info = {
	'author': 'Jon Bergli Heier',
	'title': 'WolframAlpha',
	'description': 'WolframAlpha',
}

import urllib, urllib2, re
from lxml.etree import ElementTree

whitespace_re = re.compile(r'\s+')

class Module(object):
	config_section = 'module/wolframalpha'

	def __init__(self, bot):
		self.irc = bot
		if self.irc:
			self.irc.register_keyword('!wa', self)

	def keyword(self, nick, channel, kw, msg):
		target = channel if not channel == self.irc.nickname else nick.split('!')[0]
		if not len(msg.strip()):
			self.irc.msg(target, 'Usage: !wa query')
			return
		query = {
			'appid': config.get(self.config_section, 'api_key'),
			'format': 'plaintext',
			'input': msg,
		}
		if config.has_option(self.config_section, 'location'):
			query['location'] = config.get(self.config_section, 'location')
		u = urllib2.urlopen('http://api.wolframalpha.com/v2/query?%s' % urllib.urlencode(query))
		xmldoc = ElementTree()
		xmldoc.parse(u)
		xml = xmldoc.getroot()
		if xml.attrib['success'] != 'true':
			# TODO: check didyoumean tags
			self.irc.msg(target, 'No result.')
			return

		results = []
		for pod in xml.findall('pod'):
			#if pod.attrib['id'] == 'Result':
			result = pod.find('subpod/plaintext')
			if result is not None and result.text is not None:
				text = result.text
				text = whitespace_re.sub(' ', text)
				results.append('\002%s\002: %s' % (pod.attrib['title'].encode('utf-8'), text.encode('utf-8')))
		if len(results):
			self.irc.msg(target, ' '.join(results))
		else:
			self.irc.msg(target, 'Something failed.')