Google Drive support

index.html

@@ -15,6 +15,7 @@
 <script type="text/javascript">
 	var CLIENT_ID = '241271498917-jpto9lls9fqnem1e4h6ppds9uob8rpvu.apps.googleusercontent.com';
 	var SCOPES = 'https://www.googleapis.com/auth/drive.install';
+	var driveUpload = false;
 
 	/**
 	 * Called when the client library is loaded to start the auth flow.
@@ -39,6 +40,9 @@
 	function handleAuthResult(authResult) {
 		 if (authResult && !authResult.error) {
 			 $("#drive-link").hide();
+			 gapi.client.load('drive', 'v2', function() {
+				 driveUpload = true;
+			 });
 		 } else {
 			 $("#drive-link").click(function() {
 	                gapi.auth.authorize({ 'client_id' : CLIENT_ID,
@@ -67,6 +71,7 @@
 	 * @param {Function} callback Function to call when the request is complete.
 	 */
 	function insertFile(fileData, callback) {
+		 if(driveUpload) {
 			var request = gapi.client.request({
 				'path' : '/upload/drive/v2/files',
 				'method' : 'POST',
@@ -79,6 +84,7 @@
 				};
 			}
 			request.execute(callback);
+		 }
 	}
 </script>
 <script type="text/javascript"