class Route

class Route extends ProcessPluginBase implements ContainerFactoryPluginInterface {
  
  /**
   * The current migration.
   */
  protected MigrationInterface $migration;
  
  /**
   * The path validator service.
   *
   * @var \Drupal\Core\Path\PathValidatorInterface
   */
  protected $pathValidator;
  
  /**
   * {@inheritdoc}
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, PathValidatorInterface $path_validator) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->migration = $migration;
    $this->pathValidator = $path_validator;
  }
  
  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition, ?MigrationInterface $migration = NULL) {
    return new static($configuration, $plugin_id, $plugin_definition, $migration, $container->get('path.validator'));
  }
  
  /**
   * {@inheritdoc}
   *
   * Set the destination route information based on the source link_path.
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    if (is_string($value)) {
      $link_path = $value;
      $options = [];
    }
    else {
      [
        $link_path,
        $options,
      ] = $value;
    }
    $extracted = $this->pathValidator
      ->getUrlIfValidWithoutAccessCheck($link_path);
    $route = [];
    if ($extracted) {
      if ($extracted->isExternal()) {
        $route['route_name'] = NULL;
        $route['route_parameters'] = [];
        $route['options'] = $options;
        $route['url'] = $extracted->getUri();
      }
      else {
        $route['route_name'] = $extracted->getRouteName();
        $route['route_parameters'] = $extracted->getRouteParameters();
        $route['options'] = $extracted->getOptions();
        if (isset($options['query'])) {
          // If the querystring is stored as a string (as in D6), convert it
          // into an array.
          if (is_string($options['query'])) {
            parse_str($options['query'], $old_query);
          }
          else {
            $old_query = $options['query'];
          }
          $options['query'] = $route['options']['query'] + $old_query;
          unset($route['options']['query']);
        }
        $route['options'] = $route['options'] + $options;
        $route['url'] = NULL;
      }
    }
    return $route;
  }

}