// ==UserScript==
// @name        килл по пробелу Better YouTube
// @namespace   feifeihang.info
// @homepage    greasyfork.org/en/scripts/12250-better-youtube
// @description Перевязайте клавишу пробела для воспроизведения/паузы. Rebind space key for play/pause (no more accidentally scroll down).
// @include     https://youtu.be/*
// @include     http://youtu.be/*
// @include     https://www.youtube.com/*
// @include     http://www.youtube.com/*
// @version     5.2.5
// @grant       none
// ==/UserScript==
(function (window, document, undefined) {
  // найти и сохранить ссылку на видеоплеер./ find and keep a reference of the video player.
  var player;
  var stylePlayer = '';
  var video;
  var videoSize = {
  };
  var controls;
  var controlsWidth;
  // флаг, указывающий на то, что мини-плеер включен /a flag to indicate is the mini player is toggled.
  var isToggled = false;
  var isTogglable = true;
  var originalHeight;
  var s2sBtn;
  var hasAddedMini = false;
  var shouldToggle = false;
  var urlBuffer = '';
  var playBtn;
  window.setInterval(function () {
    if (isToggled &&
    !/^http[sS]*\:\/\/www\.youtube\.com\/watch[?]*/.test(window.location.href) &&
    shouldToggle) {
      turnOff();
      shouldToggle = false;
      window.removeEventListener('keydown', bindSpaceKey, true);
    }
    if (!shouldToggle &&
    /^http[sS]*\:\/\/www\.youtube\.com\/watch[?]*/.test(window.location.href)) {
      if (window.location.href !== urlBuffer) {
        isToggled = false;
        urlBuffer = urlBuffer;
        // bind whitespace key.
        playBtn = document.querySelector('.ytp-play-button');
        if (playBtn) {
          window.addEventListener('keydown', bindSpaceKey, true);
        }
      }
      shouldToggle = true;
    }
  }, 500);
  var intervalId = window.setInterval(function () {
    if (!hasAddedMini &&
    /^http[sS]*\:\/\/www\.youtube\.com\/watch[?]*/.test(window.location.href)) {
      shouldToggle = true;
      player = document.querySelector('#movie_player');
      video = document.querySelector('#movie_player video.video-stream');
      controls = document.querySelector('#movie_player .ytp-chrome-bottom');
      window.addEventListener('scroll', function () {
        if (!isTogglable) {
          return false;
        }
      }, false);
      //добавить переключатель мини-плеера./ add a mini player toggle button.
      var btn = document.createElement('div');
      btn.className += ' yt-uix-button yt-uix-button-size-default yt-uix-button-primary';
      btn.innerHTML = 'Mini: on';
      btn.style = 'line-height: 26px; height: 26px; margin-left: 5px;';
      btn.onclick = function () {
        if (this.innerHTML === 'Mini: on') {
          this.innerHTML = 'Mini: off';
          isTogglable = false;
          if (isToggled) {
            turnOff();
          }
        }
        else {
          this.innerHTML = 'Mini: on';
          gotoMini();
          isTogglable = true;
        }
      }
      var dom = document.querySelector('#yt-masthead-signin') ||
      document.querySelector('#yt-masthead-user');
      dom.appendChild(btn);
      hasAddedMini = true;
      window.clearInterval(intervalId);
    }
  }, 500);
  function bindSpaceKey(evt) {
    var inputs = document.querySelectorAll('input[type=text], textarea, div.yt-simplebox-text');
    inputs = Array.prototype.slice.apply(inputs);
    if (inputs.indexOf(document.activeElement) === - 1 && evt.keyCode === 32) {
      evt.preventDefault();
      playBtn.click();
    }
  }
  function turnOff() {
    if (document.querySelector('.ytp-size-button')) {
      document.querySelector('.ytp-size-button').style.display = 'inline-block';
    }
  }
}) (window, document);