content_planner-8.x-1.x-dev/modules/content_calendar/src/Plugin/DashboardBlock/RecentCalendarPublicationsBlock.php

<?php

namespace Drupal\content_calendar\Plugin\DashboardBlock;

use Drupal\content_planner\DashboardBlockBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\Request;

/**
 * Provides a block with recent calendar publications.
 *
 * For Content Planner Dashboard.
 *
 * @DashboardBlock(
 *   id = "recent_calendar_content_block",
 *   name = @Translation("Recent Calendar Publications Widget")
 * )
 */
class RecentCalendarPublicationsBlock extends DashboardBlockBase {

  use StringTranslationTrait;

  /**
   * The content service.
   *
   * @var \Drupal\content_calendar\ContentService
   */
  protected $contentService;

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {

    $instance = parent::create($container, $configuration, $plugin_id, $plugin_definition);
    $instance->contentService = $container->get('content_calendar.content_service');

    return $instance;
  }

  /**
   * {@inheritdoc}
   */
  public function build() {

    $config = $this->getConfiguration();

    // Last publications.
    $last_publications_limit_config = $this->getCustomConfigByKey($config, 'last_publications_limit', 3);
    $last_nodes = $this->contentService->getRecentContent($last_publications_limit_config);

    // Next publications.
    $next_publications_limit_config = $this->getCustomConfigByKey($config, 'next_publications_limit', 3);
    $next_nodes = $this->contentService->getFollowingContent($next_publications_limit_config);

    return [
      '#theme' => 'recent_calendar_content',
      '#last_nodes' => $last_nodes,
      '#next_nodes' => $next_nodes,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getConfigSpecificFormFields(FormStateInterface &$form_state, Request &$request, array $block_configuration) {

    $form = [];

    // Last publications limit.
    $last_publications_limit_default_value = $this->getCustomConfigByKey($block_configuration, 'last_publications_limit', 3);

    $form['last_publications_limit'] = [
      '#type' => 'number',
      '#title' => $this->t('Limit number of recently published nodes'),
      '#required' => FALSE,
      '#default_value' => $last_publications_limit_default_value,
    ];

    // Next publications limit.
    $next_publications_limit_default_value = $this->getCustomConfigByKey($block_configuration, 'next_publications_limit', 3);

    $form['next_publications_limit'] = [
      '#type' => 'number',
      '#title' => $this->t('Limit number of nodes to be published'),
      '#required' => FALSE,
      '#default_value' => $next_publications_limit_default_value,
    ];

    return $form;
  }

}