Site::onMainSiteDelete

static function onMainSiteDelete($siteId)
{
	Rights::setOff();

	$realSiteId = null;
	// delete pages
	$res = Landing::getList(array(
		'select' => array(
			'ID', 'SITE_ID'
		),
		'filter' => array(
			'=SITE.SMN_SITE_ID' => $siteId,
			'=SITE.DELETED' => ['Y', 'N'],
			'=DELETED' => ['Y', 'N']
		)
	));
	while ($row = $res->fetch())
	{
		$realSiteId = $row['SITE_ID'];
		Landing::delete($row['ID'], true);
	}
	// detect site
	if (!$realSiteId)
	{
		$res = self::getList(array(
			'select' => array(
				'ID'
			),
			'filter' => array(
				'=SMN_SITE_ID' => $siteId,
				'=DELETED' => ['Y', 'N']
			)
		));
		if ($row = $res->fetch())
		{
			$realSiteId = $row['ID'];
		}
	}
	// and delete site
	if ($realSiteId)
	{
		self::delete($realSiteId);
	}

	Rights::setOn();
}