Composer and push notifications when application on foreground

Hi

So I am receiving push notifications in my application. As expected when the application is the foreground the native notifications do not show. But I have to inform my user that there has been a notification, so I am trying to create my own notifications.

Since I am using scenes and I have the notification listener in the main.lua. I was wondering how to display something in the current scene I am running.

The user is in scene1, the main.lua listens to the remote push notifications and then  it should show my “app” notification. 

Should the notification listener be per-scene?

Should the “app” notification images and code be in main.lua or declared also per scene ?

Thanks

Regards

Sebastian Galiano