commercetools-8.x-1.2-alpha1/modules/commercetools_content/src/Plugin/Block/CommercetoolsContentCartSummaryBlock.php

<?php

namespace Drupal\commercetools_content\Plugin\Block;

use Drupal\commercetools\CommercetoolsCarts;
use Drupal\commercetools\Plugin\Block\CommercetoolsBlockBase;
use Drupal\commercetools_content\Form\ContentSettingsForm;
use Drupal\Core\Cache\Cache;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides the Commercetools Content Cart Summary block.
 *
 * @Block(
 *   id = "commercetools_content_cart_summary",
 *   admin_label = @Translation("Cart Summary"),
 * )
 */
class CommercetoolsContentCartSummaryBlock extends CommercetoolsBlockBase {

  /**
   * The container.
   *
   * @var \Symfony\Component\DependencyInjection\ContainerInterface
   */
  protected ContainerInterface $container;
  /**
   * The commercetools cart service.
   *
   * @var \Drupal\commercetools\CommercetoolsCarts
   */
  protected CommercetoolsCarts $ctCarts;

  /**
   * Default number of items to display.
   */
  protected const MAX_ITEMS_DEFAULT = 5;

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, $configuration, $plugin_id, $plugin_definition) {
    $instance = new static($configuration, $plugin_id, $plugin_definition);
    $instance->container = $container;
    $instance->ctCarts = $container->get('commercetools.carts');
    return $instance;
  }

  /**
   * {@inheritdoc}
   */
  public function blockForm($form, FormStateInterface $form_state) {
    $form = parent::blockForm($form, $form_state);
    $config = $this->getConfiguration();

    $form['max_items'] = [
      '#type' => 'number',
      '#title' => $this->t('Number of items to display'),
      '#description' => $this->t('The number of items to display in the cart summary.'),
      '#default_value' => $config['max_items'] ?? self::MAX_ITEMS_DEFAULT,
      '#min' => 1,
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function blockSubmit($form, FormStateInterface $form_state) {
    parent::blockSubmit($form, $form_state);
    $this->setConfigurationValue('max_items', $form_state->getValue('max_items'));
  }

  /**
   * {@inheritdoc}
   */
  public function buildSafe(): array {
    $cartData = $this->ctCarts->getCurrentCart();

    $output = [
      '#theme' => 'commercetools_cart_summary_block',
      '#cart' => [
        'totalLineItemQuantity' => 0,
        'lineItems' => [],
      ],
      '#max_items' => $this->getConfiguration()['max_items'] ?? self::MAX_ITEMS_DEFAULT,
    ];

    if ($cartData) {
      $output['#cart'] = $cartData->getData();
      $cartData->getCacheableMetadata()
        ->applyTo($output);
    }

    return $output;
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheContexts() {
    $cacheContexts = parent::getCacheContexts();
    return Cache::mergeContexts($cacheContexts, [
      'commercetools_cart',
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheTags(): array {
    $cacheTags = parent::getCacheTags();
    return Cache::mergeTags($cacheTags, [
      'config:' . ContentSettingsForm::CONFIGURATION_NAME,
    ]);
  }

}