create event on google calendar throw my website

[mohammad al shareif]

am really stuck and need help..

i create an application that request a permission to manage user calendars 

this the redirect page when user accept my permission

///----------------------

require_once 'src/Google_Client.php';

require_once 'src/contrib/Google_CalendarService.php';

require_once 'src/contrib/Google_Oauth2Service.php';

require_once 'src/contrib/Google_AnalyticsService.php';

session_start();

$client = new Google_Client();

$client->setApplicationName("Google Calendar PHP Starter Application");

// Visit https://code.google.com/apis/console?api=calendar to generate your

// client id, client secret, and to register your redirect uri.

// $client->setClientId('insert_your_oauth2_client_id');

// $client->setClientSecret('insert_your_oauth2_client_secret');

// $client->setRedirectUri('insert_your_oauth2_redirect_uri');

// $client->setDeveloperKey('insert_your_developer_key');

$oauth2 = new Google_Oauth2Service($client);

$cal = new Google_CalendarService($client);

if (isset($_GET['logout'])) {

  unset($_SESSION['token']);

}

if (isset($_GET['code'])) {

  $client->authenticate($_GET['code']);

  $_SESSION['token'] = $client->getAccessToken();

  header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);

}

if (isset($_SESSION['token'])) {

  $client->setAccessToken($_SESSION['token']);

}

if ($client->getAccessToken()) {

  $calList = $cal->calendarList->listCalendarList();

  print "<h1>Calendar List</h1><pre>" . print_r($calList, true) . "</pre>";

$_SESSION['token'] = $client->getAccessToken();

} else {

  $authUrl = $client->createAuthUrl();

  $link= "<a class='login' href='$authUrl'>Connect Me!</a>";

}

if (isset($_GET['code'])) {

  $client->authenticate($_GET['code']);

  $_SESSION['token'] = $client->getAccessToken();

  $redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];

  header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));

  return;

}

if (isset($_SESSION['token'])) {

 $client->setAccessToken($_SESSION['token']);

}

if (isset($_REQUEST['logout'])) {

  unset($_SESSION['token']);

  $client->revokeToken();

}

if ($client->getAccessToken()) {

  $user = $oauth2->userinfo->get();

  // These fields are currently filtered through the PHP sanitize filters.

  // See http://www.php.net/manual/en/filter.filters.sanitize.php

  $email = filter_var($user['email'], FILTER_SANITIZE_EMAIL);

  $img = filter_var($user['picture'], FILTER_VALIDATE_URL);

  $personMarkup = "$email<div><img src='$img?sz=50'></div>";

print_r($user);

  // The access token may have been updated lazily.

  $_SESSION['token'] = $client->getAccessToken();

} else {

  $authUrl = $client->createAuthUrl();

}

//////------------------------------------------------- 

this code give me the calendar list and user profile and its 100% true

but when i add the following 

$event = new Event();

$start = new EventDateTime();

$start->setDateTime('2012-11-02T10:25:00.000-07:00');

$event->setStart($start);

$end = new EventDateTime();

$end->setDateTime('2012-11-03T10:25:00.000-07:00');

$event->end = $end;

$attendee1 = new EventAttendee();

$attendee1->email = 'mymail...@gmail.com';

$attendees = array($attendee1);

$event->attendees = $attendees;

$createdEvent = $cal->events->insert('mymail...@gmail.com', $event);

//----------------------------- its giv me the following

Fatal error: Class 'Event' not found in /home/roznamti/public_html/new_site/google-api-php-client/google_permission.php on line 91

please what to do..............................

[mohammad al shareif]

and how to get the calendar id for the authenticated user?????

$createdEvent = $cal->events->insert('mymailacco...@gmail.com', $event);