using System;
using AibisDream.Kit;
using UnityEngine;

namespace AibisDream.Framework
{
    /// <summary>
    /// 实现一个类似沙漏的功能，给一个命令就开始倒计时，倒计时结束执行命令
    /// </summary>
    public class SandClock
    {
        public float CountDownTime { get; private set; }
        public float CurTime { get; private set; }
        private readonly Action _endAction;

        public SandClock(float duration, Action endAction)
        {
            CountDownTime = duration;
            _endAction = endAction;
        }

        public void Start()
        {
            ActionKitMonoBehaviourEvents.Instance.OnUpdate.Register(OnUpdate);
            CurTime = 0;
        }

        public void Stop()
        {
            CurTime = 0;
            ActionKitMonoBehaviourEvents.Instance.OnUpdate.UnRegister(OnUpdate);
            _endAction?.Invoke();
        }

        public void Pause()
        {
            ActionKitMonoBehaviourEvents.Instance.OnUpdate.UnRegister(OnUpdate);
        }

        public void Continue()
        {
            ActionKitMonoBehaviourEvents.Instance.OnUpdate.Register(OnUpdate);
        }

        private void OnUpdate()
        {
            CurTime += Time.deltaTime;
            if (CurTime >= CountDownTime)
            {
                Stop();
            }
        }
    }
}