store tmp file and move to location once done

pandora_client/server.py

@@ -111,9 +111,11 @@ class Server(Resource):
             oshash = parts[-1]
             if len(oshash) == 16:
                 path = self.media_path(oshash)
+                tmp = path + '.tmp.webm'
                 ox.makedirs(os.path.dirname(path))
-                with open(path, 'wb') as f:
+                with open(tmp, 'wb') as f:
                     shutil.copyfileobj(request.content, f)
+                shutil.move(tmp, path)
                 self.update_status(oshash, 'done')
                 self.upload.put(oshash)
                 return self.render_json(request, {