# -*- coding: utf8 -*-

# Filename:     google_api_test.py
# Desc:         https://developers.google.com/maps/documentation/directions/#RequestParameters
# First edited: 10-04-2012 12:40
# Last edited:  10-04-2012 13:11

import urllib
import urllib2
import lxml.etree

# "http://maps.googleapis.com/maps/api/directions/xml?origin=miami&destination=atlanta&sensor=false"

# "http://maps.googleapis.com/maps/api/directions/json?origin=Aalborg&destination=Aarhus&sensor=false"

def read_xml(s):
    return lxml.etree.fromstring(s)

def directions(origin="", destination=""):
    if len(origin) > 1 and len(destination) > 1:
        urldata = {"origin":      origin,
                   "destination": destination,
                   "language":    "da-DK",
                   "sensor":      "false"}
        url = "http://maps.googleapis.com/maps/api/directions/xml"
        data = urllib.urlencode(urldata)
        url = url + "?" + data
        content = urllib2.urlopen(url).read()
        content = read_xml(content)
        distances = content.xpath('//distance/value/text()')
        distances = map(int, distances)
        print distances[-1]

def main():
    directions(origin="Vendelparken 30, Sulsted", destination="Badehusvej 13, Aalborg")


if __name__ == '__main__':
    main()