# ⁻*- coding: utf-8 -*-
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License version 3 for
# more details.
#
# You should have received a copy of the GNU General Public License version 3
# along with this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# (c) 2015 Valentin Samir
from .default_settings import settings

from .cas import CASClient
from .models import FederatedUser


class CASFederateValidateUser(object):
    username = None
    attributs = {}
    client = None

    def __init__(self, provider, service_url):
        self.provider = provider

        if provider in settings.CAS_FEDERATE_PROVIDERS:
            (server_url, version) = settings.CAS_FEDERATE_PROVIDERS[provider]
            self.client = CASClient(
                service_url=service_url,
                version=version,
                server_url=server_url,
                extra_login_params={"provider": provider},
                renew=False,
            )

    def get_login_url(self):
        return self.client.get_login_url() if self.client is not None else False

    def get_logout_url(self, redirect_url=None):
        return self.client.get_logout_url(redirect_url) if self.client is not None else False

    def verify_ticket(self, ticket):
        """test `password` agains the user"""
        if self.client is None:
            return False
        username, attributs, pgtiou = self.client.verify_ticket(ticket)
        if username is not None:
            attributs["provider"] = self.provider
            self.username = username
            self.attributs = attributs
            try:
                user = FederatedUser.objects.get(
                    username=username,
                    provider=self.provider
                )
                user.attributs = attributs
                user.ticket = ticket
                user.save()
            except FederatedUser.DoesNotExist:
                user = FederatedUser.objects.create(
                    username=username,
                    provider=self.provider,
                    attributs=attributs,
                    ticket=ticket
                )
                user.save()
            return True
        else:
            return False