# copyright 2017 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

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

#

# This file is part of CubicWeb.

#

# CubicWeb is free software: you can redistribute it and/or modify it under the

# terms of the GNU Lesser General Public License as published by the Free

# Software Foundation, either version 2.1 of the License, or (at your option)

# any later version.

#

# CubicWeb 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 Lesser General Public License for more

# details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

"""Configuration for CubicWeb instances on top of a Pyramid application"""

from os import path

import random

import string

from logilab.common.configuration import merge_options

from cubicweb.cwconfig import CONFIGURATIONS

from cubicweb.server.serverconfig import ServerConfiguration

from cubicweb.toolsutils import fill_templated_file

from cubicweb.web.webconfig import BaseWebConfiguration

def get_random_secret_key():

    """Return 50-character secret string"""

    chars = string.ascii_letters + string.digits

    secure_random = random.SystemRandom()

    return "".join([secure_random.choice(chars) for i in range(50)])

class CubicWebPyramidConfiguration(BaseWebConfiguration, ServerConfiguration):

    """Pyramid application with a CubicWeb repository"""

    name = 'pyramid'

    cubicweb_appobject_path = (BaseWebConfiguration.cubicweb_appobject_path

                               | ServerConfiguration.cubicweb_appobject_path)

    cube_appobject_path = (BaseWebConfiguration.cube_appobject_path

                           | ServerConfiguration.cube_appobject_path)

    options = merge_options(ServerConfiguration.options

                            + BaseWebConfiguration.options)

    def init_log(self, *args, **kwargs):

        """Rely on logging configuration in Pyramid's .ini file, do nothing

        here.

        """

    def write_development_ini(self, cubes):

        """Write a 'development.ini' file into apphome."""

        template_fpath = path.join(path.dirname(__file__), 'development.ini.tmpl')

        target_fpath = path.join(self.apphome, 'development.ini')

        context = {

            'instance': self.appid,

            'cubename': cubes[0],

            'session-secret': get_random_secret_key(),

            'auth-authtkt-persistent-secret': get_random_secret_key(),

            'auth-authtkt-session-secret': get_random_secret_key(),

        }

        fill_templated_file(template_fpath, target_fpath, context)

CONFIGURATIONS.append(CubicWebPyramidConfiguration)