knowledge-8.x-1.x-dev/src/Form/WaveForm.php

<?php

declare(strict_types=1);

namespace Drupal\knowledge\Form;

use Drupal\Component\Datetime\TimeInterface;
use Drupal\Core\Entity\ContentEntityForm;
use Drupal\Core\Entity\EntityRepositoryInterface;
use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\State\StateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Form controller for the wave entity edit forms.
 */
final class WaveForm extends ContentEntityForm {

  /**
   * The state service.
   *
   * @var \Drupal\Core\State\StateInterface
   */
  protected $state;

  /**
   * Constructs a ContentEntityForm object.
   *
   * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
   *   The entity repository service.
   * @param \Drupal\Core\Entity\EntityTypeBundleInfoInterface $entity_type_bundle_info
   *   The entity type bundle service.
   * @param \Drupal\Component\Datetime\TimeInterface $time
   *   The time service.
   * @param \Drupal\Core\State\StateInterface $state
   *   The state service.
   */
  public function __construct(EntityRepositoryInterface $entity_repository, EntityTypeBundleInfoInterface $entity_type_bundle_info, TimeInterface $time, StateInterface $state) {
    parent::__construct($entity_repository, $entity_type_bundle_info, $time);
    $this->state = $state;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('entity.repository'),
      $container->get('entity_type.bundle.info'),
      $container->get('datetime.time'),
      $container->get('state')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state): array {
    $form = parent::buildForm($form, $form_state);

    $form['default'] = [
      '#type' => 'checkbox',
      '#title' => $this->t('Default'),
      '#default_value' => $this->entity->id() == $this->state->get('knowledge.wave_default', 1),
      '#description' => $this->t('Set this wave as the default wave.'),
      '#weight' => 10,
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state): int {
    $result = parent::save($form, $form_state);
    if ($form_state->getValue('default')) {
      $default_wave = $this->state->get('knowledge.wave_default', 1);
      if ($this->entity->id() != $default_wave) {
        $this->state->set('knowledge.wave_default', $this->entity->id());
      }
    }

    $message_args = ['%label' => $this->entity->toLink()->toString()];
    $logger_args = [
      '%label' => $this->entity->label(),
      'link' => $this->entity->toLink($this->t('View'))->toString(),
    ];

    switch ($result) {
      case SAVED_NEW:
        $this->messenger()->addStatus($this->t('New wave %label has been created.', $message_args));
        $this->logger('knowledge')->notice('New wave %label has been created.', $logger_args);
        break;

      case SAVED_UPDATED:
        $this->messenger()->addStatus($this->t('The wave %label has been updated.', $message_args));
        $this->logger('knowledge')->notice('The wave %label has been updated.', $logger_args);
        break;

      default:
        throw new \LogicException('Could not save the entity.');
    }

    $form_state->setRedirectUrl($this->entity->toUrl());

    return $result;
  }

}