async-event-bus

Develop a real-time chat application using Python's 'async-event-bus' package. This application will allow multiple users to join a chat room, send messages, and receive messages from other participants in real-time. Here’s a step-by-step guide on how to build this application:

1. **Setup**: Begin by setting up your development environment with Python 3.x installed. Install the necessary packages including 'async-event-bus'.
2. **Architecture Overview**: Design a system where each user is represented as a participant in a chat room. Use 'async-event-bus' to manage events such as joining a chat, sending a message, and leaving a chat.
3. **Event Bus Initialization**: Initialize the 'async-event-bus' to handle different types of events like 'join', 'message', and 'leave'. Each event should trigger appropriate actions within the application.
4. **User Interface**: Create a simple command-line interface (CLI) for users to interact with the chat application. Users should be able to type commands to join a chat, send messages, and leave the chat.
5. **Joining a Chat Room**: Implement functionality for users to join a chat room. When a user joins, an event should be published using 'async-event-bus' to notify all other participants about the new member.
6. **Sending Messages**: Allow users to send messages to the chat room. When a message is sent, it should be broadcasted to all participants except the sender through the 'async-event-bus'.
7. **Leaving the Chat Room**: Provide functionality for users to leave the chat room gracefully. Upon leaving, an event should be published to inform all remaining participants.
8. **Real-Time Communication**: Ensure that all operations are handled asynchronously to support real-time communication. Utilize 'async-event-bus' to efficiently manage these asynchronous events.
9. **Error Handling**: Implement robust error handling to manage scenarios such as disconnections or unexpected errors during the communication process.
10. **Testing**: Test the application thoroughly to ensure that all functionalities work as expected, including edge cases like simultaneous join/leave operations and high-frequency messaging.

**Suggested Features**:
- User authentication before joining a chat room.
- Ability to create multiple chat rooms and switch between them.
- Persistent storage of chat history for each room.
- Notification system for new messages even when the application is minimized.

This project aims to showcase the power of 'async-event-bus' in managing real-time events efficiently while providing a practical and engaging use case.