import sys
import html
import shlex
from urllib.parse import urlparse, urlunparse
import feedparser

with open(sys.argv[1]) as file, open(sys.argv[2], 'w+') as out:
    for i in file:
        inp = shlex.split(i, comments=True)
        if 'blog' in inp[1:]:
            try:
                d = feedparser.parse(inp[0])
            except Exception as e:
                print(inp[0], 'raised', e, file=sys.stderr)
                continue
            feedurl = d['href']
            if not d['entries']:
                print(feedurl, 'has no entries, skipping', file=sys.stderr)
                continue
            if 'links' in d['feed']:
                url = next(filter(lambda i: i['type'] == 'text/html', d['feed']['links']))['href']
            else:
                url = list(urlparse(feedurl))
                url[2] = ''
                url = urlunparse(url)
                print(f'No mention of main page on {feedurl}, please see {url} or enter main page url: ', file=sys.stderr, end='', flush=True)
                url = input().strip() or url
            desc = d['feed'].get('description')
            text = f'<li><b><a href="{html.escape(url)}">{html.escape(d["feed"]["title"])}</a> (<a href="{html.escape(feedurl)}">feed</a>)'
            if desc := d['feed'].get('description'):
                text += f':</b> {html.escape(desc)}'
            else:
                text += '</b>'
            text += '</li>\n'
            print(text, end='')
            out.write(text)