// ==UserScript==
// @name         bilibili-哔哩哔哩关灯
// @namespace    http://tampermonkey.net/
// @description  bilibili-哔哩哔哩关灯添加到视频右键
// @version      0.2
// @author       tomiaa
// @match        *://www.bilibili.com/video/*

// @downloadURL none
// ==/UserScript==
; (() => {
    console.clear()
    const doc = document;
    let isAppend = false;
    const player = doc.getElementById('bilibiliPlayer')
    let observer = new MutationObserver(() => {
      if(isAppend) return observer.disconnect();
      
      let menu = player.getElementsByClassName('bilibili-player-context-menu-container');

      if(!menu.length ) return;
      if(!Array.from(menu[1].classList).includes('active')) return;

      let ul = menu[1].children[0]; 

      let li = doc.createElement('li');
      li.className = 'context-line context-menu-function';
      let a = doc.createElement('a');
      a.className = 'context-menu-a js-action';
      a.innerHTML = '关 灯';
      li.appendChild(a);
      let isGuandeng = false;
      li.addEventListener('click', () => {
        let mask = doc.getElementById('heimu')
        let player = doc.getElementById('bilibiliPlayer');
        doc.getElementById('bilibili-player').style.zIndex = '99999';
        if(!isGuandeng){
          a.innerHTML = '开 灯';
          mask.style.display = 'block';
          player.classList.add('mode-light-off');
        }else{
          a.innerHTML = '关 灯';
          mask.style.display = 'none';
          player.classList.remove('mode-light-off');
        }
        isGuandeng = !isGuandeng;
      })
      
      ul.appendChild(li);
      isAppend = true;

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