using UnityEngine;
using System.Collections;

public enum SwitchState{
	On,
	Off,
	Error
}

public class Switch : Predicate {
	protected override bool CheckInternal ()
	{
		return state == SwitchState.On;
	}

	protected override bool CheckInternal (object param)
	{
		return Check ();
	}


	public Color errorColor;
	public Color offColor;
	public Color onColor;
	public SwitchState state;
	private PlayerSensor _sensor;
	private Notification _notify;
	private GameAction _action;
	public string actionOn = "Switch ON";
	public string actionOff = "Switch OFF";
	public string errorNotify = "Switch not working";
	public AudioClip soundOn;
	public AudioClip soundOff;
	private AudioSource _audio;
	public bool interactive = true;
	public WaveController ledIntensityController;
	public Predicate interactivePredicate;
	private Led _led;

	// Use this for initialization
	void Start () {
		_action = new GameAction();
		_action.target = gameObject;
		_notify = new Notification();
		_notify.source = gameObject;
		_led = GetComponentInChildren<Led>();
		_led.color = errorColor;

		_sensor = GetComponentInChildren<PlayerSensor>();
		_sensor.PlayerEnter += HandlePlayerEnter;
		_sensor.PlayerExit += HandlePlayerExit;

		_audio = GetComponent<AudioSource>();
	}

	void SetState(SwitchState s){
		state = s;
		if(state == SwitchState.Off){
			_audio.PlayOneShot(soundOff);
		}else if(state == SwitchState.On){
			_audio.PlayOneShot(soundOn);
		}
	}

	void OnAction(ActionArgs a){
		if(state == SwitchState.On){
			SetState(SwitchState.Off);
		}else if(state == SwitchState.Off){
			SetState(SwitchState.On);
		}
	}

	void HandlePlayerEnter (PlayerSensor sensor, GameObject player)
	{
		if(interactive){
			NotificationsController.AddNotification(_notify);
			ActionController.AddAction(_action);
		}
	}

	void HandlePlayerExit (PlayerSensor sensor, GameObject player)
	{
		if(interactive){
			NotificationsController.RemoveNotification(_notify);
			ActionController.RemoveAction(_action);
		}
	}
	
	// Update is called once per frame
	void Update () {
		if(interactivePredicate != null){
			interactive = interactivePredicate.Check();
		}

		if(state == SwitchState.Error){
			_notify.text = errorNotify;
			_action.text = "";
		}else{
			if(state == SwitchState.On){
				_action.text = actionOff;
			}else{
				_action.text = actionOn;
			}
			_notify.text = "";
		}

		Color c;
		if(state == SwitchState.On){
			c = onColor;
		}else if(state == SwitchState.Off){
			c = offColor;
		}else{
			c = errorColor;
		}
		_led.color = c;

		float intensity = ledIntensityController == null ? 0 : ledIntensityController.Get();
       
		_led.intensity = Mathf.Clamp(intensity, 0.5f, 1.0f);
	}
}