Chat App

A simple chat application built using Jetpack Compose, Clean Architecture, StateFlow, Coroutines, and MVVM.

Project Structure

presentation/ ChatViewModel ChatScreen

domain/ SendMessageUseCase ChatRepository (interface)

data/ ChatRepositoryImpl

🏗 Architecture

The project follows Clean Architecture with 3 layers:

• Presentation (ViewModel, UI - Compose)
• Domain (Model, UseCases, Repository interface)
• Data (Repository implementation)

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🛠 Tech Stack

• Kotlin
• Jetpack Compose
• Coroutines
• StateFlow (Used as it is lifecycle agnostic)
• Hilt (Dependency Injection)
• JUnit & Mockito (Testing)

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▶️ How to Build & Run

1. Clone the repository
2. Open in Android Studio Hedgehog or newer
3. Sync Gradle
4. Run on emulator or physical device (API 24+)

🧪 Running Tests

To run unit tests:

• Right click test package → Run Tests

📦 Key Features

• Send messages
• Auto reply simulation after 5 second
• Auto-scroll Chat view
• Unit tests for Presentation, UseCase & Repository
• Edge cases not handled
• Testing coverage

Future Improvements

• TBD

👤 Author

Bhagyashri Patil

📄 License

This project is open-source and available under the MIT License.