Demo chat application

The original concept was to try and make two separate docker images that cna hook into a generic database image to store the chatlog.

Simple application should be able to be put together with a lightweight app structure so chose Svelte as it is fast and simple while having a lot of the modern power of frameworks

GraphQL is a very powerful server layer that has a lot of built-in cascading resoltion of data (eg users in messages) and inbuild support for realtime subscriptions through subscriptions, so seemed like a nice fit.

Things that got done:

• ✔ GraphQL with in memory storage for chat logs and users
• ✔ Svelte app that lets you log in as a new user and post messages
• ✔ Subscriptions with web sockets for realtime updates
• ✔ Scroll on message
• ✔ Testing for svelte
• ✔ External database for storage

Things that did not get done:

• ❌ Testing for graphql
• ❌ Dockerisation
• ❌ DataLoaders for database connection
• ❌ Error handling in app

Just get it running already!

To get the database up and running use docker-compose -f docker.yml up.

Each section (server and client) should run yarn build to build the distribution version and yarn start to serve it.

Currently GraphQL is hosted on http://localhost:3000 and the application is on http://localhost:5000.

Obviously the db needs to be running for the server and both need to be running or the client will complain.

What about a dev build?

For dev work there is yarn dev in both that should start it up with a local watch for changes.