Add internal/service/shop.go

internal/service/shop.go

@@ -0,0 +1,60 @@
+package service
+
+import (
+	"gotest/internal/repository"
+)
+
+// ShopService 电商商品服务
+type ShopService struct {
+	repo *repository.ShopRepository
+}
+
+// NewShopService 创建电商服务实例
+func NewShopService(repo *repository.ShopRepository) *ShopService {
+	return &ShopService{repo: repo}
+}
+
+// ListCategories 获取分类列表
+func (s *ShopService) ListCategories() (interface{}, error) {
+	return s.repo.ListCategories()
+}
+
+// ListProducts 获取商品列表
+func (s *ShopService) ListProducts(categoryID uint, keyword, sort string, page, pageSize int) (map[string]interface{}, error) {
+	products, total, err := s.repo.ListProducts(categoryID, keyword, sort, page, pageSize)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"list":      products,
+		"total":     total,
+		"page":      page,
+		"page_size": pageSize,
+	}, nil
+}
+
+// GetProduct 获取商品详情
+func (s *ShopService) GetProduct(id uint) (interface{}, error) {
+	return s.repo.GetProduct(id)
+}
+
+// ListFeatured 获取推荐商品
+func (s *ShopService) ListFeatured(limit int) (interface{}, error) {
+	return s.repo.ListFeaturedProducts(limit)
+}
+
+// GetHomeData 获取商城首页数据（分类 + 推荐商品）
+func (s *ShopService) GetHomeData() (map[string]interface{}, error) {
+	categories, err := s.repo.ListCategories()
+	if err != nil {
+		return nil, err
+	}
+	featured, err := s.repo.ListFeaturedProducts(8)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"categories": categories,
+		"featured":   featured,
+	}, nil
+}