AutoPlay next Playlist item in YouTube
// ==UserScript==
// @name YouTube Playlist AutoPlay
// @namespace https://github.com/crazyrabbit0
// @version 2.1.4
// @description AutoPlay next Playlist item in YouTube
// @author CrazyRabbit
// @match http://*.youtube.com/*
// @match https://*.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant none
// @license GPL-3.0-or-later; http://www.gnu.org/licenses/gpl-3.0.txt
// @copyright 2023+, CrazyRabbit (https://github.com/crazyrabbit0)
// @homepageURL https://github.com/crazyrabbit0/UserScripts
// @supportURL https://github.com/crazyrabbit0/UserScripts/issues/new?assignees=crazyrabbit0&labels=help+wanted&template=&title=YouTube%20Playlist%20AutoPlay%20-%20Issue
// @run-at document-start
// @noframes
// ==/UserScript==
(function() {
'use strict'
let elements = {
player: null,
next_video: null,
progress: null,
loop: null
}
let loaded = {
player: false,
progress: false
}
let loop = {
code: null,
value: null,
map: {
//'M21': '',
'M20': 'playlist',
'M13': 'video'
}
}
function play_next_video(player = elements.player) {
elements.next_video = document.querySelector('ytd-playlist-panel-video-renderer[selected] + ytd-playlist-panel-video-renderer > a')
if(player.classList.contains('ended-mode')) {
let has_video_loop = elements.loop.querySelector('path')?.getAttribute('d').substring(0, 3) === 'M13'
//let ads = document.querySelector('.video-ads')
if(!has_video_loop) {
elements.next_video?.click()
}
//console.log('video-ended')
}
else if(player.querySelector('.html5-ypc-title')?.innerText) {
elements.next_video?.click()
//console.log('video-cannot-start')
}
}
function reset_loop(progress = elements.progress) {
if(!progress.hasAttribute('hidden')) {
loop.code = elements.loop.querySelector('path')?.getAttribute('d').substring(0, 3)
loop.value = loop.code.replace(/M\d+/, function(match) { return loop.map[match] || '' })
//console.log('progress-started')
}
else {
switch (loop.value) {
case 'video':
elements.loop.click()
/* falls through */
case 'playlist':
setTimeout(function() { elements.loop.click() }, 1)
}
//console.log('progress-finished')
}
}
let loaded_check = setInterval(function() {
if(!loaded.player && elements.player && elements.next_video) {
loaded.player = true
play_next_video()
new MutationObserver(function(mutations) {
for(const mutation of mutations) {
play_next_video(mutation.target)
}
}).observe(elements.player, {
attributeFilter: [ "class" ]
})
}
else {
elements.player = document.querySelector('div#movie_player')
elements.next_video = document.querySelector('ytd-playlist-panel-video-renderer[selected] + ytd-playlist-panel-video-renderer > a')
}
if(!loaded.progress && elements.progress && elements.loop) {
loaded.progress = true
reset_loop()
new MutationObserver(function(mutations) {
for(const mutation of mutations) {
reset_loop(mutation.target)
}
}).observe(elements.progress, {
attributeFilter: [ "hidden" ]
})
}
else {
elements.progress = document.querySelector('yt-page-navigation-progress')
elements.loop = document.querySelector('ytd-playlist-loop-button-renderer button')
}
if(Object.values(loaded).every(Boolean)) {
clearInterval(loaded_check)
//console.log('all-elements-loaded')
}
}, 500)
})()