📱 ChatApp - A Real-Time Flutter Messaging App

ChatApp is a modern, feature-rich messaging application built with Flutter and Firebase. It offers a seamless real-time communication experience with a focus on clean UI and robust backend integration.

---

🚀 Features

🔐 Authentication

• Email & Password: Standard login and signup flow.
• Phone Authentication: Secure login using OTP (One-Time Password) via Firebase Phone Auth.
• Password Recovery: Forgot password functionality for email-based accounts.
• Persistent Login: Automatically detects and restores user sessions.

💬 Messaging

• User Search: Find other users by their email or username.
• Real-time Chatting: Instant message delivery and updates powered by Cloud Firestore.
• Group Chats: Create and manage groups, chat with multiple users simultaneously.
• Message Encryption: Secure conversations with encrypted messages.
• Push Notifications: Receive alerts for new messages even when the app is in the background.

🎨 UI/UX

• Premium "About Us" Page: A beautifully designed page showcasing the developer and mission.
• Custom UI Utilities: Consistent styling with a custom UiHelper class for buttons, text fields, and alerts.
• Responsive Design: Optimized for various screen sizes.

👤 Profile

• Profile Management: Option to upload profile pictures to Firebase Storage.

---

🛠️ Tech Stack

• Frontend: Flutter (Dart)
• Backend: Firebase
  • Firebase Auth: For secure user authentication.
  • Cloud Firestore: For real-time database and chat history.
  • Firebase Storage: For storing profile pictures and media.
  • Firebase Messaging (FCM): For cross-platform push notifications.
• State Management: BLoC (Business Logic Component) pattern for robust, scalable state management.
• Architecture: Clean Architecture / Feature-first structure.

---

📂 Project Structure

lib/
├── app/                  # App setup, routing, and themes
├── core/                 # Shared widgets, utilities, constants, and extensions
├── data/                 # Repositories, models, and data sources 
├── features/             # Feature-first modules (Auth, Home, Chat, Group, etc.)
│   ├── about/            # About Us feature
│   ├── auth/             # Authentication & Sign up
│   ├── chat_room/        # 1-on-1 Chat facility
│   ├── group_chat_room/  # Group Chat facility
│   ├── group_list/       # Listing user groups
│   ├── home/             # Main Dashboard
│   ├── search/           # Searching users
│   └── splash/           # Splash screen and initialization
└── main.dart             # Application entry point

---

⚙️ Getting Started

Prerequisites

• Flutter SDK installed (Guide)
• Firebase Project set up on the Firebase Console

Installation

1. Clone the repository:

   git clone https://github.com/ShubhangDoley/ChatApp.git
   cd ChatApp

2. Install dependencies:

   flutter pub get

3. Firebase Setup:

   • Follow the FlutterFire guide to configure your app for Android and iOS.
   • Add your google-services.json (Android) and GoogleService-Info.plist (iOS) to the respective directories.

4. Run the app:

   flutter run

---

📜 License

This project is for educational purposes. Feel free to use and modify it!