OpenCart 🇺🇦

$this->load->model('payment/pp_express');
	$this->load->language('payment/pp_express');

	$json = array();

	if (isset($this->request->get['paypal_order_transaction_id'])) {
		$transaction = $this->model_payment_pp_express->getFailedTransaction($this->request->get['paypal_order_transaction_id']);

		if ($transaction) {
			$call_data = unserialize($transaction['call_data']);

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

			if ($result) {

				$parent_transaction = $this->model_payment_pp_express->getLocalTransaction($transaction['parent_transaction_id']);

				if ($parent_transaction['amount'] == abs($transaction['amount'])) {
					$this->db->query("UPDATE `" . DB_PREFIX . "paypal_order_transaction` SET `payment_status` = 'Refunded' WHERE `transaction_id` = '" . $this->db->escape($transaction['parent_transaction_id']) . "' LIMIT 1");
				} else {
					$this->db->query("UPDATE `" . DB_PREFIX . "paypal_order_transaction` SET `payment_status` = 'Partially-Refunded' WHERE `transaction_id` = '" . $this->db->escape($transaction['parent_transaction_id']) . "' LIMIT 1");
				}

				if (isset($result['REFUNDTRANSACTIONID'])) {
					$transaction['transaction_id'] = $result['REFUNDTRANSACTIONID'];
				} else {
					$transaction['transaction_id'] = $result['TRANSACTIONID'];
				}

				if (isset($result['PAYMENTTYPE'])) {
					$transaction['payment_type'] = $result['PAYMENTTYPE'];
				} else {
					$transaction['payment_type'] = $result['REFUNDSTATUS'];
				}

				if (isset($result['PAYMENTSTATUS'])) {
					$transaction['payment_status'] = $result['PAYMENTSTATUS'];
				} else {
					$transaction['payment_status'] = 'Refunded';
				}

				if (isset($result['AMT'])) {
					$transaction['amount'] = $result['AMT'];
				} else {
					$transaction['amount'] = $transaction['amount'];
				}

				$transaction['pending_reason'] = (isset($result['PENDINGREASON']) ? $result['PENDINGREASON'] : '');

				$this->model_payment_pp_express->updateTransaction($transaction);

				$json['success'] = $this->language->get('success_transaction_resent');
			} else {
				$json['error'] = $this->language->get('error_timeout');
			}
		} else {
			$json['error'] = $this->language->get('error_transaction_missing');
		}
	} else {
		$json['error'] = $this->language->get('error_data');
	}

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