#
# This file is part of Plinth.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

"""
Main Plinth views
"""

from django.core.urlresolvers import reverse
from django.http.response import HttpResponseRedirect
import logging

from withsqlite.withsqlite import sqlite_db
import cfg


LOGGER = logging.getLogger(__name__)


def index(request):
    """Serve the main index page"""
    # TODO: Move firstboot handling to firstboot module somehow
    with sqlite_db(cfg.store_file, table='firstboot') as database:
        if not 'state' in database:
            # Permanent redirect causes the browser to cache the redirect,
            # preventing the user from navigating to /plinth until the
            # browser is restarted.
            return HttpResponseRedirect(reverse('first_boot:index'))

        if database['state'] < 5:
            LOGGER.info('First boot state - %d', database['state'])
            return HttpResponseRedirect(reverse('first_boot:state%d' %
                                                database['state']))

    if request.user.is_authenticated():
        return HttpResponseRedirect(reverse('apps:index'))

    return HttpResponseRedirect(reverse('apps:about'))