Chris@18: <?php
Chris@18: 
Chris@18: namespace Drupal\jsonapi\Controller;
Chris@18: 
Chris@18: use Drupal\Core\Cache\CacheableMetadata;
Chris@18: use Drupal\Core\Controller\ControllerBase;
Chris@18: use Drupal\Core\Session\AccountInterface;
Chris@18: use Drupal\Core\Url;
Chris@18: use Drupal\jsonapi\JsonApiResource\JsonApiDocumentTopLevel;
Chris@18: use Drupal\jsonapi\JsonApiResource\LinkCollection;
Chris@18: use Drupal\jsonapi\JsonApiResource\NullIncludedData;
Chris@18: use Drupal\jsonapi\JsonApiResource\Link;
Chris@18: use Drupal\jsonapi\JsonApiResource\ResourceObjectData;
Chris@18: use Drupal\jsonapi\ResourceResponse;
Chris@18: use Drupal\jsonapi\ResourceType\ResourceType;
Chris@18: use Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface;
Chris@18: use Drupal\user\Entity\User;
Chris@18: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@18: use Symfony\Component\Routing\Exception\RouteNotFoundException;
Chris@18: 
Chris@18: /**
Chris@18:  * Controller for the API entry point.
Chris@18:  *
Chris@18:  * @internal JSON:API maintains no PHP API. The API is the HTTP API. This class
Chris@18:  *   may change at any time and could break any dependencies on it.
Chris@18:  *
Chris@18:  * @see https://www.drupal.org/project/jsonapi/issues/3032787
Chris@18:  * @see jsonapi.api.php
Chris@18:  */
Chris@18: class EntryPoint extends ControllerBase {
Chris@18: 
Chris@18:   /**
Chris@18:    * The JSON:API resource type repository.
Chris@18:    *
Chris@18:    * @var \Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface
Chris@18:    */
Chris@18:   protected $resourceTypeRepository;
Chris@18: 
Chris@18:   /**
Chris@18:    * The account object.
Chris@18:    *
Chris@18:    * @var \Drupal\Core\Session\AccountInterface
Chris@18:    */
Chris@18:   protected $user;
Chris@18: 
Chris@18:   /**
Chris@18:    * EntryPoint constructor.
Chris@18:    *
Chris@18:    * @param \Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface $resource_type_repository
Chris@18:    *   The resource type repository.
Chris@18:    * @param \Drupal\Core\Session\AccountInterface $user
Chris@18:    *   The current user.
Chris@18:    */
Chris@18:   public function __construct(ResourceTypeRepositoryInterface $resource_type_repository, AccountInterface $user) {
Chris@18:     $this->resourceTypeRepository = $resource_type_repository;
Chris@18:     $this->user = $user;
Chris@18:   }
Chris@18: 
Chris@18:   /**
Chris@18:    * {@inheritdoc}
Chris@18:    */
Chris@18:   public static function create(ContainerInterface $container) {
Chris@18:     return new static(
Chris@18:       $container->get('jsonapi.resource_type.repository'),
Chris@18:       $container->get('current_user')
Chris@18:     );
Chris@18:   }
Chris@18: 
Chris@18:   /**
Chris@18:    * Controller to list all the resources.
Chris@18:    *
Chris@18:    * @return \Drupal\jsonapi\ResourceResponse
Chris@18:    *   The response object.
Chris@18:    */
Chris@18:   public function index() {
Chris@18:     $cacheability = (new CacheableMetadata())
Chris@18:       ->addCacheContexts(['user.roles:authenticated'])
Chris@18:       ->addCacheTags(['jsonapi_resource_types']);
Chris@18: 
Chris@18:     // Only build URLs for exposed resources.
Chris@18:     $resources = array_filter($this->resourceTypeRepository->all(), function ($resource) {
Chris@18:       return !$resource->isInternal();
Chris@18:     });
Chris@18: 
Chris@18:     $self_link = new Link(new CacheableMetadata(), Url::fromRoute('jsonapi.resource_list'), ['self']);
Chris@18:     $urls = array_reduce($resources, function (LinkCollection $carry, ResourceType $resource_type) {
Chris@18:       if ($resource_type->isLocatable() || $resource_type->isMutable()) {
Chris@18:         $route_suffix = $resource_type->isLocatable() ? 'collection' : 'collection.post';
Chris@18:         $url = Url::fromRoute(sprintf('jsonapi.%s.%s', $resource_type->getTypeName(), $route_suffix))->setAbsolute();
Chris@18:         // @todo: implement an extension relation type to signal that this is a primary collection resource.
Chris@18:         $link_relation_types = [];
Chris@18:         return $carry->withLink($resource_type->getTypeName(), new Link(new CacheableMetadata(), $url, $link_relation_types));
Chris@18:       }
Chris@18:       return $carry;
Chris@18:     }, new LinkCollection(['self' => $self_link]));
Chris@18: 
Chris@18:     $meta = [];
Chris@18:     if ($this->user->isAuthenticated()) {
Chris@18:       $current_user_uuid = User::load($this->user->id())->uuid();
Chris@18:       $meta['links']['me'] = ['meta' => ['id' => $current_user_uuid]];
Chris@18:       $cacheability->addCacheContexts(['user']);
Chris@18:       try {
Chris@18:         $me_url = Url::fromRoute(
Chris@18:           'jsonapi.user--user.individual',
Chris@18:           ['entity' => $current_user_uuid]
Chris@18:         )
Chris@18:           ->setAbsolute()
Chris@18:           ->toString(TRUE);
Chris@18:         $meta['links']['me']['href'] = $me_url->getGeneratedUrl();
Chris@18:         // The cacheability of the `me` URL is the cacheability of that URL
Chris@18:         // itself and the currently authenticated user.
Chris@18:         $cacheability = $cacheability->merge($me_url);
Chris@18:       }
Chris@18:       catch (RouteNotFoundException $e) {
Chris@18:         // Do not add the link if the route is disabled or marked as internal.
Chris@18:       }
Chris@18:     }
Chris@18: 
Chris@18:     $response = new ResourceResponse(new JsonApiDocumentTopLevel(new ResourceObjectData([]), new NullIncludedData(), $urls, $meta));
Chris@18:     return $response->addCacheableDependency($cacheability);
Chris@18:   }
Chris@18: 
Chris@18: }