class EntityUser

class EntityUser extends EntityContentBase {

  /**
   * The password service class.
   *
   * @var \Drupal\Core\Password\PasswordInterface
   */
  protected $password;

  /**
   * Builds a user entity destination.
   *
   * @param array $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin_id for the plugin instance.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\migrate\Plugin\MigrationInterface $migration
   *   The migration.
   * @param \Drupal\Core\Entity\EntityStorageInterface $storage
   *   The storage for this entity type.
   * @param array $bundles
   *   The list of bundles this entity type has.
   * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
   *   The entity field manager.
   * @param \Drupal\Core\Field\FieldTypePluginManagerInterface $field_type_manager
   *   The field type plugin manager service.
   * @param \Drupal\Core\Password\PasswordInterface $password
   *   The password service.
   * @param \Drupal\Core\Session\AccountSwitcherInterface|null $account_switcher
   *   The account switcher service.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, EntityStorageInterface $storage, array $bundles, EntityFieldManagerInterface $entity_field_manager, FieldTypePluginManagerInterface $field_type_manager, PasswordInterface $password, AccountSwitcherInterface $account_switcher = NULL) {
    parent::__construct($configuration, $plugin_id, $plugin_definition, $migration, $storage, $bundles, $entity_field_manager, $field_type_manager, $account_switcher);
    $this->password = $password;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration = NULL) {
    $entity_type = static::getEntityTypeId($plugin_id);
    return new static($configuration, $plugin_id, $plugin_definition, $migration, $container
      ->get('entity_type.manager')
      ->getStorage($entity_type), array_keys($container
      ->get('entity_type.bundle.info')
      ->getBundleInfo($entity_type)), $container
      ->get('entity_field.manager'), $container
      ->get('plugin.manager.field.field_type'), $container
      ->get('password'), $container
      ->get('account_switcher'));
  }

  /**
   * {@inheritdoc}
   * @throws \Drupal\migrate\MigrateException
   */
  public function import(Row $row, array $old_destination_id_values = []) {

    // Do not overwrite the root account password.
    if ($row
      ->getDestinationProperty('uid') == 1) {
      $row
        ->removeDestinationProperty('pass');
    }
    return parent::import($row, $old_destination_id_values);
  }

  /**
   * {@inheritdoc}
   */
  protected function save(ContentEntityInterface $entity, array $old_destination_id_values = []) {

    // Do not overwrite the root account password.
    if ($entity
      ->id() != 1) {

      // Set the pre_hashed password so that the PasswordItem field does not hash
      // already hashed passwords. If the md5_passwords configuration option is
      // set we need to rehash the password and prefix with a U.
      // @see \Drupal\Core\Field\Plugin\Field\FieldType\PasswordItem::preSave()
      $entity->pass->pre_hashed = TRUE;
      if (isset($this->configuration['md5_passwords'])) {
        $entity->pass->value = 'U' . $this->password
          ->hash($entity->pass->value);
      }
    }
    return parent::save($entity, $old_destination_id_values);
  }

  /**
   * {@inheritdoc}
   */
  protected function processStubRow(Row $row) {
    parent::processStubRow($row);
    $field_definitions = $this->entityFieldManager
      ->getFieldDefinitions($this->storage
      ->getEntityTypeId(), $this
      ->getKey('bundle'));

    // Name is generated using a dedicated sample value generator to ensure
    // uniqueness and a valid length.
    // @todo Remove this as part of https://www.drupal.org/node/3352288.
    $name = UserNameItem::generateSampleValue($field_definitions['name']);
    $row
      ->setDestinationProperty('name', reset($name));

    // Email address is not defined as required in the base field definition but
    // is effectively required by the UserMailRequired constraint. This means
    // that Entity::processStubRow() did not populate it - we do it here.
    $mail = EmailItem::generateSampleValue($field_definitions['mail']);
    $row
      ->setDestinationProperty('mail', reset($mail));
  }

  /**
   * {@inheritdoc}
   */
  public function getHighestId() {
    $highest_id = parent::getHighestId();

    // Every Drupal site must have a user with UID of 1 and it's normal for
    // migrations to overwrite this user.
    if ($highest_id === 1) {
      return 0;
    }
    return $highest_id;
  }

}