#   Copyright 2012-2013 OpenStack, LLC.
#
#   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 logging

from openstackclient.common import utils


LOG = logging.getLogger(__name__)

DEFAULT_VOLUME_API_VERSION = '1'
API_VERSION_OPTION = 'os_volume_api_version'
API_NAME = "volume"
API_VERSIONS = {
    "1": "cinderclient.v1.client.Client"
}


def make_client(instance):
    """Returns a volume service client."""
    volume_client = utils.get_client_class(
        API_NAME,
        instance._api_version[API_NAME],
        API_VERSIONS
    )

    LOG.debug('instantiating volume client')

    # Set client http_log_debug to True if verbosity level is high enough
    http_log_debug = utils.get_effective_log_level() <= logging.DEBUG

    client = volume_client(
        username=instance._username,
        api_key=instance._password,
        project_id=instance._project_name,
        auth_url=instance._auth_url,
        cacert=instance._cacert,
        insecure=instance._insecure,
        http_log_debug=http_log_debug
    )

    return client


def build_option_parser(parser):
    """Hook to add global options"""
    parser.add_argument(
        '--os-volume-api-version',
        metavar='<volume-api-version>',
        default=utils.env(
            'OS_VOLUME_API_VERSION',
            default=DEFAULT_VOLUME_API_VERSION),
        help='Volume API version, default=' +
             DEFAULT_VOLUME_API_VERSION +
             ' (Env: OS_VOLUME_API_VERSION)')
    return parser