# 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 mock
import six
from webob import exc

from senlin.api.middleware import fault
from senlin.api.openstack.v1 import events
from senlin.common import exception as senlin_exc
from senlin.common import policy
from senlin.rpc import client as rpc_client
from senlin.tests.unit.api import shared
from senlin.tests.unit.common import base


@mock.patch.object(policy, 'enforce')
class EventControllerTest(shared.ControllerTest, base.SenlinTestCase):
    '''Tests the API class which acts as the WSGI controller.'''

    def setUp(self):
        super(EventControllerTest, self).setUp()
        # Create WSGI controller instance

        class DummyConfig(object):
            bind_port = 8778

        cfgopts = DummyConfig()
        self.controller = events.EventController(options=cfgopts)

    def test_event_index(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        req = self._get('/events')

        engine_resp = [
            {
                "action": "create",
                "cluster_id": None,
                "id": "2d255b9c-8f36-41a2-a137-c0175ccc29c3",
                "level": "20",
                "oid": "0df0931b-e251-4f2e-8719-4ebfda3627ba",
                "oname": "node009",
                "otype": "NODE",
                "project": "6e18cc2bdbeb48a5b3cad2dc499f6804",
                "status": "CREATING",
                "status_reason": "Initializing",
                "timestamp": "2015-03-05T08:53:15.000000",
                "user": "a21ded6060534d99840658a777c2af5a"
            }
        ]

        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
                                     return_value=engine_resp)

        resp = self.controller.index(req)

        kwargs = {'limit': None, 'marker': None, 'filters': None,
                  'sort': None, 'project_safe': True}
        mock_call.assert_called_once_with(req.context,
                                          ('event_list', kwargs))
        self.assertEqual(resp, {'events': engine_resp})

    def test_event_index_whitelists_params(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {
            'limit': 10,
            'marker': 'fake marker',
            'sort': 'fake sorting options',
            'global_project': False,
        }
        req = self._get('/events', params=params)

        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
                                     return_value=[])

        self.controller.index(req)

        rpc_call_args, w = mock_call.call_args
        engine_args = rpc_call_args[1][1]

        self.assertEqual(5, len(engine_args))
        self.assertIn('limit', engine_args)
        self.assertIn('marker', engine_args)
        self.assertIn('sort', engine_args)
        self.assertIn('project_safe', engine_args)

    def test_event_index_whitelists_invalid_params(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {
            'balrog': 'you shall not pass!'
        }
        req = self._get('/events', params=params)
        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
                                     return_value=[])

        ex = self.assertRaises(exc.HTTPBadRequest,
                               self.controller.index, req)

        self.assertEqual("Invalid parameter balrog",
                         str(ex))
        self.assertFalse(mock_call.called)

    def test_event_index_global_project_true(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {'global_project': 'True'}
        req = self._get('/events', params=params)

        mock_call = self.patchobject(rpc_client.EngineClient, 'call')
        self.controller.index(req)

        call_args, w = mock_call.call_args
        call_args = call_args[1][1]
        self.assertIn('project_safe', call_args)
        self.assertFalse(call_args['project_safe'])

    def test_event_index_global_project_false(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {'global_project': 'False'}
        req = self._get('/events', params=params)

        mock_call = self.patchobject(rpc_client.EngineClient, 'call')
        self.controller.index(req)

        call_args, w = mock_call.call_args
        call_args = call_args[1][1]
        self.assertIn('project_safe', call_args)
        self.assertTrue(call_args['project_safe'])

    def test_event_index_global_project_not_bool(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {'global_project': 'No'}
        req = self._get('/events', params=params)

        mock_call = self.patchobject(rpc_client.EngineClient, 'call')
        ex = self.assertRaises(senlin_exc.InvalidParameter,
                               self.controller.index, req)

        self.assertEqual("Invalid value 'No' specified for 'global_project'",
                         six.text_type(ex))
        self.assertFalse(mock_call.called)

    def test_event_index_limit_not_int(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {'limit': 'not-int'}
        req = self._get('/events', params=params)

        mock_call = self.patchobject(rpc_client.EngineClient, 'call')
        ex = self.assertRaises(senlin_exc.InvalidParameter,
                               self.controller.index, req)

        self.assertEqual("Invalid value 'not-int' specified for 'limit'",
                         six.text_type(ex))
        self.assertFalse(mock_call.called)

    def test_event_index_whitelist_filter_params(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {
            'oname': 'fake name',
            'otype': 'fake type',
            'oid': 'fake ID',
            'cluster_id': 'another fake ID',
            'action': 'fake action',
            'level': 30,
        }
        req = self._get('/events', params=params)

        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
                                     return_value=[])
        self.controller.index(req)

        rpc_call_args, _ = mock_call.call_args
        engine_args = rpc_call_args[1][1]
        self.assertIn('filters', engine_args)

        filters = engine_args['filters']
        self.assertEqual(6, len(filters))
        self.assertIn('oname', filters)
        self.assertIn('oid', filters)
        self.assertIn('otype', filters)
        self.assertIn('cluster_id', filters)
        self.assertIn('action', filters)
        self.assertIn('level', filters)

    def test_event_index_whitelist_filter_invalid_params(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', True)
        params = {
            'balrog': 'you shall not pass!'
        }
        req = self._get('/events', params=params)
        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
                                     return_value=[])

        ex = self.assertRaises(exc.HTTPBadRequest,
                               self.controller.index, req)

        self.assertEqual("Invalid parameter balrog",
                         str(ex))
        self.assertFalse(mock_call.called)

    def test_index_err_denied_policy(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'index', False)
        req = self._get('/events')

        resp = shared.request_with_middleware(fault.FaultWrapper,
                                              self.controller.index,
                                              req)
        self.assertEqual(403, resp.status_int)
        self.assertIn('403 Forbidden', six.text_type(resp))

    def test_event_get_success(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'get', True)
        event_id = "2d255b9c-8f36-41a2-a137-c0175ccc29c3"
        req = self._get('/events/%(event_id)s' % {'event_id': event_id})

        engine_resp = {
            "action": "create",
            "cluster_id": None,
            "id": "2d255b9c-8f36-41a2-a137-c0175ccc29c3",
            "level": "20",
            "oid": "0df0931b-e251-4f2e-8719-4ebfda3627ba",
            "oname": "node009",
            "otype": "NODE",
            "project": "6e18cc2bdbeb48a5b3cad2dc499f6804",
            "status": "CREATING",
            "status_reason": "Initializing",
            "timestamp": "2015-03-05T08:53:15.000000",
            "user": "a21ded6060534d99840658a777c2af5a"
        }

        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
                                     return_value=engine_resp)
        response = self.controller.get(req, event_id=event_id)

        mock_call.assert_called_once_with(
            req.context, ('event_get', {'identity': event_id}))

        expected = {'event': engine_resp}
        self.assertEqual(expected, response)

    def test_event_get_not_found(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'get', True)
        event_id = 'non-existent-event'
        req = self._get('/events/%(event_id)s' % {'event_id': event_id})

        error = senlin_exc.ResourceNotFound(type='event', id=event_id)
        mock_call = self.patchobject(rpc_client.EngineClient, 'call')
        mock_call.side_effect = shared.to_remote_error(error)

        resp = shared.request_with_middleware(fault.FaultWrapper,
                                              self.controller.get,
                                              req, event_id=event_id)

        self.assertEqual(404, resp.json['code'])
        self.assertEqual('ResourceNotFound', resp.json['error']['type'])

    def test_event_get_denied_policy(self, mock_enforce):
        self._mock_enforce_setup(mock_enforce, 'get', False)
        event_id = 'non-existent-event'
        req = self._get('/events/%(event_id)s' % {'event_id': event_id})

        resp = shared.request_with_middleware(fault.FaultWrapper,
                                              self.controller.get,
                                              req, event_id=event_id)

        self.assertEqual(403, resp.status_int)
        self.assertIn('403 Forbidden', six.text_type(resp))
