifiers.APPLE_ID ? response.finalUrl : undefined,
			  identifiers: mergeIds(),
			};
		  }));
		},
		onerror: error => { reject(defaultErrorHandler(error)) },
		onabort: abort => { reject(defaultAbortHandler(abort)) },
		ontimeout: timeOut => { reject(defaultTimeoutHandler(timeOut)) },
	  }));
	  if (!weak) clipBoard.value = '';
	  return Promise.reject(new URL(url).hostname + ' not supported');

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

	  function getDescFromNode(selector, url, quote = false) {
		description = [];
		dom.querySelectorAll(selector).forEach(function(node) {
		  var p = html2php(node, url).trim();
		  if (p) description.push(p);
		});
		description = description.join('\n\n');
		if (quote && description.length > 0 && !description.includes('[quote]')) {
		  description = '[quote]' + description + '[/quote]';
		}
	  }

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

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

	  function prologue(response) {
		if (response.readyState != 4 || response.status != 200) throw defaultErrorHandler(response);
		dom = domParser.parseFromString(response.responseText, 'text/html');
	  }
	} // fetchOnline_Music

	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.MBR_ID = album.mbid;
	  if (album.wiki && album.wiki.summary) description.push(album.wiki.summary);
	  if (album.wiki && album.wiki.content) description.push(album.wiki.content);
	  var genres = album.tags.tag.map(tag => tag.name);
	  description = description.join('\n\n');
	  var imgUrl = album.image.filter(image => image.size == /*'extralarge'*/'mega');
	  if (imgUrl.length > 0) {
		imgUrl = imgUrl[0]['#text'];
		if (imgUrl) imgUrl = imgUrl.replace(/\/\d+x\d+\//, '/');
	  } else imgUrl = undefined;
	  return Promise.resolve(album.tracks.track.map((track, ndx) => ({
		artist: album.artist,
		album: album.name,
		genre: genres.join('; ') || undefined,
		title: track.name,
		tracknumber: ndx + 1,
		track_artist: 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 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());
	}
  } // fillFromText_Music

  function fillFromText_Apps(weak = false) {
	if (messages != null) messages.parentNode.removeChild(messages);
	if (!urlParser.test(clipBoard.value)) {
	  addMessage('FATAL: valid URL accepted for this category', 'ua-critical');
	  return false;
	}
	url = RegExp.$1;
	var description, tags = new TagManager();
	if (url.toLowerCase().includes('://sanet')) {
	  GM_xmlhttpRequest({ method: 'GET', url: url, onload: function(response) {
		if (response.readyState != 4 || response.status != 200) throw defaultErrorHandler(response);
		dom = domParser.parseFromString(response.responseText, 'text/html');
		i = dom.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(dom.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 = dom.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;
		}
		ref = dom.querySelector('div.txtleft > a');
		if (ref != null) {
		  let url;
		  if (ref.pathname.toLowerCase().startsWith('/confirm/url/') && urlParser.test(ref.text)) {
			url = ref.text.trim();
		  } else url = ref.href;
		  description += '\n\n[b]Product page:[/b]\n[url]' + removeRedirect(url) + '[/url]';
		}
		writeDescription(description.collapseGaps());
		if ((ref = dom.querySelector('section.descr > div.center > a.mfp-image')) != null) {
		  setCover(ref.href);
		} else {
		  ref = dom.querySelector('section.descr > div.center > img[data-src]');
		  if (ref != null) setCover(ref.dataset.src);
		}
		var internalTags = Array.from(dom.querySelectorAll('ul.item_tags_list > li > a[rel="tag"]'))
			.map(elem => elem.textContent.toLowerCase().trim());
		if ((ref = dom.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'))) ref.value = title || '';
	  }, onerror: defaultErrorHandler, onabort: defaultAbortHandler, ontimeout: defaultTimeoutHandler });
	  return true;
	}
	if (!weak) {
	  addMessage('FATAL: this domain not supported', 'ua-critical');
	  clipBoard.value = '';
	}
	return false;
  } // fillFromText_Apps

  function fillFromText_Ebooks(weak = false) {
	if (messages != null) messages.parentNode.removeChild(messages);
	if (!urlParser.test(clipBoard.value)) {
	  addMessage('FATAL: valid URL accepted for this category', 'ua-critical');
	  return false;
	}
	url = RegExp.$1;
	var description, tags = new TagManager();
	if (url.toLowerCase().includes('martinus.cz') || url.toLowerCase().includes('martinus.sk')) {
	  GM_xmlhttpRequest({ method: 'GET', url: url, onload: function(response) {
		if (response.readyState != 4 || response.status != 200) throw defaultErrorHandler(response);
		dom = domParser.parseFromString(response.responseText, 'text/html');
		function get_detail(x, y) {
		  var ref = dom.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 = dom.querySelectorAll('article > ul > li > a');
		if (i.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		  description = joinAuthors(i);
		  if ((i = dom.querySelector('article > h1')) != null) description += ' – ' + i.textContent.trim();
		  i = dom.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 = dom.querySelector('section#description > div');
		if (ref != null) description = html2php(ref).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'],
		];
		dom.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)) {
			url = new URL('https://www.worldcat.org/isbn/' + detail.children[1].textContent.trim());
			val = '[url=' + url.href + ']' + detail.children[1].textContent.trim() + '[/url]';
			findOCLC(url);
// 		  } 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;
		});
		url = new URL(response.finalUrl);
		description += '\n\n[b]More info:[/b]\n[url]' + url.href + '[/url]';
		writeDescription(description.collapseGaps());

		if ((i = dom.querySelector('a.mj-product-preview > img')) != null) {
		  setCover(i.src.replace(/\?.*/, ''));
		} else if ((i = dom.querySelector('head > meta[property="og:image"]')) != null) {
		  setCover(i.content.replace(/\?.*/, ''));
		}

		dom.querySelectorAll('dd > ul > li > a').forEach(x => { tags.add(x.textContent) });
		if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) {
		  ref.value = tags.toString();
		}
	  }, onerror: defaultErrorHandler, onabort: defaultAbortHandler, ontimeout: defaultTimeoutHandler });
	  return true;
	} else if (url.toLowerCase().includes('goodreads.com')) {
	  GM_xmlhttpRequest({ method: 'GET', url: url, onload: function(response) {
		if (response.readyState != 4 || response.status != 200) throw defaultErrorHandler(response);
		dom = domParser.parseFromString(response.responseText, 'text/html');
		i = dom.querySelectorAll('a.authorName > span');
		if (i.length > 0 && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		  description = joinAuthors(i);
		  if ((i = dom.querySelector('h1#bookTitle')) != null) description += ' – ' + i.textContent.trim();
		  if ((i = dom.querySelector('div#details > div.row:nth-of-type(2)')) != null
			  && (i = extractYear(i.textContent))) description += ' (' + i + ')';
		  ref.value = description;
		}

		var description = [];
		dom.querySelectorAll('div#description span:last-of-type').forEach(function(node) {
		  description = html2php(node, response.finalUrl).trim();
		});
		if (description.length > 0 && !description.includes('[quote]')) {
		  description = '[quote]' + description.trim() + '[/quote]';
		}

		function strip(str) {
		  return typeof str == 'string' ?
			str.replace(/\s{2,}/g, ' ').replace(/[\n\r]+/, '').replace(/\s*\.{3}(?:less|more)\b/g, '').trim() : null;
		}

		dom.querySelectorAll('div#details > div.row').forEach(k => { description += '\n' + strip(k.innerText) });
		description += '\n';

		dom.querySelectorAll('div#bookDataBox > div.clearFloats').forEach(function(detail) {
		  var lbl = detail.children[0].textContent.trim();
		  var val = strip(detail.children[1].textContent);
		  if (/\b(?:ISBN)\b/i.test(lbl) && (/\b(\d{13})\b/.test(val) || /\b(\d{10})\b/.test(val))) {
			url = new URL('https://www.worldcat.org/isbn/' + RegExp.$1);
			val = '[url=' + url.href + ']' + strip(detail.children[1].textContent) + '[/url]';
			findOCLC(url);
		  }
		  description += '\n[b]' + lbl + ':[/b] ' + val;
		});
		if ((ref = dom.querySelector('span[itemprop="ratingValue"]')) != null) {
		  description += '\n[b]Rating:[/b] ' + Math.round(parseFloat(ref.firstChild.textContent) * 20) + '%';
		}
		url = new URL(response.finalUrl);
// 		if ((ref = dom.querySelector('div#buyButtonContainer > ul > li > a.buttonBar')) != null) {
// 		  let u = new URL(ref.href);
// 		  description += '\n[url=' + url.origin + u.pathname + '?' + u.search + ']Libraries[/url]';
// 		}
		description += '\n\n[b]More info and reviews:[/b]\n[url]' + url.origin + url.pathname + '[/url]';
		dom.querySelectorAll('div.clearFloats.bigBox').forEach(function(bigBox) {
		  if (bigBox.id == 'aboutAuthor' && (ref = bigBox.querySelector('h2 > a')) != null) {
			description += '\n\n[b][url=' + ref.href + ']' + 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=' + ref.href + ']' + ref.textContent.trim() + '[/url][/b]';
			if ((ref = bigBox.querySelector('div.bigBoxContent > div.mediumText')) != null) {
			  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 = dom.querySelector('div.editionCover > img')) != null) setCover(ref.src.replace(/\?.*/, ''));
		dom.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();
	  }, onerror: defaultErrorHandler, onabort: defaultAbortHandler, ontimeout: defaultTimeoutHandler });
	  return true;
	} else if (url.toLowerCase().includes('databazeknih.cz')) {
	  if (!url.toLowerCase().includes('show=alldesc')) {
		if (!url.includes('?')) { url += '?show=alldesc' } else { url += '&show=alldesc' }
	  }
	  GM_xmlhttpRequest({ method: 'GET', url: url, onload: function(response) {
		if (response.readyState != 4 || response.status != 200) throw defaultErrorHandler(response);
		dom = domParser.parseFromString(response.responseText, 'text/html');
		i = dom.querySelectorAll('span[itemprop="author"] > a');
		if (i != null && elementWritable(ref = document.getElementById('title') || document.querySelector('input[name="title"]'))) {
		  description = joinAuthors(i);
		  if ((i = dom.querySelector('h1[itemprop="name"]')) != null) description += ' – ' + i.textContent.trim();
		  i = dom.querySelector('span[itemprop="datePublished"]');
		  if (i != null && (i = extractYear(i.textContent))) description += ' (' + i + ')';
		  ref.value = description;
		}

		ref = dom.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'],
		];
		dom.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) {
			url = new URL('https://www.worldcat.org/isbn/' + RegExp.$1.replace(/-/g, ''));
			val = '[url=' + url.href + ']' + detail.children[1].textContent.trim() + '[/url]';
			findOCLC(url);
		  }
		  description += '\n[b]' + lbl + '[/b] ' + val;
		});

		url = new URL(response.finalUrl);
		description += '\n\n[b]More info:[/b]\n[url]' + url.origin + url.pathname + '[/url]';
		writeDescription(description.collapseGaps());

		if ((ref = dom.querySelector('div#icover_mid > a')) != null) setCover(ref.href.replace(/\?.*/, ''));
		if ((ref = dom.querySelector('div#lbImage')) != null && /\burl\("(.*)"\)/i.test(i.style.backgroundImage)) {
		  setCover(RegExp.$1.replace(/\?.*/, ''));
		}

		dom.querySelectorAll('h5[itemprop="genre"] > a').forEach(tag => { tags.add(tag.textContent.trim()) });
		dom.querySelectorAll('a.tag').forEach(tag => { tags.add(tag.textContent.trim()) });
		if (tags.length > 0 && elementWritable(ref = document.getElementById('tags'))) ref.value = tags.toString();
	  }, onerror: defaultErrorHandler, onabort: defaultAbortHandler, ontimeout: defaultTimeoutHandler });
	  return true;
	}
	if (!weak) {
	  addMessage('FATAL: domain not supported', 'ua-critical');
	  clipBoard.value = '';
	}
	return false;

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

	function findOCLC(url) {
	  if (!url) return false;
	  var oclc = document.querySelector('input[name="oclc"]');
	  if (!elementWritable(oclc)) return false;
	  GM_xmlhttpRequest({
		method: 'GET',
		url: url,
		onload: function(response) {
		  if (response.readyState != 4 || response.status != 200) return;
		  var dom = domParser.parseFromString(response.responseText, 'text/html');
		  var ref = dom.querySelector('tr#details-oclcno > td:last-of-type');
		  if (ref != null) oclc.value = ref.textContent.trim();
		},
		onerror: error => { console.error('GM_xmlhttpRequest: error') },
		onabort: abort => { console.error('XHR: abort') },
		ontimeout: timeout => { console.error('XHR: timeout') },
	  });
	  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'))) ref.value = desc;
	if ((ref = document.getElementById('body')) != null && !ref.disabled) {
	  if (ref.textLength > 0) ref.value += '\n\n';
	  ref.value += desc;
	}
  }

  function setCover(url) {
	var image = document.getElementById('image') || document.querySelector('input[name="image"]');
	return elementWritable(image) ? testImageUrl(url).then(function(url) {
	  image.value = url;
	  coverPreview(image, url);
	  if (prefs.auto_rehost_cover && !url.toLowerCase().startsWith(imghostOrigin)) {
		/*if (rehostItBtn != null) rehostItBtn.click(); else */{
		  image.disabled = true;
		  rehost2PTPIMG([url])
			.then(urls => { if (urls.length > 0) image.value = urls[0] })
			.catch(reason => { alert(reason) })
			.then(() => { image.disabled = false });
		}
	  }
	}) : Promise.reject('Image input not available');
  }

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

  function defaultErrorHandler(error, showMessage) {
	var str = 'XHR => ready state: ' + error.readyState + '; HTTP status code: ' + error.status;
	if (error.error) str += ' (' + error.error + ')';
	const e = str; //new Error(str);
	console.error(e);
	if (showMessage) addMessage(e, 'ua-critical');
	return e;
  }
  function defaultAbortHandler(abort, showMessage) {
	const e = 'XHR: abort';
	console.error(e);
	if (showMessage) addMessage(e, 'ua-critical');
	return e;
  }
  function defaultTimeoutHandler(timeout, showMessage) {
	const e = 'XHR: timeout';
	console.error(e);
	if (showMessage) addMessage(e, 'ua-critical');
	return e;
  }

  function addArtistField() { exec(function() { AddArtistField() }) }
  function removeArtistField() { exec(function() { RemoveArtistField() }) }

  function queryItunesAPI(key, params) { return queryGenericAPI('itunes.apple.com', key, params) }
  function queryDeezerAPI(key, params) { return queryGenericAPI('api.deezer.com', key, params) }
  function queryDiscogsAPI(key, params) {
	if (prefs.discogs_key && prefs.discogs_secret) {
	  var hdr = { Authorization: 'Discogs key=' + prefs.discogs_key + ', secret=' + prefs.discogs_secret };
	} else if (prefs.discogs_token) hdr = { Authorization: 'Discogs token=' + prefs.discogs_token };
	return queryGenericAPI('api.discogs.com', key, params, hdr);
  }
  function querySpotifyAPI(key, params) {
	return key ? setToken().then(credentials => queryGenericAPI('api.spotify.com', 'v1/' + key, params, {
	  'Authorization': credentials.token_type + ' ' + credentials.access_token,
	})) : Promise.reject('No API expression');

	function setToken() {
	  if (isTokenValid()) return Promise.resolve(spotifyCredentials);
	  if (!prefs.spotify_clientid || !prefs.spotify_clientsecret) return Promise.reject('Spotify credentials not configured');
	  return new Promise(function(resolve, reject) {
		const data = new URLSearchParams({
		  'grant_type': 'client_credentials',
		});
		GM_xmlhttpRequest({
		  method: 'POST',
		  url: 'https://accounts.spotify.com/api/token',
		  headers: {
			'Content-Type': 'application/x-www-form-urlencoded',
			'Content-Length': data.toString().length,
			'Authorization': 'Basic ' + btoa(prefs.spotify_clientid + ':' + prefs.spotify_clientsecret),
		  },
		  responseType: 'json',
		  data: data.toString(),
		  onload: function(response) {
			if (response.readyState == 4 && response.status == 200) {
			  spotifyCredentials = response.response;
			  spotifyCredentials.expires = new Date().getTime() + spotifyCredentials.expires_in;
			  if (isTokenValid()) resolve(spotifyCredentials); else reject('Invalid token');
			} else reject('Response error ' + response.status + ' (' + JSON.parse(response.response).error + ')');
		  },
		  onerror: error => { reject(defaultErrorHandler(error, false)) },
		  onabort: abort => { reject('XHR: abort') },
		  ontimeout: timeout => { reject('XHR: timeout') },
		});
	  });
	}

	function isTokenValid() {
	  return spotifyCredentials.token_type && spotifyCredentials.token_type
	  	&& spotifyCredentials.access_token && spotifyCredentials.expires >= new Date().getTime() + 30;
	}
  }
  function queryLastFmAPI(method, params) {
	return prefs.lastfm_api_key ? queryGenericAPI('ws.audioscrobbler.com', '2.0/', Object.assign({
	  method: method,
	  api_key: prefs.lastfm_api_key,
	  format: 'json',
	}, params || {})) : Promise.reject('Last.fm API key not configured');
  }

  function queryGenericAPI(domain, key, params, headers) {
	return new Promise(function(resolve, reject) {
	  if (key.length > 0) {
		var url = 'https://' + domain + '/' + key;
		var query = new URLSearchParams(params || undefined).toString();
		if (query.length > 0) url += '?' + query;
		if (typeof headers != 'object') headers = {};
		headers.Accept = 'application/json';
		GM_xmlhttpRequest({
		  method: 'GET',
		  url: url,
		  responseType: 'json',
		  headers: headers,
		  onload: function(response) {
			if (response.readyState == 4 || response.status == 200) resolve(response.response); else {
			  reject(defaultErrorHandler(response, false));
			}
		  },
		  onerror: error => { reject(defaultErrorHandler(error, false)) },
		  onabort: abort => { reject('XHR: abort') },
		  ontimeout: timeout => { reject('XHR: timeout') },
		});
	  } else reject(new Error('Keyword missing'));
	});
  }
} // fillFromText

function addMessage(text, cls) {
  messages = document.getElementById('UA-messages');
  if (messages == null) {
	var ua = document.getElementById('upload assistant');
	if (ua == null) return null;
	messages = document.createElement('TR');
	if (messages == null) return null;
	messages.id = 'UA-messages';
	ua.children[0].append(messages);

	elem = document.createElement('TD');
	if (elem == null) return null;
	elem.colSpan = 2;
	elem.className = 'ua-messages-bg';
	messages.append(elem);
  } else {
	elem = messages.children[0]; // tbody
	if (elem == null) return null;
  }
  var div = document.createElement('DIV');
  div.classList.add('ua-messages', cls);
  div[text instanceof HTML ? 'innerHTML' : 'textContent'] = text;
  return elem.appendChild(div);
}

function setHandlers() {
  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 ((ref = document.getElementById('yadg_input')) != null) ref.ondrop = clear0;

  if (!isNWCD) {
	if ((ref = document.getElementById('image') || document.querySelector('input[name="image"]')) != null) {
	  ref.ondragover = voidDragHandler;
	  ref.ondblclick = imageClear;
	  ref.ondrop = imageDropHandler;
	  ref.onpaste = imagePasteHandler;
	}

	rehostItBtn = document.querySelector('input.rehost_it_cover[type="button"]');
	if (prefs.dragdrop_patch_to_ptpimgit && rehostItBtn != null) {
	  rehostItBtn.dataset.caption = rehostItBtn.value;
	  rehostItBtn.ondragover = voidDragHandler;
	  rehostItBtn.ondrop = rehostDropHandler;
	}
  }

  Array.from(document.getElementsByTagName('textarea')).forEach(function(textArea) {
	if (textArea.className == 'ua-input') return;
	textArea.ondragover = voidDragHandler;
	textArea.ondrop = descDropHandler;
	textArea.onpaste = descPasteHandler;
  });
}

function html2php(node, url, tagChain = []) {
  if (typeof node != 'object') 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';
		  break;
		case 'DD':
		  text[4] = '\n';
		  if (isRED) addTag('pad=0|0|0|30'); else text[0] = '     ';
		  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$/.test(tag))) {
			case 'ol': text[0] = '[#] '; text[4] = '\n'; break;
			case 'ul': text[0] = '[*] '; text[4] = '\n'; break;
			default: return '';
		  }
		  break;
		case 'A': {
		  addTag('url=' + removeRedirect(node.href));
		  break;
		}
		case 'IMG':
		  addTag('img');
		  text[2] = node.dataset.src || node.src;
		  break;
		case 'DETAILS': {
		  let summary = node.querySelector('summary');
		  summary = summary != null ? '='.concat(summary.textContent.trim()) : '';
		  addTag('hide' + summary);
		  break;
		}
		case 'AUDIO': case 'BASE': case 'BUTTON': case 'CANVAS': case 'COL': case 'COLGROUP': case 'DATALIST':
		case 'DIALOG': case 'EMBED': case 'FIELDSET': case 'FORM': case 'HEAD': case 'INPUT': case 'LEGEND':
		case 'LINK': case 'MAP': case 'META': case 'METER': case 'NOSCRIPT': case 'OBJECT': case 'OPTGROUP':
		case 'OPTION': case 'PARAM': case 'PROGRESS': case 'SELECT': case 'SOURCE': case 'STYLE': case 'SUMMARY':
		case 'SVG': case 'TEMPLATE': case 'TEXTAREA': case 'TITLE': case 'TRACK': case 'VIDEO':
		  return '';
	  }
	  if (['left', 'center', 'right'].some(al => node.style.textAlign.toLowerCase() == al)) {
		addTag('align=' + node.style.textAlign.toLowerCase());
	  }
	  if (node.style.fontWeight >= 700) addTag('b');
	  switch (node.style.fontStyle.toLowerCase()) {
		case 'italic': addTag('i'); break;
	  }
	  switch (node.style.textDecorationLine.toLowerCase()) {
		case 'underline': addTag('u'); break;
		case 'line-through': addTag('s'); break;
	  }
	  if (node.style.color) {
		ctxt.fillStyle = elem.style.color;
		if (ctxt.fillStyle != '#000000' && /^#(?:[a-f0-8]{2}){3,4}$/i.test(ctxt.fillStyle)) {
		  addTag('color=' + ctxt.fillStyle);
		}
	  }
	  if (!text[2]) node.childNodes.forEach(function(node) {
		text[2] += html2php(node, url, tagChain.concat(tags.concat(_tags).map(tag => tag.replace(/=.*$/, ''))));
	  });
	  if (node.nodeName = 'A' && text[2].trim().length <= 0) {
		text[2] = removeRedirect(node.href);
		tags.splice(-1, 1, 'url');
	  }
	  return text[0].concat((text[1] || text[2] || text[3] ? tags.map(tag => '[' + tag + ']').join('').concat(text[1],
		text[2], text[3], tags.reverse().map(tag => '[/' + tag.replace(/=.*$/, '') + ']').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 html2php(node.body, url);
  }
  return '';
}

function coverPreview(anchor, src, size) {
  if (!prefs.auto_preview_cover || anchor.parentNode.previousElementSibling == null) return;
  if ((child = document.getElementById('cover-preview')) == null) {
	if (!(anchor instanceof HTMLElement)) 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';
	elem.append(div);
	anchor.parentNode.previousElementSibling.append(document.createElement('br'));
	anchor.parentNode.previousElementSibling.append(elem);
  }
  div = div || document.getElementById('cover-size');
  div.style.backgroundColor = null;
  if (urlParser.test(src)) {
	child.onload = function(evt) {
	  this.onload = null;
	  if (!this.naturalWidth || !this.naturalHeight) return; // invalid image
	  (size > 0 ? Promise.resolve(size) : getRemoteFileSize(src)).then(function(size) {
		div.textContent = this.naturalWidth + '×' + this.naturalHeight + ' (' + formattedSize(size) + ')';
		if (!prefs.huge_image_warning || size <= prefs.huge_image_warning * 1024**2) return;
		addMessage('Warning: big cover size (' + formattedSize(size) + ')', 'ua-warning');
		div.style.backgroundColor = '#C00000';
	  }.bind(this)).catch(reason => { div.textContent = this.naturalWidth + '×' + this.naturalHeight });
	}
	child.src = src;
  } else div.textContent = child.src = '';
}

function getRemoteFileSize(url) {
  return new Promise(function(resolve, reject) {
	var imageSize, abort = GM_xmlhttpRequest({
	  method: 'GET', url: url, responseType: 'blob',
	  onreadystatechange: function(response) {
		if (imageSize || response.readyState < 2
			|| !/^Content-Length:\s*(\d+)\b/im.test(response.responseHeaders)
			|| !(imageSize = parseInt(RegExp.$1))) return;
		resolve(imageSize);
		abort.abort();
	  },
	  onload: function(response) { // fail-safe
		if (imageSize) return;
		if (response.readyState == 4 && response.status == 200) resolve(response.responseText.length);
			else reject(new Error('Image not accessible'));
	  },
	});
  });
}

function removeRedirect(uri) {
  return typeof uri != 'string' ? null : [
	'anonymz.com/?',
	'anonym.to/?',
	'nullrefer.com/?',
	'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 cleanupDescriptions(evt) {
  descriptionFields.forEach(function(ID) {
	if ((ref = evt.target.querySelector('textarea#' + ID)) == null || ref.textLength <= 0) return;
	var clean = ref.value
		.replace(/[ \t]*Vinyl rip by \[color=\S+\]\[\/color\]\s*/im, '')
		.replace(/\[u\]Lineage:\[\/u\]\n\n/i, '')
	for (var i = 0; i < 3; ++i) clean = clean.replace(/\s*\[(\w+)(?:=([^\[\]]*))?\]\[\/\1\]/gm, '');
	const drMatch = [
	  /(^| \| )DR(\d+)$\s+/m,
	  /(?:^| \| )DR(\d+)(?=$| \| )/gm,
	];
	var m = /\[hide=DR(\d+)?\]\[pre\]/i.exec(clean);
	//if (m != null && drMatch[0].test(clean) && RegExp.$2 == m[1]) clean = clean.replace(drMatch[0], '$1');
	if (m != null && drMatch[1].test(clean) && RegExp.$1 == m[1]) clean = clean.replace(drMatch[1], '');
	ref.value = clean.replace(/(?:[ \t]*\r?\n){3,}/g, '\n\n').replace(/[ \t]+$/gm, '').trim();
  });
  return true;
}

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

function notMonospaced(str) {
  return false; // TODO: reliable test for nonstandard with literals
}

function exec(fn) {
  let script = document.createElement('script');
  script.type = 'application/javascript';
  script.textContent = '(' + fn + ')();';
  document.body.appendChild(script); // run the script
  document.body.removeChild(script); // clean up
}

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) {
  if (typeof str != 'string') return null;
  if (/\b(\d{4}-\d+-\d+|\d{1,2}\/\d{1,2}\/\d{2})\b/.test(str)) return RegExp.$1; // US (clash with BE, IT)
  if (/\b(\d{1,2})\/(\d{1,2})\/(\d{4})\b/.test(str)) return RegExp.$2 + '/' + RegExp.$1 + '/' + RegExp.$3; // UK, IRL, FR
  if (/\b(\d{1,2})-(\d{1,2})-(\d{2})\b/.test(str)) return RegExp.$2 + '/' + RegExp.$1 + '/' + RegExp.$3; // NL
  if (/\b(\d{1,2})\.\s?(\d{1,2})\.\s?(\d{2}|\d{4})\b/.test(str)) return RegExp.$2 + '/' + RegExp.$1 + '/' + RegExp.$3; // AT, CH, DE, LU, CE
  if (/\b(\d{4})\.\s?(\d{1,2})\.\s?(\d{1,2})\b/.test(str)) return RegExp.$2 + '/' + RegExp.$3 + '/' + RegExp.$1; // 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 formattedSize(size) {
  return size < 1024**1 ? Math.round(size) + ' B'
	: size < 1024**2 ? (Math.round(size * 10 / 2**10) / 10) + ' KiB'
	: size < 1024**3 ? (Math.round(size * 100 / 2**20) / 100) + ' MiB'
	: size < 1024**4 ? (Math.round(size * 100 / 2**30) / 100) + ' GiB'
	: size < 1024**5 ? (Math.round(size * 100 / 2**40) / 100) + ' TiB'
	: (Math.round(size * 100 / 2**50) / 100) + ' PiB';
}

function testImageUrl(url) {
  if (!urlParser.test(url)) return Promise.reject('not an image');
  if (['png', 'jpg', 'jpeg', 'gif', 'bmp'].some(function(ext) {
	return url.toLowerCase().endsWith('.'.concat(ext));
  })) return Promise.resolve(url); // weak quick test
  return new Promise(function(resolve, reject) {
	var img = new Image();
	img.onload = function() { resolve(this.src) };
	img.onerror = img.onabort = img.ontimeout = error => { reject(url.concat(' not valid image')) };
	img.src = url;
  });
}
function testImageUrls(urls) {
  return Array.isArray(urls) ? Promise.all(urls.map(testImageUrl)) : Promise.reject('URLs not an array');
}

function uaInsert(evt) {
  if (evt instanceof DragEvent && evt.target.textLength > 0) return false;
  /*if (isFirefox || !evt.target.ctrlKey) */evt.target.value = '';
  if (!(prefs.autfill_delay > 0)) return true;
  autofill = true;
  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.textLength <= 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.textLength % tl != 0) return true;
  var l = evt.target.textLength / 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 imageClear(evt) {
  evt.target.value = '';
  coverPreview(evt.target, null);
}

function imageDropHandler(evt) { return imageDataHandler(evt, evt.dataTransfer) }
function imagePasteHandler(evt) { return imageDataHandler(evt, evt.clipboardData) }
function imageDataHandler(evt, data) {
  if (!data) return true;
  if (data.files.length > 0 && data.files[0].type.toLowerCase().startsWith('image/')) {
	evt.preventDefault();
	evt.stopPropagation();
	evt.target.disabled = true;
	if (evt.target.hTimer) {
	  clearTimeout(evt.target.hTimer);
	  delete evt.target.hTimer;
	}
	evt.target.style.backgroundColor = '#800000';
	let size = data.files[0].size;
	upload2PTPIMG([data.files[0]]).then(function(urls) {
	  evt.target.value = urls[0];
	  evt.target.style.backgroundColor = '#004000';
	  evt.target.hTimer = setTimeout(function() {
		evt.target.style.backgroundColor = null;
		delete evt.target.hTimer;
	  }, 10000);
	  coverPreview(evt.target, urls[0], size);
	}).catch(function(error) {
	  evt.target.style.backgroundColor = null;
	  imageClear(evt);
	  alert(error);
	}).then(function() { evt.target.disabled = false });
	return false;
  } else if (data.items.length > 0) {
	testImageUrl((data.getData('text/uri-list') || data.getData('text/plain')).split(/\r?\n/)[0]).then(function(url) {
	  evt.preventDefault();
	  evt.stopPropagation();
	  evt.target.value = url;
	  coverPreview(evt.target, url);
	  if (prefs.auto_rehost_cover && !url.toLowerCase().startsWith(imghostOrigin)) {
		/*if (rehostItBtn != null) rehostItBtn.click(); else */{
		  evt.target.disabled = true;
		  rehost2PTPIMG([url])
			.then(function(urls) { if (urls.length > 0) evt.target.value = urls[0] })
			.catch(e => { alert(e) })
			.then(function() { evt.target.disabled = false });
		  return false;
		}
	  }
	}).catch(e => { console.warn(e) });
  }
}

function descDropHandler(evt) {
  if (evt.dataTransfer == null || evt.shiftKey) return true;
  if (evt.dataTransfer.files.length > 0) {
	evt.preventDefault();
	evt.stopPropagation();
	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) {
			var isDR = file.name.toLowerCase().endsWith('foo_dr.txt') && /^Official DR value:\s*DR(\d+)\b/im.test(text);
			if (isDR) var DR = parseInt(RegExp.$1);
			var tag = isDR || file.name.toLowerCase().endsWith('.nfo') ? 'pre' : 'code';
			var php = isDR ? '[hide=DR' + RegExp.$1 + '][' + tag + ']' + text + '[/' + tag + '][/hide]'
				: '[hide=' + file.name + '][' + tag + ']' + text + '[/' + tag + '][/hide]';
			if (evt.target.textLength <= 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.concat(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.concat(RegExp.$1, '[code]', text, '[/code]', RegExp.$2, RegExp.rightContext);
			} else evt.target.value += '\n\n'.concat(php);
		  }).catch(function(e) { alert(e) }).then(function() {
			if (!evt.target.style.background) evt.target.disabled = false;
		  });
		  break;
		case 'image/png':
		case 'image/jpeg':
		case 'image/gif':
		case 'image/bmp':
		//case 'image/webp':
		//case 'image/svg+xml':
		  images.push(file);
		  break;
	  }
	});
	if (images.length > 0) {
	  evt.target.disabled = true;
	  evt.target.style.background = '#FF000040 no-repeat center center url(' + ulImgData +')';
	  //evt.target.style.background = '#FF000040 no-repeat center center url(https://svgshare.com/i/H16.svg)';
	  upload2PTPIMG(images).then(urlHandler.bind({ tag: 'img' })).catch(error => { alert(error) }).then(function() {
		evt.target.style.background = null;
		evt.target.disabled = false;
	  });
	}
  } else if (evt.dataTransfer.items.length > 0) {
	evt.preventDefault();
	evt.stopPropagation();
	let content = evt.dataTransfer.getData('text/uri-list');
	if (content) {
	  content = content.split(/\r?\n/);
	  testImageUrls(content).then(function(urls) {
		if (prefs.auto_rehost_cover) {
		  evt.target.disabled = true;
		  rehost2PTPIMG(urls).then(urlHandler.bind({ tag: 'img' })).catch(e => { alert(e) }).then(function() {
			evt.target.disabled = false;
		  });
		} else urlHandler.bind({ tag: 'img' })(content);
	  }).catch(function(e) {
		let as = domParser.parseFromString(evt.dataTransfer.getData('text/html'), 'text/html').body.querySelectorAll('a');
		urlHandler.bind({ tag: 'url', titles: Array.from(as).map(a => a.textContent.trim()) })(content);
	  });
	} else if (content = evt.dataTransfer.getData('text/html')) {
	  textHandler(html2php(domParser.parseFromString(content, 'text/html')).collapseGaps());
	} else if (content = evt.dataTransfer.getData('text/plain')) {
	  textHandler(content);
	}
  }

  function urlHandler(urls) {
	const rx = new RegExp('\\[' + this.tag + '\\]\\[\\/' + this.tag + '\\]', 'i');
	urls.forEach(function(url, ndx) {
	  if (url.length <= 0 || !urlParser.test(urls)) return;
	  var php = '[' + this.tag;
	  php += Array.isArray(this.titles) && this.titles[ndx] ? '=' + url + ']' + this.titles[ndx] : ']' + url;
	  php += '[/' + this.tag +']';
	  if (evt.target.textLength <= 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 (rx.test(evt.target.value)) {
		evt.target.value = RegExp.leftContext + php + RegExp.rightContext;
	  } else evt.target.value += '\n\n'.concat(php);
	}.bind(this));
  }
  function textHandler(php) {
	if (evt.target.textLength <= 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 evt.target.value += '\n\n'.concat(php);
  }
}

function descPasteHandler(evt) {
  if (evt.clipboardData == null || evt.clipboardData.items.length <= 0) return true;
  var content = evt.clipboardData.getData('text/html');
  if (!content) return true;
  evt.preventDefault();
  evt.stopPropagation();
  content = html2php(domParser.parseFromString(content, 'text/html')).collapseGaps();
  var selStart = evt.target.selectionStart;
  evt.target.value = evt.target.value.slice(0, evt.target.selectionStart)
	.concat(content, evt.target.value.slice(evt.target.selectionEnd));
  evt.target.setSelectionRange(selStart + content.length, selStart + content.length);
}

function rehostDropHandler(evt) {
  if (evt.dataTransfer == null || evt.dataTransfer.files.length <= 0) return;
  var image = document.getElementById('image') || document.querySelector('input[name="image"]');
  if (image == null) return;
  evt.preventDefault();
  evt.stopPropagation();
  evt.currentTarget.disabled = true;
  if (evt.currentTarget.hTimer) {
	clearTimeout(evt.currentTarget.hTimer);
	delete evt.currentTarget.hTimer;
  }
  evt.currentTarget.value = 'Uploading...';
  evt.currentTarget.style.backgroundColor = '#A00000';
  var evtSrc = evt.currentTarget;
  upload2PTPIMG(evt.dataTransfer.files).then(function(results) {
	if (urlParser.test(results[0])) {
	  image.value = results[0];
	  evtSrc.style.backgroundColor = '#008000';
	  evtSrc.hTimer = setTimeout(function() {
		evtSrc.style.backgroundColor = null;
		delete evtSrc.hTimer;
	  }, 10000);
	  coverPreview(image, results[0], evt.dataTransfer.files[0].size);
	} else evtSrc.style.backgroundColor = null;
  }).catch(function(error) {
	evtSrc.style.backgroundColor = null;
	alert(error);
  }).then(function() {
	evtSrc.value = evtSrc.dataset.caption;
	evtSrc.disabled = false;
  });
}

function clear0(evt) { evt.target.value = '' }
function clear1(evt) { if (evt.buttons == 4) clear0(evt) }
function voidDragHandler(evt) { evt.preventDefault() }

function upload2PTPIMG(files, elem) {
  var frs = Array.from(files).filter(function(file) {
	return file instanceof File && ['jpeg', 'png', 'gif', 'bmp'].some(ext => file.type == 'image/' + ext);
  }).map(file => new Promise(function(resolve, reject) {
	var reader = new FileReader();
	reader.onload = function() { resolve({ file: file, data: reader.result }) };
	reader.onerror = reader.onabort = reader.ontimeout = error => { reject('FileReader error (' + file.name + ')') };
	reader.readAsBinaryString(file);
  }));
  return frs.length > 0 ? getPTPIMGapiKey().then(apiKey => Promise.all(frs).then(images => new Promise(function(resolve, reject) {
	const boundary = '------NN-GGn-PTPIMG';
	var data = '--' + boundary + '\r\n';
	images.forEach(function(image, ndx) {
	  data += 'Content-Disposition: form-data; name="file-upload[' + ndx +
		']"; filename="' + image.file.name.toASCII() + '"\r\n';
	  data += 'Content-Type: ' + image.file.type + '\r\n\r\n';
	  data += image.data + '\r\n';
	  data += '--' + boundary + '\r\n';
	});
	data += 'Content-Disposition: form-data; name="api_key"\r\n\r\n';
	data += apiKey + '\r\n';
	data += '--' + boundary + '--\r\n';
	GM_xmlhttpRequest({
	  method: 'POST',
	  url: imghostOrigin + '/upload.php',
	  responseType: 'json',
	  headers: {
		'Content-Type': 'multipart/form-data; boundary=' + boundary,
		'Content-Length': data.length,
	  },
	  data: data,
	  binary: true,
	  onload: function(response) {
		if (response.readyState == 4 && response.status == 200) {
		  resolve(response.response.map(item => imghostOrigin + '/' + item.code + '.' + item.ext));
		} else {
		  reject(`Response error ${response.readyState}/${response.status} (${response.statusText})`);
		}
	  },
	  onprogress: elem instanceof HTMLInputElement ?
	  	progress => { elem.value = 'Uploading... (' + progress.position + '%)' } : undefined,
	  onerror: function(error) {
		reject(new Error(`XHR readyState=${error.readyState}, status=${error.status} (${error.error})`));
	  },
	  onabort: abort => { reject('XHR: abort') },
	  ontimeout: timeout => { reject('XHR: timeout') },
	});
  }))) : Promise.reject('Nothing to upload');
}

function rehost2PTPIMG(urls) {
  return testImageUrls(urls).then(urls => getPTPIMGapiKey().then(apiKey => new Promise(function(resolve, reject) {
	const boundary = '------NN-GGn-PTPIMG';
	const dcTest = /^https?:\/\/(?:\w+\.)?discogs\.com\//i;
	var data = '--' + boundary + '\r\n';
	data += 'Content-Disposition: form-data; name="link-upload"\r\n\r\n';
	data += urls.map(url => dcTest.test(url.trim()) ? 'https://reho.st/' + url.trim() : url.trim()).join('\r\n') + '\r\n';
	data += '--' + boundary + '\r\n';
	data += 'Content-Disposition: form-data; name="api_key"\r\n\r\n';
	data += apiKey + '\r\n';
	data += '--' + boundary + '--\r\n';
	GM_xmlhttpRequest({
	  method: 'POST',
	  url: imghostOrigin + '/upload.php',
	  responseType: 'json',
	  headers: {
		'Content-type': 'multipart/form-data; boundary=' + boundary,
		'Content-Length': data.length,
	  },
	  data: data,
	  onload: function(response) {
		if (response.readyState == 4 && response.status == 200) {
		  resolve(response.response.map(item => imghostOrigin + '/' + item.code + '.' + item.ext));
		} else {
		  reject(`Response error ${response.readyState}/${response.status} (${response.statusText})`);
		}
	  },
	  onerror: function(error) {
		reject(new Error(`XHR readyState=${error.readyState}, status=${error.status} (${error.error})`));
	  },
	  onabort: abort => { reject('XHR: abort') },
	  ontimeout: timeout => { reject('XHR: timeout') },
	});
  })));
}

function getPTPIMGapiKey() {
  try {
	var apiKey = prefs.ptpimg_api_key || JSON.parse(window.localStorage.ptpimg_it).api_key;
	if (apiKey) return Promise.resolve(apiKey);
  } catch(e) { console.warn(e) }
  return new Promise((resolve, reject) => GM_xmlhttpRequest({
	method: 'GET',
	url: imghostOrigin,
	responseType: 'document',
	onload: function(response) {
	  if (response.readyState == 4 && response.status == 200) {
		apiKey = domParser.parseFromString(response.responseText, 'text/html').getElementById('api_key');
		if (apiKey != null && apiKey.value) {
		  GM_setValue('ptpimg_api_key', prefs.ptpimg_api_key = apiKey.value);
		  resolve(apiKey.value);
		  alert(`Your PTPIMG API key ${apiKey.value} was successfully saved`);
		} else reject(`PTPIMG API key isn\'t configured.
Please login to ${imghostOrigin}/ and repeat the action

If you don\'t have PTPIMG account, to avoid this warning in
future consider to set auto_rehost_cover to 0 in preferences
(Tampermonkey menu -> right click to Upload Assistant -> Storage tab)`);
	  } else reject(new Error('XHR readyState=' + response.readyState +
		', status=' + response.status + ' (' + response.error + ')'));
	},
	onerror: function(error) {
	  reject(new Error(`XHR readyState=${error.readyState}, status=${error.status} (${error.error})`));
	},
	onabort: abort => { reject('XHR: abort') },
	ontimeout: timeout => { reject('XHR: timeout') },
  }));
}

function dcFmtToGazelle(format) {
  if (/^(?:CD|CDi|CDr|HDCD)\b/.test(format)) return 'CD';
  if (/\b(?:File|AAC|AIFC|AIFF|ALAC|AMR|APE|DFF|DSD|FLAC|MP2|MP3|ogg-vorbis|Opus|SHN|WAV|WavPack|WMA|WMV)\b/.test(format)) return 'WEB';
  if (/^(?:Vinyl|LP|\d+(?:\.\d+)?\s*")$/.test(format)) return 'Vinyl';
  if (/\b(?:SACD|Hybrid)\b/.test(format)) return 'SACD';
  if (/^(?:Blu[ \-]?ray)\b/i.test(format)) return 'Blu-Ray';
  if (/^(?:DVD|HD\s+DVD)/.test(format)) return 'DVD';
  if (/^(?:Cassette|Microcassette)$/i.test(format)) return 'Cassette';
  if (/^(?:DAT)$/.test(format)) return 'DAT';
  if (/^(?:Soundboard)$/i.test(format)) return 'Soundboard';
  //if (/^(?:Memory\s+Stick)$/i.test(format)) return ??
  return null;
}