Add short description to library update notification

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt

@@ -380,7 +380,6 @@ class LibraryUpdateService(
      * @param updates a list of manga with new updates.
      */
     private fun showResultNotification(updates: List<Manga>) {
-        val title = getString(R.string.notification_new_chapters)
         val newUpdates = updates.map { it.title.chop(45) }.toMutableSet()
 
         // Append new chapters from a previous, existing notification
@@ -398,10 +397,14 @@ class LibraryUpdateService(
             }
         }
 
+        val title = getString(R.string.notification_new_chapters)
+        val text = getString(R.string.notification_new_chapters_text, newUpdates.size)
+
         notificationManager.notify(Constants.NOTIFICATION_LIBRARY_RESULT_ID, notification {
             setSmallIcon(R.drawable.ic_book_white_24dp)
             setLargeIcon(notificationBitmap)
             setContentTitle(title)
+            setContentText(text)
             setStyle(NotificationCompat.BigTextStyle().bigText(newUpdates.joinToString("\n")))
             setContentIntent(getNotificationIntent())
             setAutoCancel(true)

app/src/main/res/values/strings.xml

@@ -340,6 +340,7 @@
     <!-- Library update service notifications -->
     <string name="notification_update_progress">Update progress: %1$d/%2$d</string>
     <string name="notification_new_chapters">New chapters found</string>
+    <string name="notification_new_chapters_text">For %1$d titles</string>
     <string name="notification_cover_update_failed">Failed to update cover</string>
     <string name="notification_first_add_to_library">Please add the manga to your library before doing this</string>
     <string name="notification_not_connected_to_ac_title">Sync canceled</string>