reset-youtube-settings.user.js

/*

MIT License

Copyright 2022 CY Fung

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

*/
// ==UserScript==
// @name         Reset YouTube Settings
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Due to YouTube making changes to its layout, some obsolete settings might remain and cause some problems to you. Use this to reset them.
// @author       CY Fung
// @supportURL   https://github.com/cyfung1031/userscript-supports
// @match        https://www.youtube.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant        GM_registerMenuCommand
// @grant        GM_addValueChangeListener
// @grant        unsafeWindow
// @grant        GM.setValue
// @grant        GM.deleteValue
// @license      MIT
// @require      https://cdnjs.cloudflare.com/ajax/libs/js-cookie/3.0.1/js.cookie.min.js#sha512=wT7uPE7tOP6w4o28u1DN775jYjHQApdBnib5Pho4RB0Pgd9y7eSkAV1BTqQydupYDB9GBhTcQQzyNMPMV3cAew==
// ==/UserScript==

/* global Cookies, GM_addValueChangeListener, GM_registerMenuCommand */

(function () {
  'use strict';
  let cb1 = null
  GM_registerMenuCommand('Reset YouTube Settings', function () {
    if (cb1) return
    cb1 = true

    const whitelist = [
      // cookies
      'PREF', 'SID', 'APISID', 'SAPISID', /^__Secure-\w+$/, 'SIDCC',
      // localstorage
      'yt-remote-device-id', 'yt-player-headers-readable',
      'ytidb::LAST_RESULT_ENTRY_KEY',
      'yt-remote-connected-devices', 'yt-player-bandwidth',
      'userscript-tabview-settings', // Tabview Youtube
      /^[\-\w]*h264ify[\-\w]+$/ // h264ify or enhanced-h264ify
    ];

    const cookiesObject = Cookies.get();
    let keysCookies = Object.keys(cookiesObject)
    for (const key of keysCookies) {
      let value = cookiesObject[key];
      if (typeof value !== 'string') continue;
      if (whitelist.includes(key)) continue;
      let isSkip = false;
      for (const s of whitelist) {
        if (isSkip) break;
        if (typeof s === 'object' && s.constructor.name === 'RegExp') {
          if (s.test(key)) isSkip = true;
        }
      }
      if (isSkip) continue;
      Cookies.remove(key);
      Cookies.remove(key, { domain: 'youtube.com' }); // most youtube cookies use youtube.com
      Cookies.remove(key, { domain: 'www.youtube.com' }); // some cookies such as 'WEVNSM' and 'WNMCID' use www.youtube.com
      Cookies.remove(key, { secure: true });
      Cookies.remove(key, { domain: 'youtube.com',  secure: true  }); // most youtube cookies use youtube.com
      Cookies.remove(key, { domain: 'www.youtube.com',  secure: true }); // some cookies such as 'WEVNSM' and 'WNMCID' use www.youtube.com
    }

    const lsObject = localStorage;
    let keysLS = Object.keys(lsObject)
    for (const key of keysLS) {
      let value = lsObject[key];
      if (typeof value !== 'string') continue;
      if (whitelist.includes(key)) continue;
      let isSkip = false;
      for (const s of whitelist) {
        if (isSkip) break;
        if (typeof s === 'object' && s.constructor.name === 'RegExp') {
          if (s.test(key)) isSkip = true;
        }
      }
      if (isSkip) continue;
      localStorage.removeItem(key);
    }


    function getReduceds() {

      const cookiesObject = Cookies.get();
      let keysCookiesNew = Object.keys(cookiesObject)
      const lsObject = localStorage;
      let keysLSNew = Object.keys(lsObject)


      let reduceds = [keysCookies.length - keysCookiesNew.length, keysLS.length - keysLSNew.length]


      keysCookies = null
      keysCookiesNew = null
      keysLS = null
      keysLSNew = null

      return reduceds

    }

    setTimeout(() => {

      let reduceds = getReduceds()

      if (reduceds[0] || reduceds[1]) {
        cb1 = () => {
          alert(`
${reduceds[0]} cookies and ${reduceds[1]} localstorages are deleted.
The settings have been reset.

Click OK to refresh the browser page.
              `.trim())
          reduceds = null
          unsafeWindow.location.reload()
        }
        GM.setValue('reset-youtube-settings-flag', Date.now())
      } else {
        alert('No settings to be required for reset.')
        cb1 = null
      }

    }, 300)


  })

  let triggerOnce = 0
  GM_addValueChangeListener('reset-youtube-settings-flag', function (name, old_value, new_value, remote) {
    if (!(new_value > 0)) return
    let mTriggered = !remote && typeof cb1 === 'function'
    const tdt = Date.now();
    triggerOnce = tdt
    if (mTriggered) {
      setTimeout(() => {
        if (tdt !== triggerOnce) return
        GM.deleteValue('reset-youtube-settings-flag').then(() => {
          if (tdt !== triggerOnce) return
          setTimeout(() => {
            if (tdt !== triggerOnce) return
            let pt = Date.now();
            window.requestAnimationFrame(() => {
              if (tdt !== triggerOnce) return
              let ct = Date.now();
              if (mTriggered && ct - pt < 800) {
                cb1();
                cb1 = null
              } else {
                cb1 = null
                unsafeWindow.location.reload()
              }
            })
          }, 30)
        })
      }, 180)
    } else {
      if (tdt !== triggerOnce) return
      window.requestAnimationFrame(() => {
        if (tdt !== triggerOnce) return
        cb1 = null
        unsafeWindow.location.reload()
      })
    }
  })
})();