603 lines
19 KiB
C#
603 lines
19 KiB
C#
using MAX.Core.DependencyInjection;
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using MAX.Framework.Commons;
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using MAX.Framework.Dtos;
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using Microsoft.Extensions.Logging;
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using Store.Modules.CloudProduct.Dtos;
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using Store.Modules.CloudProduct.Entities;
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using Store.Modules.CloudProduct.Enums;
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using Store.Modules.CloudProduct.Repositorys;
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namespace Store.Modules.CloudProduct.Services
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{
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/// <summary>
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/// 用户收藏商品业务：收藏/取消收藏（数据库 + 收藏索引同步写入）、收藏分组维护、收藏状态查询、收藏检索与索引重建。
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/// </summary>
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public interface IUserFavoritesService : IScopedDependency
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{
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/// <summary>批量收藏商品，返回本次成功收藏的商品数量（已收藏的商品视为修改收藏分组）</summary>
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Task<int> AddFavoritesAsync(AddUserFavoriteRequest request);
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/// <summary>批量取消收藏，返回实际取消的条数</summary>
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Task<int> RemoveFavoritesAsync(RemoveUserFavoritesRequest request);
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/// <summary>创建收藏分组：创建成功返回 true，同名分组已存在返回 false</summary>
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Task<bool> CreateGroupAsync(CreateUserFavoriteGroupRequest request);
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/// <summary>查询用户的收藏分组（含默认分组）及分组下收藏数量</summary>
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Task<List<UserFavoriteGroupDto>> GetGroupsAsync(string userName);
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/// <summary>按 GoodsIds 顺序返回每个商品是否已被该用户收藏</summary>
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Task<List<bool>> GetFavoriteStatusAsync(UserFavoriteStatusRequest request);
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/// <summary>检索用户收藏的商品（标题/销量/价格/类目/分组）</summary>
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Task<(List<UserFavoriteItem> List, long Total)> SearchFavoritesAsync(UserFavoritesSearchRequest request);
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/// <summary>移除所有用户收藏索引并按数据库数据全量重建，返回重建的文档数</summary>
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Task<long> RebuildSearchIndexAsync();
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}
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internal class UserFavoritesService : IUserFavoritesService
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{
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/// <summary>未归属任何分组的收藏所使用的分组名（对应 group_id = 0）</summary>
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public const string DefaultGroupName = "默认分组";
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/// <summary>重建索引时单次 bulk 的文档数，避免一次请求过大</summary>
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private const int RebuildBatchSize = 2000;
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private readonly UserGoodsFavoriteRepository _favoriteRepository;
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private readonly UserGoodsFavoriteGroupRepository _groupRepository;
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private readonly GoodsRepository _goodsRepository;
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private readonly IUserFavoritesIndexService _indexService;
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private readonly ILogger<UserFavoritesService> _logger;
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public UserFavoritesService(
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UserGoodsFavoriteRepository favoriteRepository,
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UserGoodsFavoriteGroupRepository groupRepository,
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GoodsRepository goodsRepository,
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IUserFavoritesIndexService indexService,
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ILogger<UserFavoritesService> logger)
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{
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_favoriteRepository = favoriteRepository;
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_groupRepository = groupRepository;
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_goodsRepository = goodsRepository;
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_indexService = indexService;
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_logger = logger;
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}
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/// <summary>
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/// 批量收藏商品：先落库（user_goods_favorites），再同步写入收藏索引；
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/// 商品不存在/已删除的编号会被跳过，返回本次成功收藏的商品数量。
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/// 任意一步失败都会回滚本次已写入的数据库记录，保证“数据库中有收藏 = 索引中可搜索到”。
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/// </summary>
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public async Task<int> AddFavoritesAsync(AddUserFavoriteRequest request)
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{
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if (request == null)
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{
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throw new AppException("请求参数不能为空", ResultCode.ValidationError);
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}
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var userName = request.UserName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(userName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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var goodsIds = request.GoodsIds?.Where(x => x > 0).Distinct().ToList() ?? new List<long>();
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if (goodsIds.Count == 0)
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{
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throw new AppException("请提供要收藏的商品编号", ResultCode.ValidationError);
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}
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if (request.GroupId < 0)
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{
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throw new AppException("收藏分组无效", ResultCode.ValidationError);
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}
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// 1. 校验分组归属（分组ID > 0 时必须是该用户自己创建的分组）
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if (request.GroupId > 0)
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{
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var group = await _groupRepository.Select
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.Where(x => x.Id == request.GroupId && x.UserName == userName)
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.FirstAsync();
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if (group == null)
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{
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throw new AppException($"收藏分组不存在: {request.GroupId}", ResultCode.ValidationError);
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}
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}
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var groupName = await ResolveGroupNameAsync(userName, request.GroupId);
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// 2. 批量取商品快照（不存在/已删除的商品不收藏，直接跳过）
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var goodsList = await _goodsRepository.Select
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.Where(x => goodsIds.Contains(x.GoodsId) && x.Status == 0)
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.ToListAsync();
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if (goodsList.Count == 0)
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{
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return 0;
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}
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var goodsMap = new Dictionary<long, GoodsEntity>();
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foreach (var goods in goodsList)
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{
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goodsMap[goods.GoodsId] = goods;
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}
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// 3. 批量取已存在的收藏记录
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var existingList = await _favoriteRepository.Select
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.Where(x => x.UserName == userName && goodsIds.Contains(x.GoodsId))
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.ToListAsync();
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var existingMap = new Dictionary<long, UserGoodsFavoriteEntity>();
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foreach (var favorite in existingList)
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{
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existingMap[favorite.GoodsId] = favorite;
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}
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// 4. 逐条落库：不存在则新增，已存在且分组不同则修改分组
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var insertedIds = new List<long>();
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var changedGroupIds = new List<(long Id, int PreviousGroupId)>();
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var documents = new List<UserFavoritesSearchDocument>();
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try
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{
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foreach (var goods in goodsMap.Values)
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{
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if (existingMap.TryGetValue(goods.GoodsId, out var favorite) == false)
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{
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favorite = new UserGoodsFavoriteEntity
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{
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UserName = userName,
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GoodsId = goods.GoodsId,
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GroupId = request.GroupId,
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CreatedAt = DateTime.Now,
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};
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try
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{
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await _favoriteRepository.InsertAsync(favorite);
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insertedIds.Add(favorite.Id);
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}
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catch (Exception ex)
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{
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// 并发收藏同一商品时可能命中唯一键 uk_user_goods，回读已存在记录后按“修改分组”处理
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favorite = await _favoriteRepository.Select
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.Where(x => x.UserName == userName && x.GoodsId == goods.GoodsId)
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.FirstAsync();
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if (favorite == null)
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{
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throw new AppException($"收藏商品失败（{goods.GoodsId}）: {ex.Message}");
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}
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}
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}
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if (favorite.GroupId != request.GroupId)
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{
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changedGroupIds.Add((favorite.Id, favorite.GroupId));
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await _favoriteRepository.Orm.Update<UserGoodsFavoriteEntity>()
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.Set(x => x.GroupId, request.GroupId)
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.Where(x => x.Id == favorite.Id)
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.ExecuteAffrowsAsync();
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favorite.GroupId = request.GroupId;
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}
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documents.Add(BuildDocument(favorite, goods, groupName));
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}
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}
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catch
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{
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await CompensateWriteFailureAsync(insertedIds, changedGroupIds);
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throw;
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}
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// 5. 批量同步写入索引
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try
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{
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await _indexService.IndexDocumentsAsync(documents);
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}
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catch
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{
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await CompensateWriteFailureAsync(insertedIds, changedGroupIds);
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throw;
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}
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return documents.Count;
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}
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/// <summary>
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/// 批量取消收藏：先删除数据库记录，再删除索引文档；
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/// 索引删除失败时回补数据库记录，避免“库里有收藏但搜索不到”。
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/// </summary>
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public async Task<int> RemoveFavoritesAsync(RemoveUserFavoritesRequest request)
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{
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if (request == null)
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{
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throw new AppException("请求参数不能为空", ResultCode.ValidationError);
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}
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var userName = request.UserName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(userName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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var goodsIds = request.GoodsIds?.Where(x => x > 0).Distinct().ToList() ?? new List<long>();
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if (goodsIds.Count == 0)
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{
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throw new AppException("请提供要取消收藏的商品编号", ResultCode.ValidationError);
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}
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var favorites = await _favoriteRepository.Select
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.Where(x => x.UserName == userName && goodsIds.Contains(x.GoodsId))
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.ToListAsync();
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if (favorites.Count == 0)
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{
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return 0;
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}
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await _favoriteRepository.Orm.Delete<UserGoodsFavoriteEntity>()
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.Where(x => x.UserName == userName && goodsIds.Contains(x.GoodsId))
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.ExecuteAffrowsAsync();
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try
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{
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await _indexService.DeleteDocumentsAsync(
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favorites.Select(x => UserFavoritesSearchDocument.BuildId(x.UserName, x.GoodsId)));
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}
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catch (Exception ex)
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{
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// 索引删除失败：回补数据库记录（自增主键会重新生成，检索以“用户名+商品编号”为准，不受影响）
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_logger.LogError(ex, "删除收藏索引失败，回补数据库收藏记录。UserName={UserName} Count={Count}", userName, favorites.Count);
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await _favoriteRepository.InsertAsync(favorites);
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throw;
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}
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return favorites.Count;
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}
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/// <summary>
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/// 创建收藏分组：创建成功返回 true，同一用户同名分组已存在返回 false。
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/// </summary>
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public async Task<bool> CreateGroupAsync(CreateUserFavoriteGroupRequest request)
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{
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if (request == null)
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{
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throw new AppException("请求参数不能为空", ResultCode.ValidationError);
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}
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var userName = request.UserName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(userName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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var groupName = request.GroupName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(groupName))
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{
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throw new AppException("分组名不能为空", ResultCode.ValidationError);
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}
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if (groupName.Length > 255)
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{
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throw new AppException("分组名长度不能超过255个字符", ResultCode.ValidationError);
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}
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var existing = await _groupRepository.Select
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.Where(x => x.UserName == userName && x.GroupName == groupName)
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.FirstAsync();
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if (existing != null)
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{
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return false;
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}
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await _groupRepository.InsertAsync(new UserGoodsFavoriteGroupEntity
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{
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UserName = userName,
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GroupName = groupName,
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});
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return true;
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}
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/// <summary>
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/// 查询用户的收藏分组及分组下收藏数量，默认分组（分组ID=0）存在收藏时一并返回。
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/// </summary>
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public async Task<List<UserFavoriteGroupDto>> GetGroupsAsync(string userName)
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{
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userName = userName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(userName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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var groups = await _groupRepository.Select
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.Where(x => x.UserName == userName)
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.OrderBy(x => x.Id)
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.ToListAsync();
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var countList = await _favoriteRepository.Select
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.Where(x => x.UserName == userName)
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.GroupBy(x => x.GroupId)
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.ToListAsync(x => new { GroupId = x.Key, Count = x.Count() });
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var countMap = countList.ToDictionary(x => x.GroupId, x => (long)x.Count);
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var result = new List<UserFavoriteGroupDto>();
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if (countMap.TryGetValue(0, out var defaultCount) && defaultCount > 0)
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{
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result.Add(new UserFavoriteGroupDto
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{
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Id = 0,
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UserName = userName,
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GroupName = DefaultGroupName,
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FavoriteCount = defaultCount,
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});
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}
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result.AddRange(groups.Select(x => new UserFavoriteGroupDto
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{
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Id = x.Id,
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UserName = x.UserName,
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GroupName = x.GroupName,
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FavoriteCount = countMap.TryGetValue((int)x.Id, out var count) ? count : 0,
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}));
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return result;
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}
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/// <summary>
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/// 按 GoodsIds 顺序返回每个商品是否已被该用户收藏（商品编号无效的返回 false）。
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/// 以数据库为准，不依赖索引，索引重建期间结果依然准确。
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/// </summary>
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public async Task<List<bool>> GetFavoriteStatusAsync(UserFavoriteStatusRequest request)
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{
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if (request == null)
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{
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throw new AppException("请求参数不能为空", ResultCode.ValidationError);
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}
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var userName = request.UserName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(userName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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var goodsIds = request.GoodsIds ?? new List<long>();
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if (goodsIds.Count == 0)
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{
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return new List<bool>();
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}
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var validIds = goodsIds.Where(x => x > 0).Distinct().ToList();
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var favoritedIds = new HashSet<long>();
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if (validIds.Count > 0)
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{
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var favorited = await _favoriteRepository.Select
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.Where(x => x.UserName == userName && validIds.Contains(x.GoodsId))
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.ToListAsync(x => x.GoodsId);
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favoritedIds = favorited.ToHashSet();
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}
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// 结果与入参顺序一一对应，前台可直接按下标渲染
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return goodsIds.Select(x => x > 0 && favoritedIds.Contains(x)).ToList();
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}
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/// <summary>
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/// 从收藏索引检索当前用户的收藏商品。
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/// </summary>
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public async Task<(List<UserFavoriteItem> List, long Total)> SearchFavoritesAsync(UserFavoritesSearchRequest request)
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{
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if (request == null)
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{
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throw new AppException("请求参数不能为空", ResultCode.ValidationError);
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}
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var userName = request.UserName?.Trim() ?? string.Empty;
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if (string.IsNullOrWhiteSpace(userName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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request.UserName = userName;
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var searchResult = await _indexService.SearchAsync(request, ParseSortBy(request.SortBy));
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var list = searchResult.Documents.Select(ToItem).ToList();
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return (list, searchResult.Total);
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}
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/// <summary>
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/// 移除所有用户收藏索引并重新创建，然后从 user_goods_favorites 关联 goods 全量回填。
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/// </summary>
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public async Task<long> RebuildSearchIndexAsync()
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{
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// 1. 删除并重建索引（清空所有用户收藏索引）
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await _indexService.ClearIndexAsync();
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// 2. 从数据库读取全部收藏记录
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var favorites = await _favoriteRepository.Select
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.OrderBy(x => x.Id)
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.ToListAsync();
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if (favorites.Count == 0)
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{
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return 0;
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}
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// 3. 关联 goods 补全商品数据（标题/价格/销量/类目/平台/缩略图）
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var goodsIds = favorites.Select(x => x.GoodsId).Distinct().ToList();
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var goodsList = await _goodsRepository.Select
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.Where(x => goodsIds.Contains(x.GoodsId))
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.ToListAsync();
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var goodsMap = new Dictionary<long, GoodsEntity>();
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foreach (var goods in goodsList)
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{
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goodsMap[goods.GoodsId] = goods;
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}
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// 4. 关联分组表补全分组名
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var groupIds = favorites.Where(x => x.GroupId > 0).Select(x => (long)x.GroupId).Distinct().ToList();
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var groupMap = new Dictionary<int, string>();
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if (groupIds.Count > 0)
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{
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var groups = await _groupRepository.Select
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.Where(x => groupIds.Contains(x.Id))
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.ToListAsync();
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foreach (var group in groups)
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{
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groupMap[(int)group.Id] = group.GroupName;
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}
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}
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var documents = new List<UserFavoritesSearchDocument>();
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var missingGoodsCount = 0;
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foreach (var favorite in favorites)
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{
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if (goodsMap.TryGetValue(favorite.GoodsId, out var goods) == false)
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{
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// 商品已被物理删除，跳过该收藏（不写入索引）
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missingGoodsCount++;
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continue;
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}
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||
var groupName = favorite.GroupId <= 0
|
||
? DefaultGroupName
|
||
: (groupMap.TryGetValue(favorite.GroupId, out var name) ? name : string.Empty);
|
||
|
||
documents.Add(BuildDocument(favorite, goods, groupName));
|
||
}
|
||
|
||
// 5. 分批写入索引
|
||
for (var offset = 0; offset < documents.Count; offset += RebuildBatchSize)
|
||
{
|
||
await _indexService.IndexDocumentsAsync(documents.Skip(offset).Take(RebuildBatchSize));
|
||
}
|
||
|
||
_logger.LogInformation(
|
||
"用户收藏索引重建完成：收藏 {FavoriteCount} 条，写入索引 {IndexedCount} 条，商品缺失跳过 {MissingCount} 条。",
|
||
favorites.Count, documents.Count, missingGoodsCount);
|
||
|
||
return documents.Count;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 收藏落库成功但索引写入失败时的补偿：撤销本次新增的收藏记录、还原被修改的收藏分组。
|
||
/// </summary>
|
||
private async Task CompensateWriteFailureAsync(List<long> insertedIds, List<(long Id, int PreviousGroupId)> changedGroupIds)
|
||
{
|
||
try
|
||
{
|
||
if (insertedIds.Count > 0)
|
||
{
|
||
await _favoriteRepository.Orm.Delete<UserGoodsFavoriteEntity>()
|
||
.Where(x => insertedIds.Contains(x.Id))
|
||
.ExecuteAffrowsAsync();
|
||
}
|
||
|
||
foreach (var (id, previousGroupId) in changedGroupIds)
|
||
{
|
||
await _favoriteRepository.Orm.Update<UserGoodsFavoriteEntity>()
|
||
.Set(x => x.GroupId, previousGroupId)
|
||
.Where(x => x.Id == id)
|
||
.ExecuteAffrowsAsync();
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
_logger.LogError(ex,
|
||
"回滚用户收藏记录失败。Inserted={InsertedCount} GroupChanged={GroupChangedCount}",
|
||
insertedIds.Count, changedGroupIds.Count);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 取分组名：分组ID <= 0 返回默认分组名，分组不存在返回空串。
|
||
/// </summary>
|
||
private async Task<string> ResolveGroupNameAsync(string userName, int groupId)
|
||
{
|
||
if (groupId <= 0)
|
||
{
|
||
return DefaultGroupName;
|
||
}
|
||
|
||
var group = await _groupRepository.Select
|
||
.Where(x => x.Id == groupId && x.UserName == userName)
|
||
.FirstAsync();
|
||
|
||
return group?.GroupName ?? string.Empty;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 组装收藏索引文档：收藏记录 + 商品快照 + 分组名。
|
||
/// </summary>
|
||
private static UserFavoritesSearchDocument BuildDocument(UserGoodsFavoriteEntity favorite, GoodsEntity goods, string groupName)
|
||
{
|
||
return new UserFavoritesSearchDocument
|
||
{
|
||
Id = UserFavoritesSearchDocument.BuildId(favorite.UserName, favorite.GoodsId),
|
||
FavId = favorite.Id,
|
||
UserName = favorite.UserName,
|
||
GroupId = favorite.GroupId,
|
||
GroupName = groupName,
|
||
GoodsId = goods.GoodsId,
|
||
Platform = goods.Platform,
|
||
Title = goods.Title ?? string.Empty,
|
||
ThumbUrl = goods.ThumbUrl,
|
||
CatId1 = goods.CatId1,
|
||
CatId2 = goods.CatId2,
|
||
CatId3 = goods.CatId3,
|
||
CatId4 = goods.CatId4,
|
||
MinPrice = goods.MinPrice,
|
||
SoldQuantity = goods.SoldQuantity,
|
||
CreatedAt = favorite.CreatedAt,
|
||
};
|
||
}
|
||
|
||
private static UserFavoriteItem ToItem(UserFavoritesSearchDocument document)
|
||
{
|
||
return new UserFavoriteItem
|
||
{
|
||
Id = document.FavId,
|
||
UserName = document.UserName,
|
||
GroupId = document.GroupId,
|
||
GroupName = document.GroupName,
|
||
GoodsId = document.GoodsId,
|
||
Platform = document.Platform,
|
||
Title = document.Title,
|
||
ThumbUrl = document.ThumbUrl,
|
||
CatId1 = document.CatId1,
|
||
CatId2 = document.CatId2,
|
||
CatId3 = document.CatId3,
|
||
CatId4 = document.CatId4,
|
||
MinPrice = document.MinPrice,
|
||
SoldQuantity = document.SoldQuantity,
|
||
CreatedAt = document.CreatedAt,
|
||
};
|
||
}
|
||
|
||
/// <summary>
|
||
/// 解析排序方式，非法值一律按“收藏时间倒序”处理。
|
||
/// </summary>
|
||
private static UserFavoritesSortBy ParseSortBy(string? sortBy)
|
||
{
|
||
if (string.IsNullOrWhiteSpace(sortBy))
|
||
{
|
||
return UserFavoritesSortBy.CreatedTimeDesc;
|
||
}
|
||
|
||
return Enum.TryParse<UserFavoritesSortBy>(sortBy, ignoreCase: true, out var value)
|
||
? value
|
||
: UserFavoritesSortBy.CreatedTimeDesc;
|
||
}
|
||
}
|
||
} |