# Copyright (c) 2015 SONATA-NFV and Paderborn University
# ALL RIGHTS RESERVED.
#
# 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.
#
# Neither the name of the SONATA-NFV, Paderborn University
# nor the names of its contributors may be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# This work has been performed in the framework of the SONATA project,
# funded by the European Commission under Grant number 671517 through
# the Horizon 2020 and 5G-PPP programmes. The authors would like to
# acknowledge the contributions of their colleagues of the SONATA
# partner consortium (www.sonata-nfv.eu).
import logging
import threading
import dummygatekeeper as dgk


class SonataDummyGatekeeperEndpoint(object):
    """
    Creates and starts a REST API based on Flask in an
    additional thread.

    Can connect this API to data centers defined in an emulator
    topology.
    """

    def __init__(self, listenip, port, deploy_sap=False, docker_management=False,
                 auto_deploy=False, auto_delete=False, sap_vnfd_path=None):
        self.dcs = {}
        self.ip = listenip
        self.port = port
        dgk.DEPLOY_SAP = deploy_sap
        dgk.USE_DOCKER_MGMT = docker_management
        dgk.AUTO_DEPLOY = auto_deploy
        dgk.AUTO_DELETE = auto_delete
        dgk.SAP_VNFD = sap_vnfd_path
        logging.debug("Created API endpoint %s" % self)

    def __repr__(self):
        return "%s(%s:%d)" % (self.__class__.__name__, self.ip, self.port)

    def connectDatacenter(self, dc):
        self.dcs[dc.label] = dc
        logging.info("Connected DC(%s) to API endpoint %s" % (
            dc, self))

    def start(self):
        thread = threading.Thread(target=self._api_server_thread, args=())
        thread.daemon = True
        thread.start()
        logging.debug("Started API endpoint %s" % self)

    def _api_server_thread(self):
        dgk.start_rest_api(self.ip, self.port, self.dcs)
