# Copyright 2012-2014 eNovance <licensing@enovance.com>
#
# 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 sys

from oslo_config import cfg
import oslo_i18n
from oslo_log import log
from oslo_reports import guru_meditation_report as gmr

from ceilometer import keystone_client
from ceilometer import messaging
from ceilometer import opts
from ceilometer import sample
from ceilometer import utils
from ceilometer import version


def prepare_service(argv=None, config_files=None, conf=None):
    if argv is None:
        argv = sys.argv

    if conf is None:
        conf = cfg.ConfigOpts()

    oslo_i18n.enable_lazy()
    for group, options in opts.list_opts():
        conf.register_opts(list(options),
                           group=None if group == "DEFAULT" else group)
    keystone_client.register_keystoneauth_opts(conf)
    log.register_options(conf)
    log_levels = (conf.default_log_levels +
                  ['futurist=INFO', 'neutronclient=INFO',
                   'keystoneclient=INFO'])
    log.set_defaults(default_log_levels=log_levels)

    conf(argv[1:], project='ceilometer', validate_default_values=True,
         version=version.version_info.version_string(),
         default_config_files=config_files)

    keystone_client.post_register_keystoneauth_opts(conf)

    log.setup(conf, 'ceilometer')
    utils.setup_root_helper(conf)
    sample.setup(conf)

    gmr.TextGuruMeditation.setup_autorun(version)
    messaging.setup()
    return conf
