#!/usr/bin/env python
# Location Bot
#
# Douglas Thrift
#
# $Id$

from ConfigParser import NoOptionError, SafeConfigParser
import geojson
import getpass
import ircbot
import irclib
import os
import sys
import threading
import urllib, urllib2
import warnings

class LocationBot(ircbot.SingleServerIRCBot):
	def __init__(self):
		config = SafeConfigParser({'hostname': ''})

		config.read('locationbot.ini')

		try:
			nick = config.sections()[0]
		except IndexError:
			sys.exit('No nick configured')

		servers = []

		try:
			for server in config.get(nick, 'servers').split():
				server = server.split(':', 2)

				if len(server) == 1:
					servers.append((server[0], 6667))
				else:
					host = server[0]
					port = int(server[1])
					ssl = server[1].startswith('+')

					if len(server) == 3:
						servers.append((host, port, ssl, server[2]))
					else:
						servers.append((host, port, ssl))

			self.__admins = config.get(nick, 'admins').split()
			self.__channels = config.get(nick, 'channels').split()
			self.__hostname = config.get(nick, 'hostname')
		except NoOptionError, error:
			sys.exit(error)

		self.__locations_lock = threading.Lock()
		self.__locations = []

		ircbot.SingleServerIRCBot.__init__(self, servers, nick, 'Location Bot')

	def __admin(self, nick):
		if isinstance(nick, irclib.Event):
			nick = nick.source()

		for admin in self.__admins:
			if irclib.mask_matches(nick, admin):
				return True

		return False

	def __do_latitude(self):
		#with self.__locations_lock:
		#	self.__locations.append(('douglaswth', 'Isla Vista, CA, USA'))

		#try:
		#	url = 'http://www.google.com/latitude/apps/badge/api?' + urllib.urlencode({'user': 0, 'type': 'json'})
		#	response = urllib2.urlopen(url)
		#	geo = geojson.load(response, object_hook = geojson.GeoJSON.to_instance)

		#	print geo.features[0].properties['reverseGeocode']
		#except urllib2.URLError, error:
		#	print error

		self.__latitude = threading.Timer(5 * 60, self.__do_latitude)

		self.__latitude.start()

	def __help(self, connection, nick, admin, arguments):
		connection.privmsg(nick, 'Command     Arguments        Description')

		commands = [
			('help', '', 'show this help message'),
			('login', 'user secret', 'login as user with secret'),
			('register', 'user secret', 'register as user with secret'),
			('status', '[user]', 'show where everybody or a user is'),
		]

		if True:
			commands += [
				('latitude', '[id]', 'shortcut for !set latitude [id]'),
				('set', '[key [value]]', 'display or set variables'),
				('unset', 'key', 'unset a variable'),
			]

		if admin:
			commands += [
				('restart', '', 'quit and join running more up to date code'),
				('say', 'channel message', 'say message in channel'),
			]

		commands.sort()

		for command in commands:
			connection.privmsg(nick, '!%-10s %-16s %s' % command)

	def __restart(self, connection):
		connection.disconnect('Restarting')
		os.execvp(sys.argv[0], sys.argv)

	def __say(self, connection, nick, arguments):
		try:
			channel, message = arguments.split(None, 1)

			connection.privmsg(channel, message)
		except ValueError:
			self.__help(connection, nick, True, 'say')

	def __unknown(self, connection, nick, command):
		connection.privmsg(nick, 'unknown command (%s); try "!help"' % command)

	def _connect(self):
		password = None

		if len(self.server_list[0]) != 2:
			ssl = self.server_list[0][2]

		if len(self.server_list[0]) == 4:
			password = self.server_list[0][3]

		try:
			with warnings.catch_warnings():
				warnings.filterwarnings('ignore', r'socket\.ssl\(\) is deprecated\.  Use ssl\.wrap_socket\(\) instead\.', DeprecationWarning)
				self.connect(self.server_list[0][0], self.server_list[0][1], self._nickname, password, getpass.getuser(), self._realname, localaddress = self.__hostname, ssl = ssl)
		except irclib.ServerConnectionError:
			pass

	def get_version(self):
		return 'locationbot ' + sys.platform

	def on_nicknameinuse(self, connection, event):
		connection.nick(connection.get_nickname() + '_')

	def on_privmsg(self, connection, event):
		nick = irclib.nm_to_n(event.source())
		admin = self.__admin(event)

		if not admin:
			ok = False

			for channel in self.channels.values():
				if channel.has_user(nick):
					ok = True

					break

			if not ok:
				return

		try:
			command, arguments = event.arguments()[0].split(None, 1)
		except ValueError:
			command = event.arguments()[0].strip()
			arguments = ''

		if command.startswith('!'):
			command = command[1:]

			if command == 'help':
				self.__help(connection, nick, admin, arguments)
			elif admin:
				if command == 'restart':
					self.__restart(connection)
				elif command == 'say':
					self.__say(connection, nick, arguments)
				else:
					self.__unknown(connection, nick, command)
			else:
				self.__unknown(connection, nick, command)
		elif event.eventtype() == 'privmsg':
			self.__unknown(connection, nick, command)

	def on_welcome(self, connection, event):
		for channel in self.__channels:
			connection.join(channel)

	def start(self):
		self.__latitude = threading.Thread(None, self.__do_latitude)
		self.__latitude.daemon = True

		self.__latitude.start()
		self._connect()

		while True:
			self.ircobj.process_once(0.2)

			if self.__locations_lock.acquire(False):
				if self.__locations and sorted(self.__channels) == sorted(self.channels.keys()):
					for user, location in self.__locations:
						for channel in self.__channels:
							self.connection.notice(channel, '%s is in %s' % (user, location))

					self.__locations = []

				self.__locations_lock.release()

if __name__ == '__main__':
	locationbot = LocationBot()

	try:
		locationbot.start()
	except KeyboardInterrupt:
		locationbot.connection.disconnect('Oh no!')