$client->setClientSecret($client_secret);
$client->setRedirectUri($redirect_uri);
$client->addScope("https://www.googleapis.com/auth/drive");
$service = new Postman_Google_Service_Drive($client);
if (isset($_REQUEST['logout'])) {
unset($_SESSION['upload_token ']);
}
if (isset($_GET['code'])) {
$client->authenticate($_GET['code']);
$_SESSION['upload_token'] = $client->getAccessToken();
$redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}
if (isset($_SESSION['upload_token']) && $_SESSION['upload_token']) {
$client->setAccessToken($_SESSION['upload_token']);
if ($client->isAccessTokenExpired()) {
unset($_SESSION['upload_token']);
}
} else {
$authUrl = $client->createAuthUrl();
}
/************************************************
If we're signed in then lets try to upload our
file.
************************************************/
if ($client->getAccessToken()) {
$file = new Postman_Google_Service_Drive_DriveFile();
$file->title = "Big File";
$chunkSizeBytes = 1 * 1024 * 1024;
// Call the API with the media upload, defer so it doesn't immediately return.
$client->setDefer(true);