/*===============================================================
Product:    Unity3dTips&Tricks
Developer:  Dimitry Pixeye - pixeye@hbrew.store
Company:    Homebrew - http://hbrew.store
Date:       08/10/2017 21:54
================================================================*/

using System;
using UniRx;
using UnityEngine;

namespace Homebrew{

public class Timer : IDisposable
{
    public float timer;
    private Action actionComplete;
    private float finishTime;
    private bool isRunning;
    private IDisposable observerDisposable;
    
    public Timer(float finishTime, Action actionComplete)
    {
        this.finishTime = finishTime;
        this.actionComplete = actionComplete;
        observerDisposable =  Observable.EveryGameObjectUpdate().
            Where(x => isRunning).Subscribe(_=>Update());
        
    }
    public void Restart()
    {
        isRunning =true;
        timer = 0.0f;
    }
    public void ShutDown()
    {
        isRunning = false;
    }

    private void Update()
    {
        timer += Time.deltaTime;
        if (timer < finishTime) return;
        
            timer = 0.0f;
            isRunning = false;
            actionComplete();
    }
    public void Dispose()
    {
        observerDisposable.Dispose();
        observerDisposable = null;
        actionComplete = null;
    }
}
}