"""Transfer YouTube subscriptions to FreshRSS."""

from youtube import YouTube
from freshrss import FreshRss
from helpers import read_config_file, determine_additions, determine_deletions


def main():
    """Entry point."""
    config = read_config_file()

    youtube = YouTube(
        config['youtube_api_key'],
        config['youtube_channel_id'],
        config['rss_bridge_url']
    )
    subscriptions = youtube.get_subscriptions()
    sub_urls, parsed_subs = youtube.parse_subscriptions(subscriptions)
    print(f"Found {len(subscriptions)} subscriptions on YouTube.")

    freshrss = FreshRss(
        config['freshrss_url'],
        config['freshrss_username'],
        config['freshrss_api_password'],
    )
    freshrss.get_auth_token()
    feeds = freshrss.get_feeds()
    active_feeds = freshrss.parse_feeds_urls(feeds)
    print(f"Found {len(active_feeds)} YouTube feeds on FreshRSS.")

    additions = determine_additions(parsed_subs, active_feeds)
    print(f"{len(additions)} feeds will be added to FreshRSS.")

    deletions = determine_deletions(active_feeds, sub_urls)
    print(f"{len(deletions)} feeds will be deleted from FreshRSS.")

    for addition in additions:
        freshrss.add_feed(addition['title'], addition['url'])

    if len(additions) > 0:
        print("Added missing feeds to FreshRSS.")

    for deletion in deletions:
        freshrss.remove_feed(deletion)

    if len(deletions) > 0:
        print("Removed missing YouTube subscriptions from FreshRSS.")


if __name__ == "__main__":
    main()