using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UIElements;

public class InfoBox : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
{
    // public Vector3 worldOffset = new Vector3(0, 1f, 0);
    public Vector3 worldOffset = new Vector3(0, 0, 0);

    public UIDocument uiDocument;
    public bool AlwaysVisible;

    private Camera mainCamera;
    private IInventoryHolder inventoryHolder;
    private Label infoBox;

    void Start()
    {
        mainCamera = Camera.main;

        if (uiDocument != null)
        {
            infoBox = uiDocument.rootVisualElement.Q<Label>("InfoBox");
            inventoryHolder = GetComponent<IInventoryHolder>();
        }
    }

    void Update()
    {
        // if (infoBox != null)
        {
            // Convert world position to screen space
            Vector3 screenPos = mainCamera.WorldToScreenPoint(transform.position + worldOffset);

            // Update panel position (UI Toolkit uses top-left origin)
            infoBox.style.left = screenPos.x;
            infoBox.style.top = Screen.height - screenPos.y;
            infoBox.style.visibility = AlwaysVisible ? Visibility.Visible : Visibility.Hidden;

            UpdateText();
        }
    }

    void UpdateText()
    {
        // if (infoBox != null)
        {
            infoBox.text = inventoryHolder.Inventory.ToString();
        }
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        infoBox.style.visibility = Visibility.Visible;
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        if (!AlwaysVisible)
            infoBox.style.visibility = Visibility.Hidden;
    }
}