using BBWY.Common.Models;
using BBWY.Server.Model;
using BBWY.Server.Model.Db;
using BBWY.Server.Model.Dto;
using System;
using System.Collections.Generic;
using System.Linq;
using Yitter.IdGenerator;

namespace BBWY.Server.Business
{
    public class StatisticsBusiness : BaseBusiness, IDenpendency
    {
        private IList<Enums.OrderState> invalidOrderStateList;

        public StatisticsBusiness(IFreeSql fsql, NLog.ILogger logger, IIdGenerator idGenerator) : base(fsql, logger, idGenerator)
        {
            invalidOrderStateList = new List<Enums.OrderState>() { Enums.OrderState.待付款, Enums.OrderState.已取消 };
        }

        public OrderAchievementResponse GetOrderAchievementStatistics(OrderAchievementRequest request)
        {
            request.EndTime = request.EndTime.Date.AddDays(1).AddSeconds(-1);
            var response = fsql.Select<Order, OrderCost>().LeftJoin((o, oc) => o.Id == oc.OrderId)
                                                          .Where((o, oc) => o.ShopId == request.ShopId &&
                                                                            o.OrderState != null &&
                                                                            !invalidOrderStateList.Contains(o.OrderState.Value) &&
                                                                            o.StartTime >= request.StartTime &&
                                                                            o.StartTime <= request.EndTime)
                                                         .ToAggregate((o, oc) => new OrderAchievementResponse()
                                                         {
                                                             OrderCount = o.Count(),
                                                             Profit = oc.Sum(oc.Key.Profit),
                                                             SaleAmount = o.Sum(o.Key.OrderPayment),
                                                             DeliveryExpressFreight = oc.Sum(oc.Key.DeliveryExpressFreight),
                                                             PlatformCommissionAmount = oc.Sum(oc.Key.PlatformCommissionAmount),
                                                             PurchaseAmount = oc.Sum(oc.Key.PurchaseAmount)
                                                         });
            return response;
        }


        public IList<XingXinagSearchResponse> XingXiangStatistics(XingXiangSearchOrderRequest xingXiangSearchOrderRequest)
        {
            var beginTime = xingXiangSearchOrderRequest.SearchDate.Date;
            var endTime = xingXiangSearchOrderRequest.SearchDate.Date.AddDays(1).AddSeconds(-1);
            IList<XingXinagSearchResponse> list = null;

            //查询订单
            var select = fsql.Select<Order>().Where(o => o.ShopId == xingXiangSearchOrderRequest.ShopId)
                                             .Where(o => o.StartTime >= beginTime && o.StartTime <= endTime);
            var childSelect = fsql.Select<OrderSku>().As("osku")
                                                     .Where(osku => xingXiangSearchOrderRequest.SpuList.Contains(osku.ProductId));
            select = select.Where(o => childSelect.Where(osku => osku.OrderId == o.Id).Any());
            var orderList = select.ToList();

            if (orderList.Count() == 0)
                return null;

            var orderIdList = orderList.Select(o => o.Id).ToList();
            //查询orderSku
            var orderSkuList = fsql.Select<OrderSku>().Where(osku => orderIdList.Contains(osku.OrderId)).ToList();
            //查询成本明细
            var orderCostDetailList = fsql.Select<OrderCostDetail>().Where(ocd => orderIdList.Contains(ocd.OrderId)).ToList();

            list = new List<XingXinagSearchResponse>();

            foreach (var order in orderList)
            {
                var skuCount = orderSkuList.Count(osku => osku.OrderId == order.Id);
                var currentOrderSkuGroups = orderSkuList.Where(osku => osku.OrderId == order.Id &&
                                                                 xingXiangSearchOrderRequest.SpuList.Contains(osku.ProductId)).GroupBy(osku => osku.ProductId);
                foreach (var group in currentOrderSkuGroups)
                {
                    var spuId = group.Key;
                    var procutAmount = group.Sum(osku => osku.Price * osku.ItemTotal) ?? 0;  //货款
                    var commissionAmount = procutAmount * 0.05M;  //该SPU的平台扣点金额
                    var freightPriceByUser = order.FreightPrice == 0 ? 0 : order.FreightPrice / skuCount * group.Count(); //该SPU分配的用户承担运费

                    var currentOrderCostDetailList = orderCostDetailList.Where(ocd => ocd.OrderId == spuId).ToList();
                    var purchaseAmount = currentOrderCostDetailList.Count() > 0 ? currentOrderCostDetailList.Sum(ocd => ocd.TotalCost) : 0;
                    var deliveryFreight = currentOrderCostDetailList.Count() > 0 ? currentOrderCostDetailList.Sum(ocd => ocd.DeliveryExpressFreight) : 0;

                    var profit = procutAmount + freightPriceByUser - purchaseAmount - deliveryFreight - commissionAmount;
                    var xxRespose = list.FirstOrDefault(xx => xx.Spu == spuId);
                    if (xxRespose == null)
                        xxRespose = new XingXinagSearchResponse() { Spu = spuId, Profit = 0M };
                    xxRespose.Profit += profit;
                }
            }

            return list;

        }
    }
}