NexTalk is a modern messaging application built with Flutter and Firebase, featuring dual authentication methods (email/password + Google Sign-In), real-time chat capabilities, WhatsApp-style UI with gradient themes, and MVVM architecture. It delivers a professional messaging experience with Material Design 3 components and seamless dark/light mode switching.

• 🔐 Dual Authentication - Email/Password and Google Sign-In integration
• 💬 Real-Time Messaging - Instant chat with WhatsApp-style message bubbles
• 🎨 Dynamic Theming - Beautiful gradient themes with dark/light mode toggle
• 🔍 Advanced Search - Find users and conversations instantly
• 🏗️ MVVM Architecture - Clean, scalable code structure with Provider state management
• 📱 Material Design 3 - Modern UI components with smooth animations
• 🔔 Push Notifications - Firebase Cloud Messaging integration
• 🌐 Cross-Platform - Native performance on Android and iOS

Login Screen	Chat List	Chat Detail	Dark Theme

lib/
│
├── main.dart                           # Application entry point
├── models/
│   ├── user_model.dart                # User data model
│   └── message_model.dart             # Message data model
├── services/
│   ├── auth_service.dart              # Firebase authentication service
│   └── chat_service.dart              # Chat and messaging service
├── viewmodels/
│   ├── auth_viewmodel.dart            # Authentication business logic
│   ├── chat_list_viewmodel.dart       # Chat list state management
│   ├── chat_detail_viewmodel.dart     # Chat detail state management
│   └── theme_provider.dart            # Theme state management
├── views/
│   ├── splash_screen.dart             # App splash screen
│   ├── login_screen.dart              # Authentication screen
│   ├── chat_list_screen.dart          # Main chat list screen
│   └── chat_detail_screen.dart        # Individual chat screen
├── widgets/
│   ├── message_bubble.dart            # WhatsApp-style message bubbles
│   ├── user_tile.dart                 # User list tile widget
│   └── loading_indicator.dart         # Custom loading widget
└── utils/
    └── theme.dart                     # App theme configuration

• 🏛️ MVVM Architecture - Clean separation of concerns with Model-View-ViewModel pattern
• 🔥 Firebase Integration - Authentication, Realtime Database, and Cloud Messaging
• 📊 State Management - Efficient Provider pattern implementation
• 🎨 Custom UI Design - Material Design 3 with gradient themes and animations
• 🔐 Security - Multi-factor authentication and secure data handling
• ⚡ Performance - Optimized list rendering and efficient state updates
• 🧪 Code Quality - Maintainable, scalable, and well-documented codebase

• Flutter (Dart) - Cross-platform mobile development framework
• Firebase - Authentication, Realtime Database, Cloud Messaging
• Provider - State management solution
• Material Design 3 - Modern UI components and design system
• Google Sign-In - OAuth integration for seamless authentication

• Flutter SDK (version 3.8.1 or higher)
• Dart SDK (included with Flutter)
• VS Code or Android Studio with Flutter plugin
• Firebase project (with Authentication and Realtime Database enabled)

1. Clone the repository

   git clone https://github.com/M-Attaullah/Chat-App.git
   cd Chat-App

2. Install dependencies

   flutter pub get

3. Configure Firebase

   • Add your google-services.json (Android) and GoogleService-Info.plist (iOS) to the respective platform folders.
   • Enable Email/Password authentication in Firebase Console.
   • Set up Realtime Database with appropriate security rules

4. Run the app

   flutter run

dependencies:
  flutter:
    sdk: flutter
  firebase_core: ^2.30.0              # Firebase core functionality
  firebase_auth: ^4.17.8              # Firebase authentication
  firebase_database: ^10.4.8          # Realtime database
  firebase_messaging: ^14.7.20        # Push notifications
  google_sign_in: ^6.2.1              # Google Sign-In integration
  provider: ^6.1.2                    # State management
  connectivity_plus: ^5.0.2           # Network connectivity
  flutter_local_notifications: ^17.0.0 # Local notifications
  intl: ^0.19.0                       # Internationalization
  uuid: ^4.3.3                        # Unique ID generation

• 📸 Media sharing (images, videos)
• 👥 Group chat functionality
• 🎵 Voice message support
• 📍 Location sharing
• 🔔 Custom notification settings
• 📊 Message read receipts
• 🌍 Multi-language support
• 🔒 End-to-end encryption

Muhammad Attaullah
Feel free to connect or contribute to this project.

M-Attaullah
Muhammad Attaullah

📌 This app was developed as part of a Flutter development project showcasing MVVM architecture, Firebase integration, and modern UI design with real-time messaging capabilities.