improvements-2.x-dev/modules/improvements_contact/src/Plugin/Block/ContactFormBlock.php

<?php

namespace Drupal\improvements_contact\Plugin\Block;

use Drupal\contact\Entity\ContactForm;
use Drupal\Core\Block\BlockBase;
use Drupal\Core\Entity\EntityFormBuilderInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * @Block(
 *   id = "contact_form_block",
 *   admin_label = @Translation("Contact form"),
 *   category = @Translation("Forms"),
 * )
 */
class ContactFormBlock extends BlockBase implements ContainerFactoryPluginInterface {

  protected EntityTypeManagerInterface $entityTypeManager;

  protected EntityFormBuilderInterface $entityFormBuilder;

  /**
   * Plugin constructor.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager, EntityFormBuilderInterface $entity_form_builder) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->entityTypeManager = $entity_type_manager;
    $this->entityFormBuilder = $entity_form_builder;
  }

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

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    return [
      'contact_form_id' => '',
    ];
  }

  /**
   * {@inheritDoc}
   */
  public function blockForm($form, FormStateInterface $form_state): array {
    $options = [];
    foreach (ContactForm::loadMultiple() as $contact_form_id => $contact_form) {
      $options[$contact_form_id] = $contact_form->label();
    }

    $form['contact_form_id'] = [
      '#type' => 'select',
      '#title' => $this->t('Contact form'),
      '#options' => $options,
      '#required' => TRUE,
      '#default_value' => $this->configuration['contact_form_id'],
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function blockSubmit($form, FormStateInterface $form_state): void {
    $this->configuration['contact_form_id'] = $form_state->getValue('contact_form_id');
  }

  /**
   * {@inheritDoc}
   */
  public function build(): array {
    $form = [];

    if ($this->configuration['contact_form_id']) {
      $contact_message = $this->entityTypeManager->getStorage('contact_message')->create([
        'contact_form' => $this->configuration['contact_form_id'],
      ]);
      $form = $this->entityFormBuilder->getForm($contact_message);
      $form['#cache']['contexts'][] = 'user.permissions';
    }

    return [
      'content' => $form,
    ];
  }

}