Flight Search Application

A modern flight search web application built with Flask and Firebase, featuring multi-currency support and comprehensive airport coverage.

🌟 Features

• 🔐 Firebase Authentication - Google Sign-In and Email/Password
• 🌍 Multi-Currency Support - 23+ currencies with real-time conversion
• ✈️ Comprehensive Airport Database - 150+ international airports
• 🎨 Modern UI - Glassmorphism design with responsive layout
• 🔍 Advanced Search - Price filters, travel class selection, passenger count
• 📱 Mobile Responsive - Optimized for all device sizes
• 🚀 Real-time Results - Live flight search with detailed information

🚀 Live Demo

Deploy your own instance to Vercel and add the URL here!

Tech Stack

• Frontend: HTML5, CSS3, JavaScript (Vanilla)
• Backend: Python Flask
• Authentication: Firebase Authentication
• Flight Data: Amadeus for Developers API
• Styling: Modern CSS with glassmorphism effects

Prerequisites

1. Firebase Project

   • Create a Firebase project at Firebase Console
   • Enable Authentication with Email/Password and Google providers
   • Download service account key (JSON file)

2. Amadeus API

   • Register at Amadeus for Developers
   • Create a new application to get Client ID and Client Secret
   • Use the test environment initially

3. Python Environment

   • Python 3.7 or higher
   • pip package manager

Setup Instructions

1. Clone and Install Dependencies

# Navigate to project directory
cd "Check Flight Status"

# Install Python dependencies
pip install -r requirements.txt

2. Configure Environment Variables

Create a .env file in the project root:

# Amadeus API Credentials
AMADEUS_CLIENT_ID=your_amadeus_client_id_here
AMADEUS_CLIENT_SECRET=your_amadeus_client_secret_here

# Firebase Admin SDK
FIREBASE_SERVICE_ACCOUNT_KEY=path/to/your/firebase-service-account-key.json

3. Firebase Configuration

1. Get Firebase Config:

   • Go to Firebase Console → Project Settings → General
   • Scroll down to "Your apps" and click "Web app"
   • Copy the config object

2. Update JavaScript Config:

   • Open script.js
   • Replace the firebaseConfig object with your actual config:

const firebaseConfig = {
    apiKey: "your-actual-api-key",
    authDomain: "your-project-id.firebaseapp.com",
    projectId: "your-project-id",
    storageBucket: "your-project-id.appspot.com",
    messagingSenderId: "your-sender-id",
    appId: "your-app-id"
};

3. Download Service Account Key:
   • Go to Firebase Console → Project Settings → Service Accounts
   • Click "Generate new private key"
   • Save the JSON file and update the path in .env

4. Enable Authentication Providers

In Firebase Console:

1. Go to Authentication → Sign-in method
2. Enable "Email/Password"
3. Enable "Google" and configure OAuth consent screen

5. Run the Application

# Start the Flask backend
python app.py

The application will be available at: http://localhost:5000

Project Structure

Check Flight Status/
├── app.py                 # Flask backend with API endpoints
├── index.html            # Main HTML file with auth and search UI
├── style.css             # Responsive CSS with glassmorphism design
├── script.js             # Frontend JavaScript with Firebase auth
├── requirements.txt      # Python dependencies
├── .env                  # Environment variables (create this)
├── .gitignore           # Git ignore file
└── README.md            # This file

API Endpoints

Backend Endpoints

• GET / - Serve the main application
• GET /api/health - Health check endpoint
• POST /api/flights/search - Search flights (requires authentication)
• GET /api/airports/search - Airport search for autocomplete

Authentication

All flight search endpoints require a valid Firebase ID token in the Authorization header:

Authorization: Bearer <firebase-id-token>

Usage

1. Authentication:

   • Open the website
   • Sign up with email/password or use Google Sign-In
   • Once logged in, you'll see the flight search interface

2. Search Flights:

   • Enter origin and destination airport codes (e.g., CCU, BKK)
   • Optionally select departure date and price range
   • Click "Search Flights" to get results

3. View Details:

   • Click on any flight card to see detailed information
   • View airline details, flight times, and amenities

Configuration Notes

Amadeus API

• The project uses Amadeus test environment by default
• Test environment has limited data but doesn't require payment
• For production, change AMADEUS_BASE_URL to production endpoint
• Mock data is used as fallback when API is not configured

Firebase Security

• ID tokens are verified on the backend using Firebase Admin SDK
• Only authenticated users can access flight search endpoints
• Tokens expire automatically and need refresh

Development vs Production

Development:

• Uses mock flight data if Amadeus API is not configured
• Debug mode enabled in Flask
• Detailed error logging

Production:

• Configure real Amadeus API credentials
• Set Flask debug mode to False
• Use environment variables for all secrets
• Deploy with proper HTTPS

Troubleshooting

Common Issues

1. Firebase Authentication Error:

   • Check if Firebase config is correct in script.js
   • Verify that authentication providers are enabled
   • Ensure service account key path is correct

2. Amadeus API Error:

   • Verify API credentials in .env file
   • Check if API quota is not exceeded
   • Ensure airport codes are valid IATA codes

3. CORS Issues:

   • Flask-CORS is configured to allow all origins in development
   • For production, configure specific allowed origins

4. Module Import Errors:

   • Ensure all dependencies are installed: pip install -r requirements.txt
   • Use virtual environment for better dependency management

Virtual Environment (Recommended)

# Create virtual environment
python -m venv flight-search-env

# Activate virtual environment
# Windows:
flight-search-env\Scripts\activate
# Linux/Mac:
source flight-search-env/bin/activate

# Install dependencies
pip install -r requirements.txt

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Test thoroughly
5. Submit a pull request

License

This project is licensed under the MIT License.

Support

For issues and questions:

1. Check the troubleshooting section
2. Review Firebase and Amadeus documentation
3. Check browser console for JavaScript errors
4. Review Flask logs for backend errors

Security Notes

• Never commit .env file or service account keys to version control
• Use HTTPS in production
• Regularly rotate API keys and secrets
• Implement rate limiting for production use
• Validate all user inputs on both frontend and backend