#
#    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.
#
#    Copyright 2015 IBM Corp.

from neutronclient.common import exceptions
from neutronclient.neutron import v2_0 as neutronV20

from heat.common import exception
from heat.engine import constraints


class NetworkConstraint(constraints.BaseCustomConstraint):

    expected_exceptions = (exceptions.NeutronClientException,
                           exception.EntityNotFound,
                           exception.PhysicalResourceNameAmbiguity)

    def validate_with_client(self, client, value):
        try:
            neutron_client = client.client('neutron')
        except Exception:
            # is not using neutron
            client.client_plugin('nova').get_nova_network_id(value)
        else:
            neutronV20.find_resourceid_by_name_or_id(
                neutron_client, 'network', value)


class PortConstraint(constraints.BaseCustomConstraint):

    expected_exceptions = (exceptions.NeutronClientException,)

    def validate_with_client(self, client, value):
        neutron_client = client.client('neutron')
        neutronV20.find_resourceid_by_name_or_id(
            neutron_client, 'port', value)


class RouterConstraint(constraints.BaseCustomConstraint):

    expected_exceptions = (exceptions.NeutronClientException,)

    def validate_with_client(self, client, value):
        neutron_client = client.client('neutron')
        neutronV20.find_resourceid_by_name_or_id(
            neutron_client, 'router', value)


class SubnetConstraint(constraints.BaseCustomConstraint):

    expected_exceptions = (exceptions.NeutronClientException,)

    def validate_with_client(self, client, value):
        neutron_client = client.client('neutron')
        neutronV20.find_resourceid_by_name_or_id(
            neutron_client, 'subnet', value)


class SubnetPoolConstraint(constraints.BaseCustomConstraint):

    expected_exceptions = (exceptions.NeutronClientException,)

    def validate_with_client(self, client, value):
        neutron_client = client.client('neutron')
        neutronV20.find_resourceid_by_name_or_id(
            neutron_client, 'subnetpool', value)


class AddressScopeConstraint(constraints.BaseCustomConstraint):

    expected_exceptions = (exceptions.NeutronClientException,)

    def validate_with_client(self, client, value):
        neutron_client = client.client('neutron')
        neutronV20.find_resourceid_by_name_or_id(
            neutron_client, 'address_scope', value)