doesntHave libraries is_public false

app/Observers/LibraryItemObserver.php

@@ -36,13 +36,17 @@ class LibraryItemObserver
                 // http://localhost/de/library/library-item?l=de&table[filters][id]=2
 
                 if ($libraryItem->type !== 'markdown_article') {
+
+                    if ($libraryItem->doesntHave('libraries', fn($query) => $query->where('is_public', false))
+                                    ->exists()) {
                         $text = sprintf("Es gibt was Neues zum Lesen oder Anhören:\n\n%s\n\n%s\n\n#Bitcoin #Wissen #Einundzwanzig #gesundesgeld",
                             $libraryItemName,
                             url()->route('article.view',
                                 ['libraryItem' => $libraryItem->slug]),
                         );
-
                         $this->postTweet($text);
+                    }
+
                 } else {
                     $text = sprintf("Ein neuer News-Artikel wurde verfasst:\n\n%s\n\n%s\n\n#Bitcoin #News #Einundzwanzig #gesundesgeld",
                         $libraryItemName,