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# Copyright 2012 IBM
# 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.


import webob.exc

from nova.api.openstack.compute.contrib import cloudpipe
from nova.api.openstack import extensions
from nova.api.openstack import wsgi
from nova import db
from nova import exception
from nova.openstack.common import log as logging

LOG = logging.getLogger(__name__)
authorize = extensions.extension_authorizer('compute', 'cloudpipe_update')


class CloudpipeUpdateController(wsgi.Controller):
    """Handle updating the vpn ip/port for cloudpipe instances."""

    def __init__(self):
        super(CloudpipeUpdateController, self).__init__()

    @wsgi.action("update")
    def update(self, req, id, body):
        """Configure cloudpipe parameters for the project"""

        context = req.environ['nova.context']
        authorize(context)

        if id != "configure-project":
            msg = _("Unknown action %s") % id
            raise webob.exc.HTTPBadRequest(explanation=msg)

        project_id = context.project_id

        try:
            params = body['configure_project']
            vpn_ip = params['vpn_ip']
            vpn_port = params['vpn_port']
        except (TypeError, KeyError):
            raise webob.exc.HTTPUnprocessableEntity()

        networks = db.project_get_networks(context, project_id)
        for network in networks:
            db.network_update(context, network['id'],
                              {'vpn_public_address': vpn_ip,
                               'vpn_public_port': int(vpn_port)})
        return webob.exc.HTTPAccepted()


class Cloudpipe_update(extensions.ExtensionDescriptor):
    """Adds the ability to set the vpn ip/port for cloudpipe instances."""

    name = "CloudpipeUpdate"
    alias = "os-cloudpipe-update"
    namespace = "http://docs.openstack.org/compute/ext/cloudpipe-update/api/v2"
    updated = "2012-11-14T00:00:00+00:00"

    def get_controller_extensions(self):
        controller = CloudpipeUpdateController()
        extension = extensions.ControllerExtension(self, 'os-cloudpipe',
                                                   controller)
        return [extension]
