LoginCommand.php

<?php

declare (strict_types=1);
namespace Drupal\user\Command;

use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\user\OneTimeAuthentication;
use Symfony\Component\Console\Attribute\Argument;
use Symfony\Component\Console\Attribute\AsCommand;
use Symfony\Component\Console\Attribute\Option;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Generate a one-time login link.
 *
 * @internal
 */
class LoginCommand {
  use StringTranslationTrait;
  public function __construct(protected readonly EntityTypeManagerInterface $entityTypeManager, protected readonly OneTimeAuthentication $oneTimeAuthentication) {
  }
  
  /**
   * Generate a one-time login link.
   */
  public function __invoke(OutputInterface $output, #[Argument('Optional path to redirect to after logging in.')] ?string $path, #[Option('A user name to log in as.')] ?string $name = NULL, #[Option('A user ID to log in as.')] ?string $uid = NULL, #[Option('A user email to log in as.')] ?string $mail = NULL) : int {
    $account = NULL;
    $storage = $this->entityTypeManager
      ->getStorage('user');
    $candidates = [
      'name' => $name,
      'uid' => $uid,
      'mail' => $mail,
    ];
    foreach ($candidates as $property => $value) {
      if ($value) {
        if (!$account = $storage->loadByProperties([
          $property => $value,
        ])) {
          throw new \InvalidArgumentException(sprintf('Unable to load user by %s: %s', $property, $value));
        }
        $account = reset($account);
        break;

      }
    }
    if (empty($account)) {
      $account = $storage->load(1);
    }
    if ($account->isBlocked()) {
      throw new \InvalidArgumentException(sprintf('Account %s is blocked and thus cannot login.', $account->getAccountName()));
    }
    $options = [
      'query' => $path ? [
        'destination' => $path,
      ] : [],
    ];
    $url = $this->oneTimeAuthentication
      ->generateOneTimeLoginUrl($account, $options, immediate: TRUE)
      ->mergeOptions($options);
    $output->writeln($url->toString());
    return Command::SUCCESS;
  }

}