private function _init_service($access_token)
 {
     $client = new \W3TCG_Google_Client();
     $client->setClientId($this->_client_id);
     $client->setAccessToken($access_token);
     $this->_service = new \W3TCG_Google_Service_Drive($client);
 }
 function render()
 {
     $client_id = $_GET['oa_client_id'];
     $refresh_token = $_GET['oa_refresh_token'];
     $token_array = array('access_token' => $_GET['oa_access_token'], 'token_type' => $_GET['oa_token_type'], 'expires_in' => $_GET['oa_expires_in'], 'created' => $_GET['oa_created']);
     $access_token = json_encode($token_array);
     $client = new \W3TCG_Google_Client();
     $client->setClientId($client_id);
     $client->setAccessToken($access_token);
     $service = new \W3TCG_Google_Service_Drive($client);
     $items = $service->files->listFiles(array('q' => "mimeType = 'application/vnd.google-apps.folder'"));
     $folders = array();
     foreach ($items as $item) {
         if (count($item->parents) > 0 && $item->parents[0]->isRoot) {
             $folders[] = $item;
         }
     }
     include W3TC_DIR . '/Cdn_GoogleDrive_Popup_AuthReturn_View.php';
 }
 function w3tc_cdn_google_drive_auth_set()
 {
     // thanks wp core for wp_magic_quotes hell
     $client_id = stripslashes($_POST['client_id']);
     $access_token = stripslashes($_POST['access_token']);
     $refresh_token = stripslashes($_POST['refresh_token']);
     $client = new \W3TCG_Google_Client();
     $client->setClientId($client_id);
     $client->setAccessToken($access_token);
     //
     // get folder details
     //
     $service = new \W3TCG_Google_Service_Drive($client);
     if (empty($_POST['folder'])) {
         $file = new \W3TCG_Google_Service_Drive_DriveFile(array('title' => $_POST['folder_new'], 'mimeType' => 'application/vnd.google-apps.folder'));
         $created_file = $service->files->insert($file);
         $used_folder_id = $created_file->id;
     } else {
         $used_folder_id = $_POST['folder'];
     }
     $permission = new \W3TCG_Google_Service_Drive_Permission();
     $permission->setValue('');
     $permission->setType('anyone');
     $permission->setRole('reader');
     $service->permissions->insert($used_folder_id, $permission);
     $used_folder = $service->files->get($used_folder_id);
     //
     // save new configuration
     //
     delete_transient('w3tc_cdn_google_drive_folder_ids');
     $this->_config->set('cdn.google_drive.client_id', $client_id);
     $this->_config->set('cdn.google_drive.refresh_token', $refresh_token);
     $this->_config->set('cdn.google_drive.folder.id', $used_folder->id);
     $this->_config->set('cdn.google_drive.folder.title', $used_folder->title);
     $this->_config->set('cdn.google_drive.folder.url', $used_folder->webViewLink);
     $this->_config->save();
     $cs = Dispatcher::config_state();
     $cs->set('cdn.google_drive.access_token', $access_token);
     $cs->save();
     wp_redirect('admin.php?page=w3tc_cdn', false);
 }