MonoMart

MonoMart is a modern, single-vendor e-commerce backend application built with Spring Boot 3, PostgreSQL, and JWT authentication. It provides a complete RESTful API for managing products, categories, shopping carts, orders, and user authentication with role-based access control.

🌟 Features

Core Functionality

• User Management: Registration, authentication, and role-based access (USER/ADMIN)
• Product Catalog: Full CRUD operations for products with category organization
• Category Management: Hierarchical product categorization
• Shopping Cart: Add, update, remove items with persistent cart functionality
• Order Processing: Create orders from cart, track order status
• JWT Authentication: Secure token-based authentication with refresh tokens

Technical Highlights

• Modern Stack: Spring Boot 3.3.2 with Java 17
• Database: PostgreSQL with Liquibase migrations
• Security: Spring Security with JWT tokens
• API Documentation: Swagger/OpenAPI integration
• Data Mapping: MapStruct for efficient DTO mappings
• Validation: Bean validation with custom validators
• CORS: Configurable cross-origin resource sharing
• Containerized: Docker and Docker Compose ready

🏗️ Architecture

├── controller/          # REST API endpoints
├── service/            # Business logic layer
├── repository/         # Data access layer
├── domain/            # Entity models
├── dto/               # Data transfer objects
├── security/          # JWT and authentication
├── config/            # Application configuration
└── exception/         # Global exception handling

🌐 API Documentation

Swagger UI

Once the application is running, access the interactive API documentation:

• Swagger UI: http://localhost:8080/swagger-ui.html
• OpenAPI JSON: http://localhost:8080/api-docs

API Endpoints Overview

Authentication

• POST /api/v1/auth/signup - User registration
• POST /api/v1/auth/login - User login
• POST /api/v1/auth/admin/login - Admin login
• POST /api/v1/auth/refresh - Refresh JWT token

Products

• GET /api/v1/products - List products (paginated)
• GET /api/v1/products/{id} - Get product details
• POST /api/v1/products - Create product (Admin only)
• PUT /api/v1/products/{id} - Update product (Admin only)
• DELETE /api/v1/products/{id} - Delete product (Admin only)

Categories

• GET /api/v1/categories - List all categories
• GET /api/v1/categories/{id} - Get category details
• POST /api/v1/categories - Create category (Admin only)
• PUT /api/v1/categories/{id} - Update category (Admin only)
• DELETE /api/v1/categories/{id} - Delete category (Admin only)

Shopping Cart

• GET /api/v1/cart - Get user’s cart
• POST /api/v1/cart/items - Add item to cart
• PUT /api/v1/cart/items/{id} - Update cart item
• DELETE /api/v1/cart/items/{id} - Remove cart item
• DELETE /api/v1/cart - Clear entire cart

Orders

• GET /api/v1/orders - List all orders (Admin) or user orders
• GET /api/v1/orders/{id} - Get order details
• POST /api/v1/orders - Create order from cart
• PUT /api/v1/orders/{id}/status - Update order status (Admin only)

Sample API Usage

Register a new user

curl -X POST http://localhost:8080/api/v1/auth/signup \
  -H "Content-Type: application/json" \
  -d '{
    "username": "john",
    "email": "john@example.com",
    "password": "Passw0rd!"
  }'

Login and get JWT token

curl -X POST http://localhost:8080/api/v1/auth/login \
  -H "Content-Type: application/json" \
  -d '{
    "usernameOrEmail": "john",
    "password": "Passw0rd!"
  }'

Access protected endpoints

curl -X GET http://localhost:8080/api/v1/cart \
  -H "Authorization: Bearer YOUR_JWT_TOKEN"

MonoMart - Building the future of e-commerce, one API at a time! 🚀

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