Can I vibe code eCartApi?

Build a unified ecommerce API middleware in Node.js (Fastify) and PostgreSQL that standardizes product, order, and customer data across Shopify and WooCommerce.

1. DATA MODEL & CANONICAL SCHEMA
- Create database tables for stores (id, platform_type, access_token, refresh_token, store_url, created_at) and integration_logs.
- Define canonical JSON schemas for Product (id, title, description, price, sku, inventory_quantity, variants array) and Order (id, customer_email, total_price, currency, line_items array, fulfillment_status).

2. ADAPTER LAYER IMPLEMENTATION
- Build an abstract PlatformAdapter interface with standard methods: getProducts(), getOrder(), createOrder(), and handleWebhook().
- Implement ShopifyAdapter using Shopify GraphQL/REST API to convert raw responses into the canonical schema.
- Implement WooCommerceAdapter using WooCommerce REST API v3 to convert raw responses into the exact same canonical schema.

3. WEBHOOK INGESTION & NORMALIZATION
- Expose a POST /webhooks/:platform/:storeId endpoint to accept inbound webhooks.
- Verify cryptographic webhook signatures (Shopify HMAC, WooCommerce secret).
- Queue incoming raw payloads into Redis via BullMQ, then process and transform them into standardized events (order.created, product.updated).

4. RATE LIMITING & ERROR HANDLING
- Implement token bucket rate limiting per store adapter based on provider caps (e.g., Shopify 40 points/sec bucket, WooCommerce REST limits).
- Implement exponential backoff retry policies for 429 and 5xx responses.

5. OUT OF SCOPE
- Support for more than Shopify and WooCommerce for MVP.
- GUI builder for field mappings; rely on code-defined adapter mappers.

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