using UnityEngine;

public class PlayerInteraction : MonoBehaviour
{
    [Header("--- 설정 ---")]
    [SerializeField] private float interactRange = 3f;
    [SerializeField] private LayerMask itemLayer;
    [SerializeField] private Transform handSlot;
    [SerializeField] private Stats playerStats;

    private EquippableItem _currentWeapon;
    public EquippableItem CurrentWeapon => _currentWeapon;

    public void TryInteract()
    {
        Collider[] hits = Physics.OverlapSphere(transform.position, interactRange, itemLayer);
        foreach (var hit in hits)
        {
            // [MODIFIED] ArrowItem 제거 → ArrowPickup으로 통일
            if (hit.TryGetComponent<ArrowPickup>(out var arrowPickup))
            {
                PickupArrow(arrowPickup);
                break;
            }

            if (hit.TryGetComponent<EquippableItem>(out var item))
            {
                EquipWeapon(item);
                break;
            }

            if (hit.TryGetComponent<HealthPotion>(out var potion))
            {
                potion.Use(GetComponent<PlayerHealth>());
                break;
            }

            if (hit.TryGetComponent<HealthAltar>(out var altar))
            {
                altar.Use(GetComponent<PlayerHealth>());
                break;
            }
        }
    }

    /// <summary>
    /// [MODIFIED] ArrowPickup을 직접 처리
    /// 기존: ArrowItem 타입 → 변경: ArrowPickup 타입으로 통일
    /// </summary>
    private void PickupArrow(ArrowPickup arrowPickup)
    {
        if (arrowPickup == null) return;

        PlayerAttack playerAttack = GetComponent<PlayerAttack>();
        if (playerAttack != null)
        {
            // ArrowPickup.Pickup() 내부에서
            // playerAttack.SetCurrentArrow(ArrowData)를 호출합니다
            arrowPickup.Pickup(playerAttack);
        }
    }

    private void EquipWeapon(EquippableItem item)
    {
        if (_currentWeapon != null) _currentWeapon.OnDropped(transform.forward);
        _currentWeapon = item;
        _currentWeapon.OnPickedUp(handSlot);

        if (playerStats != null)
        {
            playerStats.weaponDamage = item.Config.BaseDamage;
        }

        FindObjectOfType<PlayerStatsUI>()?.UpdateStatTexts();
    }

    public void ClearCurrentWeapon()
    {
        _currentWeapon = null;
        if (playerStats != null)
        {
            playerStats.weaponDamage = 0;
            FindObjectOfType<PlayerStatsUI>()?.UpdateStatTexts();
        }

        // [NEW] 무기 해제 시 화살도 초기화
        PlayerAttack playerAttack = GetComponent<PlayerAttack>();
        if (playerAttack != null)
        {
            playerAttack.ResetArrow();
        }
    }
}