#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2008-2009, 2013 Zuza Software Foundation
#
# This file is part of Pootle.
#
# Pootle is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Pootle 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 for more details.
#
# You should have received a copy of the GNU General Public License along with
# Pootle; if not, see <http://www.gnu.org/licenses/>.

from django.conf import settings


class BaseUrlMiddleware(object):

    def process_request(self, request):
        """Calculate settings.BASEURL based on HTTP headers."""
        domain = None

        if 'HTTP_HOST' in request.META:
            domain = request.get_host()

        if 'SCRIPT_NAME' in request.META:
            settings.SCRIPT_NAME = request.META['SCRIPT_NAME']
            if domain is not None:
                domain += request.META['SCRIPT_NAME']

        if domain is not None:
            if request.is_secure():
                settings.BASE_URL = 'https://' + domain
            else:
                settings.BASE_URL = 'http://' + domain

            #FIXME: DIRTY HACK ALERT: if this works then something is
            # wrong with the universe.
            #
            # Poison sites cache using detected domain.
            from django.contrib.sites import models as sites_models

            new_site = sites_models.Site(settings.SITE_ID, request.get_host(),
                                         settings.TITLE)
            sites_models.SITE_CACHE[settings.SITE_ID] = new_site
