using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class DropZone : MonoBehaviour, IDropHandler, IPointerEnterHandler, IPointerExitHandler
{
    public int slotIndex;
    public DraggableCard currentCard;

    private Image image;

    void Awake()
    {
        image = GetComponent<Image>();
    }

    public void OnDrop(PointerEventData eventData)
    {
        DraggableCard card = eventData.pointerDrag?.GetComponent<DraggableCard>();
        if (card == null) return;

        if (currentCard != null && currentCard != card)
            currentCard.ReturnToOriginal();

        currentCard = card;
        card.transform.SetParent(transform);
        card.GetComponent<RectTransform>().anchoredPosition = Vector2.zero;
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        if (image != null)
            image.color = new Color(1f, 1f, 1f, 0.5f);
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        if (image != null)
            image.color = new Color(1f, 1f, 1f, 0.2f);
    }

    public void SetCorrect()
    {
        if (image != null) image.color = new Color(0f, 1f, 0f, 0.5f);
    }

    public void SetWrong()
    {
        if (image != null) image.color = new Color(1f, 0f, 0f, 0.5f);
    }

    public void ResetColor()
    {
        if (image != null) image.color = new Color(1f, 1f, 1f, 0.2f);
        currentCard = null;
    }
}