#!/usr/bin/env python

###
# Copyright (c) 2002, Jeremiah Fincher
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###

"""
Provides basic functionality for handling RSS/RDF feeds.  Depends on the Alias
module for user-friendliness: instead of:

rsstitles http://slashdot.org/slashdot.rss

It'll make the alias:

alias slashdot rsstitles http://slashdot.org/slashdot.rss

And you'll be able to call the command like this:

slashdot

Commands include:
  rsstitles
"""

from baseplugin import *

import time
import operator

import rssparser

import privmsgs
import callbacks

def configure(onStart, afterConnect, advanced):
    from questions import expect, anything, something, yn
    onStart.append('load RSS')
    if yn('RSS depends on the Alias module.  Is that module loaded?') == 'n':
        if yn('Do you want to load that module now?') == 'y':
            onStart.append('load Alias')
        else:
            print 'You can still use the RSS module, but you won\'t be asked'
            print 'any further questions.'
            return
    prompt = 'Would you like to add an RSS feed?'
    while yn(prompt) == 'y':
        prompt = 'Would you like to add another RSS feed?'
        name = anything('What\'s the name of the website?')
        url = anything('What\'s the URL of the RSS feed?')
        onStart.append('alias %s "rsstitles %s"' % (name, url))
        

class RSS(callbacks.Privmsg):
    threaded = True
    def __init__(self):
        callbacks.Privmsg.__init__(self)
        self.lastRequest = {}
        self.responses = {}

    def rsstitles(self, irc, msg, args):
        """<url>

        Gets the title components of the given RSS feed.
        """
        url = privmsgs.getArgs(args)
        now = time.time()
        if url not in self.lastRequest or now - self.lastRequest[url] > 1800:
            results = rssparser.parse(url)
            headlines = [d['title'] for d in results['items']]
            while reduce(operator.add, map(len, headlines), 0) > 350:
                headlines.pop()
            if not headlines:
                irc.error(msg, 'Error grabbing RSS feed')
                return
            self.responses[url] = ' :: '.join(headlines)
            self.lastRequest[url] = now
        irc.reply(msg, self.responses[url])


Class = RSS

# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: