How to implement a simple text menu in console?

Hi,

I am using a RAK8212 and want to implement a simple interactive text menu.
I am connected via BLE.

The text menu could look like this:

Please enter you choice:

1 Do this
2 Do that

You choice>

Bluetooth.read(1) returns immediately.
Bluetooth.on('data', function() {...}) also doesn't work, as the application has no such a thing as a event loop that runs all the time.

Any ideas how to create a interactive text menu in the console?