using UnityEngine;
using System.Collections;



/// <summary>
/// 
/// </summary>
public class TimerFunctionsClass : MonoBehaviour
{

    public delegate void OnTimerEvent();            //delegate type definition

    private OnTimerEvent CallBackFunction;          // the function that is called when the time is up
    private float OriginalTimeInterval;             // used for resetting
    private float TimeLeft;                         // used for counting down
    private bool Active = false;

    protected bool DestroyTimerOnTimeEnds = false;

    public string textTime = "";


    public float GetTimeLeft()
    {
        return TimeLeft;
    }

    // setup the timer: how long should the timer wait and which function should it call when the event is triggered
    public void SetTimer(float TimeInterval, OnTimerEvent NewCallBackFunction)
    {
        OriginalTimeInterval = TimeInterval;
        TimeLeft = TimeInterval;
        CallBackFunction = NewCallBackFunction;
    }


    // actually start the timer:
    public void StartTimer()
    {
        Active = true;
    }


    // I'm not using this, but whatever:
    public void StopTimer()
    {
        Active = false;
    }


    // ohwell
    public void ResetTimer()
    {
        TimeLeft = OriginalTimeInterval;
    }


    public void DestroyTimer()
    {
        Destroy(this);
    }


    // TimeLeft is decreased by Time.deltaTime every tick, if it hits 0 then the CallBackFunction is called
    public void Update()
    {
        
        if (Active)
        {
             
            TimeLeft -= Time.deltaTime;
            if (TimeLeft <= 0)
            {
                CallBackFunction();
                

                //si usage unique
                if (DestroyTimerOnTimeEnds)
                {
                    StopTimer();
                    DestroyTimer();
                }

            }
        }
    }

    

}