using UnityEngine;
using UnityEngine.EventSystems;

public class DragDropItem : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerClickHandler
{
    public InventoryItem item;
    private InventoryUIController inventoryUI;
    private CharacterInGroup owner;
    
    private float lastClickTime = 0f;
    private const float doubleClickThreshold = 0.3f;

    public void Init(InventoryItem i, InventoryUIController ui, CharacterInGroup chara)
    {
        item = i;
        inventoryUI = ui;
        owner = chara;
    }
    
    public void OnPointerClick(PointerEventData eventData)
    {
        // Double-click to use consumable items
        if (Time.time - lastClickTime < doubleClickThreshold)
        {
            if (item != null && item.itemType == ItemType.Consumable)
            {
                item.Use(owner);
                
                // Remove item if quantity is 0
                if (item.quantity <= 0)
                {
                    owner.inventory.items.Remove(item);
                }
                
                inventoryUI.Refresh();
            }
        }
        lastClickTime = Time.time;
    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        transform.SetParent(transform.root); // float au-dessus
    }

    public void OnDrag(PointerEventData eventData)
    {
        transform.position = eventData.position;
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        GameObject dropTarget = eventData.pointerEnter;
        if (dropTarget != null && dropTarget.CompareTag("Portrait"))
        {
            CharacterUIController receiverUI = dropTarget.GetComponentInParent<CharacterUIController>();
            if (receiverUI != null && receiverUI.Character != owner)
            {
                inventoryUI.TransferItem(item, receiverUI.Character);
            }
        }

        inventoryUI.Refresh(); // Retour à sa place si non transféré
    }
}