🍽️ Restaurant Cafe Billing System

A full-stack Restaurant Billing System built with Spring Boot, Next.js, and PostgreSQL.

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📸 Features

• 🍛 Menu Management — Add, edit, delete menu items with categories
• 👥 Customer Management — Manage customer records
• 🧾 Billing System — Create bills with multiple items, tax and discount
• 💵 Payment Methods — Cash, Card, UPI
• 🗄️ Database — PostgreSQL with pgAdmin support
• 🔗 REST API — Tested with Postman

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🛠️ Tech Stack

Layer	Technology
Backend	Java + Spring Boot 4.0.2
Frontend	Next.js 15 + TypeScript
Database	PostgreSQL 16
ORM	Hibernate / Spring Data JPA
Styling	Tailwind CSS
API Testing	Postman
Version Control	GitHub

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📁 Project Structure

restaurant-billing/
├── billing/                          # Spring Boot Backend
│   └── src/main/java/com/resturant/billing/
│       ├── controller/
│       │   ├── MenuController.java
│       │   ├── CustomerController.java
│       │   └── OrderController.java
│       ├── model/
│       │   ├── MenuItem.java
│       │   ├── Customer.java
│       │   ├── Order.java
│       │   └── OrderItem.java
│       ├── repository/
│       │   ├── MenuItemRepository.java
│       │   ├── CustomerRepository.java
│       │   └── OrderRepository.java
│       └── BillingApplication.java
│
├── frontend/                         # Next.js Frontend
│   └── app/
│       ├── page.tsx                  # Dashboard
│       ├── menu/page.tsx             # Menu Management
│       ├── customers/page.tsx        # Customer Management
│       └── billing/page.tsx          # Billing & Invoice
│
└── README.md

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🗄️ Database Schema

users        → Staff and Admin accounts
menu_items   → Food and Beverage items
customers    → Customer records
orders       → Bills and Invoices
order_items  → Items inside each bill

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🚀 Getting Started

Prerequisites

• Java 17+
• Node.js 18+
• PostgreSQL 16
• Maven

1️⃣ Database Setup

psql postgres
CREATE DATABASE restaurant_billing;

2️⃣ Backend Setup

cd billing
./mvnw spring-boot:run

Backend runs on: http://localhost:8080

3️⃣ Frontend Setup

cd frontend
npm install
npm run dev

Frontend runs on: http://localhost:3000

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🌐 API Endpoints

Menu

Method	Endpoint	Description
GET	/api/menu	Get all menu items
POST	/api/menu	Add new menu item
PUT	/api/menu/{id}	Update menu item
DELETE	/api/menu/{id}	Delete menu item

Customers

Method	Endpoint	Description
GET	/api/customers	Get all customers
POST	/api/customers	Add new customer
PUT	/api/customers/{id}	Update customer
DELETE	/api/customers/{id}	Delete customer

Orders

Method	Endpoint	Description
GET	/api/orders	Get all orders
POST	/api/orders	Create new bill

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🧪 Postman Examples

Add Menu Item

POST http://localhost:8080/api/menu
{
  "name": "Masala Dosa",
  "description": "Crispy dosa with chutney",
  "price": 80.00,
  "category": "Main Course",
  "available": true
}

Create Bill

POST http://localhost:8080/api/orders
{
  "customerId": 1,
  "tableNumber": 5,
  "paymentMethod": "cash",
  "discount": 20.00,
  "items": [
    { "menuItemId": 1, "quantity": 2 },
    { "menuItemId": 3, "quantity": 1 }
  ]
}

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📱 Pages

Page	URL	Description
Dashboard	/	Home with navigation
Menu	/menu	Manage food items
Customers	/customers	Manage customers
Billing	/billing	Create bills and invoices

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👨‍💻 Developer

W.A. Paramith Kavisha

• GitHub: @Paramith2004

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📄 License

This project is for educational purposes.