activitypub-1.0.x-dev/src/EventSubscriber/ActivitypubRouteSubscriber.php

<?php

namespace Drupal\activitypub\EventSubscriber;

use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\Language\Language;
use Drupal\Core\Routing\RouteSubscriberBase;
use Drupal\Core\Routing\RoutingEvents;
use Symfony\Component\Routing\RouteCollection;

/**
 * Route subscriber.
 */
class ActivitypubRouteSubscriber extends RouteSubscriberBase {

  /**
   * The language manager.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $languageManager;

  /**
   * Constructs an ActivitypubRouteSubscriber object.
   *
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   *   The language manager.
   */
  public function __construct(LanguageManagerInterface $language_manager) {
    $this->languageManager = $language_manager;
  }

  /**
   * {@inheritdoc}
   */
  protected function alterRoutes(RouteCollection $collection) {
    $undefined_lang = $this->languageManager->getLanguage(Language::LANGCODE_NOT_SPECIFIED);

    // All activitypub endpoints that needs to be canonical
    $activitypub_endpoints = [
      'entity.activitypub_activity.canonical',
      'activitypub.user.self',
      'activitypub.user.self.json',
      'activitypub.node.json',
      'activitypub.comment.json',
      'activitypub.inbox',
      'activitypub.outbox',
      'activitypub.followers',
      'activitypub.following',
    ];
    // Set them all as undefined lang to not alter the path 
    // by language in any way.

    foreach ($activitypub_endpoints as $endpoint) {
      if ($route = $collection->get($endpoint)) {
        $route->setOption('default_url_options', [
          'language' => $undefined_lang
        ]);
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents(): array {
    // Use a lower priority than \Drupal\views\EventSubscriber\RouteSubscriber
    // to ensure the requirement will be added to its routes.
    $events[RoutingEvents::ALTER] = ['onAlterRoutes', -300];

    return $events;
  }

}