# -*- coding: utf8 -*-
from vkclient.vkbot import *
import xml.etree.ElementTree as ET
import urllib
import rfc822
import calendar
import time

def load_rss(url):
    u = urllib.urlopen(url)
    data = u.read()
    root = ET.fromstring(data)
    return root

vk = VKBot(5.9, '***')
r = vk.api('users.get')
u = r[0]
print u['first_name'] + ' ' + u['last_name']

last_timestamp = 0
root = load_rss('http://ria.ru/export/rss2/science/index.xml')
items = root.findall('channel/item')
for item in reversed(items):
    time_tuple = rfc822.parsedate_tz(item.find('pubDate').text)
    timestamp = calendar.timegm(time_tuple)
    print timestamp
    if timestamp < last_timestamp:
        continue
    last_timestamp = timestamp
    # url = item.find('link').text
    title = item.find('title').text
    desc = item.find('description').text
    vk.api('wall.post', {'message': title + '\n\n' + desc})
    time.sleep(3)