class EntityTypeInfoController

class EntityTypeInfoController extends ControllerBase {
    
    /**
     * The dumper service.
     *
     * @var \Drupal\devel\DevelDumperManagerInterface
     */
    protected $dumper;
    
    /**
     * The installed entity definition repository service.
     *
     * @var \Drupal\Core\Entity\EntityLastInstalledSchemaRepositoryInterface
     */
    protected $entityLastInstalledSchemaRepository;
    
    /**
     * EntityTypeInfoController constructor.
     *
     * @param \Drupal\devel\DevelDumperManagerInterface $dumper
     *   The dumper service.
     * @param \Drupal\Core\Entity\EntityLastInstalledSchemaRepositoryInterface $entityLastInstalledSchemaRepository
     *   The installed entity definition repository service.
     */
    public function __construct(DevelDumperManagerInterface $dumper, EntityLastInstalledSchemaRepositoryInterface $entityLastInstalledSchemaRepository) {
        $this->dumper = $dumper;
        $this->entityLastInstalledSchemaRepository = $entityLastInstalledSchemaRepository;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('devel.dumper'), $container->get('entity.last_installed_schema.repository'));
    }
    
    /**
     * Builds the entity types overview page.
     *
     * @return array
     *   A render array as expected by the renderer.
     */
    public function entityTypeList() {
        $headers = [
            $this->t('ID'),
            $this->t('Name'),
            $this->t('Provider'),
            $this->t('Class'),
            $this->t('Operations'),
        ];
        $rows = [];
        foreach ($this->entityTypeManager()
            ->getDefinitions() as $entity_type_id => $entity_type) {
            $row['id'] = [
                'data' => $entity_type->id(),
                'filter' => TRUE,
            ];
            $row['name'] = [
                'data' => $entity_type->getLabel(),
                'filter' => TRUE,
            ];
            $row['provider'] = [
                'data' => $entity_type->getProvider(),
                'filter' => TRUE,
            ];
            $row['class'] = [
                'data' => $entity_type->getClass(),
                'filter' => TRUE,
            ];
            $row['operations']['data'] = [
                '#type' => 'operations',
                '#links' => [
                    'devel' => [
                        'title' => $this->t('Devel'),
                        'url' => Url::fromRoute('devel.entity_info_page.detail', [
                            'entity_type_id' => $entity_type_id,
                        ]),
                        'attributes' => [
                            'class' => [
                                'use-ajax',
                            ],
                            'data-dialog-type' => 'modal',
                            'data-dialog-options' => Json::encode([
                                'width' => 700,
                                'minHeight' => 500,
                            ]),
                        ],
                    ],
                    'fields' => [
                        'title' => $this->t('Fields'),
                        'url' => Url::fromRoute('devel.entity_info_page.fields', [
                            'entity_type_id' => $entity_type_id,
                        ]),
                        'attributes' => [
                            'class' => [
                                'use-ajax',
                            ],
                            'data-dialog-type' => 'modal',
                            'data-dialog-options' => Json::encode([
                                'width' => 700,
                                'minHeight' => 500,
                            ]),
                        ],
                    ],
                ],
            ];
            $rows[$entity_type_id] = $row;
        }
        ksort($rows);
        $output['entities'] = [
            '#type' => 'devel_table_filter',
            '#filter_label' => $this->t('Search'),
            '#filter_placeholder' => $this->t('Enter entity type id, provider or class'),
            '#filter_description' => $this->t('Enter a part of the entity type id, provider or class to filter by.'),
            '#header' => $headers,
            '#rows' => $rows,
            '#empty' => $this->t('No entity types found.'),
            '#sticky' => TRUE,
            '#attributes' => [
                'class' => [
                    'devel-entity-type-list',
                ],
            ],
        ];
        return $output;
    }
    
    /**
     * Returns a render array representation of the entity type.
     *
     * @param string $entity_type_id
     *   The name of the entity type to retrieve.
     *
     * @return array
     *   A render array containing the entity type.
     *
     * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
     *   If the requested entity type is not defined.
     */
    public function entityTypeDetail($entity_type_id) {
        if (!($entity_type = $this->entityTypeManager()
            ->getDefinition($entity_type_id, FALSE))) {
            throw new NotFoundHttpException();
        }
        return $this->dumper
            ->exportAsRenderable($entity_type, $entity_type_id);
    }
    
    /**
     * Returns a render array representation of the entity type field definitions.
     *
     * @param string $entity_type_id
     *   The name of the entity type to retrieve.
     *
     * @return array
     *   A render array containing the entity type field definitions.
     *
     * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
     *   If the requested entity type is not defined.
     */
    public function entityTypeFields($entity_type_id) {
        if (!$this->entityTypeManager()
            ->getDefinition($entity_type_id, FALSE)) {
            throw new NotFoundHttpException();
        }
        $field_storage_definitions = $this->entityLastInstalledSchemaRepository
            ->getLastInstalledFieldStorageDefinitions($entity_type_id);
        return $this->dumper
            ->exportAsRenderable($field_storage_definitions, $entity_type_id);
    }

}