class MigrateExternalTranslatedTestSource

class MigrateExternalTranslatedTestSource extends SourcePluginBase {
    
    /**
     * The data to import.
     *
     * @var array
     */
    protected $import = [
        [
            'name' => 'cat',
            'title' => 'Cat',
            'lang' => 'English',
        ],
        [
            'name' => 'cat',
            'title' => 'Chat',
            'lang' => 'French',
        ],
        [
            'name' => 'cat',
            'title' => 'Gato',
            'lang' => 'Spanish',
        ],
        [
            'name' => 'dog',
            'title' => 'Dog',
            'lang' => 'English',
        ],
        [
            'name' => 'dog',
            'title' => 'Chien',
            'lang' => 'French',
        ],
        [
            'name' => 'monkey',
            'title' => 'Monkey',
            'lang' => 'English',
        ],
    ];
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        return [
            'name' => $this->t('Unique name'),
            'title' => $this->t('Title'),
            'lang' => $this->t('Language'),
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function __toString() {
        return '';
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIds() {
        $ids['name']['type'] = 'string';
        if (!$this->configuration['default_lang']) {
            $ids['lang']['type'] = 'string';
        }
        return $ids;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function initializeIterator() {
        $data = [];
        // Keep the rows with the right languages.
        $want_default = $this->configuration['default_lang'];
        foreach ($this->import as $row) {
            $is_english = $row['lang'] == 'English';
            if ($want_default == $is_english) {
                $data[] = $row;
            }
        }
        return new \ArrayIterator($data);
    }

}