#!/usr/bin/env python3

from urllib.request import urlopen, Request
from datetime import datetime
from bs4 import BeautifulSoup
import sys

def _format_date(dt):
    """convert a datetime into an RFC 822 formatted date
    Input date must be in GMT.
    Stolen from PyRSS2Gen.
    """
    # Looks like:
    #   Sat, 07 Sep 2002 00:00:01 GMT
    # Can't use strftime because that's locale dependent
    #
    # Isn't there a standard way to do this for Python?  The
    # rfc822 and email.Utils modules assume a timestamp.  The
    # following is based on the rfc822 module.
    return "%s, %02d %s %04d %02d:%02d:%02d GMT" % (
            ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"][dt.weekday()],
            dt.day,
            ["Jan", "Feb", "Mar", "Apr", "May", "Jun",
             "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"][dt.month-1],
            dt.year, dt.hour, dt.minute, dt.second)

def netto(store_id):
    url = 'https://www.netto-online.de/ueber-netto/Online-Prospekte.chtm/' + str(store_id)
    res = urlopen(Request(url))
    soup = BeautifulSoup(res, features="html.parser")

    # messages = soup.find_all('div', attrs={'class': 'tgme_widget_message_wrap'})
    message = soup.find('a', attrs={'class': 'flipbook_pdf_flipbook'})

    url = message['href'].split('?')[0]
    year = str(datetime.now().year)
    title = url[ url.find(year) : url.find(year) + 7 ]

    return title, url

def main(store_id = 9110):
    url = 'https://www.netto-online.de/ueber-netto/Online-Prospekte.chtm/' + str(store_id)

    print("""<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
  <channel>
    <title>Netto Angebote """ + str(store_id) + """</title>
    <link>""" + url + """</link>
    <description>PDF der neuen Netto Angebote für den Laden um die Ecke.</description>
    <lastBuildDate>""" + _format_date(datetime.now()) + """</lastBuildDate>""")

    title, link = netto(url)
    print('    <item>')
    print('      <title><![CDATA[Angebote für ' + title + ']]></title>')
    print('      <link>' + link + '</link>')
    # print('      <description><![CDATA[' + description + ']]></description>')
    # print('      <pubDate>' + date + '</pubDate>')
    # print('      <media:content url="' + thumbnail + b'" type="image/jpeg" />')
    print('    </item>')

    print('  </channel>')
    print('</rss>')

if __name__ == "__main__":
    # if len(sys.argv) != 2:
    #     print('Usage:', sys.argv[0], '<foobar>')
    #     sys.exit(1)
    # main(sys.argv[1])
    main()