using System;
using UnityEngine;
using UnityEngine.Events;

public class Clock : MonoBehaviour
{
    public bool stopped { get; private set; }

    public DateTime alarmTime {
        get; set;
    }

    UnityAction alarmCallBack;

    public void AddListener(UnityAction _action)
    {
        alarmCallBack += _action;
    }

    public void Stop()
    {
        stopped = true;
        GameObject.Destroy(this.gameObject);
    }

    private void Awake()
    {
        this.gameObject.hideFlags = HideFlags.HideInHierarchy;
    }

    private void LateUpdate()
    {
        if (System.DateTime.Now > alarmTime)
        {
            try
            {
                if (alarmCallBack != null)
                {
                    alarmCallBack();
                    alarmCallBack = null;
                }
            }
            catch (System.Exception ex)
            {
                DebugEx.Log(ex);
            }
            finally
            {
                Stop();
            }
        }

    }


    public static Clock Create(DateTime _alarmTime, UnityAction _action)
    {
        var carrier = new GameObject();
        GameObject.DontDestroyOnLoad(carrier);

        var clock = carrier.AddComponent<Clock>();
        clock.alarmTime = _alarmTime;
        clock.AddListener(_action);

        return clock;
    }

    public static Clock Create(int _seconds, UnityAction _action)
    {
        var carrier = new GameObject();
        GameObject.DontDestroyOnLoad(carrier);

        var clock = carrier.AddComponent<Clock>();
        clock.alarmTime = System.DateTime.Now + new TimeSpan(_seconds * TimeSpan.TicksPerSecond);
        clock.AddListener(_action);

        return clock;
    }

}