from json import dumps
from pathlib import Path

import os
import time

SKIPLIST = ('_DIRECTORY.json',)
DIRECTORIES_SUPPLIED = ['www/img', 'www/audio', 'www/maps', 'www/data', 'www/Languages']


def legal_file_name(fname: str) -> bool:
    return not (fname in SKIPLIST or fname.startswith('.'))


def create_listing(path: Path, indent: int = 0) -> None:
    files = [n for n in os.listdir(path) if legal_file_name(n)]
    with open(path / '_DIRECTORY.json', 'w') as fp:
        fp.write(dumps(files))
    print(' ' * (indent * 2) + f'>> Wrote listing for {path}')

    for file in files:
        rel_path = path / Path(file)
        if rel_path.is_dir():
            create_listing(rel_path, indent + 1)


for directory in DIRECTORIES_SUPPLIED:
    print(f'>> Beginning of writing listing of the {directory}')
    time.sleep(2)
    create_listing(Path(directory), 1)