ContentTranslationEnabledSetting.php

<?php

namespace Drupal\language\Plugin\migrate\process;

use Drupal\migrate\MigrateException;
use Drupal\migrate\MigrateExecutableInterface;
use Drupal\migrate\ProcessPluginBase;
use Drupal\migrate\Row;

/**
 * Determines the content translation setting.
 *
 * The source value is an indexed array of three values:
 * - The language content type, e.g. '1'
 * - The entity_translation_entity_types, an array of entity types.
 * - An entity type used with entity translation, e.g. comment.
 *
 * @MigrateProcessPlugin(
 *   id = "content_translation_enabled_setting"
 * )
 */
class ContentTranslationEnabledSetting extends ProcessPluginBase {
    
    /**
     * {@inheritdoc}
     */
    public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
        if (!is_array($value)) {
            throw new MigrateException('Input should be an array');
        }
        [
            $language_content_type,
            $entity_translation_entity_types,
            $entity_type,
        ] = $value;
        switch ($language_content_type) {
            // In the case of being 0, it will be skipped. We are not actually setting
            // a null value.
            case 0:
                $setting = NULL;
                break;
            case 1:
                $setting = FALSE;
                break;
            case 2:
                $setting = FALSE;
                break;
            case 4:
                // If entity translation is enabled return the status of comment
                // translations.
                $setting = FALSE;
                if (!empty($entity_translation_entity_types[$entity_type])) {
                    $setting = TRUE;
                }
                break;
            default:
                $setting = NULL;
                break;
        }
        return $setting;
    }

}