# Copyright 2015 - StackStorm, Inc.
#
#    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 collections
import copy
import os.path

from oslo_serialization import jsonutils

import pkg_resources as pkg
from urllib import parse
from urllib import request

from mistralclient.api import base as api_base
from mistralclient.api.v2 import environments
from mistralclient.tests.unit.v2 import base
from mistralclient import utils


ENVIRONMENT = {
    'name': 'env1',
    'description': 'Test Environment #1',
    'scope': 'private',
    'variables': {
        'server': 'localhost'
    }
}

URL_TEMPLATE = '/environments'
URL_TEMPLATE_NAME = '/environments/%s'


class TestEnvironmentsV2(base.BaseClientV2Test):

    def test_create(self):
        data = copy.deepcopy(ENVIRONMENT)

        self.requests_mock.post(self.TEST_URL + URL_TEMPLATE,
                                status_code=201,
                                json=data)
        env = self.environments.create(**data)

        self.assertIsNotNone(env)

        expected_data = copy.deepcopy(data)
        expected_data['variables'] = jsonutils.dumps(
            expected_data['variables'])

        self.assertEqual(expected_data, self.requests_mock.last_request.json())

    def test_create_with_json_file_uri(self):
        # The contents of env_v2.json must be equivalent to ENVIRONMENT
        path = pkg.resource_filename(
            'mistralclient',
            'tests/unit/resources/env_v2.json'
        )
        path = os.path.abspath(path)

        # Convert the file path to file URI
        uri = parse.urljoin('file:', request.pathname2url(path))
        data = collections.OrderedDict(
            utils.load_content(
                utils.get_contents_if_file(uri)
            )
        )

        self.requests_mock.post(self.TEST_URL + URL_TEMPLATE,
                                status_code=201,
                                json=data)
        file_input = {'file': uri}
        env = self.environments.create(**file_input)

        self.assertIsNotNone(env)

        expected_data = copy.deepcopy(data)
        expected_data['variables'] = jsonutils.dumps(
            expected_data['variables'])

        self.assertEqual(expected_data, self.requests_mock.last_request.json())

    def test_create_without_name(self):
        data = copy.deepcopy(ENVIRONMENT)
        data.pop('name')

        e = self.assertRaises(api_base.APIException,
                              self.environments.create,
                              **data)

        self.assertEqual(400, e.error_code)

    def test_update(self):
        data = copy.deepcopy(ENVIRONMENT)

        self.requests_mock.put(self.TEST_URL + URL_TEMPLATE, json=data)
        env = self.environments.update(**data)

        self.assertIsNotNone(env)

        expected_data = copy.deepcopy(data)
        expected_data['variables'] = jsonutils.dumps(
            expected_data['variables'])

        self.assertEqual(expected_data, self.requests_mock.last_request.json())

    def test_update_with_yaml_file(self):
        # The contents of env_v2.json must be equivalent to ENVIRONMENT
        path = pkg.resource_filename(
            'mistralclient',
            'tests/unit/resources/env_v2.json'
        )
        data = collections.OrderedDict(
            utils.load_content(
                utils.get_contents_if_file(path)
            )
        )
        self.requests_mock.put(self.TEST_URL + URL_TEMPLATE, json=data)

        file_input = {'file': path}
        env = self.environments.update(**file_input)

        self.assertIsNotNone(env)

        expected_data = copy.deepcopy(data)
        expected_data['variables'] = jsonutils.dumps(
            expected_data['variables'])

        self.assertEqual(expected_data, self.requests_mock.last_request.json())

    def test_update_without_name(self):
        data = copy.deepcopy(ENVIRONMENT)
        data.pop('name')

        e = self.assertRaises(api_base.APIException,
                              self.environments.update,
                              **data)

        self.assertEqual(400, e.error_code)

    def test_list(self):
        self.requests_mock.get(self.TEST_URL + URL_TEMPLATE,
                               json={'environments': [ENVIRONMENT]})

        environment_list = self.environments.list()

        self.assertEqual(1, len(environment_list))

        env = environment_list[0]

        self.assertDictEqual(
            environments.Environment(self.environments, ENVIRONMENT).to_dict(),
            env.to_dict()
        )

    def test_get(self):
        self.requests_mock.get(self.TEST_URL + URL_TEMPLATE_NAME % 'env',
                               json=ENVIRONMENT)

        env = self.environments.get('env')

        self.assertIsNotNone(env)
        self.assertDictEqual(
            environments.Environment(self.environments, ENVIRONMENT).to_dict(),
            env.to_dict()
        )

    def test_delete(self):
        self.requests_mock.delete(self.TEST_URL + URL_TEMPLATE_NAME % 'env',
                                  status_code=204)

        self.environments.delete('env')