A script to deal with the automatic skipping of fixed length intros/outros for your favourite Youtube channels.
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// ==UserScript==
// @name Youtube Automatic BS Skip
// @namespace https://greasyfork.org/en/scripts/392459-youtube-automatic-bs-skip
// @source https://github.com/JustDaile/
// @version 2.9.10
// @description A script to deal with the automatic skipping of fixed length intros/outros for your favourite Youtube channels.
// @author Daile Alimo
// @license MIT
// @match https://www.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant GM.setValue
// @grant GM.getValue
// @grant GM.addStyle
// ==/UserScript==
//
/* globals $ whenReady trustedTypes */
const app = "YouTube Automatic BS Skip";
const version = '2.9.10';
const debug = false;
// Chrome: bypass content security policy, preventing innerHTML being set.
// https://stackoverflow.com/questions/61964265/getting-error-this-document-requires-trustedhtml-assignment-in-chrome
// Detect if browser supports trustedTypes by checking if its defined.
// If not defined mock the createHTML method to negate the need to make additional updates to the codebase depending on if trustedTypes is used or not.
let escapeHTMLPolicy;
if (typeof trustedTypes !== "undefined") {
escapeHTMLPolicy = trustedTypes.createPolicy("forceInner", {
createHTML: (to_escape) => to_escape
})
} else {
escapeHTMLPolicy = {
createHTML: (to_escape) => to_escape
};
}
// Elements
const yabssInputIdPrefix = "yabbs-control";
const yabssModalIdPrefix = "yabbs-modal";
const yabssProgressbarIdPrefix = "yabss-pgbar";
const yabssIntroInputId = "yabbs-intro";
const yabssOutroInputId = "yabbs-outro";
const yabssChannelTxtContainerId = "yabbs-channel";
// Actions
const pauseOnOutro = "pause-on-outro";
const nextOnOutro = "next-on-outro";
const instantNextOnFinish = "instant-next";
const apply_ID = "apply";
// logs to console if debug is true
const log = function() {
if (debug) {
console.log(...arguments);
}
};
log({
app,
version
});
// updateControls updates only the elements in the modal controls, in which the values are set when function is invoked.
const updateControls = ({introValue, outroValue, channelName, actions}) => {
log('update controls');
if (introValue !== undefined) {
document.getElementById(yabssIntroInputId).value = introValue;
}
if (outroValue !== undefined) {
document.getElementById(yabssOutroInputId).value = outroValue;
}
if (channelName !== undefined) {
document.getElementById(yabssChannelTxtContainerId).innerText = channelName;
}
if (actions !== undefined) {
actions.outro ? document.getElementById(nextOnOutro).checked = true : document.getElementById(pauseOnOutro).checked = true;
actions.onFinish ? document.getElementById(instantNextOnFinish).checked = true : document.getElementById(instantNextOnFinish).checked = false;
}
document.getElementById(yabssModalIdPrefix).classList.remove('show');
};
// asyncAwaitElements returns each of the selectors in a object with the provided aliases as keys to the found DOM element.
const asyncAwaitElements = async (selectors, aliases, attempts = 5) => {
return new Promise((resolve, reject) => {
const id = setInterval(_ => {
let ready = {};
let found = 0;
let count = 0;
for(let i in selectors){
let $sel = document.querySelector(selectors[i]);
if ($sel) {
let index = aliases[i] ? aliases[i]: i;
log(`found selector ${selectors[i]}`);
ready[index] = $sel;
found++;
}
}
if (found === selectors.length) {
log("all selectors found");
clearInterval(id);
return resolve(ready);
}
if (count > attempts - 1) {
reject(`reached max allowed attempts ${count}`);
}
count++
}, 100)
})
}
(function(yabssApp) {
"use strict";
// dispose function provided by yabssApp
var dispose;
const ytapp = document.querySelector('body > ytd-app');
// Quick channel loading - Hook into Youtube's events.
// Best determined event for bootstrapping the applications lifecycle.
// YouTube calls yt-page-data-fetched when page when page/channel information has been loaded, but way sooner than it takes to update the UI.
ytapp.addEventListener("yt-page-data-fetched", async (e) => {
const page = e.detail.pageData.page; // browse, watch
log(page);
if (page !== 'watch') { // ignore any pages that are not 'watch'
return
}
dispose = await yabssApp(e.detail.pageData.playerResponse.microformat.playerMicroformatRenderer.ownerChannelName);
});
// Dispose all event listeners whenever page navigation starts
// When next video is loading YouTube resets video playback time to zero.
// Since the binded timeupdate event is still running this causes last set intro to be skipped,
// before the next video has loaded.
// To get around this behaviour disposing all events listeners as soon as possible is best way to prevent this behaviour.
ytapp.addEventListener("yt-navigate-start", (e) => {
if (dispose) {
dispose();
dispose = null;
}
});
})(async (channelName) => {
log(`binding to ${channelName}`);
var paused = false;
var continued = false;
const { stream, controlContainer, progressbar } = await asyncAwaitElements([".video-stream", ".ytp-right-controls", ".ytp-progress-bar"], ["stream", "controlContainer", "progressbar"])
const controls = document.querySelector(yabssInputIdPrefix);
if (controls == null) {
log('adding modal toggle to video control panel.');
controlContainer.insertBefore(videoControlButton, controlContainer.firstChild);
}
// Pull channel settings
var storeId = channelName.split(" ").join("_");
var introTargetId = storeId + "-intro";
var outroTargetId = storeId + "-outro";
var outroActionId = storeId + "-outro-action";
var finishedActionId = storeId + "-finished-action";
var loadedIntroSetInSeconds = await GM.getValue(introTargetId, 0);
var loadedOutroSetInSeconds = await GM.getValue(outroTargetId, 0);
var playNextOnOutro = await GM.getValue(outroActionId, true);
var instantNextOnFinished = await GM.getValue(finishedActionId, true);
log('channel settings', {
channelName,
loadedIntroSetInSeconds,
loadedOutroSetInSeconds,
playNextOnOutro,
instantNextOnFinished
});
// Setup & update progressbars
var introBar = document.getElementById(`${yabssProgressbarIdPrefix}-intro`)
if (introBar == null) {
introBar = document.createElement('div')
introBar.id = `${yabssProgressbarIdPrefix}-intro`
introBar.classList.add('ytp-load-progress')
introBar.style.left = "0%"
introBar.style.transform = 'scaleX(0)'
introBar.style.backgroundColor = "green"
progressbar.insertBefore(introBar, progressbar.firstChild);
}
var outroBar = document.getElementById(`${yabssProgressbarIdPrefix}-outro`)
if (outroBar == null) {
outroBar = document.createElement('div')
outroBar.id = `${yabssProgressbarIdPrefix}-outro`
outroBar.classList.add('ytp-load-progress')
outroBar.style.left = '100%'
outroBar.style.transform = 'scaleX(0)'
outroBar.style.backgroundColor = "green"
progressbar.insertBefore(outroBar, progressbar.firstChild);
}
const updateProgressbars = (duration) => {
var introFraction = loadedIntroSetInSeconds / duration;
introBar.style.transform = `scaleX(${introFraction})`
var outroFraction = loadedOutroSetInSeconds / duration;
outroBar.style.left = `${100 - (outroFraction * 100)}%`
outroBar.style.transform = `scaleX(${outroFraction})`
}
updateControls({ channelName, introValue: loadedIntroSetInSeconds, outroValue: loadedOutroSetInSeconds, actions: { outro: playNextOnOutro, onFinish: instantNextOnFinished } });
const updateChannelSettings = _ => {
loadedIntroSetInSeconds = document.getElementById(yabssIntroInputId).value;
loadedOutroSetInSeconds = document.getElementById(yabssOutroInputId).value;
GM.setValue(introTargetId, loadedIntroSetInSeconds);
GM.setValue(outroTargetId, loadedOutroSetInSeconds);
updateControls({
introValue: loadedIntroSetInSeconds,
outroValue: loadedOutroSetInSeconds
});
}
document.getElementById(apply_ID).addEventListener('click', updateChannelSettings);
const setPauseOnOutro = _ => {
log('pause on outro changed');
GM.setValue(outroActionId, false);
playNextOnOutro=false
}
document.getElementById(pauseOnOutro).addEventListener('change', setPauseOnOutro);
const setNextOnOutro = _ => {
log('next on outro changed');
GM.setValue(outroActionId, true);
playNextOnOutro=true
}
document.getElementById(nextOnOutro).addEventListener('change', setNextOnOutro);
const setInstantNextOnFinish = e => {
log('instant next on finished changed');
instantNextOnFinished=e.target.checked;
GM.setValue(finishedActionId, instantNextOnFinished);
}
document.getElementById(instantNextOnFinish).addEventListener('change', setInstantNextOnFinish);
// Start watching timeupdates
const onTimeUpdate = e => {
const outroReached = e.target.currentTime >= e.target.duration - loadedOutroSetInSeconds
updateProgressbars(e.target.duration);
// use pause to prevent timeupdate after script has clicked pause button.
// There is a slight delay from when pause button is clicked, to when the timeupdates are stopped.
// So this escape prevents further execution.
if (paused) {
return
}
// If current time less than intro, skip past intro.
if(e.target.currentTime < loadedIntroSetInSeconds) {
log(`intro skipped ${loadedIntroSetInSeconds}`);
e.target.currentTime = loadedIntroSetInSeconds;
}
// If current time greater or equal to outro, click next button or pause the stream.
if(outroReached){
log('outro reached');
if (playNextOnOutro) {
log('auto-click next');
document.querySelector('.ytp-next-button').click();
} else if (!continued) {
log('auto-click pause');
document.querySelector('.ytp-play-button').click();
paused=true;
}
}
}
stream.addEventListener('timeupdate', onTimeUpdate);
const onPlay = e => {
log(`onPlay`);
// continued is when outro is reached and playback is resumed by the user.
// However the user may skip back before pressing play.
// So when resuming continued must first detect if it is still during the outro, if so playback will continue to the end of the video normally.
continued = e.target.currentTime >= e.target.duration - loadedOutroSetInSeconds;
// unpause timeupdates.
paused = false;
}
stream.addEventListener('play', onPlay);
return _ => {
log(`disposing event listeners`);
stream.removeEventListener('timeupdate', onTimeUpdate);
stream.removeEventListener('play', onPlay);
document.getElementById(apply_ID).removeEventListener('click', updateChannelSettings);
document.getElementById(pauseOnOutro).removeEventListener('change', setPauseOnOutro);
document.getElementById(nextOnOutro).removeEventListener('change', setNextOnOutro);
document.getElementById(instantNextOnFinish).removeEventListener('change', setInstantNextOnFinish);
}
})
// videoControlButton is the button that is displayed within the video controls.
// click it will bring up the settings/controls modal.
var videoControlButton = document.createElement('button')
videoControlButton.innerHTML = escapeHTMLPolicy.createHTML(`
<div class="ytp-autonav-toggle-button-container">
<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path fill="white" d="M19 9l1.25-2.75L23 5l-2.75-1.25L19 1l-1.25 2.75L15 5l2.75 1.25L19 9zm-7.5.5L9 4 6.5 9.5 1 12l5.5 2.5L9 20l2.5-5.5L17 12l-5.5-2.5zM19 15l-1.25 2.75L15 19l2.75 1.25L19 23l1.25-2.75L23 19l-2.75-1.25L19 15z"/></svg>
</div>`);
videoControlButton.id = yabssInputIdPrefix;
videoControlButton.classList.add('ytp-button');
videoControlButton.setAttribute('title', app);
videoControlButton.setAttribute('aria-label', app);
log('created yabss button', videoControlButton);
// yabssPopupControls is the settings/controls modal that allows users to update settings for the channel.
var yabssPopupControls = document.createElement('div');
yabssPopupControls.id = yabssModalIdPrefix;
yabssPopupControls.innerHTML = escapeHTMLPolicy.createHTML(`
<div id="${yabssModalIdPrefix}-escape"></div>
<div id="${yabssModalIdPrefix}-content">
<div id="${yabssChannelTxtContainerId}">Loading Channel</div>
<h2 id="${yabssInputIdPrefix}-title" class="d-flex justify-space-between">
YouTube Automatic BS Skip ${version}
<a href="https://www.buymeacoffee.com/JustDai" target="_blank">
<svg xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" height="24" viewBox="0 0 24 24" width="24">
<g>
<path d="M0,0h24v24H0V0z" fill="none"></path>
</g>
<g fill="var(--yt-live-chat-primary-text-color)">
<path d="M18.5,3H6C4.9,3,4,3.9,4,5v5.71c0,3.83,2.95,7.18,6.78,7.29c3.96,0.12,7.22-3.06,7.22-7v-1h0.5c1.93,0,3.5-1.57,3.5-3.5 S20.43,3,18.5,3z M16,5v3H6V5H16z M18.5,8H18V5h0.5C19.33,5,20,5.67,20,6.5S19.33,8,18.5,8z M4,19h16v2H4V19z"></path>
</g>
</svg>
</a>
</h2>
<div id="${yabssInputIdPrefix}-control-wrapper">
<div class="w-100 d-flex justify-space-around align-center">
<label for="${yabssIntroInputId}">Intro</label>
<input type="number" min="0" id="${yabssIntroInputId}" placeholder="unset" class="input">
</div>
<div class="w-100 d-flex justify-space-around align-center">
<label for="${yabssOutroInputId}">Outro</label>
<input type="number" min="0" id="${yabssOutroInputId}" placeholder="unset" class="input">
</div>
<div class="pa">
<label for="${yabssInputIdPrefix}-outro-action-group">Action on outro:</label>
<fieldset id="${yabssInputIdPrefix}-outro-action-group" class="d-flex">
<div>
<label for="${pauseOnOutro}">Pause Video</label>
<input type="radio" name="outro-action-group" id="${pauseOnOutro}">
</div>
<div>
<label for="${nextOnOutro}">Play Next Video</label>
<input type="radio" name="outro-action-group" id="${nextOnOutro}" checked="checked">
</div>
</fieldset>
</div>
<div class="py" >
<label for="${yabssInputIdPrefix}-ended-action-group">Action on finish:</label>
<fieldset id="${yabssInputIdPrefix}-ended-action-group" class="d-flex">
<div style="margin: auto; text-align: right;">
<label for="${instantNextOnFinish}">Instantly play next</label>
<input type="checkbox" name="outro-action-group" id="${instantNextOnFinish}">
</div>
</fieldset>
</div>
</div>
<tp-yt-paper-button id="${apply_ID}" class="style-scope py ytd-video-secondary-info-renderer d-flex justify-center align-center" style-target="host" role="button" elevation="3" aria-disabled="false">${apply_ID}</tp-yt-paper-button>
</div>`);
document.body.insertAdjacentElement('beforeend', yabssPopupControls);
// toggleModalEventListener display or hide the yabssPopupControls.
const toggleModalEventListener = _ => {
log("toggling yabss modal");
yabssPopupControls.classList.toggle("show");
}
// Listen to user clicks on the video control button.
videoControlButton.addEventListener('click', toggleModalEventListener);
// Listen to user clicks on modal escape area
document.querySelector(`#${yabssModalIdPrefix}-escape`).addEventListener('click', toggleModalEventListener);
// Write the CSS rules to the DOM
GM.addStyle(`
#${yabssModalIdPrefix}-escape {
position: fixed;
left: 0;
top: 0;
width: 100vw;
height: 100vh;
z-index: 1000;
}
#${yabssModalIdPrefix} {
display: none;
position: fixed;
left: 0;
top: 0;
width: 100vw;
height: 100vh;
z-index: 999;
background: rgba(0,0,0,.8);
}
#${yabssModalIdPrefix}.show {
display: flex;
}
#${yabssModalIdPrefix}-content {
margin: auto;
width: 30%;
height: auto;
background-color: var(--yt-live-chat-action-panel-background-color);
color: var(--yt-live-chat-primary-text-color);
border-radius: 6px 6px 6px;
border: 1px solid var(--yt-live-chat-enabled-send-button-color);
padding: 15px;
z-index: 1001;
box-shadow: 1em 1em 3em black;
}
#${yabssIntroInputId},#${yabssOutroInputId} {
font-size: 1.2em;
padding: .4em;
border-radius: .5em;
border: 1px solid var(--yt-live-chat-secondary-text-color);
width: 80%;
}
#${apply_ID} {
position: relative;
border: 1px solid var(--yt-live-chat-secondary-text-color);
transition: background-color .2s ease-in-out
}
#${apply_ID}:hover {
background-color: var(--yt-spec-10-percent-layer);
}
#${yabssInputIdPrefix} {
height: 100%;
padding: 0;
margin: 0;
bottom: 45%;
position: relative;
}
#${yabssInputIdPrefix} svg {
position: relative;
top: 20%;
left: 20%;
}
#${yabssInputIdPrefix}-panel {
margin-right: 1em;
vertical-align:top
}
#${yabssInputIdPrefix} > * {
display: inline-block;
max-height: 100%;
}
#${yabssInputIdPrefix}-title {
padding: 2px;
}
#${yabssInputIdPrefix}-outro-action-group {
padding: .5em;
}
#${yabssInputIdPrefix}-outro-action-group > div {
display: block;
margin: auto;
text-align-last: justify;
}
#${yabssInputIdPrefix}-control-wrapper > * {
padding-top: 1em;
}
#action-radios {
display: none;
}
#action-radios .actions {
padding-left: 2px;
text-align: left;
background-color: var(--yt-spec-base-background);
color: var(--yt-live-chat-secondary-text-color);
}
#${yabssIntroInputId},#${yabssOutroInputId} {
margin-right: 2px;
}
#${yabssChannelTxtContainerId} {
position: relative;
top: -3.5em;
margin-bottom: -1.5em;
font-size: 1.1em;
color: white;
}
.w-100 {
width: 100% !important;
}
.input {
padding: .2em;
}
.d-flex {
display: flex;
}
.justify-center {
justify-content: center;
}
.justify-space-around {
justify-content: space-around;
}
.justify-space-between {
justify-content: space-between;
}
.align-center {
align-items: center;
}
.pa {
padding: .5em;
}
.py {
padding: .5em 0em;
}
`);