[question]: Handling data (with content_available=true) notifications

[max-baykalov]

How can we help?

We use OneSignal to handle notifications on Expo project. I faced an problem on version of react-native-onesignal: 5.2.5.

Code to catch notification in Expo app:

import { LogLevel, NotificationWillDisplayEvent, OneSignal } from 'react-native-onesignal';

...

const eventListener = (event: NotificationWillDisplayEvent) => {
    console.log(event);

    event.getNotification().display();
  };

  useEffect(() => {
    OneSignal.initialize(Constants?.expoConfig?.extra?.oneSignalAppId);
    OneSignal.Debug.setLogLevel(LogLevel.Verbose);
    OneSignal.Notifications.requestPermission(true);
    OneSignal.Notifications.addEventListener('foregroundWillDisplay', eventListener);

    return () => OneSignal.Notifications.removeEventListener('foregroundWillDisplay', eventListener);
  }, []);

The console.log in the eventListener method is triggered in case of data only notification. It works only when contents field is set. I assume this is correct behaviour because foregroundWillDisplay event must not be triggered when notification should not be displayed.

I need to handle data notifications when the expo app is in the foreground mode to refetch user's data. I send the following notification from the server:

Notification data

Notification {
  app_id: 'APP_ID',
  include_aliases: { external_id: [ 'USER_ID' ] },
  target_channel: 'push',
  data: { foo: 'bar' },
  content_available: true
}

Is there any way to intercept data notifications in JS code?

Thanks for any help.

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