ResourceTypeConverter.php

<?php

namespace Drupal\jsonapi\ParamConverter;

use Drupal\Core\ParamConverter\ParamConverterInterface;
use Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface;
use Symfony\Component\Routing\Route;

/**
 * Parameter converter for upcasting JSON:API resource type names to objects.
 *
 * @internal JSON:API maintains no PHP API since its API is the HTTP API. This
 *   class may change at any time and this will break any dependencies on it.
 *
 * @see https://www.drupal.org/project/drupal/issues/3032787
 * @see jsonapi.api.php
 */
class ResourceTypeConverter implements ParamConverterInterface {
    
    /**
     * The route parameter type to match.
     *
     * @var string
     */
    const PARAM_TYPE_ID = 'jsonapi_resource_type';
    
    /**
     * The JSON:API resource type repository.
     *
     * @var \Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface
     */
    protected $resourceTypeRepository;
    
    /**
     * ResourceTypeConverter constructor.
     *
     * @param \Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface $resource_type_repository
     *   The JSON:API resource type repository.
     */
    public function __construct(ResourceTypeRepositoryInterface $resource_type_repository) {
        $this->resourceTypeRepository = $resource_type_repository;
    }
    
    /**
     * {@inheritdoc}
     */
    public function convert($value, $definition, $name, array $defaults) {
        return $this->resourceTypeRepository
            ->getByTypeName($value);
    }
    
    /**
     * {@inheritdoc}
     */
    public function applies($definition, $name, Route $route) {
        return !empty($definition['type']) && $definition['type'] === static::PARAM_TYPE_ID;
    }

}