using System;
using UnityEngine;

public class GameTimer : MonoBehaviour
{
    [SerializeField, Min(0f)] private float _timeLimit = 180f;
    [SerializeField] private bool _autoStart = true;

    public event Action<float> OnTick;
    public event Action OnTimeUp;

    private float _remaining;
    private bool _running;

    public float Remaining => _remaining;
    public float TimeLimit => _timeLimit;
    public bool IsRunning => _running;

    private void Start()
    {
        _remaining = _timeLimit;
        OnTick?.Invoke(_remaining);
        if (_autoStart) StartTimer();
    }

    private void Update()
    {
        if (!_running) return;

        _remaining -= Time.deltaTime;
        if (_remaining <= 0f)
        {
            _remaining = 0f;
            _running = false;
            OnTick?.Invoke(_remaining);
            OnTimeUp?.Invoke();
            return;
        }
        OnTick?.Invoke(_remaining);
    }

    public void StartTimer() => _running = true;
    public void StopTimer() => _running = false;
}