//  originally based on createSoundEntity.js
//  Copyright 2016 High Fidelity, Inc.
//
//  updated with positional audio tracking and userdata support
//  copyright 2018 wade watts and humbletim
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

/* globals Entities, SoundCache, Audio, Script */
(function(){ 
    var VERSION = '0.0.0a';
    var ringSound;
    var entityID;
    var interval;
    var injector = null;
    var DEFAULT_OPTIONS = {
        url: 'https://hifi-content.s3.amazonaws.com/wadewatts/motorcycle-rev-03.wav',
        volume: 0.1,
        loop: false,
        stoppable: true,
        pitch: 1.0,
    };
    var options = {};

    function recalculateSoundOptions(entityID, defaultOptions) {
      var props = Entities.getEntityProperties(entityID);
      try { var data = Object(JSON.parse(props.userData)); } catch(e) { data = {}; }
      return {
        __proto__: {
          url: data.url || defaultOptions.url,
          stoppable: typeof data.stoppable !== 'undefined' ? data.stoppable : defaultOptions.stoppable,
        },
        position: props.position || defaultOptions.url,
        orientation: props.rotation || defaultOptions.orientation,
        volume: isFinite(data.volume) ? parseFloat(data.volume) : defaultOptions.volume,
        loop: typeof data.loop !== 'undefined' ? data.loop : defaultOptions.loop,
        pitch: isFinite(data.pitch) ? parseFloat(data.pitch) : defaultOptions.pitch,
      };
    }

    function updateSoundOptions() {
      options = recalculateSoundOptions(entityID, DEFAULT_OPTIONS);
      if (injector) {
        injector.setOptions(options);
      }
    }

    function startSound() {
      var wasPlaying = injector !== null;
      stopSound();
      updateSoundOptions();
      if (wasPlaying && options.stoppable) {
        return console.info('>>>>>>>>>> sound set stoppable; not restarting until next click');
      }
      if (!ringSound || ringSound.url !== options.url) {
        console.info('loading sound...', options.url);
        ringSound = SoundCache.getSound(options.url);
      }
      if (!injector) {
        console.info(entityID, "startSound...", wasPlaying, options.stoppable);
        injector = Audio.playSound(ringSound, options);
      } else {
        console.info(entityID, "restartSound...", wasPlaying, options.stoppable);
        injector.restart();
      }
    }
  
    function stopSound() {
      if (injector) {
        console.info('stopping sound');
        injector.setOptions({ volume: 0 });
        injector.stop();
        injector = null;
      }
    }

    // entity methods
    this.preload = function(id) {
        entityID = id;
        console.info("preload("+id+")", 'movingEntitySound v'+VERSION);
        try { var data = Object(JSON.parse(Entities.getEntityProperties(entityID).userData)); } catch(e) { data = {}; }
        if (!data.url) {
           console.info('populating default userData values...', JSON.stringify(DEFAULT_OPTIONS,0,2));
           for (var p in DEFAULT_OPTIONS) { data[p] = data[p] || DEFAULT_OPTIONS[p]; }  
           Entities.editEntity(entityID, { userData: JSON.stringify(data) });
        }
        interval = Script.setInterval(updateSoundOptions, 1000/24);
    }

    this.unload = function(id) {
      stopSound();
      interval = Script.clearInterval(interval);
    };

    this.clickDownOnEntity = function(entityID, mouseEvent) {
      if (mouseEvent.isLeftButton) {
        startSound();
      }
    };

    this.startFarTrigger = function(entityID, asdf) {
      startSound();
    };
})