MaxiGallery to Simple Gallery converter

convert.php

<?php
define('MODX_API_MODE', true);
include_once("index.php");
$modx->db->connect();
if (empty ($modx->config)) {
    $modx->getSettings();
}
include_once(MODX_BASE_PATH.'assets/plugins/simplegallery/lib/table.class.php');
$modx->invokeEvent("OnManagerPageInit");
$q = $modx->db->query("SELECT * FROM {$modx->getFullTableName('maxigallery')} ORDER BY `gal_id` ASC, `pos` ASC, `id` ASC");
$fs = \Helpers\FS::getInstance();
$sg = new \SimpleGallery\sgData($modx);
while ($row = $modx->db->getRow($q)) {
    $path = 'assets/galleries/'.$row['gal_id'].'/'.$row['filename'];
    if ($fs->checkFile($path)) {
        $sg->create();
        $sg->set('sg_rid',$row['gal_id']);
        $sg->set('sg_title',$row['title']);
        $sg->set('sg_description',$row['descr']);
		$sg->set('sg_createdon',$row['date']);
        $sg->set('sg_image',$path);
        $fs->unlink('assets/galleries/'.$row['gal_id'].'/tn_'.$row['filename']);
        $name = MODX_BASE_PATH . $path;
        $info = getimagesize($name);
        $properties = array(
            'width' => $info[0],
            'height' => $info[1],
            'size' => filesize($name)
        );
        $sg->set('sg_properties',$properties);
        $sg->save();
    }
}