package Gemfruit.Audio {

    import flash.events.Event;
    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.media.SoundTransform;
    import ShadowLib.Core.GameObject;
    import ShadowLib.Audio.GameSound;
    import ShadowLib.Input.Keyboard;
    import ShadowLib.Input.Key;

    public class AudioManager {

        private var sounds:Vector.<GameSound>;
        private var soundNames:Vector.<String>;

        //Music control
        private var currentLoop:GameSound;
        //Muting
        private var soundOff:Boolean = false;
        private var musicOff:Boolean = false;
        //Reading Audio
        private var audioReader:AudioReader;
        //Singleton
        private static var instance:AudioManager;
        private static var allowInstantiation:Boolean;

        public function AudioManager() {
            if(allowInstantiation) {
                init();
            } else {
                throw new Error("Instantiation failed - Use getInstance() instead of new MapHandler()");
            }
        }

        public function init():void {
            sounds = new Vector.<GameSound>();
            soundNames = new Vector.<String>();
        }

        public static function getInstance():AudioManager {
            if (instance == null) {
                allowInstantiation = true;
                instance = new AudioManager();
                allowInstantiation = false;
            }
            return instance;
        }

        public function addSound(soundClass:Class, soundName:String):void {
            var sound:Sound = new soundClass();
            var gameSound:GameSound = new GameSound();
            gameSound.createFromSound(sound);
            sounds.push(gameSound);
            soundNames.push(soundName);
        }

        public function getSoundByID(soundID:uint):GameSound {
            return sounds[soundID];
        }

        public function getSoundByName(soundName:String):GameSound {
            var i:int = soundNames.indexOf(soundName);
            if(i > -1) {
                return sounds[i];
            }
            trace("Unable to find sound:", soundName);
            return null;
        }

        public function initAudioReader():void {
            audioReader = new AudioReader();
            audioReader.init();
        }

        public function changeLoop(soundName:String):void {
            if(currentLoop != null) currentLoop.stop();

            var newLoop:GameSound;
            newLoop = getSoundByName(soundName);

            currentLoop = newLoop;
            currentLoop.play(0, 999999);
        }

        public function getCurrentLoop():GameSound {
            return currentLoop;
        }

        public function stopLoop():void {
            if(currentLoop != null){
                currentLoop.stop();
                currentLoop = null;
            }
        }

        public function playSound(soundName:String):SoundChannel {
            return getSoundByName(soundName).play();
        }

        public function toggleMute():void {
            toggleSound();
            toggleMusic();
        }

        public function toggleSound():void {
            soundOff = (soundOff) ? false : true;
        }

        public function toggleMusic():void {
            musicOff = (musicOff) ? false : true;
        }

        public function update():void {
            if(Keyboard.isKeyDown(Key.M)) {
                toggleMute();
            }
            if(currentLoop != null) {
                if(musicOff) {
                    if(!currentLoop.muted){
                        currentLoop.mute();
                    }
                }
                if(!musicOff) {
                    if(currentLoop.muted) {
                        currentLoop.play(currentLoop.savedPosition, 99999);
                    }
                }
            }
        }

    }

}