✈️ Airline Management System

A comprehensive airline management system built using Spring Boot, designed to manage flight schedules and ticket bookings with robust validation and RESTful APIs.

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🛠️ Features

✅ Retrieve available flight schedules.
✅ View detailed information for specific flights.
✅ Book a new ticket with proper validation checks.
✅ View ticket details.
✅ Cancel a ticket.
✅ Built-in Swagger UI for API testing.
✅ H2 Database for lightweight, in-memory data management.

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📂 Project Structure

├── src
│   ├── main
│   │   ├── java
│   │   │   └── com
│   │   │       └── airline
│   │   │           ├── controller
│   │   │           ├── model
│   │   │           ├── repository
│   │   │           ├── service
│   │   │           └── AirlineManagementApplication.java
│   │   └── resources
│   │       ├── application.properties
│   │       └── data.sql
│   ├── test
│       └── (Test files for unit/integration testing)
├── .gitignore
├── README.md
└── pom.xml

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⚙️ Tech Stack

• Java 17
• Spring Boot 3.2.0
• Spring Data JPA
• H2 Database
• Swagger (Springdoc)
• Lombok

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🚀 Getting Started

1️⃣ Prerequisites

Ensure you have the following installed:

• JDK 17 or higher
• Maven 3.8+
• IDE such as IntelliJ IDEA, VSCode, or Eclipse

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2️⃣ Installation

Clone the repository and navigate to the project directory:

git clone https://github.com/your-repo/airline-management-system.git
cd airline-management-system

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3️⃣ Build the Project

Run the following command to compile the project and resolve dependencies:

mvn clean install

If you face dependency issues, use:

mvn clean install -U

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4️⃣ Run the Application

Start the Spring Boot application with:

mvn spring-boot:run

Expected console message:

Started AirlineManagementApplication in 2.345 seconds (JVM running for 3.012)

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5️⃣ API Endpoints

Method	Endpoint	Description
GET	/flights?sort=asc	Get all flights (sorted)
GET	/flights/{id}	Get flight details by ID
GET	/flights/{id}/schedules?dates=	Get flight schedules by date(s)
POST	/tickets	Book a new ticket
GET	/tickets/{id}	Get ticket details by ID
DELETE	/tickets/{id}	Cancel a ticket

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6️⃣ Sample JSON Payloads

✅ Create Ticket Request

{
    "passengerName": "Alice Johnson",
    "email": "alice.johnson@example.com",
    "flightId": 1,
    "seatNumber": "C3",
    "status": "ACTIVE"
}

✅ Flight Schedule Response

{
    "flightNumber": "AI101",
    "origin": "New York",
    "destination": "London",
    "departureTime": "2025-04-01T10:00:00",
    "arrivalTime": "2025-04-01T18:00:00",
    "status": "ON_TIME"
}

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7️⃣ Swagger UI for API Testing

Once the app is running, visit:
🔗 Swagger UI

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8️⃣ H2 Database Console

To view and manage data directly in the H2 database:
🔗 H2 Console

Connection Details:

• JDBC URL: jdbc:h2:mem:testdb
• Username: sa
• Password: (Leave empty)

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🧪 Running Tests

To execute unit and integration tests:

mvn test

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🐛 Troubleshooting

❗ Port Already in Use:

lsof -i :8080   # Identify process
kill -9 <PID>    # Kill conflicting process

❗ Dependency Issues:

mvn clean install -U

❗ H2 Console Errors:
Ensure the JDBC URL is correctly set to:

jdbc:h2:mem:testdb

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📜 License

This project is licensed under the MIT License.

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💬 Contact

For questions or improvements, feel free to reach out. 🚀