// ==UserScript==// @match       *://*/*// @name        YGGTorrent infinite session// @description Stay signed in for real// @grant       GM.getValue// @grant       GM.setValue// @grant       GM.deleteValue// @version     1.1.0// @author      KaKi87// @license     GPL-3.0-or-later// @namespace   https://git.kaki87.net/KaKi87/userscripts/src/branch/master/YGGTorrentInfiniteSession// ==/UserScript==/*Copyright (C) 2020 - KaKi87This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.*//** [ Function ] Get logout link** NOTE : link not in DOM while logged out**/const getLogout = () => document.querySelector('[href$="/user/logout"]');/** [ Event handler ] Delete credentials on logout**/const createLogoutHandler = () => {const logout = getLogout();if(!logout) return;logout.addEventListener('click', async event => {if(event.isTrusted){event.preventDefault();await GM.deleteValue('username');await GM.deleteValue('password');logout.click();}}, true);}/** [ Event listener ] Login callback**/const onceLoggedIn = callback => {(function waitForLogin(){if(getLogout()) callback();else setTimeout(waitForLogin, 150);})();};/** [ Main ]**/document.addEventListener('readystatechange', async () => {if(document.readyState !== 'complete') return;/** [Step #0] Misc** Hide native ads**/document.styleSheets[0].insertRule('.ad-alert-wrapper { display: none; }');/** [ Step #1 ] Smartly detect YGGTorrent website** despite frequent domain name changes** using regular expression** NOTE : although this expression is pretty strict,** it will match any "*.ygg.tld" and "*.yggtorrent.tld"**/if(!window.location.href.match(new RegExp([//  EXPRESSION    |     DESIGNATION  | COMMENT'^'             , //  start'https:\/\/'    , //  protocol       | http_s_ only'([^.]+\.)?'    , //  subdomain      | optional'ygg(torrent)?' , //  domain         | "ygg" or "yggtorrent"'\.[^.]+'       , //  extension      | aka. TLD'(\/.+)?'       , //  path           | optional'$'               //  end].join('')))) return;/** [ Step #2 ] Get login form** NOTE : form exists in DOM while logged in**/const form = document.querySelector('#user-login');if(!form) return;constformUsername = form.querySelector('[type=text]'),formPassword = form.querySelector('[type=password]');/** [ Step #3 ] Handle login & logout** Inherent features :**  - Save credentials on login**  - Delete credentials on logout**/if(getLogout()) createLogoutHandler();else onceLoggedIn(() => {GM.setValue('username', formUsername.value);GM.setValue('password', formPassword.value);createLogoutHandler();});/** [Step #4 ] Auto-login**/constusername = await GM.getValue('username'),password = await GM.getValue('password');if(username && password && !getLogout()){formUsername.value = username;formPassword.value = password;form.querySelector('[type=submit]').click();}});