public function saveUserInfo()
{
if (!isset($_SESSION)) {
session_start();
}
$code = \Input::get('code');
$lti = \Input::get('lti');
$instanceFromDB = LtiConfigurations::find($lti);
$clientId = $instanceFromDB['DeveloperId'];
$developerSecret = $instanceFromDB['DeveloperSecret'];
$opts = array('http' => array('method' => 'POST'));
$context = stream_context_create($opts);
$url = "https://{$_SESSION['domain']}/login/oauth2/token?client_id={$clientId}&client_secret={$developerSecret}&code={$code}";
$userTokenJSON = file_get_contents($url, false, $context, -1, 40000);
$userToken = json_decode($userTokenJSON);
$actualToken = $userToken->access_token;
$encryptedToken = \Crypt::encrypt($actualToken);
$_SESSION['userToken'] = $encryptedToken;
//store encrypted token in the database
$courseId = $_SESSION['courseID'];
$userId = $_SESSION['userID'];
//make sure we have the user stored in the user table and in the userCourse table.
$roots = new Roots();
//when we get the user from the LMS it gets stored in the DB.
$roots->getUser($userId);
$dbHelper = new DbHelper();
$role = $dbHelper->getRole('Approver');
$userCourse = UserCourse::firstOrNew(array('user_id' => $userId, 'course_id' => $courseId));
$userCourse->user_id = $userId;
$userCourse->course_id = $courseId;
$userCourse->role = $role->id;
$userCourse->encrypted_token = $encryptedToken;
$userCourse->save();
echo "App has been approved. Please reload this page";
}