using System.Collections.Generic;
using HK;

namespace Runtime
{
    public class ShoppingCart
    {
        private string _userName = string.Empty;
        private string _userModie = string.Empty;
        private string _userEmail = string.Empty;
        private string _orderID = string.Empty;
        private bool _isAgreeSubscribe = false;
        private List<ShoppingCartData> _datas = new List<ShoppingCartData>();
        private string _totalQuantity = "0";
        private string _itemsSubTotal = "0";
        private string _discount = "0";
        private string _totalAmount = "0";
        private string _monetary = "RMB";

        public string userName
        {
            get => _userName;
            set => _userName = value;
        }

        public string userModie
        {
            get => _userModie;
            set => _userModie = value;
        }

        public string userEmail
        {
            get => _userEmail;
            set => _userEmail = value;
        }

        public string orderID
        {
            get => _orderID;
            set => _orderID = value;
        }

        public bool isAgreeSubscribe
        {
            get => _isAgreeSubscribe;
            set => _isAgreeSubscribe = value;
        }

        public List<ShoppingCartData> datas => _datas;

        public string totalQuantity => _totalQuantity;
        public string itemsSubTotal => _itemsSubTotal;
        public string discount => _discount;
        public string totalAmount => _totalAmount;

        public string monetary
        {
            get => _monetary;
            set
            {
                _monetary = value;
                UpdateDatas();
            }
        }

        public ShoppingCart()
        {
            var value = PlayerPersistent.GetString("monetary");
            if (!string.IsNullOrEmpty(value))
            {
                _monetary = value;
            }

            UpdateDatas();
        }

        public void AddData(ShoppingCartData data)
        {
            datas.Add(data);
            UpdateDatas();
        }

        public void RemoveData(ShoppingCartData data)
        {
            datas.Remove(data);
            UpdateDatas();
        }

        public void Reset()
        {
            datas.Clear();
            UpdateDatas();
        }

        public void UpdateDatas()
        {
            _totalQuantity = string.Empty;
            _itemsSubTotal = string.Empty;
            _discount = string.Empty;
            _totalAmount = string.Empty;

            int i = 0, d = 0, t = 0, q = 0;
            foreach (var shoppingCartData in datas)
            {
                q += shoppingCartData.count;
                i += shoppingCartData.bookAmount * shoppingCartData.count;
                d += shoppingCartData.bookDiscount * shoppingCartData.count;
                t += shoppingCartData.bookAmount * shoppingCartData.count;
            }

            _totalQuantity = $"{q}";
            _itemsSubTotal = $"{monetary} {i:F}";
            _discount = $"{monetary} {d:F}";
            _totalAmount = $"{monetary} {t:F}";
        }
    }

    public class ShoppingCartData
    {
        /// <summary>
        /// name
        /// </summary>
        public string bookName;

        /// <summary>
        /// 价格
        /// </summary>
        public int bookAmount;

        /// <summary>
        /// 优惠
        /// </summary>
        public int bookDiscount;

        /// <summary>
        /// 数量
        /// </summary>
        public int count;

        /// <summary>
        /// 预览图
        /// </summary>
        public byte[] previewImage;

        /// <summary>
        /// 设计图
        /// </summary>
        public byte[] designImage;
    }

    public class ShoppingCartManager : ManagerBase<ShoppingCartManager>
    {
        private ShoppingCart shoppingCart = new();
        public ShoppingCart ShoppingCart => shoppingCart;

        public void AddToCart(ShoppingCartData data)
        {
            shoppingCart.AddData(data);
        }

        public void RemoveFromCart(ShoppingCartData data)
        {
            shoppingCart.RemoveData(data);
        }

        public void RefreshCart()
        {
            shoppingCart.UpdateDatas();
        }

        public void ResetCart()
        {
            shoppingCart.Reset();
        }
    }
}