using UnityEngine;
using System.Collections.Generic;

public class ShelfInteraction : MonoBehaviour
{
    public Transform[] stackPoints; // Assign from Shelf or inspector
    private List<GameObject> stackedItems = new List<GameObject>();

    // Try to stack an item at a specific stack point index
    public bool TryStackItem(GameObject item, int stackPointIndex)
    {
        if (stackPointIndex < 0 || stackPointIndex >= stackPoints.Length)
            return false;

        // Check if the stack point is already occupied
        foreach (var stacked in stackedItems)
        {
            if (stacked != null && stacked.transform.position == stackPoints[stackPointIndex].position)
                return false; // Occupied
        }

        // Place the item
        item.transform.position = stackPoints[stackPointIndex].position;
        item.transform.rotation = stackPoints[stackPointIndex].rotation;
        stackedItems.Add(item);
        return true;
    }

    // Call this when removing or spoiling an item
    public void RemoveStackedItem(GameObject item)
    {
        if (stackedItems.Contains(item))
            stackedItems.Remove(item);
    }

    // For ghost preview: returns true if the stack point is occupied
    public bool IsStackPointOccupied(int stackPointIndex)
    {
        foreach (var stacked in stackedItems)
        {
            if (stacked != null && stacked.transform.position == stackPoints[stackPointIndex].position)
                return true;
        }
        return false;
    }
}