using System.Collections;
using System.Collections.Generic;
using System.Collections.Concurrent;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.TestTools;
namespace BITKit
{
    using SubSystems;
    public class BITTimer
    {
        internal BITTimer() { }
        public static BITTimer Create(float addTime = 1, UnityAction action = null)
        {
            BITTimer timer = new();
            timer.excuteTime = Utility.Time.time + addTime;
            timer.onExcute = action;
            TimerSystem.queue.Enqueue(timer);
            return timer;
        }
        public float excuteTime;
        public bool isActive { get; internal set; }
        public UnityAction onExcute;
        public void Cancel()
        {
            isActive = false;
        }
    }
}
namespace BITKit.SubSystems
{
    public class TimerSystem : SubBITSystem
    {
        internal static List<BITTimer> timers = new();
        internal static ConcurrentQueue<BITTimer> queue = new();
        public override void OnUpdate(float deltaTime)
        {
            List<BITTimer> nexts = new();
            lock (timers)
            {
                timers.ForEach(x =>
                            {
                                if (x.excuteTime > Utility.Time.time)
                                {
                                    if (x.onExcute is not null) x.onExcute();
                                    x.isActive = false;
                                }
                                else
                                {
                                    nexts.Add(x);
                                }
                            });
                while (queue.TryDequeue(out var timer))
                {
                    nexts.Add(timer);
                }
                timers = nexts;
            }
        }
    }
}