Route::get('authorize', array('before' => 'check-authorization-params|auth', function()
{
    // get the data from the check-authorization-params filter
    $params = Session::get('authorize-params');

    // get the user id
    $params['user_id'] = Auth::user()->id;

    // check if user already has authorized client for scopes
    $scopesAuthorized = Auth::user()->scopesAuthorizedByClientId($params['client_id']);

    $scopesNotAuthorized = array_diff(array_fetch($params['scopes'], 'scope'), $scopesAuthorized);

    if(sizeof($scopesNotAuthorized) == 0)
    {
        // all requested scopes have already been approved by the user -> skip the authorization dialog
    
        $code = AuthorizationServer::newAuthorizeRequest('user', $params['user_id'], $params);

        Session::forget('authorize-params');

        return Redirect::to(AuthorizationServer::makeRedirectWithCode($code, $params));
    }

    // display the authorization form
    return View::make('oauth.authorize', array('params' => $params));
}));