#!/usr/bin/python

import time
import feedparser
import sys
import re

url = sys.argv[1]

last=time.time()

if len(sys.argv)>2:
    last=0

while 1:
    feed = feedparser.parse(url)
    if len(feed['entries']) == 0:
        print('error', flush=True, file=sys.stderr)
        time.sleep(60)
        continue
    for i in range(0,len(feed['entries']))[::-1]:
        published = int(time.mktime(feed['entries'][i]['published_parsed']))
        if published > last:
            print(
                feed['entries'][i]['title'],
                '--',
                feed['entries'][i]['author']+
                ': '+
                re.sub('<[^<]+?>', '',
                 re.sub('<img .*?alt="(\S+)".*? />', '\\1',
                  feed['entries'][i]['summary'])
                ).replace('\n',' ; ').replace('&quot;','"')[:250].split('.',1)[0]+'...',
                feed['entries'][i]['link'],
                flush=True
            )
    last = int(time.mktime(feed['updated_parsed']))
    time.sleep(900)