#!/usr/bin/env python3

import json
import logging
import os
from argparse import ArgumentParser, FileType
from urllib.parse import urlparse

from github import Github


def process_plugins(file, token):
    data = json.load(file)
    file.close()

    github = Github(token)

    for plugin in data:
        if plugin.get('archived'):
            continue

        parsed = urlparse(plugin['url'])
        name = parsed.path.lstrip('/')
        try:
            repo = github.get_repo(name)
        except Exception as e:
            logging.error('Could not find repo %s: %s', name, e)
        else:
            if repo.full_name != name:
                logging.info('Repo %s has moved to %s', repo, repo.full_name)
                print(repo.html_url)
                plugin['url'] = repo.html_url

            if repo.archived:
                plugin['archived'] = repo.archived
            else:
                try:
                    commit = repo.get_commits()[0]
                except IndexError:
                    pass
                else:
                    plugin['last_commit'] = commit.commit.committer.date.isoformat()

    with open(file.name, 'w', encoding='UTF-8') as f:
        json.dump(data, f)


def main():
    parser = ArgumentParser(description='Set Github repository topics based on repository content')
    parser.add_argument('--file', '-f', help='Filename with plugins',
                        type=FileType('r', encoding='UTF-8'))
    parser.add_argument('--verbose', '-v', help='Show debug output', action='store_true')

    args = parser.parse_args()

    log_level = logging.DEBUG if args.verbose else logging.INFO
    logging.basicConfig(level=log_level)

    try:
        token = os.environ['GITHUB_TOKEN']
    except KeyError:
        raise SystemExit('Set the GITHUB_TOKEN environment variable to a valid Github token')

    try:
        process_plugins(args.file, token)
    except KeyboardInterrupt:
        pass


if __name__ == '__main__':
    main()