# Copyright 2015 EasyStack, 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 glanceclient import exc as glance_exception
import mock
from novaclient import exceptions as nova_exc

from magnum.api import attr_validator
from magnum.common import exception
from magnum.tests import base


class TestAttrValidator(base.BaseTestCase):

    def test_validate_flavor_with_vaild_flavor(self):
        mock_flavor = mock.MagicMock()
        mock_flavor.name = 'test_flavor'
        mock_flavor.id = 'test_flavor_id'
        mock_flavors = [mock_flavor]
        mock_nova = mock.MagicMock()
        mock_nova.flavors.list.return_value = mock_flavors
        mock_os_cli = mock.MagicMock()
        mock_os_cli.nova.return_value = mock_nova
        attr_validator.validate_flavor(mock_os_cli, 'test_flavor')
        self.assertTrue(mock_nova.flavors.list.called)

    def test_validate_flavor_with_none_flavor(self):
        mock_flavor = mock.MagicMock()
        mock_flavor.name = 'test_flavor'
        mock_flavor.id = 'test_flavor_id'
        mock_flavors = [mock_flavor]
        mock_nova = mock.MagicMock()
        mock_nova.flavors.list.return_value = mock_flavors
        mock_os_cli = mock.MagicMock()
        mock_os_cli.nova.return_value = mock_nova
        attr_validator.validate_flavor(mock_os_cli, None)
        self.assertFalse(mock_nova.flavors.list.called)

    def test_validate_flavor_with_invalid_flavor(self):
        mock_flavor = mock.MagicMock()
        mock_flavor.name = 'test_flavor_not_equal'
        mock_flavor.id = 'test_flavor_id_not_equal'
        mock_flavors = [mock_flavor]
        mock_nova = mock.MagicMock()
        mock_nova.flavors.list.return_value = mock_flavors
        mock_os_cli = mock.MagicMock()
        mock_os_cli.nova.return_value = mock_nova
        self.assertRaises(exception.FlavorNotFound,
                          attr_validator.validate_flavor,
                          mock_os_cli, 'test_flavor')

    def test_validate_external_network_with_valid_network(self):
        mock_networks = {'networks': [{'name': 'test_ext_net',
                         'id': 'test_ext_net_id'}]}
        mock_neutron = mock.MagicMock()
        mock_neutron.list_networks.return_value = mock_networks
        mock_os_cli = mock.MagicMock()
        mock_os_cli.neutron.return_value = mock_neutron
        attr_validator.validate_external_network(mock_os_cli, 'test_ext_net')
        self.assertTrue(mock_neutron.list_networks.called)

    def test_validate_external_network_with_multiple_valid_network(self):
        mock_networks = {'networks':
                         [{'name': 'test_ext_net', 'id': 'test_ext_net_id1'},
                          {'name': 'test_ext_net', 'id': 'test_ext_net_id2'}]}
        mock_neutron = mock.MagicMock()
        mock_neutron.list_networks.return_value = mock_networks
        mock_os_cli = mock.MagicMock()
        mock_os_cli.neutron.return_value = mock_neutron
        self.assertRaises(exception.Conflict,
                          attr_validator.validate_external_network,
                          mock_os_cli, 'test_ext_net')

    def test_validate_external_network_with_invalid_network(self):
        mock_networks = {'networks': [{'name': 'test_ext_net_not_equal',
                         'id': 'test_ext_net_id_not_equal'}]}
        mock_neutron = mock.MagicMock()
        mock_neutron.list_networks.return_value = mock_networks
        mock_os_cli = mock.MagicMock()
        mock_os_cli.neutron.return_value = mock_neutron
        self.assertRaises(exception.ExternalNetworkNotFound,
                          attr_validator.validate_external_network,
                          mock_os_cli, 'test_ext_net')

    def test_validate_keypair_with_valid_keypair(self):
        mock_keypair = mock.MagicMock()
        mock_keypair.id = 'test-keypair'
        mock_nova = mock.MagicMock()
        mock_nova.keypairs.get.return_value = mock_keypair
        mock_os_cli = mock.MagicMock()
        mock_os_cli.nova.return_value = mock_nova
        attr_validator.validate_keypair(mock_os_cli, 'test-keypair')

    def test_validate_keypair_with_invalid_keypair(self):
        mock_nova = mock.MagicMock()
        mock_nova.keypairs.get.side_effect = nova_exc.NotFound('test-keypair')
        mock_os_cli = mock.MagicMock()
        mock_os_cli.nova.return_value = mock_nova
        self.assertRaises(exception.KeyPairNotFound,
                          attr_validator.validate_keypair,
                          mock_os_cli, 'test_keypair')

    def test_validate_labels_main_no_label(self):
        fake_labels = {}
        attr_validator.validate_labels(fake_labels)

    def test_validate_labels_main_isolation_invalid_label(self):
        fake_labels = {'mesos_slave_isolation': 'abc'}
        self.assertRaises(exception.InvalidParameterValue,
                          attr_validator.validate_labels,
                          fake_labels)

    def test_validate_labels_isolation_valid(self):
        fake_labels = {'mesos_slave_isolation':
                       'filesystem/posix,filesystem/linux'}
        attr_validator.validate_labels_isolation(fake_labels)

    def test_validate_labels_main_with_valid_providers_none_isolation(self):
        fake_labels = {'mesos_slave_image_providers': 'docker'}
        self.assertRaises(exception.RequiredParameterNotProvided,
                          attr_validator.validate_labels,
                          fake_labels)

    def test_validate_labels_with_valid_providers_invalid_isolation(self):
        fake_labels = {'mesos_slave_image_providers': 'docker',
                       'mesos_slave_isolation': 'abc'}
        self.assertRaises(exception.RequiredParameterNotProvided,
                          attr_validator.validate_labels_image_providers,
                          fake_labels)

    def test_validate_labels_with_valid_providers_invalid_providers(self):
        fake_labels = {'mesos_slave_image_providers': 'appc'}
        attr_validator.validate_labels_image_providers(fake_labels)

    def test_validate_labels_with_invalid_providers(self):
        fake_labels = {'mesos_slave_image_providers': 'abc'}
        self.assertRaises(exception.InvalidParameterValue,
                          attr_validator.validate_labels_image_providers,
                          fake_labels)

    def test_validate_labels_with_valid_providers_none_isolation(self):
        fake_labels = {'mesos_slave_image_providers': 'docker'}
        self.assertRaises(exception.RequiredParameterNotProvided,
                          attr_validator.validate_labels_image_providers,
                          fake_labels)

    def test_validate_labels_with_valid_providers_valid_isolation(self):
        fake_labels = {'mesos_slave_image_providers': 'docker',
                       'mesos_slave_isolation': 'docker/runtime'}
        attr_validator.validate_labels_image_providers(fake_labels)

    def test_validate_labels_with_environment_variables_valid_json(self):
        contents = '{"step": "upgrade", "interface": "deploy"}'
        fack_labels = {'mesos_slave_executor_env_variables': contents}
        attr_validator.validate_labels_executor_env_variables(
            fack_labels)

    def test_validate_labels_with_environment_variables_bad_json(self):
        fack_labels = {'mesos_slave_executor_env_variables': 'step'}
        self.assertRaisesRegex(
            exception.InvalidParameterValue,
            "Json format error",
            attr_validator.validate_labels_executor_env_variables,
            fack_labels)

    def test_validate_labels_with_valid_isolation(self):
        fake_labels = {'mesos_slave_isolation':
                       'filesystem/posix,filesystem/linux'}
        attr_validator.validate_labels_isolation(fake_labels)

    def test_validate_labels_isolation_invalid(self):
        fake_labels = {'mesos_slave_isolation': 'filesystem'}
        self.assertRaises(exception.InvalidParameterValue,
                          attr_validator.validate_labels_isolation,
                          fake_labels)

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_with_valid_image_by_name(self, mock_os_res):
        mock_image = {'name': 'fedora-21-atomic-5',
                      'id': 'e33f0988-1730-405e-8401-30cbc8535302',
                      'os_distro': 'fedora-atomic'}
        mock_os_res.return_value = mock_image
        mock_os_cli = mock.MagicMock()
        attr_validator.validate_image(mock_os_cli, 'fedora-21-atomic-5')
        self.assertTrue(mock_os_res.called)

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_with_forbidden_image(self, mock_os_res):
        def glance_side_effect(cli, image, name):
            raise glance_exception.HTTPForbidden()

        mock_os_res.side_effect = glance_side_effect
        mock_os_cli = mock.MagicMock()
        self.assertRaises(exception.ImageNotAuthorized,
                          attr_validator.validate_image, mock_os_cli,
                          'fedora-21-atomic-5')

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_with_valid_image_by_id(self, mock_os_res):
        mock_image = {'name': 'fedora-21-atomic-5',
                      'id': 'e33f0988-1730-405e-8401-30cbc8535302',
                      'os_distro': 'fedora-atomic'}
        mock_os_res.return_value = mock_image
        mock_os_cli = mock.MagicMock()
        attr_validator.validate_image(mock_os_cli,
                                      'e33f0988-1730-405e-8401-30cbc8535302')
        self.assertTrue(mock_os_res.called)

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_with_nonexist_image_by_name(self, mock_os_res):
        mock_os_res.side_effect = exception.ResourceNotFound
        mock_os_cli = mock.MagicMock()
        self.assertRaises(exception.ImageNotFound,
                          attr_validator.validate_image,
                          mock_os_cli, 'fedora-21-atomic-5')

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_with_nonexist_image_by_id(self, mock_os_res):
        mock_os_res.side_effect = glance_exception.NotFound
        mock_os_cli = mock.MagicMock()
        self.assertRaises(exception.ImageNotFound,
                          attr_validator.validate_image,
                          mock_os_cli, 'fedora-21-atomic-5')

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_with_multi_images_same_name(self, mock_os_res):
        mock_os_res.side_effect = exception.Conflict
        mock_os_cli = mock.MagicMock()
        self.assertRaises(exception.Conflict,
                          attr_validator.validate_image,
                          mock_os_cli, 'fedora-21-atomic-5')

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_without_os_distro(self, mock_os_res):
        mock_image = {'name': 'fedora-21-atomic-5',
                      'id': 'e33f0988-1730-405e-8401-30cbc8535302'}
        mock_os_res.return_value = mock_image
        mock_os_cli = mock.MagicMock()
        self.assertRaises(exception.OSDistroFieldNotFound,
                          attr_validator.validate_image,
                          mock_os_cli, 'fedora-21-atomic-5')

    @mock.patch('magnum.api.utils.get_openstack_resource')
    def test_validate_image_when_user_forbidden(self, mock_os_res):
        mock_image = {'name': 'fedora-21-atomic-5',
                      'id': 'e33f0988-1730-405e-8401-30cbc8535302',
                      'os_distro': ''}
        mock_os_res.return_value = mock_image
        mock_os_cli = mock.MagicMock()
        self.assertRaises(exception.OSDistroFieldNotFound,
                          attr_validator.validate_image,
                          mock_os_cli, 'fedora-21-atomic-5')

    @mock.patch('magnum.common.clients.OpenStackClients')
    def test_validate_os_resources_with_invalid_flavor(self,
                                                       mock_os_cli):
        mock_cluster_template = {'flavor_id': 'test_flavor'}
        mock_flavor = mock.MagicMock()
        mock_flavor.name = 'test_flavor_not_equal'
        mock_flavor.id = 'test_flavor_id_not_equal'
        mock_flavors = [mock_flavor]
        mock_nova = mock.MagicMock()
        mock_nova.flavors.list.return_value = mock_flavors
        mock_os_cli.nova.return_value = mock_nova
        mock_context = mock.MagicMock()
        self.assertRaises(exception.FlavorNotFound,
                          attr_validator.validate_os_resources,
                          mock_context, mock_cluster_template)

    @mock.patch('magnum.common.clients.OpenStackClients')
    @mock.patch('magnum.api.attr_validator.validate_labels')
    def test_validate_os_resources_with_label(self, mock_validate_labels,
                                              mock_os_cli):
        mock_cluster_template = {'labels': {'mesos_slave_isolation': 'abc'}}
        mock_context = mock.MagicMock()
        self.assertRaises(exception.InvalidParameterValue,
                          attr_validator.validate_os_resources, mock_context,
                          mock_cluster_template)

    @mock.patch('magnum.common.clients.OpenStackClients')
    @mock.patch('magnum.api.attr_validator.validators')
    def test_validate_os_resources_without_validator(self, mock_validators,
                                                     mock_os_cli):
        mock_cluster_template = {}
        mock_context = mock.MagicMock()
        attr_validator.validate_os_resources(mock_context,
                                             mock_cluster_template)
