using UnityEngine;
using UnityEngine.Events;

/// <summary>
/// 월드에 떠 있는 아이템 오브젝트를 직접 주울 때 사용합니다.
/// Collider의 Is Trigger를 켜고, Player 태그와 충돌하면 인벤토리에 추가됩니다.
/// </summary>
[DisallowMultipleComponent]
public class ItemPickup : MonoBehaviour
{
    [Header("Reference")]
    [SerializeField] private InventoryManager inventoryManager;

    [Header("Item")]
    [SerializeField] private InventoryItemType itemType = InventoryItemType.Fish;
    [SerializeField] private int amount = 1;

    [Header("Pickup Settings")]
    [SerializeField] private string playerTag = "Player";
    [SerializeField] private bool destroyAfterPickup = true;
    [SerializeField] private bool disableAfterPickup = false;
    [SerializeField] private bool autoFindManager = true;

    [Header("Events")]
    public UnityEvent onPickedUp;

    [Header("Debug")]
    [SerializeField] private bool showDebugLog = true;

    private bool pickedUp;

    private void Awake()
    {
        if (inventoryManager == null && autoFindManager)
            inventoryManager = FindFirstObjectByType<InventoryManager>();
    }

    private void OnTriggerEnter(Collider other)
    {
        if (pickedUp)
            return;

        if (!other.CompareTag(playerTag))
            return;

        PickUp();
    }

    public void PickUp()
    {
        if (pickedUp)
            return;

        pickedUp = true;

        if (inventoryManager == null)
        {
            Debug.LogWarning("[ItemPickup] InventoryManager가 연결되지 않았습니다.");
            pickedUp = false;
            return;
        }

        int addAmount = Mathf.Max(1, amount);
        inventoryManager.AddItem(itemType, addAmount);
        onPickedUp?.Invoke();

        if (showDebugLog)
            Debug.Log($"[ItemPickup] {itemType} +{addAmount}");

        if (destroyAfterPickup)
            Destroy(gameObject);
        else if (disableAfterPickup)
            gameObject.SetActive(false);
    }

    public void ResetPickup()
    {
        pickedUp = false;
    }
}