$client = new Google_Client();
$client->setClientId(CLIENT_ID);
$client->setClientSecret(CLIENT_SECRET);
$client->setRedirectUri(REDIRECT_URL);
$client->setApplicationName(APP_NAME);
$client->setScopes(array(ANALYTICS_SCOPE));
// Magic. Returns objects from the Analytics Service
// instead of associative arrays.
$client->setUseObjects(true);
// Build a new storage object to handle and store tokens in sessions.
// Create a new storage object to persist the tokens across sessions.
$storage = new apiSessionStorage();
$authHelper = new AuthHelper($client, $storage, THIS_PAGE);
// Main controller logic.
if ($_GET['action'] == 'revoke') {
$authHelper->revokeToken();
} else {
if ($_GET['action'] == 'auth' || $_GET['code']) {
$authHelper->authenticate();
} else {
$authHelper->setTokenFromStorage();
if ($authHelper->isAuthorized()) {
$analytics = new Google_AnalyticsService($client);
if ($_GET['demo'] == 'hello') {
// Hello Analytics API Demo.
require_once 'helloAnalyticsApi.php';
$demo = new HelloAnalyticsApi($analytics);
$htmlOutput = $demo->getHtmlOutput();
$demoError = $demo->getError();
} else {
if ($_GET['demo'] == 'mgmt') {
