using Cysharp.Threading.Tasks;
using Gameplay;
using System;
using System.Text;

public class TimerText
{
    private TimerTextTimer _timerTextTimer;
    private TMPro.TextMeshProUGUI text;

    public void Init(TMPro.TextMeshProUGUI text)
    {
        if (_timerTextTimer == null)
        {
            _timerTextTimer = new TimerTextTimer();           
        }

        this.text = text;
    }

    public void SetTimer(float time)
    {
        if (_timerTextTimer == null || text == null)
        {
            DebugUtil.LogError("暂未初始化TimerText, 请先调用Init方法进行初始化！");
            return;
        }
        _timerTextTimer.SetTimer(time);
    }

    public void StartTimer()
    {
        _timerTextTimer.StartTimer();
        _timerTextTimer.OnValueChanged += OnValueChange;
    }

    public void StopTimer()
    {
        _timerTextTimer.StopTimer();
        _timerTextTimer.OnValueChanged -= OnValueChange;
    }

    void OnValueChange(float time)
    {
        TimeSpan remains = TimeSpan.FromSeconds(time);
        var day = remains.Days;
        var hour = remains.Hours;
        var minute = remains.Minutes;
        var second = remains.Seconds;



        StringBuilder sb = new StringBuilder();
        sb.Append(CommonUtils.GetLocalizeText("剩余"));

        if (day > 0)
            sb.Append($"{day}d {hour:D2}h");
        else if (hour > 0)
            sb.Append($"{hour:D2}h {minute:D2}m {second:D2}s");
        else if (minute > 0)
            sb.Append($"{minute:D2}m {second:D2}s");
        else
            sb.Append($"{second:D2}s");

        text.text = sb.ToString();
    }
}

public class TimerTextTimer
{
    private float RemainingTime;
    private bool IsRunning;

    public delegate void OnValueChange(float time);
    public event OnValueChange OnValueChanged;

    public delegate void OnTimerEnd();
    public event OnTimerEnd OnTimerEndEvent;

    public void SetTimer(float time)
    {
        RemainingTime = time;
    }

    public void StartTimer()
    {
        if (IsRunning)
            return;
        IsRunning = true;
        CoreTimer();
    }

    public void StopTimer()
    {
        IsRunning = false;
    }

    async void CoreTimer()
    {
        while (IsRunning)
        {
            await UniTask.Delay(1000);
            RemainingTime--;
            OnValueChanged?.Invoke(RemainingTime);
            if (RemainingTime <= 0)
            {
                StopTimer();
                OnTimerEndEvent?.Invoke();
            }
        }
    }
}