#!/usr/bin/env python2.6

from ConfigParser import ConfigParser, NoSectionError, NoOptionError
import os
import sys

import irclib

#####
# on_connect
# handler for when the bot has connected to IRC
#####

def on_connect(connection, event):
    # user modes
    try:
        usermode = config.get('IRC', 'usermode')
        connection.mode(nick, usermode)
    except NoOptionError: pass

    # join the specified channel
    # TODO: support multiple
    if irclib.is_channel(channel):
        connection.join(channel)
#####
# on_privmsg
# private messages to the bot
#####

def on_privmsg(connection, event):
    nick = event.source().split('!')[0]
    userhost = event.source().split('!')[1]
    what = event.arguments()[0]
    admin_unlocked = False

    try:
        if userhost == config.get('admin', 'userhost'):
            admin_unlocked = True
    except NoOptionError: pass

    if what.split(' ')[0] == 'join' and admin_unlocked:
        connection.join(what.split(' ')[1])
    elif what.split(' ')[0] == 'part' and admin_unlocked:
        connection.part(what.split(' ')[1], ' '.join(what.split(' ')[2:]))

#####
# init
#####

# read config file

config = ConfigParser({'debug': 'false'})
config.read([os.path.expanduser('~/.dr.botzo.cfg'), 'dr.botzo.cfg'])

# load necessary options
try:
    # load connection info
    server  = config.get('IRC', 'server')
    port    = config.getint('IRC', 'port')
    channel = config.get('IRC', 'channel')
    nick    = config.get('IRC', 'nick')
    ircname = config.get('IRC', 'name')
except NoSectionError as e:
    sys.exit("Aborted due to error with necessary configuration: " + str(e))
except NoOptionError as e:
    sys.exit("Aborted due to error with necessary configuration: " + str(e))

# load additional options
irclib.DEBUG = config.getboolean('IRC', 'debug')

# start up the IRC bot

# create IRC and server objects and connect
irc = irclib.IRC()
server = irc.server().connect(server, port, nick, ircname)

# install handlers
server.add_global_handler("welcome", on_connect)
server.add_global_handler('privmsg', on_privmsg)

# loop forever
irc.process_forever()

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