# Copyright 2015 OpenStack Foundation
# All Rights Reserved.
#
#    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 datetime

from unittest import mock

from oslo_utils import timeutils

from watcher import objects
from watcher.common import exception
from watcher.common import utils as w_utils
from watcher.db.sqlalchemy import api as db_api
from watcher.tests.unit.db import base
from watcher.tests.unit.db import utils


class TestAuditTemplateObject(base.DbTestCase):
    goal_id = 1

    goal_data = utils.get_test_goal(
        id=goal_id, uuid=w_utils.generate_uuid(), name="DUMMY"
    )

    scenarios = [
        (
            'non_eager',
            dict(
                eager=False,
                fake_audit_template=utils.get_test_audit_template(
                    created_at=timeutils.utcnow(), goal_id=goal_id
                ),
            ),
        ),
        (
            'eager_with_non_eager_load',
            dict(
                eager=True,
                fake_audit_template=utils.get_test_audit_template(
                    created_at=timeutils.utcnow(), goal_id=goal_id
                ),
            ),
        ),
        (
            'eager_with_eager_load',
            dict(
                eager=True,
                fake_audit_template=utils.get_test_audit_template(
                    created_at=timeutils.utcnow(),
                    goal_id=goal_id,
                    goal=goal_data,
                ),
            ),
        ),
    ]

    def setUp(self):
        super().setUp()
        self.fake_goal = utils.create_test_goal(**self.goal_data)

    def eager_load_audit_template_assert(self, audit_template, goal):
        if self.eager:
            self.assertIsNotNone(audit_template.goal)
            fields_to_check = set(
                super(objects.Goal, objects.Goal).fields
            ).symmetric_difference(objects.Goal.fields)
            db_data = {
                k: v for k, v in goal.as_dict().items() if k in fields_to_check
            }
            object_data = {
                k: v
                for k, v in audit_template.goal.as_dict().items()
                if k in fields_to_check
            }
            self.assertEqual(db_data, object_data)

    @mock.patch.object(db_api.Connection, 'get_audit_template_by_id')
    def test_get_by_id(self, mock_get_audit_template):
        mock_get_audit_template.return_value = self.fake_audit_template
        audit_template_id = self.fake_audit_template['id']
        audit_template = objects.AuditTemplate.get(
            self.context, audit_template_id, eager=self.eager
        )
        mock_get_audit_template.assert_called_once_with(
            self.context, audit_template_id, eager=self.eager
        )
        self.assertEqual(self.context, audit_template._context)
        self.assertEqual(
            self.fake_audit_template['default_parameters'],
            audit_template.default_parameters,
        )
        self.eager_load_audit_template_assert(audit_template, self.fake_goal)

    @mock.patch.object(db_api.Connection, 'get_audit_template_by_uuid')
    def test_get_by_uuid(self, mock_get_audit_template):
        mock_get_audit_template.return_value = self.fake_audit_template
        uuid = self.fake_audit_template['uuid']
        audit_template = objects.AuditTemplate.get(
            self.context, uuid, eager=self.eager
        )
        mock_get_audit_template.assert_called_once_with(
            self.context, uuid, eager=self.eager
        )
        self.assertEqual(self.context, audit_template._context)
        self.assertEqual(
            self.fake_audit_template['default_parameters'],
            audit_template.default_parameters,
        )
        self.eager_load_audit_template_assert(audit_template, self.fake_goal)

    @mock.patch.object(db_api.Connection, 'get_audit_template_by_name')
    def test_get_by_name(self, mock_get_audit_template):
        mock_get_audit_template.return_value = self.fake_audit_template
        name = self.fake_audit_template['name']
        audit_template = objects.AuditTemplate.get_by_name(
            self.context, name, eager=self.eager
        )
        mock_get_audit_template.assert_called_once_with(
            self.context, name, eager=self.eager
        )
        self.assertEqual(self.context, audit_template._context)
        self.assertEqual(
            self.fake_audit_template['default_parameters'],
            audit_template.default_parameters,
        )
        self.eager_load_audit_template_assert(audit_template, self.fake_goal)

    def test_get_bad_id_and_uuid(self):
        self.assertRaises(
            exception.InvalidIdentity,
            objects.AuditTemplate.get,
            self.context,
            'not-a-uuid',
            eager=self.eager,
        )

    @mock.patch.object(db_api.Connection, 'get_audit_template_list')
    def test_list(self, mock_get_list):
        mock_get_list.return_value = [self.fake_audit_template]
        audit_templates = objects.AuditTemplate.list(
            self.context, eager=self.eager
        )
        mock_get_list.assert_called_once_with(
            self.context,
            eager=self.eager,
            filters=None,
            limit=None,
            marker=None,
            sort_dir=None,
            sort_key=None,
        )
        self.assertEqual(1, len(audit_templates))
        self.assertIsInstance(audit_templates[0], objects.AuditTemplate)
        self.assertEqual(self.context, audit_templates[0]._context)
        self.assertEqual(
            self.fake_audit_template['default_parameters'],
            audit_templates[0].default_parameters,
        )
        for audit_template in audit_templates:
            self.eager_load_audit_template_assert(
                audit_template, self.fake_goal
            )

    @mock.patch.object(db_api.Connection, 'update_audit_template')
    @mock.patch.object(db_api.Connection, 'get_audit_template_by_uuid')
    def test_save(self, mock_get_audit_template, mock_update_audit_template):
        mock_get_audit_template.return_value = self.fake_audit_template
        fake_saved_audit_template = self.fake_audit_template.copy()
        fake_saved_audit_template['updated_at'] = timeutils.utcnow()
        mock_update_audit_template.return_value = fake_saved_audit_template
        uuid = self.fake_audit_template['uuid']
        audit_template = objects.AuditTemplate.get_by_uuid(
            self.context, uuid, eager=self.eager
        )
        audit_template.goal_id = self.fake_goal.id
        audit_template.save()

        mock_get_audit_template.assert_called_once_with(
            self.context, uuid, eager=self.eager
        )
        mock_update_audit_template.assert_called_once_with(
            uuid, {'goal_id': self.fake_goal.id}
        )
        self.assertEqual(self.context, audit_template._context)
        self.assertEqual(
            self.fake_audit_template['default_parameters'],
            audit_template.default_parameters,
        )
        self.eager_load_audit_template_assert(audit_template, self.fake_goal)

    @mock.patch.object(db_api.Connection, 'update_audit_template')
    @mock.patch.object(db_api.Connection, 'get_audit_template_by_uuid')
    def test_save_default_parameters(
        self, mock_get_audit_template, mock_update_audit_template
    ):
        new_params = {'threshold': 0.75}
        mock_get_audit_template.return_value = self.fake_audit_template
        fake_saved = self.fake_audit_template.copy()
        fake_saved['updated_at'] = timeutils.utcnow()
        fake_saved['default_parameters'] = new_params
        mock_update_audit_template.return_value = fake_saved
        uuid = self.fake_audit_template['uuid']
        audit_template = objects.AuditTemplate.get_by_uuid(
            self.context, uuid, eager=self.eager
        )
        audit_template.default_parameters = new_params
        audit_template.save()

        mock_update_audit_template.assert_called_once_with(
            uuid, {'default_parameters': new_params}
        )
        self.assertEqual(new_params, audit_template.default_parameters)

    @mock.patch.object(db_api.Connection, 'get_audit_template_by_uuid')
    def test_refresh(self, mock_get_audit_template):
        returns = [
            dict(self.fake_audit_template, name="first name"),
            dict(self.fake_audit_template, name="second name"),
        ]
        mock_get_audit_template.side_effect = returns
        uuid = self.fake_audit_template['uuid']
        expected = [
            mock.call(self.context, uuid, eager=self.eager),
            mock.call(self.context, uuid, eager=self.eager),
        ]
        audit_template = objects.AuditTemplate.get(
            self.context, uuid, eager=self.eager
        )
        self.assertEqual("first name", audit_template.name)
        audit_template.refresh(eager=self.eager)
        self.assertEqual("second name", audit_template.name)
        self.assertEqual(expected, mock_get_audit_template.call_args_list)
        self.assertEqual(self.context, audit_template._context)
        self.eager_load_audit_template_assert(audit_template, self.fake_goal)


class TestCreateDeleteAuditTemplateObject(base.DbTestCase):
    def setUp(self):
        super().setUp()
        self.fake_audit_template = utils.get_test_audit_template(
            created_at=timeutils.utcnow()
        )

    @mock.patch.object(db_api.Connection, 'create_audit_template')
    def test_create(self, mock_create_audit_template):
        goal = utils.create_test_goal()
        self.fake_audit_template['goal_id'] = goal.id
        mock_create_audit_template.return_value = self.fake_audit_template
        audit_template = objects.AuditTemplate(
            self.context, **self.fake_audit_template
        )
        audit_template.create()
        expected_audit_template = self.fake_audit_template.copy()
        expected_audit_template['created_at'] = expected_audit_template[
            'created_at'
        ].replace(tzinfo=datetime.timezone.utc)
        mock_create_audit_template.assert_called_once_with(
            expected_audit_template
        )
        self.assertEqual(self.context, audit_template._context)
        self.assertEqual(
            self.fake_audit_template['default_parameters'],
            audit_template.default_parameters,
        )

    @mock.patch.object(db_api.Connection, 'create_audit_template')
    def test_create_with_default_parameters(self, mock_create_audit_template):
        default_params = {'threshold': 0.5, 'period': 300}
        goal = utils.create_test_goal()
        self.fake_audit_template['goal_id'] = goal.id
        self.fake_audit_template['default_parameters'] = default_params
        mock_create_audit_template.return_value = self.fake_audit_template
        audit_template = objects.AuditTemplate(
            self.context, **self.fake_audit_template
        )
        audit_template.create()
        expected_audit_template = self.fake_audit_template.copy()
        expected_audit_template['created_at'] = expected_audit_template[
            'created_at'
        ].replace(tzinfo=datetime.timezone.utc)
        mock_create_audit_template.assert_called_once_with(
            expected_audit_template
        )
        self.assertEqual(default_params, audit_template.default_parameters)

    @mock.patch.object(db_api.Connection, 'soft_delete_audit_template')
    @mock.patch.object(db_api.Connection, 'get_audit_template_by_uuid')
    def test_soft_delete(
        self, m_get_audit_template, m_soft_delete_audit_template
    ):
        m_get_audit_template.return_value = self.fake_audit_template
        fake_deleted_audit_template = self.fake_audit_template.copy()
        fake_deleted_audit_template['deleted_at'] = timeutils.utcnow()
        m_soft_delete_audit_template.return_value = fake_deleted_audit_template

        expected_audit_template = fake_deleted_audit_template.copy()
        expected_audit_template['created_at'] = expected_audit_template[
            'created_at'
        ].replace(tzinfo=datetime.timezone.utc)
        expected_audit_template['deleted_at'] = expected_audit_template[
            'deleted_at'
        ].replace(tzinfo=datetime.timezone.utc)
        del expected_audit_template['goal']
        del expected_audit_template['strategy']

        uuid = self.fake_audit_template['uuid']
        audit_template = objects.AuditTemplate.get_by_uuid(self.context, uuid)
        audit_template.soft_delete()
        m_get_audit_template.assert_called_once_with(
            self.context, uuid, eager=False
        )
        m_soft_delete_audit_template.assert_called_once_with(uuid)
        self.assertEqual(self.context, audit_template._context)
        self.assertEqual(expected_audit_template, audit_template.as_dict())

    @mock.patch.object(db_api.Connection, 'destroy_audit_template')
    @mock.patch.object(db_api.Connection, 'get_audit_template_by_uuid')
    def test_destroy(
        self, mock_get_audit_template, mock_destroy_audit_template
    ):
        mock_get_audit_template.return_value = self.fake_audit_template
        uuid = self.fake_audit_template['uuid']
        audit_template = objects.AuditTemplate.get_by_uuid(self.context, uuid)
        audit_template.destroy()
        mock_get_audit_template.assert_called_once_with(
            self.context, uuid, eager=False
        )
        mock_destroy_audit_template.assert_called_once_with(uuid)
        self.assertEqual(self.context, audit_template._context)
