# -*- coding: utf8 -*-
#
#    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 contextlib

from django.core import urlresolvers
from mock import patch, call  # noqa
from openstack_dashboard.test.test_data import utils

from tuskar_ui import api
from tuskar_ui.test import helpers as test
from tuskar_ui.test.test_data import heat_data
from tuskar_ui.test.test_data import tuskar_data


INDEX_URL = urlresolvers.reverse(
    'horizon:infrastructure:overview:index')
DEPLOY_URL = urlresolvers.reverse(
    'horizon:infrastructure:overview:deploy_confirmation')
DELETE_URL = urlresolvers.reverse(
    'horizon:infrastructure:overview:undeploy_confirmation')
TEST_DATA = utils.TestDataContainer()
heat_data.data(TEST_DATA)
tuskar_data.data(TEST_DATA)


@contextlib.contextmanager
def _mock_plan(**kwargs):
    plan = None

    params = {
        'spec_set': [
            'create',
            'delete',
            'get',
            'get_the_plan',
            'id',
            'update',
            'parameters',
            'role_list',
        ],
        'create.side_effect': lambda *args, **kwargs: plan,
        'delete.return_value': None,
        'get.side_effect': lambda *args, **kwargs: plan,
        'get_the_plan.side_effect': lambda *args, **kwargs: plan,
        'id': 1,
        'update.side_effect': lambda *args, **kwargs: plan,
        'role_list': [],
    }
    params.update(kwargs)
    with patch(
            'tuskar_ui.api.tuskar.OvercloudPlan', **params) as OvercloudPlan:
        plan = OvercloudPlan
        yield OvercloudPlan


class OverviewTests(test.BaseAdminViewTests):

    def test_index_stack_not_created(self):
        with contextlib.nested(
                _mock_plan(),
                patch('tuskar_ui.api.heat.Stack.list',
                      return_value=[]),
        ):
            res = self.client.get(INDEX_URL)
            request = api.tuskar.OvercloudPlan.get_the_plan. \
                call_args_list[0][0][0]
            self.assertListEqual(
                api.tuskar.OvercloudPlan.get_the_plan.call_args_list,
                [
                    call(request),
                    call(request),
                    call(request),
                ])
        self.assertTemplateUsed(
            res, 'infrastructure/overview/index.html')
        self.assertTemplateUsed(
            res, 'infrastructure/overview/_role_nodes.html')

    def test_index_stack_deployed(self):
        stack = api.heat.Stack(TEST_DATA.heatclient_stacks.first())

        with contextlib.nested(
                _mock_plan(),
                patch('tuskar_ui.api.heat.Stack.get_by_plan',
                      return_value=stack),
                patch('tuskar_ui.api.heat.Stack.events',
                      return_value=[]),
        ) as (OvercloudPlan, stack_get_mock, stack_events_mock):
            res = self.client.get(INDEX_URL)
            request = OvercloudPlan.get_the_plan.call_args_list[0][0][0]
            self.assertListEqual(
                OvercloudPlan.get_the_plan.call_args_list,
                [
                    call(request),
                    call(request),
                    call(request),
                ])

        self.assertTemplateUsed(
            res, 'infrastructure/overview/index.html')
        self.assertTemplateUsed(
            res, 'infrastructure/overview/_deployment_status.html')

    def test_index_stack_undeploy_in_progress(self):
        stack = api.heat.Stack(TEST_DATA.heatclient_stacks.first())

        with contextlib.nested(
                _mock_plan(),
                patch('tuskar_ui.api.heat.Stack.get_by_plan',
                      return_value=stack),
                patch('tuskar_ui.api.heat.Stack.is_deleting',
                      return_value=True),
                patch('tuskar_ui.api.heat.Stack.is_deployed',
                      return_value=False),
                patch('tuskar_ui.api.heat.Stack.events',
                      return_value=[]),
        ):
            res = self.client.get(INDEX_URL)

        self.assertTemplateUsed(
            res, 'infrastructure/overview/index.html')
        self.assertTemplateUsed(
            res, 'infrastructure/overview/_deployment_status.html')

    def test_deploy_get(self):
        with _mock_plan():
            res = self.client.get(DEPLOY_URL)
        self.assertTemplateUsed(
            res, 'infrastructure/overview/deploy_confirmation.html')

    def test_delete_get(self):
        stack = api.heat.Stack(TEST_DATA.heatclient_stacks.first())

        with contextlib.nested(
                _mock_plan(),
                patch('tuskar_ui.api.heat.Stack.get_by_plan',
                      return_value=stack),
        ):
            res = self.client.get(DELETE_URL)
        self.assertTemplateUsed(
            res, 'infrastructure/overview/undeploy_confirmation.html')

    def test_delete_post(self):
        stack = api.heat.Stack(TEST_DATA.heatclient_stacks.first())

        with contextlib.nested(
                _mock_plan(),
                patch('tuskar_ui.api.heat.Stack.get_by_plan',
                      return_value=stack),
        ):
            res = self.client.post(DELETE_URL)
        self.assertRedirectsNoFollow(res, INDEX_URL)