Update Weather script to support "natural language" replies, specify temperature format

gistfile1.coffee

robot.respond /weather(?: me|for|in)?\s(.*)/, (msg) ->
  query msg, (body, err) ->
    return msg.send err if err

    city = body.getElementsByTagName("city")[0]
    return msg.send "Sorry, but you didn't specify a location." if not city or not city.getAttribute
      
    city = city.getAttribute("data")
    currentCondition = body.getElementsByTagName("current_conditions")[0].getAttribute("data")
    conditions = body.getElementsByTagName("current_conditions")[0].getElementsByTagName("condition")[0].getAttribute("data")
    humidity = body.getElementsByTagName("current_conditions")[0].getElementsByTagName("humidity")[0].getAttribute("data").split(' ')[1]

    if env.HUBOT_WEATHER_CELSIUS
      temp = body.getElementsByTagName("current_conditions")[0].getElementsByTagName("temp_c")[0].getAttribute("data") + "ºC"
    else
      temp = body.getElementsByTagName("current_conditions")[0].getElementsByTagName("temp_f")[0].getAttribute("data") + "ºF"
      
    msg.send "Currently in #{city} it is #{conditions} and #{temp} with a humidity of #{humidity}.\n"

getDom = (xml) ->
  body = jsdom.jsdom(xml)
  throw Error("No XML data returned.") if body.getElementsByTagName("weather")[0].childNodes.length == 0
  body

convertTempToCelsius = (f) ->
  ((5 / 9) * (f - 32)).toFixed 0

query = (msg, cb) ->
  location = msg.match[1]
  msg.http("http://www.google.com/ig/api")
    .query(weather: location)
    .get() (err, res, body) ->
      try
        body = getDom body
      catch err
        err = "Could not fetch weather data."
      cb(body, err)