using HuanMeng.MiaoYu.Code.Cache.Special;
using HuanMeng.MiaoYu.Code.Payment;
using HuanMeng.MiaoYu.Model.Dto.Order;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HuanMeng.MiaoYu.Code.Order
{
    /// <summary>
    /// 订单数据
    /// </summary>
    public class OrderBLL : MiaoYuBase
    {
        public OrderBLL(IServiceProvider serviceProvider) : base(serviceProvider)
        {
        }

        public async Task<BaseResponse<IntentOrderDto>> CreateOrder(string paymentMethod, string productId)
        {
            if (_UserId == 0)
            {
                throw new ArgumentNullException("未登录");
            }
            if (string.IsNullOrEmpty(productId))
            {
                throw new ArgumentNullException("产品不能为空");
            }
            ProductEntityCache productEntityCache = new ProductEntityCache(this);
            var products = productEntityCache.GetDataList();
            var product = products.FirstOrDefault(it => it.ProductId == productId);
            if (product == null)
            {
                throw new NullReferenceException("未找到所属产品");
            }
            var redisLock = $"lock:payment:{_UserId}:{productId}";
            if (!RedisCache.StringSetLock(redisLock, "", 5))
            {
                throw new ArgumentNullException("重复创建订单");
            }

            //productEntityCache.get
            IntentOrderDto intentOrderDto = null;
            //创建订单
            try
            {
                var ip = HttpContextAccessor.HttpContext.GetClientIpAddress();
                var payment = PaymentExtend.GetPayment(paymentMethod);
                (var orderId, var order) = await payment.CreateOrder(product.ProductName, product.Price, product, ip);
                var t = product.ToIntentOrder(paymentMethod, orderId);
                t.UserId = _UserId;
                Dao.daoDbMiaoYu.context.Add(t);
                await Dao.daoDbMiaoYu.context.SaveChangesAsync();
                intentOrderDto = new IntentOrderDto()
                {
                    OrderId = orderId,
                    Payment = order
                };
                RedisCache.KeyDelete(redisLock);
            }
            catch (Exception ex)
            {
                RedisCache.KeyDelete(redisLock);
                throw new Exception("创建订单失败");
            }

            return new BaseResponse<IntentOrderDto>(ResonseCode.Success, "", intentOrderDto);
        }
    }
}