Best Practices using Plugin.FirebasePushNotifications

[sadrirammal]

Hey there,

Yesterday, I successfully implemented the Plugin into my .NET MAUI app (uses XAML, MVVM, CommunityToolkit, .NET 8), and push notifications work. However, I have absolutely no clue if what I did is considered good or even acceptable.

Right now, I just inject NotificationsPermissions and FirebasePush services into my main ViewModel, and then I execute this function:

public async Task CheckPushNotificationPermissionsAsync()
{
    var authStatus = await GetAuthorizationStatusAsync();

    await RequestNotificationPermissionAsync();

    // Ask for permission if not determined
    if (authStatus == AuthorizationStatus.NotDetermined)
    {
        var isAccepted = await RequestNotificationPermissionAsync();

        // Return if permission request is denied
        if (!isAccepted) return;
    }

    // If permission is already denied, return
    if (authStatus == AuthorizationStatus.Denied)
    {
        await UnregisterForPushNotificationsAsync();
        UnsubscribeTopics();
        UnsubscribeEvents();
        return;
    }

    // Subscriptions
    // TODO: Check multiple subscriptions
    await RegisterForPushNotificationsAsync();

    var token = GetFirebasePushNotificationToken();
    // var notificationToken = await GetPushNotificationTokenAsync();
    // if (!string.IsNullOrWhiteSpace(notificationToken)) await StorePushNotificationToken();

    // SubscribeToTopicsAsync();
    SubscribeToEvents();
}

The notifications work. However, I’ve seen different approaches, like using:

CrossNotificationPermissions.Current.RequestPermissionAsync().GetAwaiter().GetResult();
and initializing inside of App.xaml.cs, so I’m not sure what’s really the way to go.

Thanks a lot,
Sadri