Modern Android Coffee Shop app built with Jetpack Compose
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Finjan is a full-featured Android coffee shop application built with Kotlin and Jetpack Compose. It follows a clean MVVM architecture with Hilt dependency injection, a Room-backed local database, Firebase cloud services, Stripe payments, and a comprehensive security layer.
- Email/Password sign-in and sign-up
- Google Sign-In via Credential Manager API
- Password reset via email
- Password change with re-authentication
- Biometric authentication support
- Rate-limited login attempts
- Product browsing with image cards
- Category filtering and featured items
- Real-time menu updates from Firestore
- Dynamic QR code generation for loyalty points
- Local Room-based cart with quantity management
- Promo code and loyalty points validation
- Full checkout flow with order placement
- Stripe payment integration
- Order placement and real-time status tracking via Firestore
- Order history screen
- Order tracking screen with live updates
- Add/remove products from a local favorites list
- Favorites count badge
- Search with persistent local history (Room)
- Clear individual or all recent searches
- Dynamic offers fetched from Firestore
- Promo code validation at checkout
- User profile with photo support (Coil)
- Edit profile and change password
- Dark / Light theme toggle (DataStore-persisted)
- Notification preferences
- Legal documents (Terms & Privacy Policy)
- Language / locale support
- Stripe payment method management (add / delete)
- Saved payment methods stored in Firestore
- Firebase Cloud Messaging (FCM) integration
- FCM token management and updates
- Order status and promotional notifications via
NotificationHelper
- Input validation and sanitization (
InputValidator) - SQL injection pattern detection
- Rate limiting (
RateLimiter) - Encrypted shared preferences (
SecurePreferencesManager) - Session management (
SessionManager)
- Hilt dependency injection across all layers
- Repository pattern with interface abstractions (
IFirestoreRepository,ILocalRepository,ILegalRepository) - WorkManager background tasks
- Deep link support (
DeepLinkManager) - Network connectivity monitoring
- Firebase Analytics, Remote Config, and Crashlytics
- Android Baseline Profiles for startup performance
| Layer | Technology |
|---|---|
| Language | Kotlin 2.0 |
| UI | Jetpack Compose, Material 3 |
| Architecture | MVVM + Repository pattern |
| DI | Hilt |
| Navigation | Compose Navigation (type-safe routes) |
| Local Storage | Room, DataStore, Security Crypto |
| Remote Storage | Firebase Firestore |
| Authentication | Firebase Auth, Google Identity, Biometric |
| Payments | Stripe Android SDK |
| Push Notifications | Firebase Cloud Messaging |
| Analytics / Monitoring | Firebase Analytics, Remote Config, Crashlytics |
| Image Loading | Coil |
| Animations | Lottie Compose |
| Background Work | WorkManager |
| Testing | JUnit 4, MockK, Turbine, Coroutines Test |
| Static Analysis | Detekt |
| Performance | Baseline Profiles |
APK Hashes:
SHA-1: e3e38991a470b6ca06e94a0b6b13091d6e8c6531
SHA-256: 144d9c50416eae8a792e385639d82aedc9ed14494e3397cdc7d5fa17cc819785
SHA-512: 8b097e8f6984f1993339a205b34d4009f6a11620ac3ff9c790974eea5f307ee63c1f826d735aeffed50d1c21beb350ce8d380d70b549d891660d81fc12c76ba3
Project's Link: https://github.com/ahmeddwalid/Finjan
Any contributions you make are greatly appreciated.
If you'd like to contribute, please follow these steps:
- Fork the repository: Create your own copy of the project.
- Create a branch:
git checkout -b feature/your-feature-name - Implement your contribution
- Commit your changes:
git commit -m "your descriptive commit message" - Push to the branch:
git push origin feature/your-feature-name - Create a pull request: Submit your changes for review.
- Please ensure your code follows MVVM design pattern.
- Write clear and concise commit messages.
- Provide detailed explanations in your pull requests.
- Be respectful and considerate of other contributors.
Thank you for your contributions!
This project is distributed under the Apache 2.0 license. See
LICENSE.txt for more information.