Add internal/service/food.go

internal/service/food.go

@@ -0,0 +1,81 @@
+package service
+
+import (
+	"gotest/internal/repository"
+)
+
+// FoodService 外卖服务
+type FoodService struct {
+	repo *repository.FoodRepository
+}
+
+// NewFoodService 创建外卖服务实例
+func NewFoodService(repo *repository.FoodRepository) *FoodService {
+	return &FoodService{repo: repo}
+}
+
+// ListCategories 获取餐厅分类
+func (s *FoodService) ListCategories() (interface{}, error) {
+	return s.repo.ListCategories()
+}
+
+// ListRestaurants 获取餐厅列表
+func (s *FoodService) ListRestaurants(categoryID uint, keyword, sort string, page, pageSize int) (map[string]interface{}, error) {
+	restaurants, total, err := s.repo.ListRestaurants(categoryID, keyword, sort, page, pageSize)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"list":      restaurants,
+		"total":     total,
+		"page":      page,
+		"page_size": pageSize,
+	}, nil
+}
+
+// GetRestaurant 获取餐厅详情
+func (s *FoodService) GetRestaurant(id uint) (interface{}, error) {
+	return s.repo.GetRestaurant(id)
+}
+
+// ListFeatured 获取推荐餐厅
+func (s *FoodService) ListFeatured(limit int) (interface{}, error) {
+	return s.repo.ListFeaturedRestaurants(limit)
+}
+
+// GetRestaurantMenu 获取餐厅菜单（菜品分类 + 菜品）
+func (s *FoodService) GetRestaurantMenu(restaurantID uint) (map[string]interface{}, error) {
+	restaurant, err := s.repo.GetRestaurant(restaurantID)
+	if err != nil {
+		return nil, err
+	}
+	categories, err := s.repo.ListMenuCategories(restaurantID)
+	if err != nil {
+		return nil, err
+	}
+	items, err := s.repo.ListMenuItems(restaurantID, 0)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"restaurant":     restaurant,
+		"categories":     categories,
+		"menu_items":     items,
+	}, nil
+}
+
+// GetHomeData 获取外卖首页数据（分类 + 推荐餐厅）
+func (s *FoodService) GetHomeData() (map[string]interface{}, error) {
+	categories, err := s.repo.ListCategories()
+	if err != nil {
+		return nil, err
+	}
+	featured, err := s.repo.ListFeaturedRestaurants(8)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"categories": categories,
+		"featured":   featured,
+	}, nil
+}