using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

public class UIManager : MonoBehaviour
{
    private static UIManager instance;

    private UIInteractable currentSelectedUIInteractable;
    private BlockData currentSelectedData;


    public UnityEvent<BlockData> onSelectEvent;

    private CategoryData currentCategory;

    private void Awake()
    {
        if (instance == null) instance = this;
        else Destroy(this.gameObject);
    }

    public static UIManager getInstance() => instance;

    // Selection
    public void selectUIInteractable(UIInteractable uiInteractable)
    {
        if (currentSelectedUIInteractable != null)
            currentSelectedUIInteractable.onSelectExit();

        currentSelectedUIInteractable = uiInteractable;
        currentSelectedData = uiInteractable.getAssociatedBlockData();

        onSelectEvent.Invoke(currentSelectedData);
    }

    public void deselectUIInteractable()
    {
        if (currentSelectedUIInteractable != null)
            currentSelectedUIInteractable.onSelectExit();

        currentSelectedUIInteractable = null;
        currentSelectedData = null;
    }

}