# -*- coding: utf-8 -*-
#
# Author: François Rossigneux <francois.rossigneux@inria.fr>
#
# 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.

"""Set up the API server application instance."""

import flask
from oslo.config import cfg

from kwapi.openstack.common import log
import acl
from collector import Collector
import v1

LOG = log.getLogger(__name__)

app_opts = [
    cfg.BoolOpt('acl_enabled',
                required=True,
                ),
]

cfg.CONF.register_opts(app_opts)


def make_app():
    """Instantiates Flask app, attaches collector database, installs acl."""
    LOG.info('Starting API')
    app = flask.Flask(__name__)
    app.register_blueprint(v1.blueprint, url_prefix='/v1')

    collector = Collector()
    collector.clean()

    @app.before_request
    def attach_config():
        flask.request.database = collector.database

    # Install the middleware wrapper
    if cfg.CONF.acl_enabled:
        return acl.install(app)

    return app