import Em from 'ember';
import musicControlMixin from '../mixins/music-control';
import visualizerMixin from '../mixins/visualizer';

export default Em.Component.extend(musicControlMixin, visualizerMixin, {
  classNames: ['col-lg-6', 'col-lg-offset-3', 'col-sm-10', 'col-sm-offset-1', 'col-xs-12'],
  classNameBindings: ['active::hidden'],

  onActiveChange: function(){
    if(this.get('active')){
      Em.$('#beatSpeakerCenter').removeClass('pop');
      Em.$('#playNotification').removeClass('fadeOut');
    }
  }.observes('active'),

  actions: {
    slideTogglePlayerBottom: function(){
      this.changePlayerControl('playerBottomDisplayed', !this.get('playerBottomDisplayed'));
    },
    saveSongSettings: function() {
    },
    goToSong: function(index){
      var dancer = this.get('dancer'), audio = new Audio();
      audio.src = this.get('playQueue')[index].url;

      if(dancer.audio) {
        this.clearCurrentAudio(true);
      }

      dancer.load(audio);
      this.setProperties({
        playQueuePointer: index,
        timeElapsed: 0
      });

      this.send('play');
    },
    removeAudio: function(index){
      if(index === this.get('playQueuePointer')) {
        this.clearCurrentAudio(true);
      }

      this.get('playQueue').removeAt(index);
    },
    defaultControls: function(){
      var beatOptions = this.get('beatOptions');

      this.changePlayerControl('threshold', beatOptions.threshold.defaultValue, true);
      this.changePlayerControl('decay', beatOptions.decay.defaultValue, true);
      this.changePlayerControl('frequency', beatOptions.frequency.defaultValue, true);
      this.changePlayerControl('transitionTime', beatOptions.transitionTime.defaultValue, true);
    },
    playerAreaPlay: function(){
      if(Em.isEmpty(Em.$('#playerControls:hover'))){
        this.send('play');
        this.set('fadeOutNotification', true);
        Em.$('#playNotification').removeClass('fadeOut').prop('offsetWidth', Em.$('#playNotification').prop('offsetWidth')).addClass('fadeOut');
      }
    },
    play: function () {
      var dancer = this.get('dancer');

      if(this.get('playQueuePointer') !== -1 ) {
        if (this.get('playing')) {
          dancer.pause();
          clearInterval(this.get('incrementElapseTimeHandle'));
          this.toggleProperty('playing');
          this.set('timeElapsed', Math.floor(dancer.getTime()));
        } else {
          if(this.get('volumeMuted')) {
            dancer.setVolume(0);
          } else {
            dancer.setVolume(this.get('volume')/100);
          }

          dancer.play();
          this.set('incrementElapseTimeHandle', window.setInterval(this.incrementElapseTime.bind(this), 1000));
          this.toggleProperty('playing');
        }
      }
    },
    volumeChanged: function (value) {
      this.changePlayerControl('volume', value);
      if(this.get('playing')) {
        this.get('dancer').setVolume(value/100);
      }
    },
    next: function () {
      var playQueuePointer = this.get('playQueuePointer'), playQueueLength = this.get('playQueue.length');
      var nextSong = (playQueuePointer + 1);

      if(nextSong > playQueueLength-1 && this.get('repeat') === 1){
        nextSong = nextSong % playQueueLength;

        this.send('goToSong', nextSong);
      }
    },
    previous: function () {
      if(this.get('timeElapsed') > 5) {
        this.send('seekChanged', 0);
      } else {
        var nextSong = this.get('playQueuePointer');
        nextSong--;

        if(nextSong < 0) {
          nextSong = this.get('playQueue.length') - 1;
        }

        this.send('goToSong', nextSong);
      }
    },
    toggleVisualizations: function() {
      this.toggleProperty('visualizationsDisplayed');
    },
    fullscreen: function () {},
    seekChanged: function (position) {
      var dancer = this.get('dancer');

      if(dancer.audio){
        var audioPosition = Math.floor(this.get('timeTotal') * position / 100);
        dancer.audio.currentTime = audioPosition;
        this.set('timeElapsed', audioPosition);
      }
    },
    volumeMutedChanged: function (value) {
      var dancer = this.get('dancer'),
        volumeMuted = Em.isNone(value) ? !this.get('volumeMuted') : value;

      this.changePlayerControl('volumeMuted', volumeMuted);

      if(this.get('playing')){
        if(volumeMuted){
          dancer.setVolume(0);
        } else {
          dancer.setVolume(this.get('volume')/100);
        }
      }
    },
    shuffleChanged: function (value) {
      this.changePlayerControl('shuffle', Em.isNone(value) ? !this.get('shuffle') : value);
    },
    repeatChanged: function (value) {
      this.changePlayerControl('repeat', Em.isNone(value) ? (this.get('repeat') + 1) % 3 : value);
    },
    thresholdChanged: function(value) {
      this.changePlayerControl('threshold', value, true);
    },
    transitionTimeChanged: function(value) {
      this.changePlayerControl('transitionTime', value);
    },
    playerBottomDisplayedChanged: function(value) {
      this.changePlayerControl('playerBottomDisplayed', value);
    },
    decayChanged: function(value){
      this.changePlayerControl('decay', value, true);
    },
    frequencyChanged: function(value){
      this.changePlayerControl('frequency', value, true);
    },
    addAudio: function () {
      Em.$('#fileInput').click();
    },
    playListAreaAddAudio: function(){
      this.send('addAudio');
    },
    speakerViewedChanged: function(value){
      this.set('speakerViewed', value);
    },
    sequentialTransitionChanged: function(value){
      this.set('sequentialTransition', value);
    },
    onBeatBriOnlyChanged: function(value){
      this.set('onBeatBriOnly', value);
    },
    clickSpeaker: function(){
      this.simulateKick(1);
    },
    dropFiles: function(){
      this.setProperties({
        dragging: false,
        draggingOverPlayListArea: false
      });
      this.send('handleNewFiles', event.dataTransfer.files);
    },
    playListAreaDragOver: function(){
      this.set('draggingOverPlayListArea', true);
    },
    playListAreaDragLeave: function(){
      this.set('draggingOverPlayListArea', false);
    },
    handleNewFiles: function(files){
      var self = this,
        playQueue = this.get('playQueue'),
        updatePlayQueue = function(){
        var tags = ID3.getAllTags("local");
        playQueue.push({filename: this.name.replace(/\.[^/.]+$/, ""), url: URL.createObjectURL(this), artist: tags.artist, title: tags.title });

        ID3.clearAll();
        self.notifyPropertyChange('playQueue');

        // make sure to init the first song
        if(playQueue.length > 0 && self.get('playQueuePointer') === -1){
          self.send('goToSong', 0);
        }
      };

      for (var key in files) {
        if (files.hasOwnProperty(key)) {
          var file = files[key];

          if(file.type.startsWith('audio')) {
            ID3.loadTags("local", updatePlayQueue.bind(file),{
              dataReader: new FileAPIReader(file)
            });
          }
        }
      }
    }
  },

  clearCurrentAudio: function(resetPointer) {
    var dancer = this.get('dancer');

    dancer.pause();
    clearInterval(this.get('incrementElapseTimeHandle'));

    if(resetPointer){
      this.set('playQueuePointer', -1);
    }

    this.setProperties({
      timeElapsed: 0,
      timeTotal: 0,
      playing: false
    });
  },

  goToNextSong: function() {
    this.get('beatHistory').clear();

    if(this.get('repeat') === 2){
      this.send('goToSong', this.get('playQueuePointer'));
    } else {
      this.get('timeElapsed');
      this.send('next');
    }
  },

  dragOver: function() {
    var dragLeaveTimeoutHandle = this.get('dragLeaveTimeoutHandle');
    this.set('dragging', true);

    if (dragLeaveTimeoutHandle) {
      clearTimeout(dragLeaveTimeoutHandle);
    }
  },

  dragLeave: function(){
    // need to delay the dragLeave notification to avoid flickering ( hovering over some page elements causes this event to be sent )
    var self = this;
    this.set('dragLeaveTimeoutHandle', setTimeout(function(){ self.set('dragging', false); }, 500));
  },

  simulateKick: function(mag) {
    var activeLights = this.get('activeLights'),
      transitionTime = this.get('transitionTime') * 10,
      onBeatBriOnly = this.get('onBeatBriOnly'),
      self = this,
      color = null,
      stimulateLight = function (light, brightness, hue) {
        var options = {'bri': brightness, 'transitiontime': transitionTime};

        if(!Em.isNone(hue)) {
          options.hue = hue;
        }

        Em.$.ajax(self.get('apiURL') + '/lights/' + light + '/state', {
          data: JSON.stringify(options),
          contentType: 'application/json',
          type: 'PUT'
        });
      };

    if(activeLights.length > 0){
      var lastLightBopIndex = this.get('lastLightBopIndex'),
        sequentialTransition = this.get('sequentialTransition'),
        light;

      if(sequentialTransition) {
        light = activeLights[lastLightBopIndex];
        this.set('lastLightBopIndex', (lastLightBopIndex+1) % activeLights.length);
      } else {
        light = Math.floor(Math.random() * activeLights.length) + 1;
      }

      if(!onBeatBriOnly) {
        color = Math.floor(Math.random() * 65535);
      }

      stimulateLight(light, 254, color);
      setTimeout(stimulateLight, transitionTime + 50, light, 1);

      this.set('paused', true);

      setTimeout(function () {
        self.set('paused', false);
      }, 150);
    }

    //work the music beat area
    if(this.get('speakerViewed')){
      // simulate the speaker vibration by running a CSS animation on it
      Em.$('#beatSpeakerCenter').removeClass('pop').prop('offsetWidth', Em.$('#beatSpeakerCenter').prop('offsetWidth')).addClass('pop');
    } else {
      var beatHistory = self.get('beatHistory'),
        maxSize = self.get('maxBeatHistorySize');
      beatHistory.unshiftObjects('Beat intesity of <b>' + mag.toFixed(3) + '</b> at <b>' + self.get('timeElapsedTxt') + '</b>');

      if(beatHistory.length > maxSize){
        beatHistory.popObject();
      }
    }
  },

  init: function () {
    this._super();

    var dancer = new Dancer(),
      self = this,
      threshold = this.get('threshold'),
      decay = this.get('decay'),
      frequency = this.get('frequency'),
      kick = dancer.createKick({
        threshold: threshold,
        decay: decay,
        frequency: frequency,
        onKick: function (mag) {
          if (self.get('paused') === false) {
            self.simulateKick(mag);
          }
        }
      });

    kick.on();

    dancer.bind('loaded', function(){
      self.set('timeTotal', Math.round(dancer.audio.duration));
    });

    this.setProperties({
      dancer: dancer,
      kick: kick
    });

    ['volume', 'shuffle', 'repeat', 'volumeMuted', 'threshold', 'decay', 'frequency', 'speakerViewed', 'transitionTime', 'sequentialTransition', 'playerBottomDisplayed', 'onBeatBriOnly'].forEach(function (item) {
      if (localStorage.getItem('huegasm.' + item)) {
        var itemVal = localStorage.getItem('huegasm.' + item);
        if (item === 'repeat' || item === 'volume' || item === 'decay' || item === 'threshold' || item === 'transitionTime') {
          itemVal = Number(itemVal);
        } else if(item === 'frequency') {
          itemVal = itemVal.split(',').map(function(val){return Number(val);});
        } else {
          itemVal = (itemVal === 'true');
        }

        self.send(item+'Changed', itemVal);
      }
    });
  },

  didInsertElement: function () {
    var self = this;

    Em.$('#fileInput').on('change', function () {
      var files = this.files;
      self.send('handleNewFiles', files);
    });

    // prevent space/text selection when the user repeatedly clicks on the center
    Em.$('#beatSpeakerContainer').on('mousedown', '#beatSpeakerCenter', function(event) {
      event.preventDefault();
    });

    // control the volume by scrolling up/down
    Em.$('#playerArea').on('mousewheel', function(event) {
      if(self.get('playQueueNotEmpty')) {
        var scrollSize = 5;

        if(event.deltaY < 0) {
          scrollSize *= -1;
        }
        var newVolume = self.get('volume') + scrollSize;

        self.send('volumeChanged', newVolume < 0 ? 0 : newVolume);
        event.preventDefault();
      }
    });
  }
});