SuluCMS exclude specified webspaces from sitemap.xml

HideInSitemapListener.php

<?php
declare(strict_types=1);

namespace App\Infra;

use Sulu\Bundle\PageBundle\Document\HomeDocument;
use Sulu\Bundle\PageBundle\Document\PageDocument;
use Sulu\Component\Content\Document\Extension\ExtensionContainer;
use Sulu\Component\DocumentManager\Event\PersistEvent;
use Sulu\Component\DocumentManager\Events;
use Symfony\Component\DependencyInjection\Attribute\AutoconfigureTag;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * For some webspaces, we never want their contents to be shown in the sitemap.xml.
 * This is because these webspaces contain e.g. member only content that is privileged.
 *
 * Here we detect changes to documents inside specific webspaces and then force the
 * "hideInSitemap" setting to be enabled. This means even if a user unsets the setting
 * this listener will simply override it.
 */
#[AutoconfigureTag(name: 'sulu_document_manager.event_subscriber')]
readonly class HideInSitemapListener implements EventSubscriberInterface
{
    private const array PRIVATE_WEBSPACES = [
        'some-private-webspace-key',
        'another-member-only-webspace-key',
    ];

    public static function getSubscribedEvents(): array
    {
        return [
            Events::PERSIST => 'hideInSitemap',
        ];
    }

    public function hideInSitemap(PersistEvent $event): void
    {
        $document = $event->getDocument();

        if (!$document instanceof PageDocument && !$document instanceof HomeDocument)
        {
            return;
        }

        if (in_array($document->getWebspaceName(), self::PRIVATE_WEBSPACES))
        {
            /** @var ExtensionContainer $extensionsData */
            $extensionsData = $document->getExtensionsData();
            /** @var array<string, string> $seoConfig */
            $seoConfig = $extensionsData->offsetGet('seo');
            $seoConfig['hideInSitemap'] = true;

            $document->setExtension('seo', $seoConfig);
        }
    }
}