Change how invoice email is done to an observer event

src/app/code/community/Fontis/EwayAu/Model/Direct.php

@@ -374,26 +374,4 @@ public function parseXmlResponse($xmlResponse)
 
         return $newResArr;
     }
-
-    /**
-     * Check if invoice email can be sent, and send it
-     * 
-     * @param Mage_Sales_Model_Order_Invoice $invoice
-     * @param Mage_Sales_Model_Order_Payment $payment
-     * @return Fontis_EwayAu_Model_Direct
-     */
-    public function processInvoice($invoice, $payment)
-    {
-        parent::processInvoice($invoice, $payment);
-        try {
-            $storeId = $invoice->getOrder()->getStoreId();
-            if (Mage::helper('sales')->canSendNewInvoiceEmail($storeId)) {
-                $invoice->save();
-                $invoice->sendEmail();
-            }
-        } catch (Exception $e) {
-            mage::logException($e);
-        }    
-        return $this;
-    }
 }

src/app/code/community/Fontis/EwayAu/Model/Observer.php

@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Fontis eWAY Australia payment gateway
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Open Software License (OSL 3.0)
+ * that is bundled with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://opensource.org/licenses/osl-3.0.php
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to [email protected] so you can be sent a copy immediately.
+ *
+ * Original code copyright (c) 2008 Irubin Consulting Inc. DBA Varien
+ *
+ * @category   Fontis
+ * @package    Fontis_EwayAu
+ * @copyright  Copyright (c) 2010 Fontis (http://www.fontis.com.au)
+ * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+ */
+
+/**
+ * Observer to handle invoice email sending after payment was completed
+ * 
+ * @author     Lucas van Staden ([email protected])
+ * */
+class Fontis_EwayAu_Model_Observer {
+
+    /**
+     * Email invoice when all order objects have been completed
+     * 
+     * @param type $observer
+     */
+    public function checkout_submit_all_after($observer) {
+        $order = $observer->getOrder();
+        if ($order->hasInvoices()) {
+            foreach ($order->getInvoiceCollection() as $invoice) {
+                // email out the invoices 
+                try {
+                    $storeId = $invoice->getOrder()->getStoreId();
+                    if (Mage::helper('sales')->canSendNewInvoiceEmail($storeId)) {
+                        $invoice->sendEmail();
+                    }
+                } catch (Exception $e) {
+                    mage::logException($e);
+                }
+            }
+        }
+        return $this;
+    }
+
+}

src/app/code/community/Fontis/EwayAu/etc/config.xml

@@ -74,6 +74,17 @@
                 </types>
             </cc>
         </payment>
+        <events>
+            <checkout_submit_all_after>
+                <observers>
+                    <ewayau_checkout_submit_all_after>
+                        <type>singleton</type>
+                        <class>ewayau/observer</class>
+                        <method>checkout_submit_all_after</method>
+                    </ewayau_checkout_submit_all_after>
+                </observers>
+            </checkout_submit_all_after>
+        </events>
     </global>
     <frontend>
         <secure_url>