Firebase messaging location request

Hey I’m new to android development, my teachers asked us to use fire base messaging and I have Firebase set up in my app I need help with the following:

How do I send a location request to a server and once the request is received how, do I get the app to display two buttons (positive and negative) that do individual tasks specific to them?

The url for the web service is at the following address:
cpsc470amobiledevelopment.appspot.com/messaging