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
}