The challenge: Build an online messaging service using Flask, similar in spirit to Slack. Users will be able to sign in to the site with a display name, create channels (i.e. chatrooms) to communicate in, as well as see and join existing channels. Once a channel is selected, users will be able to send and receive messages with one another in real-time.

What I did:

• Built this web application using WebSocket in Flask.
• Developed user authentication and chat history using Local storage.
• Built features like creating chat rooms, view, and join existing channels using Flask-SocketIO.
• Implemented features like send and download images using JavaScript.
• Bootstrap was used as the frontend library and Handlebars as a templating language.