refactor: 重构服务层和仓库层

internal/service/texture_service.go

@@ -120,6 +120,37 @@ func (s *textureService) GetByID(ctx context.Context, id int64) (*model.Texture,
 	return texture2, nil
 }
 
+func (s *textureService) GetByHash(ctx context.Context, hash string) (*model.Texture, error) {
+	// 尝试从缓存获取
+	cacheKey := s.cacheKeys.TextureByHash(hash)
+	var texture model.Texture
+	if err := s.cache.Get(ctx, cacheKey, &texture); err == nil {
+		if texture.Status == -1 {
+			return nil, errors.New("材质已删除")
+		}
+		return &texture, nil
+	}
+
+	// 缓存未命中，从数据库查询
+	texture2, err := s.textureRepo.FindByHash(hash)
+	if err != nil {
+		return nil, err
+	}
+	if texture2 == nil {
+		return nil, ErrTextureNotFound
+	}
+	if texture2.Status == -1 {
+		return nil, errors.New("材质已删除")
+	}
+
+	// 存入缓存（异步，5分钟过期）
+	go func() {
+		_ = s.cache.Set(context.Background(), cacheKey, texture2, 5*time.Minute)
+	}()
+
+	return texture2, nil
+}
+
 func (s *textureService) GetByUserID(ctx context.Context, uploaderID int64, page, pageSize int) ([]*model.Texture, int64, error) {
 	page, pageSize = NormalizePagination(page, pageSize)