def update_metadata(session, path=DATA_PATH):
    """Update metadata files (only ladders right now)."""
    with open(os.path.join(path, 'games.json')) as handle:
        games = json.loads(handle.read())
     
    for key, data in get_metadata(session, games).items():
        with open(os.path.join(path, '{}.json'.format(key)), 'w') as handle:
           handle.write(json.dumps(data, indent=2))