The web is a PWA, so after installing it on a phone (Add to Home Screen) it supports push notifications.
When the app is loaded, it sends a request to 192.168.0.100 to check whether the Control unit is available.
If the API responds, the app shows the current state of the washing process and also a button for subscribing to push notifications.
The app registers a service worker that is processing the incoming notifications.
Once the washing is done, the Control unit sends a push notification and the phone displays it.
The app is deployed to laundry.iot.jozefcipa.com and is hosted on Vercel.
