#!/usr/bin/python
# -*- coding: UTF-8 -*-
# $Id$

import os
import sys
import cgi
import datetime
import xmpp
import PyRSS2Gen
from jolem_api import JolemAPI

# possible config files to look in
config_files = (
	'jolem-test.xml',
	'jolem.xml',
	os.environ.get('HOME')+'/jolem.xml',
	'/etc/jolem.xml',
	)

class ConfigurationError: pass
class ConnectionError: pass
class AuthorizationError: pass
class NotImplemented: pass

""" Outputs an RSS feed for Jolem """

__version__ = "$Revision$"

class JolemRSS:
	""" Builds RSS feed for specified Jabber ID """
	def __init__(self, jid, config_file):
		self.jid = xmpp.protocol.JID(jid)
		self.api = JolemAPI(config_file)

	def generate(self, entries=30):
		""" Generates the RSS feed for the most recent status updates """

		status_sets = self.api.getRecentStatus(self.jid, entries)
		
		rss_items = []
		for status_set in status_sets:
			rss_items.append(PyRSS2Gen.RSSItem(
				title = status_set[2],
				description = status_set[3],
				guid = PyRSS2Gen.Guid("%s %s" % (self.jid.getStripped(), \
					status_set[0])),
				pubDate = status_set[0],
				author = self.jid.getStripped()))

		rss = PyRSS2Gen.RSS2(
			title = self.jid.getStripped() + " Status",
			link = "http://svn.silfreed.net/jolem",
			description = "XMPP status and message changes",
			lastBuildDate = datetime.datetime.now(),
			items = rss_items,
			)

		return rss

def main():
	""" Main execution starting point for this file """
	# get jabber id to lookup
	url_params = cgi.parse()
	jid = None
	if 'jid' in url_params:
		jid = url_params['jid'][0]

	# find config file from list of possible config files
	config_file = None
	for test_config_file in config_files:
		if os.path.isfile(test_config_file):
			config_file = test_config_file
			break
	
	if config_file is None:
		print "Config file was not found"
		return

	if jid is not None:
		jrss = JolemRSS(jid, config_file)
		rss_feed = jrss.generate()
		# rss_feed.write_xml(open("jolem_rss.xml", "w"))
		rss_feed.write_xml(sys.stdout)

if __name__ == '__main__':
	main()