Himall.Service/ProductService.cs

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using Himall.Core;
using Himall.Core.Helper;
using Himall.Entity;
using Himall.IServices;
using Himall.IServices.QueryModel;
using Himall.Model;
using Himall.ServiceProvider;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;
using System.Transactions;

namespace Himall.Service
{
    public class ProductService : ServiceBase, IProductService, IService, IDisposable
    {
        public ProductService()
        {
        }

        public void AddBrowsingProduct(BrowsingHistoryInfo info)
        {
            BrowsingHistoryInfo browseTime = context.BrowsingHistoryInfo.FirstOrDefault((BrowsingHistoryInfo a) => a.ProductId == info.ProductId && a.MemberId == info.MemberId);
            if (browseTime != null)
            {
                browseTime.BrowseTime = info.BrowseTime;
            }
            else if (context.BrowsingHistoryInfo.Count((BrowsingHistoryInfo a) => a.MemberId == info.MemberId) >= 20)
            {
                BrowsingHistoryInfo browsingHistoryInfo = (
                    from a in context.BrowsingHistoryInfo
                    where a.MemberId == info.MemberId
                    orderby a.BrowseTime
                    select a).FirstOrDefault();
                context.BrowsingHistoryInfo.Remove(browsingHistoryInfo);
                context.BrowsingHistoryInfo.Add(info);
            }
            else
            {
                context.BrowsingHistoryInfo.Add(info);
            }
            context.SaveChanges();
        }

        public void AddFavorite(long productId, long userId, out int status)
        {
            FavoriteInfo favoriteInfo = context.FavoriteInfo.FirstOrDefault((FavoriteInfo f) => f.ProductId.Equals(productId) && f.UserId.Equals(userId));
            if (favoriteInfo == null || favoriteInfo.ProductId != productId)
            {
                DbSet<FavoriteInfo> favoriteInfos = context.FavoriteInfo;
                FavoriteInfo favoriteInfo1 = new FavoriteInfo()
                {
                    Date = DateTime.Now,