using TMPro;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.InputSystem;

[RequireComponent(typeof(Collider))]
public class WallInteractButton : MonoBehaviour
{
    [Header("Interaction")]
    [Tooltip("Optional Input Action. If empty, fallback key will be used.")]
    [SerializeField] private InputActionReference interactAction;

    [Tooltip("Used only if no Input Action is assigned.")]
    [SerializeField] private Key fallbackKey = Key.E;

    [SerializeField] private bool oneShot = false;

    [Header("Prompt")]
    [SerializeField] private TMP_Text promptText;
    [SerializeField] private string promptMessage = "Press E to interact";

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

    private bool m_playerInRange;
    private bool m_hasInteracted;

    private void Reset()
    {
        Collider col = GetComponent<Collider>();
        col.isTrigger = true;
    }

    private void OnEnable()
    {
        if (interactAction != null)
        {
            interactAction.action.Enable();
        }
    }

    private void OnDisable()
    {
        if (interactAction != null)
        {
            interactAction.action.Disable();
        }
    }

    private void Start()
    {
        UpdatePrompt(false);
    }

    private void Update()
    {
        if (!m_playerInRange)
            return;

        if (oneShot && m_hasInteracted)
            return;

        if (WasInteractPressed())
        {
            m_hasInteracted = true;
            OnInteract?.Invoke();
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if (!IsPlayer(other))
            return;

        m_playerInRange = true;
        UpdatePrompt(true);
    }

    private void OnTriggerExit(Collider other)
    {
        if (!IsPlayer(other))
            return;

        m_playerInRange = false;
        UpdatePrompt(false);
    }

    private bool WasInteractPressed()
    {
        if (interactAction != null)
            return interactAction.action.WasPressedThisFrame() || interactAction.action.WasPerformedThisFrame();

        return Keyboard.current != null && Keyboard.current[fallbackKey].wasPressedThisFrame;
    }

    private bool IsPlayer(Collider other)
    {
        return other.CompareTag("Player") || other.GetComponentInParent<PlayerMovement>() != null;
    }

    private void UpdatePrompt(bool visible)
    {
        if (promptText == null)
            return;

        promptText.text = promptMessage;
        promptText.gameObject.SetActive(visible);
    }
}