#    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_log import log
import pecan

from higgins.api import config as api_config
from higgins.api import middleware
from higgins.common.i18n import _


# Register options for the service
API_SERVICE_OPTS = [
    cfg.PortOpt('port',
                default=9512,
                help='The port for the higgins API server.'),
    cfg.IPOpt('host',
              default='127.0.0.1',
              help='The listen IP for the higgins API server.'),
    cfg.BoolOpt('enable_ssl_api',
                default=False,
                help=_("Enable the integrated stand-alone API to service "
                       "requests via HTTPS instead of HTTP. If there is a "
                       "front-end service performing HTTPS offloading from "
                       "the service, this option should be False; note, you "
                       "will want to change public API endpoint to represent "
                       "SSL termination URL with 'public_endpoint' option.")),
    cfg.IntOpt('workers',
               help=_("Number of workers for higgins-api service. "
                      "The default will be the number of CPUs available.")),
]

CONF = cfg.CONF
opt_group = cfg.OptGroup(name='api',
                         title='Options for the higgins-api service')
CONF.register_group(opt_group)
CONF.register_opts(API_SERVICE_OPTS, opt_group)

LOG = log.getLogger(__name__)


def get_pecan_config():
    # Set up the pecan configuration
    filename = api_config.__file__.replace('.pyc', '.py')
    return pecan.configuration.conf_from_file(filename)


def setup_app(config=None):
    if not config:
        config = get_pecan_config()

    app_conf = dict(config.app)

    app = pecan.make_app(
        app_conf.pop('root'),
        logging=getattr(config, 'logging', {}),
        wrap_app=middleware.ParsableErrorMiddleware,
        **app_conf
    )

    return app