# Copyright 2014 OneConvergence, Inc. 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.
#
# @author: Kedar Kulkarni, One Convergence, Inc.

from neutron.db import api as db
from neutron.db import models_v2
from neutron.db import securitygroups_db as sg_db
from neutron.extensions import securitygroup as ext_sg
from neutron import manager


def get_port_from_device(port_id):
    session = db.get_session()
    sg_binding_port = sg_db.SecurityGroupPortBinding.port_id

    query = session.query(models_v2.Port,
                          sg_db.SecurityGroupPortBinding.security_group_id)
    query = query.outerjoin(sg_db.SecurityGroupPortBinding,
                            models_v2.Port.id == sg_binding_port)
    query = query.filter(models_v2.Port.id == port_id)
    port_and_sgs = query.all()
    if not port_and_sgs:
        return None
    port = port_and_sgs[0][0]
    plugin = manager.NeutronManager.get_plugin()
    port_dict = plugin._make_port_dict(port)
    port_dict[ext_sg.SECURITYGROUPS] = [
        sg_id for tport, sg_id in port_and_sgs if sg_id]
    port_dict['security_group_rules'] = []
    port_dict['security_group_source_groups'] = []
    port_dict['fixed_ips'] = [ip['ip_address']
                              for ip in port['fixed_ips']]
    return port_dict