# -*- coding: utf-8 -*-

# Copyright 2010 - 2017 RhodeCode GmbH and the AppEnlight project authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import argparse
import logging
import os
import pkg_resources
import jinja2
from cryptography.fernet import Fernet


log = logging.getLogger(__name__)


def gen_secret():
    return Fernet.generate_key().decode('utf8')


def main():
    parser = argparse.ArgumentParser(
        description='Generate AppEnlight static resources',
        add_help=False)
    parser.add_argument('config', help='Name of generated file')
    parser.add_argument(
        '--domain',
        default='appenlight-rhodecode.local',
        help='Domain which will be used to serve the application')
    parser.add_argument(
        '--dbstring',
        default='postgresql://appenlight:test@127.0.0.1:5432/appenlight',
        help='Domain which will be used to serve the application')
    args = parser.parse_args()
    ini_path = os.path.join('templates', 'ini', 'production.ini.jinja2')
    template_str = pkg_resources.resource_string('appenlight', ini_path)
    template = jinja2.Template(template_str.decode('utf8'))
    template_vars = {'appenlight_encryption_secret': gen_secret(),
                     'appenlight_authtkt_secret': gen_secret(),
                     'appenlight_redis_session_secret': gen_secret(),
                     'appenlight_domain': args.domain,
                     'appenlight_dbstring': args.dbstring,
                     }
    compiled = template.render(**template_vars)
    with open(args.config, 'w') as f:
        f.write(compiled)