// ==UserScript==
// @name         Disable YouTube Mobile Autoplay (Supports Desktop View)
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Automatically turn off autoplay on YouTube (PC & Mobile)
// @match        https://www.youtube.com/*
// @match        https://m.youtube.com/*
// @grant        none
// @run-at       document-start
// @license      MIT
// ==/UserScript==

(() => {

    'use strict';

    const turnOffAutoplay = () => {

        // Mobile

        const mobileBtn = document.querySelector('.ytm-autonav-toggle-button-container');

        if (mobileBtn && mobileBtn.getAttribute('aria-pressed') === 'true') {

            mobileBtn.click();

        }

        // PC

        const pcBtn = document.querySelector('.ytp-autonav-toggle-button');

        if (pcBtn && pcBtn.getAttribute('aria-checked') === 'true') {

            pcBtn.click();

        }

    };

    // Run when page is loaded

    window.addEventListener('load', turnOffAutoplay);

    // Run on SPA navigation events

    window.addEventListener('yt-navigate-finish', turnOffAutoplay);

    // Observe DOM changes (e.g., video replacement)

    const observer = new MutationObserver(turnOffAutoplay);

    observer.observe(document.documentElement, { childList: true, subtree: true });

})();