# Copyright 2014 Amazon.com, Inc. or its affiliates. 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. A copy of
# the License is located at
#
# https://aws.amazon.com/apache2.0/
#
# or in the 'license' file accompanying this file. This file 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 pytest

from boto3.utils import ServiceContext
from boto3.resources.action import BatchAction, ServiceAction, WaiterAction
from boto3.resources.base import ResourceMeta
from boto3.resources.model import Action, Waiter
from tests import BaseTestCase, mock


class TestServiceActionCall(BaseTestCase):
    def setUp(self):
        super(TestServiceActionCall, self).setUp()

        self.action_def = {
            'request': {
                'operation': 'GetFrobs',
                'params': []
            }
        }

    @property
    def action(self):
        return Action('test', self.action_def, {})

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={})
    def test_service_action_creates_params(self, params_mock):
        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())

        action = ServiceAction(self.action)

        action(resource, foo=1)

        assert params_mock.called

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={'bar': 'baz'})
    def test_service_action_calls_operation(self, params_mock):
        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())
        operation = resource.meta.client.get_frobs
        operation.return_value = 'response'

        action = ServiceAction(self.action)

        response = action(resource, foo=1)

        operation.assert_called_with(foo=1, bar='baz')
        assert response == 'response'

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={})
    @mock.patch('boto3.resources.action.RawHandler')
    def test_service_action_calls_raw_handler(self, handler_mock, params_mock):
        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())
        operation = resource.meta.client.get_frobs
        operation.return_value = 'response'

        action = ServiceAction(self.action)

        handler_mock.return_value.return_value = 'response'

        action(resource)

        handler_mock.assert_called_with(None)
        handler_mock.return_value.assert_called_with(resource, {}, 'response')

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={})
    @mock.patch('boto3.resources.action.ResourceHandler')
    def test_service_action_calls_resource_handler(self, handler_mock, params_mock):
        self.action_def['resource'] = {
            'type': 'Frob',
            'path': 'Container'
        }

        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())
        operation = resource.meta.client.get_frobs
        operation.return_value = 'response'

        factory = mock.Mock()
        resource_defs = {}
        service_model = mock.Mock()

        action_model = self.action

        service_context = ServiceContext(
            service_name='test',
            service_model=service_model,
            resource_json_definitions=resource_defs,
            service_waiter_model=None
        )

        action = ServiceAction(
            action_model=action_model, factory=factory,
            service_context=service_context
        )

        handler_mock.return_value.return_value = 'response'

        action(resource)

        handler_mock.assert_called_with(
            search_path='Container', factory=factory,
            resource_model=action_model.resource,
            service_context=service_context,
            operation_name='GetFrobs'
        )

    def test_service_action_call_positional_argument(self):
        def _api_call(*args, **kwargs):
            if args:
                raise TypeError(
                    "%s() only accepts keyword arguments." % 'get_frobs')

        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())
        resource.meta.client.get_frobs = _api_call

        action = ServiceAction(self.action)

        with pytest.raises(TypeError):
            action(resource, 'item1')


class TestWaiterActionCall(BaseTestCase):
    def setUp(self):
        super(TestWaiterActionCall, self).setUp()
        self.waiter_resource_name = 'wait_until_exists'
        self.waiter_def = {
            "waiterName": "FrobExists",
            "params": [
                {"target": "Frob", "sourceType": "identifier",
                 "source": "Name"}]
        }

    @property
    def waiter(self):
        return Waiter('test', self.waiter_def)

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={})
    def test_service_waiter_creates_params(self, params_mock):
        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())

        action = WaiterAction(self.waiter, self.waiter_resource_name)

        action(resource, foo=1)

        assert params_mock.called

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={'bar': 'baz'})
    def test_service_action_calls_operation(self, params_mock):
        resource = mock.Mock()
        resource.meta = ResourceMeta('test', client=mock.Mock())
        get_waiter = resource.meta.client.get_waiter
        mock_waiter = mock.Mock()
        get_waiter.return_value = mock_waiter

        action = WaiterAction(self.waiter, self.waiter_resource_name)

        action(resource, foo=1)

        get_waiter.assert_called_with('frob_exists')
        mock_waiter.wait.assert_called_with(foo=1, bar='baz')


class TestBatchActionCall(BaseTestCase):
    def setUp(self):
        super(TestBatchActionCall, self).setUp()

        self.action_def = {
            'request': {
                'operation': 'GetFrobs',
                'params': []
            }
        }

    @property
    def model(self):
        return Action('test', self.action_def, {})

    def test_batch_action_gets_pages_from_collection(self):
        collection = mock.Mock()
        collection.pages.return_value = []
        action = BatchAction(self.model)

        action(collection)

        collection.pages.assert_called_with()

    def test_batch_action_creates_parameters_from_items(self):
        self.action_def['request']['params'] = [
            {'target': 'Bucket', 'source': 'data', 'path': 'BucketName'},
            {'target': 'Delete.Objects[].Key', 'source': 'data',
             'path': 'Key'}
        ]

        client = mock.Mock()

        item1 = mock.Mock()
        item1.meta = ResourceMeta('test', client=client, data={
            'BucketName': 'bucket',
            'Key': 'item1'
        })

        item2 = mock.Mock()
        item2.meta = ResourceMeta('test', client=client, data={
            'BucketName': 'bucket',
            'Key': 'item2'
        })

        collection = mock.Mock()
        collection.pages.return_value = [[item1, item2]]

        action = BatchAction(self.model)
        action(collection)

        client.get_frobs.assert_called_with(Bucket='bucket', Delete={
            'Objects': [
                {'Key': 'item1'},
                {'Key': 'item2'}
            ]
        })

    @mock.patch('boto3.resources.action.create_request_parameters',
                return_value={})
    def test_batch_action_skips_operation(self, crp_mock):
        # In this test we have an item from the collection, but no
        # parameters are set up. Because of this, we do NOT call
        # the batch operation.
        client = mock.Mock()

        item = mock.Mock()
        item.meta = ResourceMeta('test', client=client)

        collection = mock.Mock()
        collection.pages.return_value = [[item]]

        model = self.model
        action = BatchAction(model)
        action(collection)

        crp_mock.assert_called_with(item, model.request, params={}, index=0)
        client.get_frobs.assert_not_called()

    @mock.patch('boto3.resources.action.create_request_parameters')
    def test_batch_action_calls_operation(self, crp_mock):
        # In this test we have an item and parameters, so the call
        # to the batch operation should be made.
        def side_effect(resource, model, params=None, index=None):
            params['foo'] = 'bar'

        crp_mock.side_effect = side_effect

        client = mock.Mock()

        item = mock.Mock()
        item.meta = ResourceMeta('test', client=client)

        collection = mock.Mock()
        collection.pages.return_value = [[item]]

        model = self.model
        action = BatchAction(model)
        action(collection)

        # Here the call is made with params={}, but they are edited
        # in-place so we need to compare to the final edited value.
        crp_mock.assert_called_with(item, model.request,
                                    params={'foo': 'bar'}, index=0)
        client.get_frobs.assert_called_with(foo='bar')

    @mock.patch('boto3.resources.action.create_request_parameters')
    def test_batch_action_with_positional_argument(self, crp_mock):
        def side_effect(resource, model, params=None, index=None):
            params['foo'] = 'bar'

        def _api_call(*args, **kwargs):
            if args:
                raise TypeError(
                    "%s() only accepts keyword arguments." % 'get_frobs')

        crp_mock.side_effect = side_effect

        client = mock.Mock()
        client.get_frobs = _api_call

        item = mock.Mock()
        item.meta = ResourceMeta('test', client=client)

        collection = mock.Mock()
        collection.pages.return_value = [[item]]

        model = self.model
        action = BatchAction(model)

        with pytest.raises(TypeError):
            action(collection, 'item1')