# Copyright 2019 Google LLC
#
# 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 kfp
from kfp.dsl import PipelineParam, ResourceOp
from kubernetes import client as k8s_client
import unittest


class TestResourceOp(unittest.TestCase):

    def test_basic(self):
        """Test basic usage."""
        def my_pipeline(param):
            resource_metadata = k8s_client.V1ObjectMeta(
                name="my-resource"
            )
            k8s_resource = k8s_client.V1PersistentVolumeClaim(
                api_version="v1",
                kind="PersistentVolumeClaim",
                metadata=resource_metadata
            )
            res = ResourceOp(
                name="resource",
                k8s_resource=k8s_resource,
                success_condition=param,
                attribute_outputs={"test": "attr"}
            )

            self.assertCountEqual(
                [x.name for x in res.inputs], ["param"]
            )
            self.assertEqual(res.name, "resource")
            self.assertEqual(
                res.resource.success_condition,
                param
            )
            self.assertEqual(res.resource.action, "create")
            self.assertEqual(res.resource.failure_condition, None)
            self.assertEqual(res.resource.manifest, None)
            expected_attribute_outputs = {
                "manifest": "{}",
                "name": "{.metadata.name}",
                "test": "attr"
            }
            self.assertEqual(res.attribute_outputs, expected_attribute_outputs)
            expected_outputs = {
                "manifest": PipelineParam(name="manifest", op_name=res.name),
                "name": PipelineParam(name="name", op_name=res.name),
                "test": PipelineParam(name="test", op_name=res.name),
            }
            self.assertEqual(res.outputs, expected_outputs)
            self.assertEqual(
                res.output,
                PipelineParam(name="test", op_name=res.name)
            )
            self.assertEqual(res.dependent_names, [])

        kfp.compiler.Compiler()._compile(my_pipeline)

    def test_delete(self):
        """Test delete method."""
        param = PipelineParam("param")
        k8s_resource = {"apiVersion": "version",
                        "kind": "CustomResource",
                        "metadata": {"name": "my-resource"}}
        res = ResourceOp(name="resource",
                         k8s_resource=k8s_resource,
                         success_condition=param,
                         attribute_outputs={"test": "attr"})

        delete_res = res.delete()

        expected_name = str(res.outputs['name'])

        self.assertEqual(delete_res.command,
                         ['kubectl', 'delete', 'CustomResource', expected_name,
                          '--ignore-not-found', '--output', 'name',
                          '--wait=false'])
        self.assertEqual(delete_res.outputs, {})