Backends

1interface ProductBackend {
2  "cmt">// Search products with optional filters
3  searchProducts(
4    query: string,
5    filters?: ProductFilters,
6    options?: { limit?: number; offset?: number }
7  ): Promise<ProductSearchResult>;
8  
9  "cmt">// Get detailed product info by ID or slug
10  getProductDetails(productId: string): Promise<Product | null>;
11  
12  "cmt">// Check inventory for multiple products
13  checkInventory(productIds: string[]): Promise<InventoryStatus[]>;
14  
15  "cmt">// Get product recommendations
16  getRecommendations(context: {
17    productIds?: string[];
18    userId?: string;
19    strategy?: 'similar' | 'complementary' | 'trending' | 'personalized';
20  }): Promise<Recommendation[]>;
21}

1interface CartBackend {
2  "cmt">// Create a new cart
3  createCart(sessionId: string): Promise<Cart>;
4  
5  "cmt">// Get existing cart
6  getCart(cartId: string): Promise<Cart | null>;
7  
8  "cmt">// Add item to cart
9  addToCart(
10    cartId: string,
11    input: AddToCartInput
12  ): Promise<{ cart: Cart; addedItem: CartItem }>;
13  
14  "cmt">// Update item quantity
15  updateCartItem(
16    cartId: string,
17    itemId: string,
18    updates: { quantity?: number }
19  ): Promise<Cart>;
20  
21  "cmt">// Remove item from cart
22  removeFromCart(cartId: string, itemId: string): Promise<Cart>;
23  
24  "cmt">// Clear all items
25  clearCart(cartId: string): Promise<void>;
26}

1interface OrderBackend {
2  "cmt">// Create order from cart
3  createOrder(
4    cart: Cart,
5    shippingAddress: ShippingAddress,
6    paymentInfo?: PaymentInfo
7  ): Promise<Order>;
8  
9  "cmt">// Get order by ID
10  getOrder(orderId: string): Promise<Order | null>;
11  
12  "cmt">// Update order status
13  updateOrderStatus(
14    orderId: string,
15    status: Order['status']
16  ): Promise<Order>;
17}

1interface Product {
2  id: string;
3  name: string;
4  description?: string;
5  slug?: string;
6  price: {
7    amount: number;
8    currency: string;
9    compareAtPrice?: number;
10  };
11  imageUrl?: string;
12  images?: string[];
13  category?: string;
14  tags?: string[];
15  variants?: ProductVariant[];
16  attributes?: Record<string, string>;
17  inStock?: boolean;
18  rating?: number;
19  reviewCount?: number;
20}

1const products = [
2  { id: '1', name: 'Product A', price: 29.99 },
3  { id: '2', name: 'Product B', price: 49.99 },
4];
5 
6const backend: ProductBackend = {
7  async searchProducts(query) {
8    const q = query.toLowerCase();
9    const results = products.filter(p => 
10      p.name.toLowerCase().includes(q)
11    );
12    return { products: results, total: results.length, hasMore: false };
13  },
14  "cmt">// ... other methods
15};

1import { PrismaClient } from '@prisma/client';
2 
3const prisma = new PrismaClient();
4 
5const backend: ProductBackend = {
6  async searchProducts(query, filters, options) {
7    const products = await prisma.product.findMany({
8      where: {
9        OR: [
10          { name: { contains: query, mode: 'insensitive' } },
11          { description: { contains: query, mode: 'insensitive' } },
12        ],
13        ...(filters?.category && { category: filters.category }),
14        ...(filters?.priceMin && { price: { gte: filters.priceMin } }),
15        ...(filters?.priceMax && { price: { lte: filters.priceMax } }),
16      },
17      take: options?.limit ?? 10,
18      skip: options?.offset ?? 0,
19    });
20    
21    return {
22      products: products.map(mapProduct),
23      total: products.length,
24      hasMore: products.length === (options?.limit ?? 10),
25    };
26  },
27  "cmt">// ... other methods
28};