Elmenus Lite is a backend service for a restaurant menu and cart management system. It provides RESTful APIs for managing customers, carts, menu items, orders, and related entities. The project is built using an API-first approach, leveraging OpenAPI for documentation

Layered Architecture:

• Controller Layer: Exposes RESTful endpoints, handles HTTP requests/responses.
• Service Layer: Contains business logic, transaction management.
• Repository Layer: Data access using Spring Data JPA.
• Model/Entity Layer: JPA entities representing domain objects.
• DTO/Mapper Layer: Data Transfer Objects and MapStruct mappers for API payloads.
• Exception Handling: Centralized via @ControllerAdvice.

├── src/
│   ├── main/
│   │   ├── java/
│   │   │   └── spring/
│   │   │       └── practice/
│   │   │           └── elmenus_lite/
│   │   │               ├── config/
│   │   │               ├── controller/
│   │   │               ├── dto/
│   │   │               ├── exception/
│   │   │               ├── mapper/
│   │   │               ├── model/
│   │   │               ├── repository/
│   │   │               ├── service/
│   │   │               └── ElmenusLiteApplication.java
│   │   └── resources/
│   │       ├── db/
│   │       └── application.yml

• OpenAPI Specification is used to define and document all REST endpoints.
• Cart Management

• API Endpoints: Add to cart, modify item, view cart, clear cart, remove item, checkout, update quantity
• Database Tables: Cart, Cart Items

• API Endpoints: Sign up, login, logout, reset password, email/SMS verification, user/customer profile, social auth, enable/disable account
• Database Tables: Customer, Restaurant, User, Role, User Type
• Access Management: Role-based access, session management

• API Endpoints: Register/update/enable/disable/view restaurant, create/update/delete/enable/disable menu, view history of menu , top rating restaurants , restaurants recommendations
• Database Tables: Menu, Menu Item, Restaurant, Restaurant Details

• API Endpoints: Place/update/cancel order, order history, order summary, order status, notifications
• Database Tables: Order, Order Item, Order Status, Order Tracking
• Notifications: Email/SMS/push notifications to customer [Order Confirmation]

• API Endpoints: Customer order history, address management, reviews, support, chat, payment integration
• Database Tables: Customer, Address, Review
• Chat Support: Chat Integration

• API Endpoints: Transaction receipt, transaction details, payment integration, auditing, payment status
• Database Tables: Transaction, Transaction Details, Payment Integration, Payment Status
• Auditing & Validation: Auditing payment integration, payment notification/validation

• API Endpoints: System and restaurant analytics, order/payment statistics, customer counts, daily/monthly reports
• Database Tables: System, Reports, Restaurant

• Database: PostgreSQL
• Extension: PostGIS for geospatial queries (e.g., restaurant locations)
• Migration Tool: Liquibase (via XML changelogs) for migrations and versioning