# Upload the appointments or events for a day to Google Calendar
# based on the example from Jon Udell:
# http://weblog.infoworld.com/udell/2006/06/13.html
#
# Replace USERNAME with your username (ie. testuser@gmail.com)
# Replace PASSWORD with your password
# Replace NAME with your name (ie. "Mike Rowehl")
#

import httplib, urllib, urlparse
import calendar
from time import *

def GoogleAuth( u, p):
    params = urllib.urlencode({'Email':u,'Passwd':p,'service':'cl','source':'mikerowehl-s60gcal-0.1'})
    headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/plain"}
    conn = httplib.HTTPSConnection("www.google.com")
    conn.request("POST", "/accounts/ClientLogin", params, headers)
    response = conn.getresponse()
    body = response.read()
    conn.close()
    vals = dict([x.split('=') for x in body.splitlines()]) 
    return vals['Auth']

def SessionUrl( auth, url ):
    headers = {"Accept": "text/plain", 'Authorization': 'GoogleLogin auth='+auth}
    conn = httplib.HTTPConnection("www.google.com")
    conn.request("GET", url, None, headers)
    response = conn.getresponse()
    sessionurl = response.getheader('Location')
    parts = urlparse.urlsplit(sessionurl)
    return parts[2] + '?' + parts[3]

def dictFromS60Event(event):
    title = event.content
    descr = ''
    where = event.location
    start = strftime('%Y-%m-%dT%H:%M:%SZ', gmtime(event.start_time))
    end = strftime('%Y-%m-%dT%H:%M:%SZ', gmtime(event.end_time))
    return {'title':title,'descr':descr,'where':where,'start':start,'end':end}


def atomEntryFromDict(d):
    entry = """
<entry xmlns='http://www.w3.org/2005/Atom'
    xmlns:gd='http://schemas.google.com/g/2005'>
  <category scheme='http://schemas.google.com/g/2005#kind'
    term='http://schemas.google.com/g/2005#event'></category>
  <title type='text'>%s</title>
  <content type='text'>%s</content>
  <author>
    <name>NAME</name>
    <email>USERNAME</email>
  </author>
  <gd:transparency
    value='http://schemas.google.com/g/2005#event.opaque'>
  </gd:transparency>
  <gd:eventStatus
    value='http://schemas.google.com/g/2005#event.confirmed'>
  </gd:eventStatus>
  <gd:where valueString='%s'></gd:where>
  <gd:when startTime='%s'
     endTime= '%s'>
  </gd:when>
</entry> """ % (d['title'],d['descr'],d['where'],d['start'],d['end'])
    return entry

def insertGcal(atomEntry,sessionUrl,auth):
    headers = {'Content-Type': 'application/atom+xml','Authorization': 'GoogleLogin auth='+auth} 
    conn = httplib.HTTPConnection("www.google.com")
    conn.request("POST", sessionUrl, atomEntry, headers)
    response = conn.getresponse()
    body = response.read()
    conn.close()

u = 'USERNAME'
p = 'PASSWORD'
feedloc = '/calendar/feeds/'+u+'/private/full'

cal = calendar.open()
entries = cal.daily_instances(time(),appointments=1,events=1)

auth = GoogleAuth( u, p )
sess = SessionUrl( auth, feedloc )
for entry in entries:
    event = cal[entry['id']]
    dict = dictFromS60Event(event)
    entry = atomEntryFromDict(dict)
    insertGcal(entry,sess,auth)
    print "Added : " + event.content