# Author: Ben Wright
# Date: 5th August 2010
# License: MIT
# Description: A simple rss to twitter rss parser.

import feedparser
import twitter
import sys
import time

class RSSParser:
  def __init__(self, feed):
    self.feed = feed
    data = feedparser.parse(self.feed)
    self.posts = [(e.title, e.link) for e in data.entries]
    self.update()
  def posts(self):
    return self.posts
  def new_posts(self):
    return self.new_posts
  def update(self):
    print '[Parsing] ' + self.feed
    data = feedparser.parse(self.feed)
    links = [(e.title, e.link) for e in data.entries]
    self.new_posts = list(set(self.posts)-set(links))+list(set(links)-set(self.posts))
    self.posts = links
    print '[Parsing Done]'


class TwitterBot:
  def __init__(self, username, password):
    self.api = twitter.Api(username=username, password=password)
  def post(self, message):
    print '[Tweeting] ' + message
    self.api.PostUpdate(message)
    print '[Sleeping] 2 Minutes'
    time.sleep(2*60)

def main():
  pool = [RSSParser(line[:-1]) for line in open('pool.txt', 'r')]
  twitter_bot = TwitterBot('username', 'password')
  while True:
    for feed in pool:
      feed.update()
      for post in feed.new_posts():
        twitter_bot.post(post[0] + ' ' + post[1])
    print "[Sleeping] 15 Minutes"
    time.sleep(15*60)

if __name__ == "__main__":
  main()