# 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 uuid

import mock
from oslo.config import cfg
from oslo.config import fixture as config
import stevedore

from keystoneclient.auth import base
from keystoneclient.auth import conf
from keystoneclient.auth.identity import v2 as v2_auth
from keystoneclient.auth.identity import v3 as v3_auth
from keystoneclient import exceptions
from keystoneclient.tests.auth import utils


class ConfTests(utils.TestCase):

    def setUp(self):
        super(ConfTests, self).setUp()
        self.conf_fixture = self.useFixture(config.Config())

        # NOTE(jamielennox): we register the basic config options first because
        # we need them in place before we can stub them. We will need to run
        # the register again after we stub the auth section and auth plugin so
        # it can load the plugin specific options.
        conf.register_conf_options(self.conf_fixture.conf, group=self.GROUP)

    def test_loading_v2(self):
        section = uuid.uuid4().hex
        username = uuid.uuid4().hex
        password = uuid.uuid4().hex
        trust_id = uuid.uuid4().hex
        tenant_id = uuid.uuid4().hex

        self.conf_fixture.config(auth_section=section, group=self.GROUP)
        conf.register_conf_options(self.conf_fixture.conf, group=self.GROUP)

        self.conf_fixture.register_opts(v2_auth.Password.get_options(),
                                        group=section)

        self.conf_fixture.config(auth_plugin=self.V2PASS,
                                 username=username,
                                 password=password,
                                 trust_id=trust_id,
                                 tenant_id=tenant_id,
                                 group=section)

        a = conf.load_from_conf_options(self.conf_fixture.conf, self.GROUP)

        self.assertEqual(username, a.username)
        self.assertEqual(password, a.password)
        self.assertEqual(trust_id, a.trust_id)
        self.assertEqual(tenant_id, a.tenant_id)

    def test_loading_v3(self):
        section = uuid.uuid4().hex
        token = uuid.uuid4().hex
        trust_id = uuid.uuid4().hex
        project_id = uuid.uuid4().hex
        project_domain_name = uuid.uuid4().hex

        self.conf_fixture.config(auth_section=section, group=self.GROUP)
        conf.register_conf_options(self.conf_fixture.conf, group=self.GROUP)

        self.conf_fixture.register_opts(v3_auth.Token.get_options(),
                                        group=section)

        self.conf_fixture.config(auth_plugin=self.V3TOKEN,
                                 token=token,
                                 trust_id=trust_id,
                                 project_id=project_id,
                                 project_domain_name=project_domain_name,
                                 group=section)

        a = conf.load_from_conf_options(self.conf_fixture.conf, self.GROUP)

        self.assertEqual(token, a.auth_methods[0].token)
        self.assertEqual(trust_id, a.trust_id)
        self.assertEqual(project_id, a.project_id)
        self.assertEqual(project_domain_name, a.project_domain_name)

    def test_loading_invalid_plugin(self):
        auth_plugin = uuid.uuid4().hex
        self.conf_fixture.config(auth_plugin=auth_plugin,
                                 group=self.GROUP)

        e = self.assertRaises(exceptions.NoMatchingPlugin,
                              conf.load_from_conf_options,
                              self.conf_fixture.conf,
                              self.GROUP)

        self.assertEqual(auth_plugin, e.name)

    def test_loading_with_no_data(self):
        self.assertIsNone(conf.load_from_conf_options(self.conf_fixture.conf,
                                                      self.GROUP))

    @mock.patch('stevedore.DriverManager')
    def test_other_params(self, m):
        m.return_value = utils.MockManager(utils.MockPlugin)
        driver_name = uuid.uuid4().hex

        self.conf_fixture.register_opts(utils.MockPlugin.get_options(),
                                        group=self.GROUP)
        self.conf_fixture.config(auth_plugin=driver_name,
                                 group=self.GROUP,
                                 **self.TEST_VALS)

        a = conf.load_from_conf_options(self.conf_fixture.conf, self.GROUP)
        self.assertTestVals(a)

        m.assert_called_once_with(namespace=base.PLUGIN_NAMESPACE,
                                  name=driver_name,
                                  invoke_on_load=False)

    @utils.mock_plugin
    def test_same_section(self, m):
        self.conf_fixture.register_opts(utils.MockPlugin.get_options(),
                                        group=self.GROUP)
        conf.register_conf_options(self.conf_fixture.conf, group=self.GROUP)
        self.conf_fixture.config(auth_plugin=uuid.uuid4().hex,
                                 group=self.GROUP,
                                 **self.TEST_VALS)

        a = conf.load_from_conf_options(self.conf_fixture.conf, self.GROUP)
        self.assertTestVals(a)

    @utils.mock_plugin
    def test_diff_section(self, m):
        section = uuid.uuid4().hex

        self.conf_fixture.config(auth_section=section, group=self.GROUP)
        conf.register_conf_options(self.conf_fixture.conf, group=self.GROUP)

        self.conf_fixture.register_opts(utils.MockPlugin.get_options(),
                                        group=section)
        self.conf_fixture.config(group=section,
                                 auth_plugin=uuid.uuid4().hex,
                                 **self.TEST_VALS)

        a = conf.load_from_conf_options(self.conf_fixture.conf, self.GROUP)
        self.assertTestVals(a)

    def test_plugins_are_all_opts(self):
        manager = stevedore.ExtensionManager(base.PLUGIN_NAMESPACE,
                                             invoke_on_load=False,
                                             propagate_map_exceptions=True)

        def inner(driver):
            for p in driver.plugin.get_options():
                self.assertIsInstance(p, cfg.Opt)

        manager.map(inner)

    def test_get_common(self):
        opts = conf.get_common_conf_options()
        for opt in opts:
            self.assertIsInstance(opt, cfg.Opt)
        self.assertEqual(2, len(opts))

    def test_get_named(self):
        loaded_opts = conf.get_plugin_options('v2password')
        plugin_opts = v2_auth.Password.get_options()

        self.assertEqual(plugin_opts, loaded_opts)