using System.Collections.Generic;
using UnityEngine;
using System;
using UnityEngine.InputSystem;

[Serializable]
public class Basket
{
    //Variables
    private float currentValue; //Holds basket current value;
    private Dictionary<int, int> basketItems = new Dictionary<int, int>(); //Holds the current products the customer already has and it's quantity

    //Just for Debugging purposes
    [Header("Basket Items")]
    [SerializeField] private List<BasketItem> items = new List<BasketItem>();

    [Serializable]
    private struct BasketItem
    {
        [SerializeField] public int productID;
        [SerializeField] public int amount;

        public BasketItem(int productID, int amount)
        { 
            this.productID = productID;
            this.amount = amount;
        }
    }

    //Properties
    public float CurrentValue => currentValue;

    //Constructor
    public Basket()
    {

    }


    //Gets the product value
    private float GetProductValue(int id) => ShopManager.Catalog.ContainsKey(id) == true ? ShopManager.Catalog[id] : 0;

    //Adds an Item to the basket
    public void AddItem(int id, int quantity)
    {
        // Update or add to dictionary
        if (basketItems.ContainsKey(id))
        {
            basketItems[id] += quantity; // Note: Changed from = to += to accumulate quantity
        }
        else
        {
            basketItems[id] = quantity;
        }

        // Update debug list
        bool foundInList = false;
        for (int i = 0; i < items.Count; i++)
        {
            if (items[i].productID == id)
            {
                BasketItem item = items[i];
                item.amount = basketItems[id]; // Update with current quantity
                items[i] = item;
                foundInList = true;
                break;
            }
        }

        if (!foundInList)
        {
            items.Add(new BasketItem(id, basketItems[id]));
        }

        float product_total = GetProductValue(id) * quantity;
        currentValue += product_total;
    }
}