class EntityTranslationSettings

class EntityTranslationSettings extends DrupalSqlBase {
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        // Query all meaningful variables for entity translation.
        $query = $this->select('variable', 'v')
            ->fields('v', [
            'name',
            'value',
        ]);
        $condition = $query->orConditionGroup()
            ->condition('name', 'entity_translation_entity_types')
            ->condition('name', 'entity_translation_taxonomy')
            ->condition('name', 'entity_translation_settings_%', 'LIKE')
            ->condition('name', 'language_content_type_%', 'LIKE');
        $query->condition($condition);
        return $query;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function initializeIterator() {
        $results = array_map('unserialize', $this->prepareQuery()
            ->execute()
            ->fetchAllKeyed());
        $rows = [];
        // Find out which entity type uses entity translation by looking at the
        // 'entity_translation_entity_types' variable.
        $entity_types = array_filter($results['entity_translation_entity_types']);
        // If no entity type uses entity translation, there's nothing to do.
        if (empty($entity_types)) {
            return new \ArrayIterator($rows);
        }
        // Find out which node type uses entity translation by looking at the
        // 'language_content_type_%' variables.
        $node_types = [];
        foreach ($results as $name => $value) {
            if (preg_match('/^language_content_type_(.+)$/', $name, $matches) && (int) $value === 4) {
                $node_types[] = $matches[1];
            }
        }
        // Find out which vocabulary uses entity translation by looking at the
        // 'entity_translation_taxonomy' variable.
        $vocabularies = [];
        if (isset($results['entity_translation_taxonomy']) && is_array($results['entity_translation_taxonomy'])) {
            $vocabularies = array_keys(array_filter($results['entity_translation_taxonomy']));
        }
        if (in_array('node', $entity_types, TRUE) && !empty($node_types)) {
            // For each node type that uses entity translation, check if a
            // settings variable exists for that node type, otherwise use default
            // values.
            foreach ($node_types as $node_type) {
                $settings = $results['entity_translation_settings_node__' . $node_type] ?? [];
                $rows[] = [
                    'id' => 'node.' . $node_type,
                    'target_entity_type_id' => 'node',
                    'target_bundle' => $node_type,
                    'default_langcode' => $settings['default_language'] ?? 'und',
                    // The Drupal 7 'hide_language_selector' configuration has become
                    // 'language_alterable' in Drupal 8 so we need to negate the value we
                    // receive from the source. The Drupal 7 'hide_language_selector'
                    // default value for the node entity type was FALSE so in Drupal 8 it
                    // should be set to TRUE, unlike the other entity types for which
                    // it's the opposite.
'language_alterable' => isset($settings['hide_language_selector']) ? (bool) (!$settings['hide_language_selector']) : TRUE,
                    'untranslatable_fields_hide' => isset($settings['shared_fields_original_only']) ? (bool) $settings['shared_fields_original_only'] : FALSE,
                ];
            }
        }
        if (in_array('comment', $entity_types, TRUE) && !empty($node_types)) {
            // A comment type uses entity translation if the associated node type
            // uses it. So, for each node type that uses entity translation, check
            // if a settings variable exists for that comment type, otherwise use
            // default values.
            foreach ($node_types as $node_type) {
                $settings = $results['entity_translation_settings_comment__comment_node_' . $node_type] ?? [];
                // Forum uses a hardcoded comment type name, so make sure we use it
                // when we're dealing with forum comment type.
                $bundle = $node_type == 'forum' ? 'comment_forum' : 'comment_node_' . $node_type;
                $rows[] = [
                    'id' => 'comment.' . $bundle,
                    'target_entity_type_id' => 'comment',
                    'target_bundle' => $bundle,
                    'default_langcode' => $settings['default_language'] ?? 'xx-et-current',
                    // The Drupal 7 'hide_language_selector' configuration has become
                    // 'language_alterable' in Drupal 8 so we need to negate the value we
                    // receive from the source. The Drupal 7 'hide_language_selector'
                    // default value for the comment entity type was TRUE so in Drupal 8
                    // it should be set to FALSE.
'language_alterable' => isset($settings['hide_language_selector']) ? (bool) (!$settings['hide_language_selector']) : FALSE,
                    'untranslatable_fields_hide' => isset($settings['shared_fields_original_only']) ? (bool) $settings['shared_fields_original_only'] : FALSE,
                ];
            }
        }
        if (in_array('taxonomy_term', $entity_types, TRUE) && !empty($vocabularies)) {
            // For each vocabulary that uses entity translation, check if a
            // settings variable exists for that vocabulary, otherwise use default
            // values.
            foreach ($vocabularies as $vocabulary) {
                $settings = $results['entity_translation_settings_taxonomy_term__' . $vocabulary] ?? [];
                $rows[] = [
                    'id' => 'taxonomy_term.' . $vocabulary,
                    'target_entity_type_id' => 'taxonomy_term',
                    'target_bundle' => $vocabulary,
                    'default_langcode' => $settings['default_language'] ?? 'xx-et-default',
                    // The Drupal 7 'hide_language_selector' configuration has become
                    // 'language_alterable' in Drupal 8 so we need to negate the value we
                    // receive from the source. The Drupal 7 'hide_language_selector'
                    // default value for the taxonomy_term entity type was TRUE so in
                    // Drupal 8 it should be set to FALSE.
'language_alterable' => isset($settings['hide_language_selector']) ? (bool) (!$settings['hide_language_selector']) : FALSE,
                    'untranslatable_fields_hide' => isset($settings['shared_fields_original_only']) ? (bool) $settings['shared_fields_original_only'] : FALSE,
                ];
            }
        }
        if (in_array('user', $entity_types, TRUE)) {
            // User entity type is not bundleable. Check if a settings variable
            // exists, otherwise use default values.
            $settings = $results['entity_translation_settings_user__user'] ?? [];
            $rows[] = [
                'id' => 'user.user',
                'target_entity_type_id' => 'user',
                'target_bundle' => 'user',
                'default_langcode' => $settings['default_language'] ?? 'xx-et-default',
                // The Drupal 7 'hide_language_selector' configuration has become
                // 'language_alterable' in Drupal 8 so we need to negate the value we
                // receive from the source. The Drupal 7 'hide_language_selector'
                // default value for the user entity type was TRUE so in Drupal 8 it
                // should be set to FALSE.
'language_alterable' => isset($settings['hide_language_selector']) ? (bool) (!$settings['hide_language_selector']) : FALSE,
                'untranslatable_fields_hide' => isset($settings['shared_fields_original_only']) ? (bool) $settings['shared_fields_original_only'] : FALSE,
            ];
        }
        return new \ArrayIterator($rows);
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        return [
            'id' => $this->t('The configuration ID'),
            'target_entity_type_id' => $this->t('The target entity type ID'),
            'target_bundle' => $this->t('The target bundle'),
            'default_langcode' => $this->t('The default language'),
            'language_alterable' => $this->t('Whether to show language selector on create and edit pages'),
            'untranslatable_fields_hide' => $this->t('Whether to hide non translatable fields on translation forms'),
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIds() {
        $ids['id']['type'] = 'string';
        return $ids;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function doCount() {
        // Since the number of variables we fetch with query() does not match the
        // actual number of rows generated by initializeIterator(), we need to
        // override count() to return the correct count.
        return (int) $this->initializeIterator()
            ->count();
    }

}