public function loginSso()
{
\Cas::authenticate();
$api = new ApiController();
$user = $api->_getUserAttributes(\Cas::getCurrentUser());
$_user = User::where('username', $user->username)->first();
if (!$_user) {
$_user = new User();
$_user->email = $user->email;
$_user->nip = $user->nip;
$_user->username = $user->username;
$_user->save();
}
\Auth::login($_user);
return redirect('/');
}