#    Copyright (c) 2013 Mirantis, 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
import oslo_messaging as messaging
from oslo_messaging import rpc
from oslo_messaging import target

CONF = cfg.CONF

TRANSPORT = None


class ApiClient(object):
    def __init__(self, transport):
        client_target = target.Target('murano', 'results')
        self._client = rpc.RPCClient(transport, client_target, timeout=15)

    def process_result(self, result, environment_id):
        return self._client.call({}, 'process_result', result=result,
                                 environment_id=environment_id)


class EngineClient(object):
    def __init__(self, transport):
        client_target = target.Target('murano', 'tasks')
        self._client = rpc.RPCClient(transport, client_target, timeout=15)

    def handle_task(self, task):
        return self._client.cast({}, 'handle_task', task=task)

    def call_static_action(self, task):
        return self._client.call({}, 'call_static_action', task=task)

    def generate_schema(self, credentials, class_name, method_names=None,
                        class_version=None, package_name=None):
        return self._client.call(
            credentials, 'generate_schema',
            class_name=class_name,
            method_names=method_names,
            class_version=class_version,
            package_name=package_name
        )


def api():
    global TRANSPORT
    if TRANSPORT is None:
        TRANSPORT = messaging.get_notification_transport(CONF)

    return ApiClient(TRANSPORT)


def engine():
    global TRANSPORT
    if TRANSPORT is None:
        TRANSPORT = messaging.get_notification_transport(CONF)

    return EngineClient(TRANSPORT)