internationalize Hugo content files

internationalize.py

import os
from os import path
import sys
import frontmatter
import re
from datetime import datetime


def process_dir(dirpath):
    for fname in os.listdir(dirpath):
        fpath = path.join(dirpath, fname)
        if not path.isfile(fpath):
            continue

        add_alias(fpath)
        fpath = rename_for_lang(fpath, 'ja')


def add_alias(mdpath):
    post = frontmatter.load(mdpath)

    if type(post['date']) == str:
        post['date'] = datetime.fromisoformat(post['date'])

    # blog: "/:section/:year-:month-:day/:slug/"
    dates = post['date'].strftime('%Y-%m-%d')
    alias = f'/blog/{dates}/{post["slug"]}/'

    if 'aliases' in post:
        post['aliases'].append(alias)
    else:
        post['aliases'] = [alias]

    with open(mdpath, 'w') as f:
        f.write(frontmatter.dumps(post))


def rename_for_lang(mdpath, lang):
    newpath = re.sub(r'(content/blog/.*)\.md', '\\1/index.ja.md', mdpath)
    os.renames(mdpath, newpath)
    return newpath


def main():
    cwd = path.dirname(__file__)
    blog_content_dir =  path.join(cwd, 'content/blog')

    process_dir(blog_content_dir)


if __name__ == '__main__':
    main()

Pipfile

[[source]]
name = "pypi"
url = "https://pypi.org/simple"
verify_ssl = true

[dev-packages]

[packages]
python-frontmatter = "*"

[requires]
python_version = "3.7"