Chat App (Flutter + Backend)

A production-grade Flutter application built with clean architecture, scalable state management, and a secure backend integration. This app is designed for real-world usage with authentication, real-time messaging, and modern UI/UX best practices.

Repository Links

• Frontend (Flutter App)
  https://github.com/VishnuMate27/chat_app_flutter_with_frappe_backend

• Backend (Frappe Custom App)
  https://github.com/VishnuMate27/chat_app_backend_with_frappe_custom_app

 Features

• Secure Authentication (Login / Signup / Logout)
• One-to-One Chat Support
• Chat History & Pagination
• Backend-powered APIs
• Persistent Sessions with Cookies
• Clean Architecture & Scalable Codebase
• Production-ready Error Handling

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Tech Stack

Frontend (Mobile)

• Flutter (Dart)
• State Management: BLoC
• Networking: Dio
• Local Storage: Secure Storage / Shared Preferences
• Dependency Injection: Service Locator

Backend

• Framework: Frappe (Python)
• Authentication: Session-based Auth
• Database: MariaDB
• APIs: REST

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Project Structure

lib/
│── core/
│   ├── constants/
│   ├── error/
│   ├── extensions/
│   ├── network/
│   ├── router/
│   ├── services/
│   └── usecase/
│
│── data/
│   ├── data_source/
│   ├── repositories/
│   └── models/
│
│── domain/
│   ├── entities/
│   ├── repositories/
│   └── usecase/
│
│── presentation/
│   ├── bloc/
│   ├── view/
│   └── widgets/
│
└── main.dart

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Setup & Installation

Prerequisites

• Flutter SDK (3.29.3)
• Dart >= 3.7.2
• Android Studio / VS Code
• Backend server running

Steps

# Clone the repository
git clone https://github.com/VishnuMate27/chat_app_flutter_with_frappe_backend.git
cd chat_app_flutter_with_frappe_backend

# Install dependencies
flutter pub get

# Run the app
flutter run

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Environment Configuration

Create a file:

assets/utils/.env

Example

BASE_URL = "https://your-production-domain.com";

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Architecture

This project follows Clean Architecture:

• Presentation Layer → UI & BLoC
• Domain Layer → Business Logic
• Data Layer → API & Models

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Screenshots

Build for Production

flutter build apk --release
flutter build appbundle

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Author

Vishnu Mate Full Stack Flutter Developer

• GitHub: https://github.com/VishnuMate27
• LinkedIn: https://www.linkedin.com/in/vishnumate/