class LayoutBuilderEntityClone

class LayoutBuilderEntityClone extends ConfigEntityCloneBase {
    
    /**
     * Uuid generator service.
     *
     * @var \Drupal\Component\Uuid\UuidInterface
     */
    protected $uuidGenerator;
    
    /**
     * LayoutBuilderEntityClone constructor.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, $entity_type_id, UuidInterface $uuid) {
        parent::__construct($entity_type_manager, $entity_type_id);
        $this->uuidGenerator = $uuid;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
        return new static($container->get('entity_type.manager'), $entity_type->id(), $container->get('uuid'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function cloneEntity(EntityInterface $entity, EntityInterface $cloned_entity, array $properties = []) {
        
        /** @var \Drupal\layout_builder\Entity\LayoutEntityDisplayInterface $cloned_entity */
        
        /** @var \Drupal\layout_builder\Entity\LayoutEntityDisplayInterface $entity */
        // We need to create an entity, save it, then adjust layout builder settings
        // and save it again, because for new entities layout_builder module stacks
        // all fields into display.
        // @see \Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay::preSave()
        $cloned_entity = parent::cloneEntity($entity, $cloned_entity, $properties);
        if ($cloned_entity->isLayoutBuilderEnabled()) {
            $cloned_entity->removeAllSections();
            foreach ($entity->getSections() as $section) {
                $cloned_components = [];
                foreach ($section->getComponents() as $section_component) {
                    $plugin = $section_component->getPlugin();
                    $component_array = $section_component->toArray();
                    $deriver_id = $plugin->getPluginDefinition()['id'];
                    switch ($deriver_id) {
                        case 'field_block':
                        case 'extra_field_block':
                            $full_id = explode(PluginBase::DERIVATIVE_SEPARATOR, $plugin->getPluginId());
                            $field_name = end($full_id);
                            $derivative_id = $cloned_entity->getTargetEntityTypeId() . PluginBase::DERIVATIVE_SEPARATOR . $cloned_entity->getTargetBundle() . PluginBase::DERIVATIVE_SEPARATOR . $field_name;
                            break;
                        case 'inline_block':
                            $derivative_id = $plugin->getDerivativeId();
                            break;
                        default:
                            if ($plugin instanceof DerivativeInspectionInterface) {
                                $derivative_id = $plugin->getDerivativeId();
                            }
                            else {
                                $derivative_id = '';
                            }
                            break;
                    }
                    $cloned_plugin_id = $deriver_id . (!empty($derivative_id) ? PluginBase::DERIVATIVE_SEPARATOR . $derivative_id : '');
                    $component_array['uuid'] = $this->uuidGenerator
                        ->generate();
                    $component_array['configuration']['id'] = $cloned_plugin_id;
                    $cloned_components[] = SectionComponent::fromArray($component_array);
                }
                // We don't expect here third-party settings, but just in case.
                $third_party_settings = [];
                foreach ($section->getThirdPartyProviders() as $third_party_provider) {
                    $third_party_settings[$third_party_provider] = $section->getThirdPartySettings($third_party_provider);
                }
                $cloned_section = new Section($section->getLayoutId(), $section->getLayoutSettings(), $cloned_components, $third_party_settings);
                $cloned_entity->appendSection($cloned_section);
            }
            $cloned_entity->save();
        }
        return $cloned_entity;
    }

}