using UnityEngine;
using System;
using System.Collections; // ⭐ IEnumerator 사용을 위해 추가

public class PlayerHealth : MonoBehaviour, IDamageable
{
    [SerializeField] private Stats stats;
    [SerializeField] private Animator animator;

    public bool IsDead { get; private set; }
    public bool isHit { get; private set; }
    public bool isInvincible; // 대시 중 무적 플래그

    public event Action OnHit, OnDead;
    public event Action<float, float> OnHealthChanged;

    private float _currentHealth;

    // ⭐ [수정] Start를 코루틴으로 변경하여 실행 순서 문제를 해결합니다.
    private IEnumerator Start()
    {
        // 모든 오브젝트가 깨어날 때까지 한 프레임 기다립니다.
        yield return null;

        if (stats != null)
        {
            _currentHealth = stats.MaxHealth;
            // 이제 UI가 확실히 준비되었으므로 수치를 전달합니다.
            OnHealthChanged?.Invoke(_currentHealth, stats.MaxHealth);
            Debug.Log($"<color=cyan>[UI Sync]</color> 초기 체력 설정 완료: {_currentHealth}/{stats.MaxHealth}");
        }
        if (animator == null) animator = GetComponent<Animator>();
    }

    public void RefreshHealthUI()
    {
        if (stats != null)
        {
            _currentHealth = Mathf.Min(_currentHealth, stats.MaxHealth);
            OnHealthChanged?.Invoke(_currentHealth, stats.MaxHealth);
        }
    }

    public void TakeDamage(float amount)
    {
        if (isInvincible || IsDead) return;
        _currentHealth = Mathf.Max(0, _currentHealth - amount);
        OnHealthChanged?.Invoke(_currentHealth, stats.MaxHealth);
        OnHit?.Invoke();
        if (!IsDead) StartHit();
        if (_currentHealth <= 0) Die();
    }

    private void StartHit()
    {
        isHit = true;
        if (animator != null) animator.Play("HitAnime", 0, 0f);
        CancelInvoke(nameof(OnHitEnd));
        Invoke(nameof(OnHitEnd), 0.25f);
    }
    public void OnHitEnd() { isHit = false; }

    private void Die() { IsDead = true; Cursor.visible = true; Cursor.lockState = CursorLockMode.None; OnDead?.Invoke(); }
    public void Heal(float amount) { if (IsDead) return; _currentHealth = Mathf.Min(_currentHealth + amount, stats.MaxHealth); OnHealthChanged?.Invoke(_currentHealth, stats.MaxHealth); }
}