using UnityEngine;
using System.Collections;

public class LockSwitch : Predicate {
	public string keyName = "";
	public string keyClass = "Key";
	public string unlockText = "unlock";
	public PlayerSensor sensor;
	public bool locked = true;
	private GameAction _action;
	private Notification _notify;

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


	// Use this for initialization
	void Start () {
		sensor.PlayerEnter += HandlePlayerEnter;
		sensor.PlayerExit += HandlePlayerExit;
		_action = new GameAction(gameObject, "use " + keyName);
		_notify = new Notification(){source = gameObject};

		_notify.text = NotificationsController.AppendString(_notify.text, "Use ", NotificationElement.Text);
		_notify.text = NotificationsController.AppendString(_notify.text, keyName, NotificationElement.Item);
		_notify.text = NotificationsController.AppendString(_notify.text, " to ", NotificationElement.Text);
		_notify.text = NotificationsController.AppendString(_notify.text, unlockText, NotificationElement.ImportantText);
	}

	void HandlePlayerEnter (PlayerSensor s, GameObject player)
	{
		if(locked){
			var inventory = player.GetComponent<Inventory>();
			if((inventory != null) && (inventory.QueryItem(keyName, keyClass, null) != null)){
				ActionController.AddAction(_action);
			}else{
				NotificationsController.AddNotification(_notify);
			}
		}
	}

	void OnAction(ActionArgs a){
		if(locked){
			locked = false;
			ActionController.RemoveAction(_action);
			NotificationsController.RemoveNotification(_notify);
		}
	}

	void HandlePlayerExit (PlayerSensor s, GameObject player)
	{
		ActionController.RemoveAction(_action);
		NotificationsController.RemoveNotification(_notify);
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}