api-platform-groups-context-builder.php

<?php

namespace App\Serializer;

use ApiPlatform\Core\Serializer\SerializerContextBuilderInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;

final class GroupsContextBuilder implements SerializerContextBuilderInterface
{
    private $decorated;
    private $authorizationChecker;

    public function __construct(SerializerContextBuilderInterface $decorated, AuthorizationCheckerInterface $authorizationChecker)
    {
        $this->decorated = $decorated;
        $this->authorizationChecker = $authorizationChecker;
    }

    public function createFromRequest(Request $request, bool $normalization, ?array $extractedAttributes = null): array
    {
        $context = $this->decorated->createFromRequest($request, $normalization, $extractedAttributes);
        $resourceClass = $context['resource_class'] ?? null;

        $entityName = (new \ReflectionClass($resourceClass))->getShortName();
        $entitySlug = strtolower(preg_replace('/[A-Z]/', '-\\0', lcfirst($entityName)));
        $operationName = $this->extractOperationName($context);
        $serializeType = true === $normalization ? 'out' : 'in'; // in=input=denormalization, out=output=normalization

        /* Generate entity group "entity:operationName" */
        $context['groups'][] = sprintf('%s:%s', $entitySlug, $operationName);

        /* Generate entity group "entity:operationName:serializeType" */
        $context['groups'][] = sprintf('%s:%s:%s', $entitySlug, $operationName, $serializeType);

        return $context;
    }
  
    private function extractOperationName(array $context): string 
    {
      if (!empty($context['item_operation_name']) {
        return $context['item_operation_name'] === 'get' ? 'get_item' : $context['item_operation_name'];
      }
      if (!empty($context['collection_operation_name']) {
        return $context['collection_operation_name'] === 'get' ? 'get_col' : $context['collection_operation_name'];
      }
      throw new \Exception(get_class() . ' : unsupported request);
    }
}