QR Bus Ticket Generating System

🚍 Welcome to the QR Bus Ticket Generating System! This project streamlines bus ticket booking with modern technologies like Google Cloud APIs and QR codes.

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🚀 Features

1. 🔒 Secure User Management

   • User sign-up and login with bcrypt for password hashing.
   • Unique User IDs generated via database triggers.

2. 📍 Location-Based Ticketing

   • Calculates distance and travel duration using Google Cloud Distance Matrix API.
   • Dynamic fare calculation based on distance.

3. 🎟️ QR Code Tickets

   • QR codes generated for tickets using the goqr.me API.
   • Tickets can be scanned for validation.

4. 💾 Database Management

   • MySQL database to store user and trip information.
   • Automated ID generation for users and trips using SQL triggers.

5. 🛠️ Modular and Scalable

   • Built with Maven for dependency management.
   • Organized into clear, reusable components.

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🛠️ Technologies Used

• Java
• Maven
• Google Cloud Distance Matrix API
• goqr.me API
• bcrypt
• MySQL

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⚙️ Setup Instructions

1. Clone the repository and navigate to the project directory.

2. Set up a MySQL database and execute the provided schema and triggers.

3. Configure API keys for:

   • Google Cloud Distance Matrix API.
   • goqr.me API.

4. Configure the .env file

   • GOOGLE_MAPS_API_KEY
   • DB_URL
   • DB_USERNAME
   • DB_PASSWORD
   • QR_API_URL

5. Build the project with Maven:

   mvn clean install

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Demo Video - Link

📊 Database Schema

🧑‍🤝‍🧑Users Table

CREATETABLEUsers (
user_id VARCHAR(10) PRIMARY KEY,
name VARCHAR(50) NOT NULL,
email VARCHAR(75) UNIQUE NOT NULL,
password VARCHAR(60) NOT NULL,
phone VARCHAR(10),
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

Trigger for User ID Generation:

DELIMITER $$
CREATETRIGGERbefore_insert_users BEFORE INSERT ON Users FOR EACH ROW BEGIN
DECLARE next_id INT;
SELECT COALESCE(MAX(CAST(SUBSTRING(user_id, 2) AS UNSIGNED)), 0) +1 INTO next_id FROM Users;
SETNEW.user_id= CONCAT('U', LPAD(next_id, 4, '0'));
END$$;
DELIMITER ;

🛣️Trips Table

CREATETABLETrips (
trip_id VARCHAR(10) PRIMARY KEY,
start_location VARCHAR(100) NOT NULL,
end_location VARCHAR(100) NOT NULL,
distance VARCHAR(20) NOT NULL,
duration VARCHAR(20) NOT NULL,
fare DECIMAL(10, 2) NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

Trigger for Trip ID Generation:

DELIMITER $$
CREATETRIGGERbefore_insert_trips BEFORE INSERT ON Trips FOR EACH ROW BEGIN
DECLARE next_id INT;
SELECT COALESCE(MAX(CAST(SUBSTRING(trip_id, 2) AS UNSIGNED)), 0) +1 INTO next_id FROM Trips;
SETNEW.trip_id= CONCAT('R', LPAD(next_id, 4, '0'));
END$$;
DELIMITER ;

🎟️Tickets Table

CREATETABLETickets (
ticket_id VARCHAR(10) PRIMARY KEY,
user_name VARCHAR(50) NOT NULL,
start_location VARCHAR(100) NOT NULL,
end_location VARCHAR(100) NOT NULL,
distance VARCHAR(20) NOT NULL,
duration VARCHAR(20) NOT NULL,
total_fare DECIMAL(10, 2) NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

Trigger for Ticket ID Generation:

DELIMITER $$
CREATETRIGGERbefore_insert_tickets BEFORE INSERT ON Tickets FOR EACH ROW BEGIN
DECLARE next_id INT;
SELECT COALESCE(MAX(CAST(SUBSTRING(ticket_id, 2) AS UNSIGNED)), 0) +1 INTO next_id FROM Tickets;
SETNEW.ticket_id= CONCAT('T', LPAD(next_id, 4, '0'));
END$$
DELIMITER ;

💺Seats Table

CREATETABLESeats (
seat_id VARCHAR(10) NOT NULLPRIMARY KEY,
ticket_id VARCHAR(10) NOT NULL,
user_id VARCHAR(10) NOT NULL,
availability TINYINT(1) NOT NULL DEFAULT 1
);

Trigger for Seat ID Generation:

DELIMITER $$
CREATETRIGGERbefore_insert_seats
BEFORE INSERT ON Seats
FOR EACH ROW
BEGIN
DECLARE next_id INT;
SELECT COALESCE(MAX(CAST(SUBSTRING(seat_id, 2) AS UNSIGNED)), 0) +1 INTO next_id
FROM Seats;
SETNEW.seat_id= CONCAT('S', LPAD(next_id, 4, '0'));
END;
DELIMITER ;

Trigger to Limit the Seat Count to 50:

DELIMITER $$
CREATETRIGGERlimit_seats_before_insert
BEFORE INSERT ON Seats
FOR EACH ROW
BEGIN
DECLARE row_count INT;
-- Count the current number of rows in the tableSELECTCOUNT(*) INTO row_count FROM Seats;
-- Check if the row count exceeds 50
IF row_count >=50 THEN
SIGNAL SQLSTATE '45000'SET MESSAGE_TEXT ='Cannot add more rows. Maximum seat limit (50) reached.';
END IF;
END;
DELIMITER ;

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🌟 Future Enhancements

• Integrate a payment gateway for online payments.
• Add analytics for trip data.
• Upgrade the user interface with modern frameworks.

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👤 Support

For support, email malandealwis@gmail.com