class EntityTypeBundleInfo

class EntityTypeBundleInfo implements EntityTypeBundleInfoInterface {
    use UseCacheBackendTrait;
    
    /**
     * Static cache of bundle information.
     *
     * @var array
     */
    protected $bundleInfo;
    
    /**
     * The language manager.
     *
     * @var \Drupal\Core\Language\LanguageManagerInterface
     */
    protected $languageManager;
    
    /**
     * The module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface
     */
    protected $moduleHandler;
    
    /**
     * The typed data manager.
     *
     * @var \Drupal\Core\TypedData\TypedDataManagerInterface
     */
    protected $typedDataManager;
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * Constructs a new EntityTypeBundleInfo.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
     *   The language manager.
     * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
     *   The module handler.
     * @param \Drupal\Core\TypedData\TypedDataManagerInterface $typed_data_manager
     *   The typed data manager.
     * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
     *   The cache backend.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, LanguageManagerInterface $language_manager, ModuleHandlerInterface $module_handler, TypedDataManagerInterface $typed_data_manager, CacheBackendInterface $cache_backend) {
        $this->entityTypeManager = $entity_type_manager;
        $this->languageManager = $language_manager;
        $this->moduleHandler = $module_handler;
        $this->typedDataManager = $typed_data_manager;
        $this->cacheBackend = $cache_backend;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getBundleInfo($entity_type_id) {
        $bundle_info = $this->getAllBundleInfo();
        return $bundle_info[$entity_type_id] ?? [];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getAllBundleInfo() {
        if (empty($this->bundleInfo)) {
            $langcode = $this->languageManager
                ->getCurrentLanguage()
                ->getId();
            if ($cache = $this->cacheGet("entity_bundle_info:{$langcode}")) {
                $this->bundleInfo = $cache->data;
            }
            else {
                $this->bundleInfo = $this->moduleHandler
                    ->invokeAll('entity_bundle_info');
                foreach ($this->entityTypeManager
                    ->getDefinitions() as $type => $entity_type) {
                    // First look for entity types that act as bundles for others, load them
                    // and add them as bundles.
                    if ($bundle_entity_type = $entity_type->getBundleEntityType()) {
                        foreach ($this->entityTypeManager
                            ->getStorage($bundle_entity_type)
                            ->loadMultiple() as $entity) {
                            $this->bundleInfo[$type][$entity->id()]['label'] = $entity->label();
                        }
                    }
                    elseif (!isset($this->bundleInfo[$type])) {
                        $this->bundleInfo[$type][$type]['label'] = $entity_type->getLabel();
                    }
                }
                $this->moduleHandler
                    ->alter('entity_bundle_info', $this->bundleInfo);
                $this->cacheSet("entity_bundle_info:{$langcode}", $this->bundleInfo, Cache::PERMANENT, [
                    'entity_types',
                    'entity_bundles',
                ]);
            }
        }
        return $this->bundleInfo;
    }
    
    /**
     * {@inheritdoc}
     */
    public function clearCachedBundles() {
        $this->bundleInfo = [];
        Cache::invalidateTags([
            'entity_bundles',
        ]);
        // Entity bundles are exposed as data types, clear that cache too.
        $this->typedDataManager
            ->clearCachedDefinitions();
    }

}