Build a Product Catalog API with Spring Boot

Problem/Feature Description

An e-commerce team needs a REST API for managing their product catalog. The API is built with Spring Boot and Java. A Vue.js storefront running on a separate domain will consume it. The API will be deployed on a cloud VM behind an nginx reverse proxy.

The API needs the following endpoints:

• GET /api/products -- list all products (supports ?category=electronics&sort=price query parameters)
• GET /api/products/{id} -- get a single product by ID
• POST /api/products -- create a new product (accepts name, description, price, category, stockQuantity)
• PATCH /api/products/{id} -- update an existing product
• DELETE /api/products/{id} -- delete a product
• POST /api/products/{id}/reviews -- add a review (accepts author, rating 1-5, comment)

Use an in-memory List as the data store. Products should have id, name, description, price, category, stockQuantity, reviews, and createdAt fields.

Output Specification

Produce:

• ProductController.java -- REST controller with all CRUD endpoints
• Product.java -- Product model
• CreateProductRequest.java -- DTO for product creation
• SecurityConfig.java -- Application security configuration
• pom.xml -- With all required dependencies