Technologies use

MongoDB + ExpressJS + SocketIO + SwiftUI

Server

1. Install docker desktop https://www.docker.com/products/docker-desktop
2. Login Docker
3. docker-compose up -build
4. Check http://localhost:8081 for DB GUI and http://localhost for apis (cannot get )

Fetch code: GET | http://localhost/create_code?username=1

Make payment: GET | http://localhost/make_payment?store_id=1&amount=1234&code=9000013685385798

Client

1. Build with Xcode
2. Enter any username then connect to localhost
3. Refresh to get new bar code
4. Try /make_payment in url to finish current code