public static function SetDocumentTypeByFiles($deal_id)
{
$res = 0;
$isProposal = CArkaCrm::CountPropsInDeal($deal_id) > 0;
$isInvoice = CArkaCrm::CountInvoicesInDeal($deal_id) > 0;
if ($isProposal && !$isInvoice) {
$res = 1;
} elseif ($isInvoice) {
$res = 2;
}
if ($res == 1 || $res == 2) {
CArkaCrm::SetDealDocumentType($deal_id, $res);
}
}