🍽️ Mini Food Ordering Console App (Beta)

A console-based food ordering system for Admins and Customers built with Java 🧑‍💻

This Beta version of the Mini Food Ordering App allows an Admin to manage menus, discounts, and delivery partners, while Customers can browse menus, place orders, and receive printed invoices — all through a console interface.

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✅ Key Features

#👩‍💼Admin Functionalities #

➕ Add/Delete Menus and Menu Items (with IDs)

🏷️ Set Discount Percentage

📃 View Menu List

🚚 Manage Delivery Partners

📃 View Customer Invoices

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#👩‍🍳 Customer Functionalities #

📖 View Menus

➕➖ Add/Delete Items to Cart (via Menu ID & Item ID)

🛒 View Cart

💰 View Total Price (with applied discounts)

🧾 Make Payment (UPI / Cash)

🧍 Assigned Delivery Partner

🧾 Generate Invoice

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📌 Functional Scope

• ✅ Menu Display: Dynamic list of food items by menu
• ✅ Order Placement: Customer selects items and quantities
• ✅ Discount System: Flat discount applied if total > ₹500 🤑
• ✅ Payment Options: Choose between Cash 💵 or UPI 📱
• ✅ Delivery Assignment: Random assignment to available delivery agents
• ✅ Invoice Generation: Print full bill with items, quantities, price, discount, total, payment method, and delivery partner and also store it using serialization concept

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🔍 SOLID Design Principles Used

🧱 Principle ✅ Implementation

S - Single Responsibility Each class does one job only — e.g., MenuManager manages menus, OrderManager handles cart logic, InvoiceGenerator generates invoices.

O - Open/Closed System is open for extension, closed for modification — e.g., new payments/discounts can be added without changing existing classes using interfaces.

L - Liskov Substitution Subtypes like CashPayment, UpiPayment are interchangeable via IPaymentService abstraction.

I - Interface Segregation Interfaces are granular and focused — e.g., IMenuViewer, IMenuManager, IDeliveryService.

D - Dependency Inversion High-level modules (Customer, etc.) depend on interfaces, not concrete classes — promoting flexibility and testability.

🛠️ Technologies Used

☕ Java 17 🧭 Object-Oriented Programming 🖥️ Console-based User Interaction 🧱 SOLID Design Principles

🚀 How to Run git clone https://github.com/yourusername/food-ordering-console-app.git cd food-ordering-console-app

➡️ Open the project in your favorite IDE (e.g., IntelliJ IDEA, Eclipse). ➡️ Run FoodOrderingDriver.java from the com.aurionpro.tests package to start the application.