CalendarRestResource

<?php

namespace Drupal\storleden_search\Plugin\rest\resource;

use Drupal\Core\Entity\EntityTypeManager;
use Drupal\Core\Session\AccountProxyInterface;
use Drupal\rest\Plugin\ResourceBase;
use Drupal\rest\ResourceResponse;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
use Psr\Log\LoggerInterface;
use Drupal\storleden_search\CalendarQueryBuilder;

/**
 * Provides a resource to get view modes by entity and bundle.
 *
 * @RestResource(
 *   id = "storleden_search_calendar_rest",
 *   label = @Translation("Storleden Search - Calendar REST"),
 *   uri_paths = {
 *     "canonical" = "/evenemang"
 *   }
 * )
 */
class CalendarRestResource extends ResourceBase {

  /**
   * A current user instance.
   *
   * @var \Drupal\Core\Session\AccountProxyInterface
   */
  protected $currentUser;

  /**
   * @var \Drupal\storleden_search\CalendarQueryBuilder;
   */
  protected $calendarQuery;

  /**
   * @var \Drupal\Core\Entity\EntityManagerInterface;
   */
  protected $entityTypeManager;

  /**
   * Constructs a Drupal\rest\Plugin\ResourceBase object.
   *
   * @param array $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin_id for the plugin instance.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param array $serializer_formats
   *   The available serialization formats.
   * @param \Psr\Log\LoggerInterface $logger
   *   A logger instance.
   * @param \Drupal\Core\Session\AccountProxyInterface $current_user
   *   A current user instance.
   * @param \Drupal\storleden_search\CalendarQueryBuilder $calendar_query
   *   Storleden Search Query builder.
   * @param \Drupal\Core\Entity\EntityTypeManager $entity_type_manager
   *   EntityTypeManager.
   */
  public function __construct(
    array $configuration,
    $plugin_id,
    $plugin_definition,
    array $serializer_formats,
    LoggerInterface $logger,
    AccountProxyInterface $current_user,
    CalendarQueryBuilder $calendar_query,
    EntityTypeManager $entity_type_manager) {
    parent::__construct($configuration, $plugin_id, $plugin_definition, $serializer_formats, $logger);

    $this->currentUser = $current_user;
    $this->calendarQuery = $calendar_query;
    $this->entityTypeManager = $entity_type_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static(
      $configuration,
      $plugin_id,
      $plugin_definition,
      $container->getParameter('serializer.formats'),
      $container->get('logger.factory')->get('storleden_search'),
      $container->get('current_user'),
      $container->get('storleden_search.calendar_query'),
      $container->get('entity_type.manager')
    );
  }

  /**
   * Responds to GET requests.
   *
   * Returns a list of bundles for specified entity.
   *
   * @throws \Symfony\Component\HttpKernel\Exception\HttpException
   *   Throws exception expected.
   */
  public function get() {

    // You must to implement the logic of your REST Resource here.
    // Use current user after pass authentication to validate access.
    if (!$this->currentUser->hasPermission('access content')) {
      throw new AccessDeniedHttpException();
    }

    $items = $this->calendarQuery->getItems();

    $results = array();
    foreach ($items as $item) {

      list(, $path, $langcode) = explode(':', $item->getId());
      list($entity_type, $id) = explode('/', $path);

      // Get the entity.
      $entity = $this->entityTypeManager()->getStorage($entity_type)->load($id);

      // Render as view modes.
      // $key = 'entity:' . $entity_type . '_' . $entity->bundle();
      // $view_mode_configuration = array('teaser');
      // $view_mode = isset($view_mode_configuration[$key]) ? $view_mode_configuration[$key] : 'default';

      $view_mode =  'teaser_3_column';
      $results[] = $this->entityTypeManager()->getViewBuilder($entity_type)->view($entity, $view_mode);
    }

    return new ResourceResponse($results, 200);
  }

  /**
   * {@inheritdoc}
   */
  protected function getBaseRoute($canonical_path, $method) {
    $route = parent::getBaseRoute($canonical_path, $method);

    $parameters = $route->getOption('parameters') ?: [];
    $route->setOption('parameters', $parameters);

    return $route;
  }

}