devel_wizard-2.x-dev/src/Controller/AutocompleteConfigEntityInstanceController.php

<?php

declare(strict_types=1);

namespace Drupal\devel_wizard\Controller;

use Drupal\Core\Config\Entity\ConfigEntityTypeInterface;
use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;

class AutocompleteConfigEntityInstanceController extends ControllerBase {

  protected int $minKeywordLength = 2;

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

  public function __construct(EntityTypeManagerInterface $entityTypeManager) {
    $this->entityTypeManager = $entityTypeManager;
  }

  public function body(Request $request, string $entityTypeId) {
    $etm = $this->entityTypeManager();
    $matches = [];

    $keyword = mb_strtolower($request->query->get('q', ''));
    if (mb_strlen($keyword) < $this->minKeywordLength
      || !$etm->hasDefinition($entityTypeId)
    ) {
      return new JsonResponse($matches);
    }

    /* @noinspection PhpUnhandledExceptionInspection */
    $entityType = $etm->getDefinition($entityTypeId);
    if (!($entityType instanceof ConfigEntityTypeInterface)) {
      return new JsonResponse($matches);
    }

    /* @noinspection PhpUnhandledExceptionInspection */
    $entities = $etm
      ->getStorage($entityTypeId)
      ->loadMultiple();

    foreach ($entities as $entity) {
      if (str_contains(mb_strtolower($entity->id()), $keyword)
        || str_contains(mb_strtolower($entity->label()), $keyword)
      ) {
        $matches[] = [
          'value' => $entity->id(),
          'label' => $entity->label() . ' (' . $entity->id() . ')',
        ];
      }
    }

    return new JsonResponse($matches);
  }

}