using TMPro;
using UnityEngine;
using System;
using UniRx;

public class BingoTimer : MonoBehaviour
{
    [SerializeField] private TMP_Text textTimer;
    private DateTime _expireTime;
    private DateTime _startTime;
    private TimeSpan RemainingTime => _expireTime - ZZTimeHelper.UtcNow();
    private Action _onExpire;
    private bool IsActive
    {
        get
        {
            var res = _expireTime > ZZTimeHelper.UtcNow();
            if (_startTime != null)
                res &= _startTime < ZZTimeHelper.UtcNow();
            return res;
        }
    }

    public void Init(ITimerContext ctx)
    {
        _expireTime = ctx.ExpiryTime;
        _startTime = ctx.StartTime;
        _onExpire = ctx.OnExpire;
        UpdateTimer();
        Observable.Interval(TimeSpan.FromSeconds(1)).Subscribe(UpdateTimer).AddTo(this);
    }

    private void UpdateTimer(long _ = 0L)
    {
        textTimer.text = ConvertTools.ConvertTime2(RemainingTime);
        if (!IsActive)
        {
            _onExpire?.Invoke();
        }
    }

    private void Reset()
    {
        textTimer = GetComponent<TMP_Text>();
    }
}

public class TimerContext : ITimerContext
{
    public DateTime ExpiryTime { get; set; }
    public DateTime StartTime { get; set; }
    public Action OnExpire { get; set; }
}

public interface ITimerContext
{
    public DateTime ExpiryTime { get; }
    public DateTime StartTime { get; }
    public Action OnExpire { get; }
}