// ==UserScript==
// @name         TY Dark Mode
// @namespace    http://tampermonkey.net/
// @version      0.09
// @description  Force dark mode enable and stop autoplay
// @author       pqwoerituytrueiwoq
// @match        https://www.youtube.com/*
// @exclude      https://www.youtube.com/embed/*
// @grant        none
// ==/UserScript==

(function() {
    var ran=false,log=console.log;
    log=function(){return;}// disable debug messages
    log('yt dark mode script running',document.location.href);
    function initilizeScript(){
        if(!ran){
            log('page load complete');
        }
        function STFUautoplay(){
            log('make autoplay fuck off');
            var ap=document.evaluate("//div[@id='autoplay']/../paper-toggle-button", document, null, 9, null).singleNodeValue;// find autoplay button
            if(ap){
                log('autoplay toggle found');
                if(ap.getAttribute('checked')===null){
                    log('autoplay is off');
                }
                else{
                    log('autoplay was on');
                    ap.click();// toggle autoplay
                }
            }
            else{
                log('no autoplay toggle on page');
            }
            setTimeout(STFUautoplay,5000);// do it again
        }
        if(document.body.parentNode.getAttribute('dark')===null){
            function findMenuEntry(n=0){
                var m=document.evaluate("//ytd-toggle-theme-compact-link-renderer/div[@id='label']", document, null, 9, null).singleNodeValue;
                if(!m){
                    log('waiting on menu');
                    return setTimeout(function(){
                        n++;
                        if(n/20==parseInt(n)){
                            b.click();// click open menu again
                        }
                        findMenuEntry(n);
                    },50);// not found, try again later
                }
                log('clicking menu entry');
                m.click();// click menu entry
                log('click switch');
                document.evaluate("//ytd-multi-page-menu-renderer//div[@id='toggleButton']", document, null, 9, null).singleNodeValue.click();// click toggle option
                log('set color');
                document.body.parentNode.setAttribute('dark',true);// turn it back to dark
                log('close menu');
                document.getElementById('button').click();//close menu
                log('dark mode fully enabled');
            }
            log('set color');
            document.body.parentNode.setAttribute('dark',true);// turn it dark
            log('open menu');
            var b=document.evaluate("//ytd-topbar-menu-button-renderer/div[@id='button']/a/yt-icon-button[@id='button']/button[@aria-label='Settings']", document, null, 9, null).singleNodeValue||document.getElementById('img');// find menu button
            b.click();// open menu
            findMenuEntry();// do stuff in menu
        }
        else{
            log('dark mode in use, no action needed');
        }
        STFUautoplay();
        ran=true;
    }
    window.addEventListener('load',initilizeScript,false);
    setTimeout(function(){
        if(!ran){
            log('page never loaded, lets try to run');
            try{
                ran=true;
                initilizeScript();
            }
            catch(e){
                log('Error:',e);
            }
        }
    },5000);
})();