☰

YoutubePlayBack

extension for saving and setting last progress in Youtube Videos

当前为 2024-02-14 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @license MIT
  3. // @name         YoutubePlayBack
  4. // @namespace    http://tampermonkey.net/
  5. // @version      1.1
  6. // @description  extension for saving and setting last progress in Youtube Videos
  7. // @author       Costin Alexandru Sandu
  8. // @match        https://www.youtube.com/watch*
  9. // @icon         https://www.google.com/s2/favicons?sz=64&domain=tampermonkey.net
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. (function() {
  14.    	'strict'
  15.  
  16. 	var savedProgressAlreadySet = false
  17.  
  18.   	function executeFnInPageContext (fn) {
  19.       const fnStringified = fn.toString()
  20.     	return window.eval('('+fnStringified+')'+'()')
  21.     }
  22.  
  23.   	function getVideoCurrentTime () {
  24.       const currentTime = executeFnInPageContext(() => {
  25.       	const player = document.querySelector('#movie_player')
  26. 				return player.getCurrentTime()
  27.       })
  28.       return currentTime
  29.     }
  30.  
  31.   	function getVideoId () {
  32.     	const id = executeFnInPageContext(() => {
  33.       	const player = document.querySelector('#movie_player')
  34. 				return player.getVideoData().video_id
  35.       })
  36.       return id
  37.     }
  38.  
  39.   	function playerExists () {
  40.      	const exists = executeFnInPageContext(() => {
  41.       	const player = document.querySelector('#movie_player')
  42. 				return Boolean(player)
  43.       })
  44.       return exists
  45.     }
  46.  
  47.   	function setVideoProgress (progress) {
  48.       window.eval('var progress ='+ progress)
  49.      	executeFnInPageContext(() => {
  50.       	const player = document.querySelector('#movie_player')
  51. 		player.seekTo(window.progress)
  52.       })
  53.       window.eval('delete progress')
  54.     }
  55.  
  56.   	function saveVideoProgress() {
  57.       const videoProgress = getVideoCurrentTime()
  58.       const videoId = getVideoId()
  59.       window.localStorage.setItem(videoId, videoProgress)
  60.     }
  61.  
  62.   	function getSavedVideoProgress() {
  63.       const videoId = getVideoId()
  64.       const savedVideoProgress = window.localStorage.getItem(videoId)
  65.  
  66.       return savedVideoProgress
  67.     }
  68.  
  69.   	function logError(message) {
  70.      	console.log('[YoutubeRememberLastTime] '+message)
  71.     }
  72.     function setSavedProgress () {
  73.         const savedProgress = getSavedVideoProgress();
  74.         setVideoProgress(savedProgress)
  75.         savedProgressAlreadySet = true
  76.     }
  77.  
  78.     function isReadyToSetSavedProgress () {
  79.         return !savedProgressAlreadySet && playerExists() && getSavedVideoProgress()
  80.     }
  81.  
  82.   	function main() {
  83.       if (isReadyToSetSavedProgress()) {
  84.           setSavedProgress()
  85.       }
  86.       saveVideoProgress()
  87.     }
  88.  
  89.   	function initialize() {
  90.         if (isReadyToSetSavedProgress()) {
  91.             setSavedProgress()
  92.         }
  93.     	setInterval(main, 1500)
  94.     }
  95.  
  96.   	initialize()
  97. })();