Synnefo

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import datetime

from urlparse import urlsplit, urlunsplit

from urllib import quote

from django.http import HttpResponse

from django.utils.http import urlencode

from django.core.urlresolvers import reverse

from django.conf import settings

from django.contrib.auth import login

def prepare_response(request, user, next='', renew=False):

    """Return the unique username and the token

       as 'X-Auth-User' and 'X-Auth-Token' headers,

       or redirect to the URL provided in 'next'

       with the 'user' and 'token' as parameters.

       Reissue the token even if it has not yet

       expired, if the 'renew' parameter is present.

    """

    auth_token = user.auth_token

    auth_token_expires = user.auth_token_expires

    if renew or auth_token_expires < datetime.datetime.now():

        user.renew_token()

        user.save()

    if next:

        # TODO: Avoid redirect loops.

        parts = list(urlsplit(next))

        # Do not pass on user and token if we are on the same server.

        if parts[1] and request.get_host() != parts[1]:

            parts[3] = urlencode({'user': user.username, 'token': auth_token})

            next = urlunsplit(parts)

    if settings.FORCE_PROFILE_UPDATE and not user.is_verified:

        params = ''

        if next:

            params = '?' + urlencode({'next': next})

        next = reverse('astakos.im.views.edit_profile') + params

    # user login

    login(request, user)

    response = HttpResponse()

    if not next:

        response['X-Auth-User'] = user.username

        response['X-Auth-Token'] = auth_token

        response.content = user.username + '\n' + auth_token + '\n'

        response.status_code = 200

    else:

        response['Location'] = next

        response.status_code = 302

    return response