handle notification preferences

I have the event NewCommentWasAddedToPost

And this listener NotifyMentionedUsers

A user has the following notifications preferences

$user->preferences()->comment_on_my_post = ['database']

For example, when user B adds a comment to user A's post, then A will receive a database notification )

$user->preferences()->comment_on_participated_post = ['database']

For example, when user A adds a comment on B's post, and C also comments on the same post, then user A will receive a database notification

$user->preferences()->mentioned_in_comment = ['database']

When the name of A is mentioned on a comment, then A will receive a database notification.

As you understand, there are cases that a user receives two notifications for the same comment.

For example, if A creates a post, and B comments on that post and also mention A's name

Then A will receive a notification because

1. another user commented on the post
2. the name was mentioned in the comment

Whereas, I want to do something like

class NotifyMentionedUsers
{
      public function handle(NewCommentWasAddedToPost $event)
      {
       $mentionedUsers = User::query()
                        ->whereIn('id', $event->comment->mentionedUsers())
                       ->where('id', '!=', $event->comment->owner->id)
                       ->get();
         $mentionedUsers->each(function($user) use($event) {
                      $user->notify(new YouHaveBeenMentionedInAComment($comment));
           });
       }
}

class YouHaveBeenMentionedInAComment
{
            public function __construct(public $comment){}

            public function handle($notifiable)
            {
             $postParticipantIds = $event->comment
                                      ->post->comments()
                                      ->pluck('user_id');
             $preferences = $notifable->preferences();

              if($notifiable->is($comment->post->owner))
               {

                  // therefore, if the post owner has enabled database notifications when a another user comments on the post, then the post owner will not receive database notification because was mentioned in that comment
                              
                    return array_diff(
                             $preferences()->mentioned_in_comment,
                              $preferences->comment_on_my_post
                       );
                   // if the notifiable has chosen to receive notifications when another user comments on the same post, then the notifiable will not receive notification because was mentioned in the comment
               }elseif ($postParticipantIds->contains($notifiable->id))
                 {
                      return array_diff(
                                 $preferences()->mentioned_in_comment,
                                  $preferences->comment_on_participated_post
                               );  
                  }else{
                      return $notifiable->mentioned_in_comment;              
             }
}

P.S new channels might be added, and in my mind it makes more sense this logic to be handled in the via method in the notification.

Is there a better way to approach this ? or I should at least extract a class and put all the conditions in so

public function via($notifiable)
{
        return  CommentNotifications->getChannels($notifiable, $event);
}