OpenCart 🇺🇦

$this->load->model('payment/pp_payflow_iframe');
$this->load->language('payment/pp_payflow_iframe');
$json = array();

if (isset($this->request->post['transaction_reference']) && isset($this->request->post['amount'])) {

	$transaction = $this->model_payment_pp_payflow_iframe->getTransaction($this->request->post['transaction_reference']);

	if ($transaction) {
		$call_data = array(
			'TRXTYPE' => 'C',
			'TENDER' => 'C',
			'ORIGID' => $transaction['transaction_reference'],
			'AMT' => $this->request->post['amount'],
		);

		$result = $this->model_payment_pp_payflow_iframe->call($call_data);

		if ($result['RESULT'] == 0) {
			$json['success'] = $this->language->get('text_refund_issued');

			$data = array(
				'order_id' => $transaction['order_id'],
				'type' => 'C',
				'transaction_reference' => $result['PNREF'],
				'amount' => $this->request->post['amount'],
			);

			$this->model_payment_pp_payflow_iframe->addTransaction($data);
		} else {
			$json['error'] = $result['RESPMSG'];
		}
	} else {
		$json['error'] = $this->language->get('error_missing_order');
	}
} else {
	$json['error'] = $this->language->get('error_missing_data');
}

$this->response->setOutput(json_encode($json));