"Test Connection" button improvement

src/app/code/community/Zendesk/Zendesk/Helper/Data.php

@@ -360,10 +360,24 @@ public function isValidDate($date) {
     public function getFormatedDateTime($dateToFormat) {
         return Mage::helper('core')->formatDate($dateToFormat, 'medium', true);
     }
-
-    public function getConnectionStatus() {
+
+    /**
+     * Tests if the provided username and password is correct. If either is empty the database values will be used.
+     *
+     * @param  string $domain
+     * @param  string $username
+     * @param  string $password
+     * @return array
+     */
+    public function getConnectionStatus($domain = null, $username = null, $password = null) {
         try {
-            $user = Mage::getModel('zendesk/api_users')->me();
+            $usersApi = Mage::getModel('zendesk/api_users');
+
+            $usersApi->setUsername($username);
+            $usersApi->setPassword($password);
+            $usersApi->setDomain($domain);
+
+            $user = $usersApi->me();
 
             if(isset($user['id'])) {
                 return array(

src/app/code/community/Zendesk/Zendesk/Model/Api/Abstract.php

@@ -17,9 +17,70 @@
 
 class Zendesk_Zendesk_Model_Api_Abstract extends Mage_Core_Model_Abstract
 {
+    protected $username = null;
+    protected $password = null;
+    protected $domain = null;
+
+    /**
+     * Sets the domain to be used for this instance
+     * 
+     * @param string $username The user domain
+     */
+    public function setDomain($domain)
+    {
+        $this->domain = $domain;
+    }
+
+    /**
+     * Sets the email to be used for this instance
+     * 
+     * @param string $username The user email
+     */
+    public function setUsername($username)
+    {
+        $this->username = $username;
+    }
+
+    /**
+     * Sets the API token for this instance
+     * 
+     * @param string $password The API token
+     */
+    public function setPassword($password)
+    {
+        $this->password = $password;
+    }
+
+    public function getUsername()
+    {
+        if ($this->username === null) {
+            $this->username = Mage::getStoreConfig('zendesk/general/email');
+        }
+
+        return $this->username . '/token';
+    }
+
+    public function getPassword()
+    {
+        if ($this->password === null) {
+            $this->password = Mage::getStoreConfig('zendesk/general/password');
+        }
+
+        return $this->password; 
+    }
+
+    public function getDomain()
+    {
+        if ($this->domain === null) {
+            $this->domain = Mage::getStoreConfig('zendesk/general/domain');
+        }
+
+        return $this->domain; 
+    }
+
     protected function _getUrl($path)
     {
-        $base_url = 'https://' . Mage::getStoreConfig('zendesk/general/domain') . '/api/v2';
+        $base_url = 'https://' . $this->getDomain() . '/api/v2';
         $path = trim($path, '/');
         return $base_url . '/' . $path;
     }
@@ -48,8 +109,8 @@ protected function _call($endpoint, $params = null, $method = 'GET', $data = nul
         );
 
         $client->setAuth(
-            Mage::getStoreConfig('zendesk/general/email'). '/token',
-            Mage::getStoreConfig('zendesk/general/password')
+            $this->getUsername(),
+            $this->getPassword()
         );
 
         if($method == 'POST' || $method == "PUT") {

src/app/code/community/Zendesk/Zendesk/controllers/Adminhtml/ZendeskController.php

@@ -463,7 +463,13 @@ public function clearLogAction()
 
     public function checkOutboundAction()
     {
-        $connection = Mage::helper('zendesk')->getConnectionStatus();
+        $request = Mage::app()->getRequest();
+
+        $connection = Mage::helper('zendesk')->getConnectionStatus(
+            $request->getParam('domain'),
+            $request->getParam('username'),
+            $request->getParam('password')
+        );
 
         $this->getResponse()->clearHeaders()->setHeader('Content-type','application/json', true);
         $this->getResponse()->setBody(json_encode($connection));

src/app/design/adminhtml/default/default/template/zendesk/config/button-test-zendesk.phtml

@@ -22,6 +22,11 @@
     function checkZendApiConnection() {
         var request = new Ajax.Request('<?php echo $this->getUrl('adminhtml/zendesk/checkOutbound'); ?>', {
             method: 'get',
+            parameters: {
+                domain: document.getElementById('zendesk_general_domain').value,
+                username: document.getElementById('zendesk_general_email').value,
+                password: document.getElementById('zendesk_general_password').value
+            },
             onCreate: function() {
                 document.getElementById('zendesk-api-connection-results').innerHTML = '';
             },