first commit

2026-09-11 01:41:52 +08:00
commit 9f22e6ccae
263 changed files with 28935 additions and 0 deletions
@@ -0,0 +1,183 @@
+package service
+
+import (
+	"context"
+
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/global"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/dto"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/mysqldao"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/mysqlmodel"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/redisdao"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/pkg/errcode"
+)
+
+// CollectService 收藏业务服务。
+type CollectService struct {
+	collectDao    *mysqldao.CollectDao
+	outfitDao     *mysqldao.OutfitDao
+	outfitItemDao *mysqldao.OutfitItemDao
+	clothesDao    *mysqldao.ClothesDao
+}
+
+// NewCollectService 创建收藏服务。
+func NewCollectService() *CollectService {
+	return &CollectService{
+		collectDao:    mysqldao.NewCollectDao(),
+		outfitDao:     mysqldao.NewOutfitDao(),
+		outfitItemDao: mysqldao.NewOutfitItemDao(),
+		clothesDao:    mysqldao.NewClothesDao(),
+	}
+}
+
+// Collect 收藏或取消收藏社区穿搭。
+func (s *CollectService) Collect(ctx context.Context, userID int64, request *dto.CollectRequest) (*dto.CollectResponse, *errcode.Error) {
+	ctx, span := global.Tracer.Start(ctx, "svc.CollectCollect")
+	defer span.End()
+
+	outfit, err := s.outfitDao.OutfitGetByUUID(ctx, request.TargetUUID)
+	if err != nil {
+		if isNotFound(err) {
+			return nil, errcode.TargetNotFound
+		}
+		return nil, errcode.DatabaseError
+	}
+	// 非本人仅可收藏公开可见的穿搭。
+	if outfit.UserID != userID && !isOutfitPublicVisible(outfit) {
+		return nil, errcode.OutfitNoPermission
+	}
+	targetID := outfit.ID
+
+	existing, err := s.collectDao.CollectGetByTargetAndUser(ctx, CollectTypeOutfit, targetID, userID)
+	notExist := false
+	if err != nil {
+		if isNotFound(err) {
+			notExist = true
+		} else {
+			return nil, errcode.DatabaseError
+		}
+	}
+
+	switch request.Action {
+	case ActionDo: // 收藏
+		if cerr := s.collectDao.CollectUpsertOn(ctx, &mysqlmodel.Collect{
+			CollectType: CollectTypeOutfit,
+			TargetID:    targetID,
+			UserID:      userID,
+			Status:      InteractStatusOn,
+		}); cerr != nil {
+			return nil, errcode.CollectFailed
+		}
+		_ = redisdao.CollectAdd(ctx, CollectTypeOutfit, targetID, userID)
+
+	case ActionCancel: // 取消收藏
+		if !notExist && existing.Status == InteractStatusOn {
+			if uerr := s.collectDao.CollectUpdateStatus(ctx, existing.ID, InteractStatusOff); uerr != nil {
+				return nil, errcode.CollectFailed
+			}
+			_ = redisdao.CollectRemove(ctx, CollectTypeOutfit, targetID, userID)
+		}
+	}
+
+	return &dto.CollectResponse{}, nil
+}
+
+// List 分页查询我收藏的穿搭。
+func (s *CollectService) List(ctx context.Context, userID int64, request *dto.CollectListRequest) (*dto.CollectListResponse, *errcode.Error) {
+	ctx, span := global.Tracer.Start(ctx, "svc.CollectList")
+	defer span.End()
+
+	page, pageSize := normalizePage(request.Page, request.PageSize)
+
+	pageIDs, total, err := s.collectDao.CollectListTargetIDsByUserPage(ctx, CollectTypeOutfit, userID, page, pageSize)
+	if err != nil {
+		return nil, errcode.DatabaseError
+	}
+
+	items := make([]dto.OutfitGetByUUIDResponse, 0, len(pageIDs))
+	for _, oid := range pageIDs {
+		outfit, gerr := s.outfitDao.OutfitGetByID(ctx, oid)
+		if gerr != nil {
+			// 穿搭可能已删除，跳过。
+			continue
+		}
+		outfitItems, uerr := s.itemResponses(ctx, outfit.ID)
+		if uerr != nil {
+			continue
+		}
+		items = append(items, dto.OutfitGetByUUIDResponse{
+			OutfitCreateResponse: buildOutfitCreateResponse(outfit, outfitItems),
+		})
+	}
+
+	return &dto.CollectListResponse{
+		PageResponse: dto.PageResponse{Total: total, Page: page, PageSize: pageSize},
+		List:         items,
+	}, nil
+}
+
+// GetByTarget 查询穿搭收藏状态与收藏数（Redis 优先，回落 MySQL）。
+func (s *CollectService) GetByTarget(ctx context.Context, userID int64, request *dto.CollectGetByTargetRequest) (*dto.CollectGetByTargetResponse, *errcode.Error) {
+	ctx, span := global.Tracer.Start(ctx, "svc.CollectGetByTarget")
+	defer span.End()
+
+	outfit, err := s.outfitDao.OutfitGetByUUID(ctx, request.TargetUUID)
+	if err != nil {
+		if isNotFound(err) {
+			return nil, errcode.TargetNotFound
+		}
+		return nil, errcode.DatabaseError
+	}
+	// 非本人仅可查询公开可见穿搭的收藏状态。
+	if outfit.UserID != userID && !isOutfitPublicVisible(outfit) {
+		return nil, errcode.OutfitNoPermission
+	}
+	targetID := outfit.ID
+
+	// 是否已收藏：Redis 优先，回落 MySQL。
+	isCollected, err := redisdao.CollectIsMember(ctx, CollectTypeOutfit, targetID, userID)
+	if err != nil {
+		if rec, derr := s.collectDao.CollectGetByTargetAndUser(ctx, CollectTypeOutfit, targetID, userID); derr == nil {
+			isCollected = rec.Status == InteractStatusOn
+		}
+	}
+
+	// 收藏总数：Redis 优先，回落 MySQL。
+	count, err := redisdao.CollectCount(ctx, CollectTypeOutfit, targetID)
+	if err != nil || count == 0 {
+		if dbCnt, derr := s.collectDao.CollectCountByTarget(ctx, CollectTypeOutfit, targetID); derr == nil {
+			count = dbCnt
+		}
+	}
+
+	return &dto.CollectGetByTargetResponse{
+		UserIsCollected: isCollected,
+		CollectCount:    count,
+	}, nil
+}
+
+// itemResponses 获取某穿搭的衣物明细（含图片 URL）。
+func (s *CollectService) itemResponses(ctx context.Context, outfitID int64) ([]dto.OutfitItemResponse, error) {
+	its, err := s.outfitItemDao.OutfitItemListByOutfitID(ctx, outfitID)
+	if err != nil {
+		return nil, err
+	}
+	ids := make([]int64, 0, len(its))
+	for _, it := range its {
+		ids = append(ids, it.ClothesID)
+	}
+	clothesList, err := s.clothesDao.ClothesGetByIDs(ctx, ids)
+	if err != nil {
+		return nil, err
+	}
+	clothesByID := make(map[int64]mysqlmodel.Clothes, len(clothesList))
+	for _, c := range clothesList {
+		clothesByID[c.ID] = c
+	}
+	resps := make([]dto.OutfitItemResponse, 0, len(its))
+	for _, it := range its {
+		if c, ok := clothesByID[it.ClothesID]; ok {
+			resps = append(resps, buildOutfitItemResponse(&c))
+		}
+	}
+	return resps, nil
+}