From dc7b5f9419ddb9b72b6657dd865b907104990403 Mon Sep 17 00:00:00 2001
From: Bojan Zelic <bnzelic@gmail.com>
Date: Wed, 16 Jul 2014 17:23:36 -0700
Subject: [PATCH] Added Refund support

---
 src/AIMGateway.php               |  5 +++++
 src/Message/AIMRefundRequest.php | 24 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 src/Message/AIMRefundRequest.php

diff --git a/src/AIMGateway.php b/src/AIMGateway.php
index 990c5928..e91a49a5 100644
--- a/src/AIMGateway.php
+++ b/src/AIMGateway.php
@@ -76,4 +76,9 @@ public function void(array $parameters = array())
     {
         return $this->createRequest('\Omnipay\AuthorizeNet\Message\AIMVoidRequest', $parameters);
     }
+
+    public function refund(array $parameters = array())
+    {
+      return $this->createRequest('\Omnipay\AuthorizeNet\Message\AIMRefundRequest', $parameters);
+    }
 }
diff --git a/src/Message/AIMRefundRequest.php b/src/Message/AIMRefundRequest.php
new file mode 100644
index 00000000..6f339e2e
--- /dev/null
+++ b/src/Message/AIMRefundRequest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Omnipay\AuthorizeNet\Message;
+
+/**
+ * Authorize.Net Refund Request
+ */
+class AIMRefundRequest extends AbstractRequest
+{
+  protected  $action = 'CREDIT';
+  public function getData()
+  {
+    $data = $this->getBaseData('RefundTransaction');
+
+    $this->validate('amount', 'transactionReference');
+
+    $data['x_trans_id'] = $this->getTransactionReference();
+    $data['x_card_num'] = $this->getCard()->getNumber();
+    $data['x_exp_date'] = $this->getCard()->getExpiryDate('my');
+    $data['x_amount']   = $this->getAmount();
+
+    return $data;
+  }
+}