using System;
using UnityEngine;
using UnityEngine.EventSystems;

public class InventorySlot : ItemStorageSlot, IPointerClickHandler {
    private Inventory _inventory;
    private Shop _shop;
    private PlayerController _playerController;

    private void Start() {
        _inventory = Inventory.instance;
        _shop = Shop.instance;
        _playerController = PlayerController.instance;
    }

    /**
     * Gets called when the Inventory Slot is clicked
     */
    public override void UseItem() {
        if(Item) {
            if(Item.GetType() == typeof(UsableItem)) {
                ((UsableItem)Item).Select();
                Debug.Log("using " + Item.displayName);
            } else {
                Debug.Log("Item not usable " + Item.displayName);
            }
        }
    }

    /**
     * Sells the Item for the Item Sell Price and puts it in the Shop if the selling was a mistake
     */
    private void SellItem() {
        if(Item){
            _playerController.ChangeMoney(Item.SellPrice);
            _shop.AddItem(Item, 1);
            _inventory.RemoveItem(Item, 1); // TODO: somehow sell more than 1 Item
        }
    }

    /**
     * Gets called when the Inventory Slot gets clicked on
     */
    public void OnPointerClick(PointerEventData eventData) {
        // When clicked on with right Mouse Button sell the Item
        if(eventData.button == PointerEventData.InputButton.Right) {
            SellItem();
        }
    }
}