MarshallOfSound/Google-Play-Music-Desktop-Player-UNOFFICIAL-

window.wait(() => {
  window.GPM.on('change:playback', (mode) => {
    switch (mode) {
      case window.GMusic.PlaybackStatus.STOPPED:
        Emitter.fire('playback:isStopped');
        break;
      case window.GMusic.PlaybackStatus.PAUSED:
        Emitter.fire('playback:isPaused');
        break;
      case window.GMusic.PlaybackStatus.PLAYING:
        Emitter.fire('playback:isPlaying');
        break;
      default:
        break;
    }
  });

  let playTime = 0;
  let lastPosition = 0;
  let currentTrack;

  window.GPM.on('change:track', (track) => {
    currentTrack = track;
    playTime = 0;
    lastPosition = 0;
    Emitter.fire('change:track', track);
    Emitter.fire('change:rating', window.GPM.rating.getRating());
    if (window.GPM.rating.getRating() === '1' && Settings.get('skipBadSongs')) {
      window.GPM.playback.forward();
    }
  });

  window.GPM.on('change:rating', (rating) => {
    Emitter.fire('change:rating', rating);
  });

  window.GPM.on('change:shuffle', (mode) => {
    Emitter.fire('change:shuffle', mode);
  });
  // DEV: Set inital shuffle value
  setTimeout(() => {
    Emitter.fire('change:shuffle', window.GPM.playback.getShuffle());
  }, 100);

  window.GPM.on('change:repeat', (mode) => {
    Emitter.fire('change:repeat', mode);
  });
  // DEV: Set inital repeat value
  setTimeout(() => {
    Emitter.fire('change:repeat', window.GPM.playback.getRepeat());
  }, 100);

  // This is emitter in chromecast.js by our voodoo
  window.GPM.on(location.host === 'music.youtube.com' || Settings.get('forceLegacyPlaybackTimeMonitoring') ? 'change:playback-time' : 'change:playback-time-internal', (playbackInfo) => {
    Emitter.fire('change:playback-time', playbackInfo);
    const progress = playbackInfo.current - lastPosition;
    lastPosition = playbackInfo.current;
    // Update time if slider wasn't moved manually
    if (progress > 0 && progress < 2000) {
      playTime += progress;
    }
    // Scrobble if played more than half or 4 minutes
    if (playbackInfo.total !== 0 && (playTime / playbackInfo.total) > 0.5 || playTime > 1000 * 60 * 4) {
      Emitter.fire('change:track:scrobble', {
        title: currentTrack.title,
        artist: currentTrack.artist,
        album: currentTrack.album,
        duration: currentTrack.duration,
        timestamp: Math.round((Date.now() - playTime) / 1000),
      });
      playTime -= playbackInfo.total;
    }
  });

  window.GPM.on('change:volume', (newVolume) => {
    Emitter.fire('change:volume', newVolume);
  });
  Emitter.fire('change:volume', window.GPM.volume.getVolume());
  window.GPM.on('change:playlists', (playlists) => {
    Emitter.fire('change:playlists', playlists);
  });
  window.GPM.on('change:queue', (queue) => {
    Emitter.fire('change:queue', queue);
  });
  window.GPM.on('change:search-results', (results) => {
    Emitter.fire('change:search-results', results);
  });
  window.GPM.on('change:library', (library) => {
    Emitter.fire('change:library', library);
  });
  Emitter.fire('change:library', window.GPM.library.getLibrary());

  Emitter.on('execute:gmusic', (event, cmd) => {
    if (window.GPM && GPM[cmd.namespace] && GPM[cmd.namespace][cmd.method]
      && typeof GPM[cmd.namespace][cmd.method] === 'function') {
      let error;
      let result;
      try {
        result = GPM[cmd.namespace][cmd.method].apply(GPM, cmd.args || []);
      } catch (err) {
        error = err;
      }
      const sendResponse = (response, isError) => {
        Emitter.fire(`execute:gmusic:result_${cmd.requestID}`, {
          namespace: 'result',
          type: isError ? 'error' : 'return',
          value: response,
          requestID: cmd.requestID,
        });
      };
      if (error) {
        sendResponse(error, true);
      } else {
        Promise.resolve(result)
          .then((response) => sendResponse(response, false))
          .catch((err) => sendResponse(err, true));
      }
    }
  });
});