ElasticsearchIndexerLanguageCriteriaEvent example

class ElasticsearchIndexerLanguageCriteriaEventTest extends TestCase
{
    public function testEvent(): void
    {
        $criteria = new Criteria();
        $context = Context::createDefaultContext();

        $event = new ElasticsearchIndexerLanguageCriteriaEvent($criteria, $context);
        static::assertSame($criteria, $event->getCriteria());
        static::assertSame($context, $event->getContext());
    }
}

    public function __construct(private readonly EntityRepository $languageRepository, private readonly EventDispatcherInterface $eventDispatcher)
    {
    }

    public function getLanguages(Context $context): LanguageCollection
    {
        $criteria = new Criteria();
        $criteria->addFilter(new NandFilter([new EqualsFilter('salesChannels.id', null)]));
        $criteria->addSorting(new FieldSorting('id'));

        $this->eventDispatcher->dispatch(new ElasticsearchIndexerLanguageCriteriaEvent($criteria, $context));

        /** @var LanguageCollection $languages */
        $languages = $this->languageRepository
            ->search($criteria, $context)
            ->getEntities();

        return $languages;
    }
}