Can delete notifications related to a friendship request

src/helpers/NotificationsHelper.ts

@@ -197,6 +197,22 @@ export class NotificationsHelper {
 		)
 	}
 
+	/**
+	 * Delete notifications
+	 * 
+	 * @param n Notification
+	 */
+	public static async Delete(n: Notif) {
+		// Delete a specific notification
+		if(n.hasId)
+			throw new Error("Please implement notification deletion with known ID!");
+		
+		// Delete wider range of notifications
+		else
+			await DatabaseHelper.DeleteRows(NOTIFICATIONS_TABLE, this.NotifToDB(n, false))
+		
+	}
+
 	/**
 	 * Count the number of unread notifications of a user
 	 *