recurring_events-2.0.x-dev/modules/recurring_events_registration/src/Plugin/views/field/EventInstanceCapacity.php

<?php

declare(strict_types=1);

namespace Drupal\recurring_events_registration\Plugin\views\field;

use Drupal\recurring_events_registration\RegistrationCreationService;
use Drupal\views\Attribute\ViewsField;
use Drupal\views\Plugin\views\field\FieldPluginBase;
use Drupal\views\ResultRow;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Field handler to show the availability of registrations for event instances.
 *
 * @ingroup views_field_handlers
 */
#[ViewsField(
  id: "eventinstance_capacity",
)]
class EventInstanceCapacity extends FieldPluginBase {

  public function __construct(
    array $configuration,
    $plugin_id,
    $plugin_definition,
    protected readonly RegistrationCreationService $registrationCreationService,
  ) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static(
      $configuration,
      $plugin_id,
      $plugin_definition,
      $container->get('recurring_events_registration.creation_service')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function query() {
    // Leave empty to avoid a query on this field.
  }

  /**
   * {@inheritdoc}
   */
  public function render(ResultRow $values) {
    $event = $values->_entity;
    $this->registrationCreationService->setEventInstance($event);
    $capacity = (int) $this->registrationCreationService->getEventSeries()->event_registration->capacity;
    if ($capacity === -1) {
      $capacity = $this->t('Unlimited');
    }
    return $capacity;
  }

}