component_library-1.0.x-dev/src/EventSubscriber/EntityYamlPlaceholders.php

<?php

declare(strict_types=1);

namespace Drupal\component_library\EventSubscriber;

use Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
use Drupal\component_library\Event\ConvertYamlPlaceholdersEvent;
use Drupal\Core\Entity\EntityStorageException;
use Drupal\Core\Logger\LoggerChannelInterface;
use Drupal\Core\Utility\Error;
use Drupal\layout_builder\Entity\SampleEntityGeneratorInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

final class EntityYamlPlaceholders implements EventSubscriberInterface {

  private SampleEntityGeneratorInterface $generator;
  private LoggerChannelInterface $logger;

  public static function getSubscribedEvents(): array {
    return [
      ConvertYamlPlaceholdersEvent::class => ['onConvertYamlPlaceholders', 100],
    ];
  }

  public function __construct(SampleEntityGeneratorInterface $generator, LoggerChannelInterface $logger) {
    $this->generator = $generator;
    $this->logger = $logger;
  }

  public function onConvertYamlPlaceholders(ConvertYamlPlaceholdersEvent $event): void {
    foreach ($event->getContext() as $key => $value) {
      if (\is_string($value) && \str_starts_with($value, 'content_entity:')) {
        $values = \explode(':', $value);
        if (\count($values) !== 3) {
          // This isn't an entity, so don't set the context item.
          continue;
        }
        [, $entity_type, $bundle] = $values;
        try {
          $sample_entity = $this->generator->get($entity_type, $bundle);
          $event->setContextItem($key, $sample_entity);
        }
        catch (\InvalidArgumentException | PluginNotFoundException | InvalidPluginDefinitionException | EntityStorageException $exception) {
          $this->logException($exception);
        }
      }
    }
  }

  private function logException(\Exception $exception): void {
    $message = '%type: @message in %function (line %line of %file).';
    $variables = Error::decodeException($exception);
    $this->logger->error($message, $variables);
  }

}