#
#    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 copy

import mock

from heat.engine import properties
from heat.engine import resource
from heat.engine.resources.openstack.keystone import service
from heat.engine import stack
from heat.engine import template
from heat.tests import common
from heat.tests import fakes
from heat.tests import utils

keystone_service_template = {
    'heat_template_version': '2015-04-30',
    'resources': {
        'test_service': {
            'type': 'OS::Keystone::Service',
            'properties': {
                'name': 'test_service_1',
                'description': 'Test service',
                'type': 'orchestration',
                'enabled': False
            }
        }
    }
}

RESOURCE_TYPE = 'OS::Keystone::Service'


class KeystoneServiceTest(common.HeatTestCase):
    def setUp(self):
        super(KeystoneServiceTest, self).setUp()

        self.ctx = utils.dummy_context()

        # Mock client
        self.keystoneclient = mock.Mock()
        self.patchobject(resource.Resource, 'client',
                         return_value=fakes.FakeKeystoneClient(
                             client=self.keystoneclient))
        self.services = self.keystoneclient.services

        # Mock client plugin
        self.keystone_client_plugin = mock.MagicMock()

    def _setup_service_resource(self, stack_name, use_default=False):
        tmpl_data = copy.deepcopy(keystone_service_template)
        if use_default:
            props = tmpl_data['resources']['test_service']['properties']
            del props['name']
            del props['enabled']
            del props['description']

        test_stack = stack.Stack(
            self.ctx, stack_name,
            template.Template(tmpl_data)
        )
        r_service = test_stack['test_service']
        r_service.client = mock.MagicMock()
        r_service.client.return_value = self.keystoneclient
        r_service.client_plugin = mock.MagicMock()
        r_service.client_plugin.return_value = self.keystone_client_plugin

        return r_service

    def _get_mock_service(self):
        value = mock.MagicMock()
        value.id = '477e8273-60a7-4c41-b683-fdb0bc7cd152'

        return value

    def test_service_handle_create(self):
        rsrc = self._setup_service_resource('test_service_create')
        mock_service = self._get_mock_service()
        self.services.create.return_value = mock_service

        # validate the properties
        self.assertEqual(
            'test_service_1',
            rsrc.properties.get(service.KeystoneService.NAME))
        self.assertEqual(
            'Test service',
            rsrc.properties.get(
                service.KeystoneService.DESCRIPTION))
        self.assertEqual(
            'orchestration',
            rsrc.properties.get(service.KeystoneService.TYPE))
        self.assertFalse(rsrc.properties.get(
            service.KeystoneService.ENABLED))

        rsrc.handle_create()

        # validate service creation
        self.services.create.assert_called_once_with(
            name='test_service_1',
            description='Test service',
            type='orchestration',
            enabled=False)

        # validate physical resource id
        self.assertEqual(mock_service.id, rsrc.resource_id)

    def test_service_handle_create_default(self):
        rsrc = self._setup_service_resource('test_create_with_defaults',
                                            use_default=True)
        mock_service = self._get_mock_service()
        self.services.create.return_value = mock_service

        rsrc.physical_resource_name = mock.MagicMock()
        rsrc.physical_resource_name.return_value = 'foo'

        # validate the properties
        self.assertIsNone(
            rsrc.properties.get(service.KeystoneService.NAME))
        self.assertIsNone(rsrc.properties.get(
            service.KeystoneService.DESCRIPTION))
        self.assertEqual(
            'orchestration',
            rsrc.properties.get(service.KeystoneService.TYPE))
        self.assertTrue(rsrc.properties.get(service.KeystoneService.ENABLED))

        rsrc.handle_create()

        # validate service creation with physical resource name
        self.services.create.assert_called_once_with(
            name='foo',
            description=None,
            type='orchestration',
            enabled=True)

    def test_service_handle_update(self):
        rsrc = self._setup_service_resource('test_update')
        rsrc.resource_id = '477e8273-60a7-4c41-b683-fdb0bc7cd151'

        prop_diff = {service.KeystoneService.NAME: 'test_service_1_updated',
                     service.KeystoneService.DESCRIPTION:
                         'Test Service updated',
                     service.KeystoneService.TYPE: 'heat_updated',
                     service.KeystoneService.ENABLED: False}

        rsrc.handle_update(json_snippet=None,
                           tmpl_diff=None,
                           prop_diff=prop_diff)

        self.services.update.assert_called_once_with(
            service=rsrc.resource_id,
            name=prop_diff[service.KeystoneService.NAME],
            description=prop_diff[service.KeystoneService.DESCRIPTION],
            type=prop_diff[service.KeystoneService.TYPE],
            enabled=prop_diff[service.KeystoneService.ENABLED]
        )

    def test_service_handle_update_default_name(self):
        rsrc = self._setup_service_resource('test_update_default_name')
        rsrc.resource_id = '477e8273-60a7-4c41-b683-fdb0bc7cd151'
        rsrc.physical_resource_name = mock.MagicMock()
        rsrc.physical_resource_name.return_value = 'foo'

        # Name is reset to None, so default to physical resource name
        prop_diff = {service.KeystoneService.NAME: None}

        rsrc.handle_update(json_snippet=None,
                           tmpl_diff=None,
                           prop_diff=prop_diff)

        # validate default name to physical resource name
        self.services.update.assert_called_once_with(
            service=rsrc.resource_id,
            name='foo',
            type=None,
            description=None,
            enabled=None
        )

    def test_service_handle_update_only_enabled(self):
        rsrc = self._setup_service_resource('test_update_enabled_only')
        rsrc.resource_id = '477e8273-60a7-4c41-b683-fdb0bc7cd151'

        prop_diff = {service.KeystoneService.ENABLED: False}

        rsrc.handle_update(json_snippet=None,
                           tmpl_diff=None,
                           prop_diff=prop_diff)

        self.services.update.assert_called_once_with(
            service=rsrc.resource_id,
            name=None,
            description=None,
            type=None,
            enabled=prop_diff[service.KeystoneService.ENABLED]
        )

    def test_properties_title(self):
        property_title_map = {
            service.KeystoneService.NAME: 'name',
            service.KeystoneService.DESCRIPTION: 'description',
            service.KeystoneService.TYPE: 'type',
            service.KeystoneService.ENABLED: 'enabled'
        }

        for actual_title, expected_title in property_title_map.items():
            self.assertEqual(
                expected_title,
                actual_title,
                'KeystoneService PROPERTIES(%s) title modified.' %
                actual_title)

    def test_property_name_validate_schema(self):
        schema = service.KeystoneService.properties_schema[
            service.KeystoneService.NAME]
        self.assertTrue(
            schema.update_allowed,
            'update_allowed for property %s is modified' %
            service.KeystoneService.NAME)

        self.assertEqual(properties.Schema.STRING,
                         schema.type,
                         'type for property %s is modified' %
                         service.KeystoneService.NAME)

        self.assertEqual('Name of keystone service.',
                         schema.description,
                         'description for property %s is modified' %
                         service.KeystoneService.NAME)

    def test_property_description_validate_schema(self):
        schema = service.KeystoneService.properties_schema[
            service.KeystoneService.DESCRIPTION]
        self.assertTrue(
            schema.update_allowed,
            'update_allowed for property %s is modified' %
            service.KeystoneService.DESCRIPTION)

        self.assertEqual(properties.Schema.STRING,
                         schema.type,
                         'type for property %s is modified' %
                         service.KeystoneService.DESCRIPTION)

        self.assertEqual('Description of keystone service.',
                         schema.description,
                         'description for property %s is modified' %
                         service.KeystoneService.DESCRIPTION)

    def test_property_type_validate_schema(self):
        schema = service.KeystoneService.properties_schema[
            service.KeystoneService.TYPE]
        self.assertTrue(
            schema.update_allowed,
            'update_allowed for property %s is modified' %
            service.KeystoneService.TYPE)

        self.assertTrue(
            schema.required,
            'required for property %s is modified' %
            service.KeystoneService.TYPE)

        self.assertEqual(properties.Schema.STRING,
                         schema.type,
                         'type for property %s is modified' %
                         service.KeystoneService.TYPE)

        self.assertEqual('Type of keystone Service.',
                         schema.description,
                         'description for property %s is modified' %
                         service.KeystoneService.TYPE)

    def test_show_resource(self):
        rsrc = self._setup_service_resource('test_show_resource')
        moc_service = mock.Mock()
        moc_service.to_dict.return_value = {'attr': 'val'}
        self.services.get.return_value = moc_service
        attributes = rsrc._show_resource()
        self.assertEqual({'attr': 'val'}, attributes)