"""If metadata doesn't have version information, adds it
"""
from __future__ import print_function

import glob
import os
import yaml

from medleydb import METADATA_PATH


def add_version(fpath):
    with open(fpath, 'r') as fhandle:
        data = yaml.load(fhandle)

    if 'version' not in data.keys():
        data['version'] = 1.2
        with open(fpath, 'w') as fhandle:
            yaml.dump(data, fhandle, indent=2, default_flow_style=False)


def remove_release_date(fpath):
    with open(fpath, 'r') as fhandle:
        data = yaml.load(fhandle)

    if 'release date' in data.keys():
        data.pop('release date', None)
        with open(fpath, 'w') as fhandle:
            yaml.dump(data, fhandle, indent=2, default_flow_style=False)


def main():
    """Loops over all metadata files and adds version information
    """
    metadata_files = glob.glob(os.path.join(METADATA_PATH, '*.yaml'))
    for fpath in metadata_files:
        add_version(fpath)
        remove_release_date(fpath)


if __name__ == "__main__":
    main()