using UnityEngine;
using UnityEngine.UIElements;

public class UIToolkitInfoPanel : MonoBehaviour
{
    public Transform targetObject;
    public Vector3 worldOffset = new Vector3(0, 1f, 0);
    
    private UIDocument uiDocument;
    private VisualElement infoPanel;
    private Label infoLabel;
    private Camera mainCamera;
    
    void Start()
    {
        uiDocument = GetComponent<UIDocument>();
        mainCamera = Camera.main;
        
        if (uiDocument != null)
        {
            infoPanel = uiDocument.rootVisualElement.Q<VisualElement>("InfoPanel");
            infoLabel = uiDocument.rootVisualElement.Q<Label>("InfoLabel");
        }
    }
    
    void Update()
    {
        if (targetObject != null && infoPanel != null)
        {
            // Convert world position to screen space
            Vector3 screenPos = mainCamera.WorldToScreenPoint(
                targetObject.position + worldOffset
            );
            
            // Update panel position (UI Toolkit uses top-left origin)
            infoPanel.style.left = screenPos.x;
            infoPanel.style.top = Screen.height - screenPos.y;
            
            // Update content
            UpdateInfoContent();
        }
    }
    
    void UpdateInfoContent()
    {
        if (infoLabel != null)
        {
            infoLabel.text = $"{targetObject.name}\nPosition: {targetObject.position}";
        }
    }
}