//
//  triggerToTalk.js
//
//  by Zach Fox on 06/22/18
//  Copyright 2018 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html

(function() {

    var _this;

    var TRIGGER_CONTROLS = [Controller.Standard.LT, Controller.Standard.RT];
    var TRIGGER_THRESHOLD = 0.95;
    var MIC_MUTED_SOUND = SoundCache.getSound(Script.resolvePath("micMuted.wav"));
    var MIC_UNMUTED_SOUND = SoundCache.getSound(Script.resolvePath("micUnmuted.wav"));

    var initialMutedStatus = false;
    var equipped = false;
    var currentHand = null;
    var injector;
    
    var TriggerToTalk = function() {
        _this = this;
    };

    TriggerToTalk.prototype = {
        
        // START PRELOAD AND UNLOAD FUNCTIONS
        preload: function(entityID) {
            _this.entityID = entityID;
        },

        unload: function() {
            if (equipped) {
                Audio.muted = initialMutedStatus;
            }
        },
        // END PRELOAD AND UNLOAD FUNCTIONS

        // START EQUIP-RELATED FUNCTIONS
        startEquip: function(id, params) {
            equipped = true;
            currentHand = params[0] === "left" ? 0 : 1;
        },

        continueEquip: function(id, params) {
            if (!equipped) {
                var parentJointIndex = Entities.getEntityProperties(_this.entityID, 'parentJointIndex').parentJointIndex;
                currentHand = (parentJointIndex === MyAvatar.getJointIndex("LeftHand")) ? 0 : 1;
                initialMutedStatus = Audio.muted;
                equipped = true;
            } else {
                var triggerValue = Controller.getValue(TRIGGER_CONTROLS[currentHand]);
                if (triggerValue < TRIGGER_THRESHOLD) {
                    if (!Audio.muted) {
                        Entities.editEntity(_this.entityID, {
                            color: { red: 255, green: 0, blue: 0 }
                        });
                        Audio.muted = true;
                        _this.playSound(MIC_MUTED_SOUND);
                    }
                } else {
                    if (Audio.muted) {
                        Entities.editEntity(_this.entityID, {
                            color: { red: 0, green: 255, blue: 0 }
                        });
                        Audio.muted = false;
                        _this.playSound(MIC_UNMUTED_SOUND);
                    }
                }
            }
        },

        releaseEquip: function(id, params) {
            currentHand = null;
            equipped = false;
            Audio.muted = initialMutedStatus;
        },
        // END EQUIP-RELATED FUNCTIONS
        
        // START UTILITY FUNCTIONS
        playSound: function(sound) {
            if (sound.downloaded) {
                if (injector) {
                    injector.stop();
                }
                injector = Audio.playSound(sound, {
                    position: MyAvatar.position,
                    volume: 0.3,
                    localOnly: true
                });
            }
        }
        // END UTILITY FUNCTIONS
    };

    return new TriggerToTalk();
});