using UnityEngine;

[RequireComponent(typeof(Collider2D))]
public class Enemy : MonoBehaviour, IDamageable
{
    [Header("Stats")]
    [SerializeField] private int _maxHealth = 30;

    [Header("Hit Feedback")]
    [SerializeField] private float _hitFlashDuration = 0.1f;
    [SerializeField] private Color _hitFlashColor = Color.red;

    private int _currentHealth;
    private SpriteRenderer _spriteRenderer;
    private Color _originalColor;
    private float _flashTimer;

    private void Awake()
    {
        _currentHealth = _maxHealth;
        _spriteRenderer = GetComponentInChildren<SpriteRenderer>();
        if (_spriteRenderer != null)
            _originalColor = _spriteRenderer.color;
    }

    private void Update()
    {
        if (_flashTimer > 0f)
        {
            _flashTimer -= Time.deltaTime;
            if (_flashTimer <= 0f && _spriteRenderer != null)
                _spriteRenderer.color = _originalColor;
        }
    }

    public void TakeDamage(int amount)
    {
        if (_currentHealth <= 0) return;

        _currentHealth -= amount;
        Debug.Log($"{name} 피격: -{amount} (HP: {_currentHealth}/{_maxHealth})");

        if (_spriteRenderer != null)
        {
            _spriteRenderer.color = _hitFlashColor;
            _flashTimer = _hitFlashDuration;
        }

        if (_currentHealth <= 0)
            Die();
    }

    private void Die()
    {
        Debug.Log($"{name} 사망");
        Destroy(gameObject);
    }
}