# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
# Copyright 2012 Red Hat, Inc.
#
#    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.

from oslo_config import cfg
from oslo_middleware import cors

from watcher import version
from watcher.common import rpc


def set_lib_defaults():
    cors.set_defaults(
        allow_headers=[
            'X-Auth-Token',
            'X-Identity-Status',
            'X-Roles',
            'X-Service-Catalog',
            'X-User-Id',
            'X-Tenant-Id',
            'X-OpenStack-Request-ID',
        ],
        expose_headers=[
            'X-Auth-Token',
            'X-Subject-Token',
            'X-Service-Token',
            'X-OpenStack-Request-ID',
        ],
        allow_methods=['GET', 'PUT', 'POST', 'DELETE', 'PATCH'],
    )


def parse_args(argv, default_config_files=None, default_config_dirs=None):
    default_config_files = default_config_files or cfg.find_config_files(
        project='watcher'
    )
    default_config_dirs = default_config_dirs or cfg.find_config_dirs(
        project='watcher'
    )
    rpc.set_defaults(control_exchange='watcher')
    cfg.CONF(
        argv[1:],
        project='watcher',
        version=version.version_info.release_string(),
        default_config_dirs=default_config_dirs,
        default_config_files=default_config_files,
    )
    rpc.init(cfg.CONF)
