AirIn is a full-stack airline online check-in system that lets passengers complete their check-in remotely, before arriving at the airport. Through the app, travelers confirm their identity by scanning their passport, choose their preferred seat, declare their baggage, and get a digital boarding pass — with full offline support.

This organization hosts both parts of the project:

• Registration
  • Sign up with name, email, phone number, and password
  • Quick sign-in with Google account
• Flight Lookup & Booking Retrieval
  • Retrieve itinerary and current check-in status via booking reference + last name
• Online Check-In (available from 24h before departure)
  • Passport Scan — OCR extracts identity data from the passport's first page and verifies it against the booking
  • Details Review — passenger confirms personal and travel information
  • Seat Selection — interactive aircraft seat map (available / occupied / premium)
  • Baggage Declaration — number and type of checked bags
  • Special Requests — dietary preferences, assistance needs, infant/pet declarations
  • Confirmation notification sent on completion
• QR Code Boarding Pass
  • Digital boarding pass with a unique QR code, scannable at baggage drop, security, and boarding gate
  • PDF Boarding Pass — downloadable, includes a flight summary
• Offline Mode & Synchronization
  • Flight details and boarding passes cached locally, accessible without internet
  • Automatic sync with the server when connectivity is restored

• Mobile app follows MVVM: Compose UI observes StateFlow from ViewModels, which delegate to repositories that arbitrate between the Django API (Retrofit) and a local Room cache for offline access.
• Backend exposes a REST API for auth, flight/booking lookup, the check-in workflow, and boarding pass generation, and dispatches push notifications via FCM.
• FCM ties the two together: the backend triggers pushes (check-in confirmation, flight/status updates) to the mobile app.

• Language: Kotlin
• UI: Jetpack Compose
• Architecture: MVVM
• Async: Coroutines & Flow
• Networking: Retrofit + OkHttp
• Offline Cache: Room
• Push: Firebase Cloud Messaging (FCM)
• Auth: Google Sign-In
• Passport OCR: CameraX + ML Kit
• QR Code: ZXing
• PDF Generation: Android PdfDocument
• DI: Hilt

• Framework: Django + Django REST Framework
• Database: PostgreSQL
• Auth: JWT + Google OAuth verification
• Push: Firebase Cloud Messaging (FCM)
• PDF Generation: ReportLab
• QR Code: qrcode (Python)

git clone https://github.com/TDM-PROJET/AirIn-backend.git
cd AirIn-backend
python -m venv venv && source venv/bin/activate
pip install -r requirements.txt

Configure .env:

SECRET_KEY=your-secret-key
DEBUG=True
DATABASE_URL=postgres://user:password@localhost:5432/airin
FIREBASE_CREDENTIALS_PATH=path/to/firebase-adminsdk.json
GOOGLE_OAUTH_CLIENT_ID=your-google-client-id

Run migrations and start the server:

python manage.py migrate
python manage.py runserver

git clone https://github.com/TDM-PROJET/AirIn-mobile.git

• Add google-services.json to the app/ module.
• Point the app at your backend, in app/src/main/java/com/example/airin_mobile/network/NetworkConstants.kt:

  API_BASE_URL=http://<your-backend-host>:8000/api/

• Open in Android Studio, sync Gradle, and run.

• Boarding pass, itinerary, and check-in status are persisted locally on the device (Room).
• A connectivity observer triggers a background sync when the device reconnects.
• Users can view their boarding pass and flight info fully offline.

Developed as the final project for 2CS SIL — Techniques de Développement Mobile, École nationale Supérieure d'Informatique (ESI).

Academic project — for educational purposes.