private function getFilePath(File $file)
 {
     $storagePath = __DIR__ . '/../../files/' . date('Y/m/d', strtotime($file->getCreatedAt()));
     if (!is_dir($storagePath)) {
         mkdir($storagePath, 0777, true);
     }
     return $storagePath . '/' . $file->getId();
 }
 public function delete(File $file)
 {
     $statement = $this->pdo->prepare("DELETE FROM file WHERE id=:id");
     $statement->execute(['id' => $file->getId()]);
 }