Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
require_once '../google-api-php-client/src/Google/autoload.php';
include_once 'Auth.php';
session_start();
$filename = "/afs/umich.edu/group/m/mafstool/Private/refresh.csv";
$client = new Google_Client();
$client->setAuthConfigFile('../../Private/drive_credentials.json');
$client->setRedirectUri('https://' . $_SERVER['HTTP_HOST'] . '/afsmigrator/drive/drive_auth.php');
$client->addScope(Google_Service_Drive::DRIVE);
$client->setAccessType('offline');
$client->setPrompt('select_account');
//If user denies authorization
if (isset($_GET['error'])) {
//Redirect user to error page
$_SESSION['error'] = "You must allow this tool to access Drive in one of your gmail accounts for this tool to work. " . "Please <a href='Cloud.php'>try again</a>.";
header('Location: ' . 'https://' . $_SERVER['HTTP_HOST'] . '/afsmigrator/error_page.php');
} else {
if (!isset($_GET['code'])) {
//Create and send auth url
$auth_url = $client->createAuthUrl();
header('Location: ' . filter_var($auth_url, FILTER_SANITIZE_URL));
} else {
try {
//Trade authorization code for access and refresh token
$client->authenticate($_GET['code']);
//Save refresh token to .csv
