using System.Collections.Generic;
using TMPro;
using UnityEngine;
using VRShopping.Items;
using VRShopping.UI;

namespace VRShopping.Interact
{
    public class CheckoutMachine : MonoBehaviour
    {
        public int CheckoutSum { get; private set; }

        [SerializeField] private Transform _rowContainer;
        [SerializeField] private CheckoutProductionRow _rowPrefab;

        private readonly Dictionary<string, CheckoutProductionRow> _rowByItemId = new();

        [SerializeField] private TMP_Text _checkoutSumField;

        public void UpdateSumUI()
        {
            _checkoutSumField.text = CheckoutSum.ToString("N0");
        }

        public void AddCheckoutProduction(ItemData itemData)
        {
            Debug.Log("추가버튼 누름");

            if (itemData == null) return;

            if (_rowByItemId.TryGetValue(itemData.ItemId, out CheckoutProductionRow row))
            {
                row.Bind(itemData, row.Quantity + 1);
            }
            else
            {
                row = Instantiate(_rowPrefab, _rowContainer);
                row.OnAddClicked += AddCheckoutProduction;
                row.OnRemoveClicked += RemoveCheckoutProduction;
                row.Bind(itemData, 1);
                _rowByItemId[itemData.ItemId] = row;
            }

            CheckoutSum += itemData.FinalPrice;
        }

        public void RemoveCheckoutProduction(ItemData itemData)
        {
            Debug.Log("감소버튼 누름");

            if (itemData == null) return;
            if (!_rowByItemId.TryGetValue(itemData.ItemId, out CheckoutProductionRow row)) return;

            CheckoutSum -= itemData.FinalPrice;

            if (row.Quantity <= 1)
            {
                _rowByItemId.Remove(itemData.ItemId);
                Destroy(row.gameObject);
            }
            else
            {
                row.Bind(itemData, row.Quantity - 1);
            }
        }
    }
}