using UnityEngine;
using UnityEngine.Events;

[DisallowMultipleComponent]
public class MemoryPiecePickup : MonoBehaviour
{
    [Header("Reference")]
    [SerializeField] private MemoryProgressManager memoryProgressManager;

    [Header("Settings")]
    [SerializeField] private int amount = 1;
    [SerializeField] private bool destroyAfterPickup = false;
    [Tooltip("Destroy After Pickup이 꺼져 있을 때, 획득 후 오브젝트를 비활성화합니다.")]
    [SerializeField] private bool disableAfterPickup = true;
    [SerializeField] private bool autoFindManager = true;
    [SerializeField] private string playerTag = "Player";
    [Tooltip("Player Tag가 비어 있을 때 아무 Collider나 획득을 허용합니다. 테스트용이 아니면 끄는 것을 추천합니다.")]
    [SerializeField] private bool allowPickupWhenPlayerTagEmpty = false;

    [Header("Events")]
    public UnityEvent onPickedUp = new UnityEvent();
    public UnityEvent onPickupFailed = new UnityEvent();

    private bool pickedUp;

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

    public void PickUp()
    {
        TryPickUp();
    }

    public bool TryPickUp()
    {
        if (pickedUp)
            return false;

        if (memoryProgressManager == null)
        {
            Debug.LogWarning("[MemoryPiecePickup] MemoryProgressManager가 연결되지 않았습니다.", this);
            onPickupFailed?.Invoke();
            return false;
        }

        int addedAmount = memoryProgressManager.AddMemoryPiece(amount);

        if (addedAmount <= 0)
        {
            onPickupFailed?.Invoke();
            return false;
        }

        pickedUp = true;
        onPickedUp?.Invoke();

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

        return true;
    }

    public void ResetPickup()
    {
        pickedUp = false;
        gameObject.SetActive(true);
    }

    public void SetMemoryProgressManager(MemoryProgressManager manager)
    {
        memoryProgressManager = manager;
    }

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

        if (IsPlayerCollider(other))
            TryPickUp();
    }

    private bool IsPlayerCollider(Collider other)
    {
        if (other == null)
            return false;

        if (string.IsNullOrWhiteSpace(playerTag))
            return allowPickupWhenPlayerTagEmpty;

        return other.CompareTag(playerTag);
    }

#if UNITY_EDITOR
    private void OnValidate()
    {
        amount = Mathf.Max(1, amount);

        if (string.IsNullOrWhiteSpace(playerTag) && !allowPickupWhenPlayerTagEmpty)
        {
            Debug.LogWarning("MemoryPiecePickup: Player Tag가 비어 있고 Allow Pickup When Player Tag Empty가 꺼져 있습니다. 이 상태에서는 트리거 획득이 작동하지 않습니다.", this);
        }

        if (destroyAfterPickup && disableAfterPickup)
        {
            Debug.LogWarning("MemoryPiecePickup: Destroy After Pickup이 켜져 있으면 Disable After Pickup은 의미가 없습니다.", this);
        }
    }
#endif
}