1 files changed, 122 insertions, 0 deletions
diff --git a/app/Auth/Github.php b/app/Auth/Github.php
new file mode 100644
index 00000000..44bcc6c8
--- /dev/null
+++ b/app/Auth/Github.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace Auth;
+
+use Event\AuthEvent;
+
+/**
+ * Github backend
+ *
+ * @package auth
+ */
+class Github extends Base
+{
+    /**
+     * Backend name
+     *
+     * @var string
+     */
+    const AUTH_NAME = 'Github';
+
+    /**
+     * OAuth2 instance
+     *
+     * @access private
+     * @var \Core\OAuth2
+     */
+    private $service;
+
+    /**
+     * Authenticate a Github user
+     *
+     * @access public
+     * @param  string  $github_id   Github user id
+     * @return boolean
+     */
+    public function authenticate($github_id)
+    {
+        $user = $this->user->getByGithubId($github_id);
+
+        if (! empty($user)) {
+            $this->userSession->refresh($user);
+            $this->container['dispatcher']->dispatch('auth.success', new AuthEvent(self::AUTH_NAME, $user['id']));
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Unlink a Github account for a given user
+     *
+     * @access public
+     * @param  integer   $user_id    User id
+     * @return boolean
+     */
+    public function unlink($user_id)
+    {
+        return $this->user->update(array(
+            'id' => $user_id,
+            'github_id' => '',
+        ));
+    }
+
+    /**
+     * Update the user table based on the Github profile information
+     *
+     * @access public
+     * @param  integer   $user_id    User id
+     * @param  array     $profile    Github profile
+     * @return boolean
+     */
+    public function updateUser($user_id, array $profile)
+    {
+        $user = $this->user->getById($user_id);
+
+        return $this->user->update(array(
+            'id' => $user_id,
+            'github_id' => $profile['id'],
+            'email' => $profile['email'] ?: $user['email'],
+            'name' => $profile['name'] ?: $user['name'],
+        ));
+    }
+
+    /**
+     * Get OAuth2 configured service
+     *
+     * @access public
+     * @return \Core\OAuth2
+     */
+    public function getService()
+    {
+        if (empty($this->service)) {
+            $this->service = $this->oauth->createService(
+                GITHUB_CLIENT_ID,
+                GITHUB_CLIENT_SECRET,
+                $this->helper->url->to('oauth', 'github', array(), '', true),
+                'https://github.com/login/oauth/authorize',
+                'https://github.com/login/oauth/access_token',
+                array()
+            );
+        }
+
+        return $this->service;
+    }
+
+    /**
+     * Get Github profile
+     *
+     * @access public
+     * @param  string  $code
+     * @return array
+     */
+    public function getProfile($code)
+    {
+        $this->getService()->getAccessToken($code);
+
+        return $this->httpClient->getJson(
+            'https://api.github.com/user',
+            array($this->getService()->getAuthorizationHeader())
+        );
+    }
+}