using System;
using System.Collections;
using System.Collections.Generic;
using System.Timers;
using Timer = System.Timers.Timer;
namespace BITKit
{
    public class DataPlayer<T> : Player<T>
    {
        public int index;
        public string timeFormat = "mm:ss:fff";
        public event Action<T> output;
        public event Action<float> onProgess;
        public event Action<string> onSetTotalTime;
        public event Action<string> onTime;
        float totalTime => (float)list.Count / frameRate;
        protected override void OnUpdate()
        {
            if (list.Count > 0)
            {
                var progess = (float)index / (float)list.Count;
                if (state is PlayerState.Playing)
                    index = Math.Clamp(++index, 0, list.Count + 32);

                if (index > list.Count)
                {
                    if (index - list.Count > frameRate / 2)
                        Stop();
                }
                else
                {
                    output?.Invoke(list[index]);
                    onProgess?.Invoke(progess);
                    onTime?.Invoke(GetTime(totalTime * progess));
                }
            }
        }
        public void Set(List<T> t)
        {
            Stop();
            this.list = new(t);
        }
        public void SetProgress(float progress)
        {
            index = (int)(list.Count * progress);
            //BIT4Log.Log<DataPlayer<T>>($"设置时间为:{progress}\tIndex:{index}");
        }
        public void Offset(float time)
        {
            //32+1/30;
            index += (int)(time * frameRate);
        }
        protected override void OnStart()
        {
            index = 0;
            onSetTotalTime?.Invoke(GetTime(totalTime));
        }
        protected override void OnStop()
        {
            base.OnStop();
            onTime.Invoke(GetTime(totalTime));
            onProgess?.Invoke(1);
        }
        string GetTime(float sec)
        {
            return new DateTime().AddSeconds(sec).ToString(timeFormat);
        }
    }
}