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💬 Chat Application

This chat application is designed to deliver seamless real-time communication with a robust set of features that cater to modern messaging needs. the application ensures efficiency, security, and scalability, making it ideal for both personal and professional use.

📑 Table of Contents

🚀 Features

💬 Real-time Messaging

  • Engage in instant conversations with friends, family, or colleagues. Messages are delivered in real-time, ensuring smooth and uninterrupted communication.

👥 Conversations Management

  • Organize and manage conversations with ease. The application allows users to create, update, and archive chats, keeping communication streamlined and organized.

📁 File Sharing

  • Share images, videos, and documents effortlessly within conversations. The file-sharing feature supports various media types, enabling rich and versatile communication.

🔐 Authentication and Authorization

  • Security is paramount, with user authentication and role-based authorization managed through Keycloak (OAuth2). This ensures that user data is protected and access is appropriately controlled.

🔔 Advanced Notification System

The application features a cutting-edge notification system powered by the NotificationService, which is integral to maintaining real-time communication and user engagement.

📡 Server-Sent Events (SSE) Integration

  • The NotificationService employs SSE to push real-time notifications to users, ensuring they receive timely updates without needing to refresh or poll the server continuously.

❤️ Heartbeat Mechanism

  • A built-in heartbeat mechanism runs at regular intervals to maintain active connections and monitor user presence. This ensures users are accurately tracked as online or offline, enhancing the overall user experience.

⚙️ Dynamic Event Handling

  • Notifications are tailored and sent based on specific events, such as new messages or system alerts. The service dynamically manages these notifications, ensuring users receive relevant information in real-time.

🔄 Efficient User Management

  • The service efficiently manages connections by adding or removing emitters based on user activity. This ensures that only active users are maintained in the system, optimizing resource usage.

🛠️ Technology Stack

☕ Backend

  • Java 17+: Core programming language.
  • Spring Boot 3.x: Framework for building the backend.
  • Keycloak 20+: Used for authentication and authorization (OAuth2).
  • PostgreSQL: Database management system.
  • Liquibase: Database version control.
  • Jilt: Dependency injection utility.
  • Docker Compose: For orchestrating multi-container Docker applications.
  • Lombok: For reducing boilerplate code in Java.

🌐 Frontend

  • Angular 18: Framework for building the frontend.
  • Bootstrap 5.3: Frontend CSS framework for responsive design.
  • FontAwesome: Icons for a modern user interface.
  • Keycloak JS: JavaScript library for Keycloak integration.