* database is removed and session token is invalidated. 
 */
$_user_location = 'public';
require_once 'includes/classes/googlecalendar.class.php';
define('AT_INCLUDE_PATH', '../../../include/');
require AT_INCLUDE_PATH . 'vitals.inc.php';
$gcalobj = new GoogleCalendar();
if (isset($_GET['logout'])) {
    //request is for dissociation
    //removed entry from database
    $query = "DELETE FROM %scalendar_google_sync WHERE userid=%d";
    queryDB($query, array(TABLE_PREFIX, $_SESSION['member_id']));
    //invalidate session token
    $gcalobj->logout();
} else {
    //request is for association
    if (!isset($_GET['token'])) {
        //redirect to login page/consent page
        $query = "DELETE FROM %scalendar_google_sync WHERE userid=%d";
        queryDB($query, array(TABLE_PREFIX, $_SESSION['member_id']));
        unset($_SESSION['sessionToken']);
        $authSubUrl = $gcalobj->getAuthSubUrl();
        header('Location:' . $authSubUrl);
    } else {
        //insert session token in the database for future use and close pop-up window
        $client = $gcalobj->getAuthSubHttpClient();
        $query = "INSERT INTO %scalendar_google_sync (token,userid,calids) VALUES ('%s', %d,'')";
        queryDB($query, array(TABLE_PREFIX, $_SESSION['sessionToken'], $_SESSION['member_id']));
        echo '<script>window.opener.location.reload(true);window.close();</script>';
    }
}