Application Logic Layer
The application logic layer handles the core logic of the application, including user authentication, message management, and file handling. This layer interacts with the network and data layers to execute business logic.
User Authentication Module: Handles user registration, login, and authentication.
Message Management Module: Manages the sending, receiving, and display of messages, including text, audio, and video.
File Handling Module: Responsible for file uploading, downloading, and encryption.
