public function exportXml()
{
$writer = new Writer();
$writer->openMemory();
$writer->startDocument();
$writer->startElement('Document');
$writer->writeAttribute('xmlns', 'urn:iso:std:iso:20022:tech:xsd:pain.001.001.03');
$writer->setIndent(true);
// header
$writer->startElement('CstmrCdtTrfInitn');
$writer->startElement('GrpHdr');
$writer->writeElement('MsgId', $this->getMessageId());
$writer->writeElement('CreDtTm', $this->getRequestDateTime());
$writer->writeElement('NbOfTxs', $this->getPayaPaymentInfo()->getNumberOfPayments());
$writer->writeElement('CtrlSum', $this->getPayaPaymentInfo()->getTotalTransactionsAmount());
$writer->startElement('InitgPty');
$writer->writeElement('Nm', $this->getPayaPaymentInfo()->getPayerName());
$writer->endElement();
$writer->endElement();
// payment info
$writer->startElement('PmtInf');
$writer->writeElement('PmtInfId', $this->payaPaymentInfo->getPaymentInfoId());
$writer->startElement('PmtMtd');
$writer->writeAttribute('Ccy', 'IRR');
$writer->write($this->payaPaymentInfo->getPaymentMethod());
$writer->endElement();
$writer->writeElement('NbOfTxs', $this->payaPaymentInfo->getNumberOfPayments());
$writer->writeElement('CtrlSum', $this->payaPaymentInfo->getTotalTransactionsAmount());
$writer->writeElement('ReqdExctnDt', $this->payaPaymentInfo->getRequestDate());
$writer->startElement('Dbtr');
$writer->writeElement('Nm', $this->payaPaymentInfo->getPayerName());
$writer->endElement();
$writer->startElement('DbtrAcct');
$writer->startElement('Id');
$writer->writeElement('IBAN', $this->payaPaymentInfo->getPayerIban());
$writer->endElement();
$writer->endElement();
$writer->startElement('DbtrAgt');
$writer->startElement('FinInstnId');
$writer->writeElement('BIC', 'BMJIIRTHXXX');
$writer->endElement();
$writer->endElement();
/** @var PayaPayment $payment */
foreach ($this->payaPaymentInfo->getPayments() as $payment) {
$writer->startElement('CdtTrfTxInf');
$writer->startElement('PmtId');
$writer->writeElement('InstrId', 'EMPTY');
$writer->writeElement('EndToEndId', 'EMPTY');
$writer->endElement();
$writer->startElement('Amt');
$writer->startElement('InstdAmt');
$writer->writeAttribute('Ccy', 'IRR');
$writer->write($payment->getAmount());
$writer->endElement();
$writer->endElement();
$writer->startElement('Cdtr');
$writer->writeElement('Nm', $payment->getCreditorName());
$writer->endElement();
$writer->startElement('CdtrAcct');
$writer->startElement('Id');
$writer->writeElement('IBAN', $payment->getCreditorIban());
$writer->endElement();
$writer->endElement();
$writer->endElement();
}
$writer->endElement();
$writer->endElement();
$writer->endElement();
$writer->endDocument();
return $writer->outputMemory();
}
