/* global View */
'use strict';

const REPEAT_VALUES = ['off', 'list', 'song'];
const SHUFFLE_VALUES = ['off', 'on'];

var PlayerView = View.extend(function PlayerView() {
  View.call(this); // super();

  this.artwork = document.getElementById('artwork');
  this.controls = document.getElementById('controls');
  this.seekBar = document.getElementById('seek-bar');

  this.artwork.addEventListener('share', () => this.share());
  this.artwork.addEventListener('repeat', () => {
    this.setRepeatSetting(this.artwork.repeat);
  });
  this.artwork.addEventListener('shuffle', () => {
    this.setShuffleSetting(this.artwork.shuffle);
  });
  this.artwork.addEventListener('ratingchange', (evt) => {
    this.setSongRating(evt.detail);
  });

  this.controls.addEventListener('play', () => this.play());
  this.controls.addEventListener('pause', () => this.pause());
  this.controls.addEventListener('previous', () => this.previous());
  this.controls.addEventListener('next', () => this.next());
  this.controls.addEventListener('startseek', (evt) => {
    this.startFastSeek(evt.detail.reverse);
  });
  this.controls.addEventListener('stopseek', () => this.stopFastSeek());

  this.seekBar.addEventListener('seek', (evt) => {
    this.seek(evt.detail.elapsedTime);
  });

  this.client.on('play', () => this.controls.paused = false);
  this.client.on('pause', () => this.controls.paused = true);
  this.client.on('songChange', () => this.update());
  this.client.on('durationChange', (duration) => {
    this.seekBar.duration = duration;
  });
  this.client.on('elapsedTimeChange', (elapsedTime) => {
    this.seekBar.elapsedTime = elapsedTime;
  });

  this.update();
});

PlayerView.prototype.update = function() {
  this.getPlaybackStatus().then((status) => {
    this.getSong(status.filePath).then((song) => {
      if (!song) {
        return;
      }

      document.l10n.formatValues(
        'unknownTitle', 'unknownArtist', 'unknownAlbum'
      ).then(([unknownTitle, unknownArtist, unknownAlbum]) => {
        this.title          = song.metadata.title  || unknownTitle;
        this.artwork.artist = song.metadata.artist || unknownArtist;
        this.artwork.album  = song.metadata.album  || unknownAlbum;
      });

      this.artwork.els.rating.value = song.metadata.rated;
    });

    this.getSongArtwork(status.filePath)
      .then((url) => this.artwork.src = url);

    this.artwork.repeat      = REPEAT_VALUES[status.repeat];
    this.artwork.shuffle     = SHUFFLE_VALUES[status.shuffle];
    this.controls.paused     = status.paused;
    this.seekBar.duration    = status.duration;
    this.seekBar.elapsedTime = status.elapsedTime;
    this.render();
  });
};

PlayerView.prototype.destroy = function() {
  this.client.destroy();

  View.prototype.destroy.call(this); // super(); // Always call *last*
};

PlayerView.prototype.render = function() {
  this.onRenderDone();
};

PlayerView.prototype.startFastSeek = function(reverse) {
  this.fetch('/api/audio/fastseek/start/' + (reverse ? 'reverse' : 'forward'));
};

PlayerView.prototype.stopFastSeek = function() {
  this.fetch('/api/audio/fastseek/stop');
};

PlayerView.prototype.seek = function(time) {
  this.fetch('/api/audio/seek/' + time);
};

PlayerView.prototype.play = function() {
  this.fetch('/api/audio/play');
};

PlayerView.prototype.pause = function() {
  this.fetch('/api/audio/pause');
};

PlayerView.prototype.previous = function() {
  this.fetch('/api/queue/previous');
};

PlayerView.prototype.next = function() {
  this.fetch('/api/queue/next');
};

PlayerView.prototype.share = function() {
  this.getPlaybackStatus().then((status) => {
    this.fetch('/api/activities/share/' + status.filePath);
  });
};

PlayerView.prototype.getPlaybackStatus = function() {
  return this.fetch('/api/audio/status').then(response => response.json());
};

PlayerView.prototype.setRepeatSetting = function(repeat) {
  this.fetch('/api/queue/repeat/' + REPEAT_VALUES.indexOf(repeat));
};

PlayerView.prototype.setShuffleSetting = function(shuffle) {
  this.fetch('/api/queue/shuffle/' + SHUFFLE_VALUES.indexOf(shuffle));
};

PlayerView.prototype.setSongRating = function(rating) {
  this.getPlaybackStatus().then((status) => {
    this.fetch('/api/songs/rating/' + rating + '/' + status.filePath);
  });
};

PlayerView.prototype.getSong = function(filePath) {
  return this.fetch('/api/songs/info/' + filePath).then((response) => {
    return response.json();
  });
};

PlayerView.prototype.getSongArtwork = function(filePath) {
  return this.fetch('/api/artwork/url/original/' + filePath)
    .then((response) => {
      return response.json();
    });
};

window.view = new PlayerView();