"""authentication using google authentication service

:organization: Logilab

:copyright: 2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

"""

__docformat__ = "restructuredtext en"

from cubicweb.common.registerers import priority_registerer

from cubicweb.web.views.basecomponents import UserLink

from cubicweb.web.views.actions import LogoutAction

from google.appengine.api import users

class use_google_auth_registerer(priority_registerer):

    """register object if use-google-auth is true"""

    def do_it_yourself(self, registered):

        if not hasattr(self.config, 'has_resource'):

            return

        return super(use_google_auth_registerer, self).do_it_yourself(registered)

class GAEUserLink(UserLink):

    __registerer__ = use_google_auth_registerer

    def anon_user_link(self):

        self.w(self.req._('anonymous'))

        self.w(u'&nbsp;[<a class="logout" href="%s">%s</a>]'

               % (users.create_login_url(self.req.url()), self.req._('login')))

class GAELogoutAction(LogoutAction):

    __registerer__ = use_google_auth_registerer

    def url(self):

        return users.create_logout_url(self.req.build_url('logout') )