UHF-8946: redirect to existing job listing translation

public/modules/custom/helfi_rekry_content/helfi_rekry_content.services.yml

@@ -15,7 +15,7 @@ services:
       - { name: 'event_subscriber' }
   helfi_rekry_content.job_listing_redirect_subscriber:
     class: Drupal\helfi_rekry_content\EventSubscriber\JobListingRedirectSubscriber
-    arguments: ['@config.factory', '@current_user']
+    arguments: ['@config.factory', '@current_user', '@entity_type.manager']
     tags:
       - { name: 'event_subscriber' }
   logger.channel.helfi_rekry_content:

public/modules/custom/helfi_rekry_content/src/EventSubscriber/JobListingRedirectSubscriber.php

@@ -5,15 +5,16 @@
 namespace Drupal\helfi_rekry_content\EventSubscriber;
 
 use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Entity\EntityTypeManager;
 use Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase;
+use Drupal\Core\Routing\TrustedRedirectResponse;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\Url;
 use Drupal\node\NodeInterface;
-use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpKernel\Event\ExceptionEvent;
 
 /**
- * Redirect job listing 403s for anonymous users.
+ * Http exception event subscribers for job listings.
  */
 class JobListingRedirectSubscriber extends HttpExceptionSubscriberBase {
 
@@ -24,10 +25,13 @@ class JobListingRedirectSubscriber extends HttpExceptionSubscriberBase {
    *   The configuration factory.
    * @param \Drupal\Core\Session\AccountInterface $currentUser
    *   The current user.
+   * @param \Drupal\Core\Entity\EntityTypeManager $entityTypeManager
+   *   The entity type manager.
    */
   public function __construct(
     protected ConfigFactoryInterface $configFactory,
-    protected AccountInterface $currentUser
+    protected AccountInterface $currentUser,
+    protected EntityTypeManager $entityTypeManager,
   ) {}
 
   /**
@@ -66,7 +70,52 @@ public function on403(ExceptionEvent $event): void {
     $url = Url::fromRoute('entity.node.canonical', ['node' => $redirectNode])->toString();
 
     // Set temporary redirect.
-    $response = new RedirectResponse($url, 307);
+    $response = new TrustedRedirectResponse($url, 307);
+    $event->setResponse($response);
+  }
+
+  /**
+   * The 404 exception listener.
+   *
+   * #UHF-8946 External service's automation is only capable of creating links to
+   * finnish job listings. If finnish translation doesn't exist the user will be
+   * automatically redirected to existing translation with matching job ID.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\ExceptionEvent $event
+   *   The Event to process.
+   */
+  public function on404(ExceptionEvent $event) : void {
+    $uri = $event->getRequest()->getRequestUri();
+    $redirectPaths = [
+      'fi' => 'avoimet-tyopaikat/avoimet-tyopaikat/',
+      'sv' => 'lediga-jobb/lediga-jobb/',
+      'en' => 'open-jobs/open-jobs/',
+    ];
+
+    $redirectFrom = NULL;
+    foreach ($redirectPaths as $path) {
+      if (str_contains($uri, $path)) {
+        $redirectFrom = $path;
+        break;
+      }
+    }
+
+    if (!$redirectFrom) {
+      return;
+    }
+
+    $recruitmentId = array_reverse(explode('/', $uri))[0];
+    $nodes = $this->entityTypeManager
+      ->getStorage('node')
+      ->loadByProperties(['field_recruitment_id' => $recruitmentId]);
+
+    if (!$nodes || !$node = reset($nodes)) {
+      return;
+    }
+
+    $url = $node->toUrl('canonical', ['language' => $node->language()])->toString();
+    $response = new TrustedRedirectResponse($url);
+    $response->addCacheableDependency($url);
     $event->setResponse($response);
   }