# Copyright 2018 The Kubeflow Authors
#
# 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 unittest

from kfp.deprecated.components.structures import ComponentSpec
from kfp.deprecated.components.structures import InputSpec
from kfp.deprecated.dsl import ContainerOp
from kfp.deprecated.dsl import Pipeline
from kfp.deprecated.dsl import pipeline
from kfp.deprecated.dsl._metadata import _extract_pipeline_metadata
from kfp.deprecated.dsl.types import Integer


class TestPipeline(unittest.TestCase):

    def test_basic(self):
        """Test basic usage."""
        with Pipeline('somename') as p:
            self.assertTrue(Pipeline.get_default_pipeline() is not None)
            op1 = ContainerOp(name='op1', image='image')
            op2 = ContainerOp(name='op2', image='image')

        self.assertTrue(Pipeline.get_default_pipeline() is None)
        self.assertEqual(p.ops['op1'].name, 'op1')
        self.assertEqual(p.ops['op2'].name, 'op2')

    def test_nested_pipelines(self):
        """Test nested pipelines."""
        with self.assertRaises(Exception):
            with Pipeline('somename1') as p1:
                with Pipeline('somename2') as p2:
                    pass

    def test_decorator(self):
        """Test @pipeline decorator."""

        @pipeline(name='p1', description='description1')
        def my_pipeline1():
            pass

        @pipeline(name='p2', description='description2')
        def my_pipeline2():
            pass

        self.assertEqual(my_pipeline1._component_human_name, 'p1')
        self.assertEqual(my_pipeline2._component_human_name, 'p2')
        self.assertEqual(my_pipeline1._component_description, 'description1')
        self.assertEqual(my_pipeline2._component_description, 'description2')

    def test_decorator_metadata(self):
        """Test @pipeline decorator with metadata."""

        @pipeline(name='p1', description='description1')
        def my_pipeline1(
                a: {'Schema': {
                    'file_type': 'csv'
                }} = 'good',
                b: Integer() = 12):
            pass

        golden_meta = ComponentSpec(
            name='p1', description='description1', inputs=[])
        golden_meta.inputs.append(
            InputSpec(
                name='a',
                type={'Schema': {
                    'file_type': 'csv'
                }},
                default='good',
                optional=True))
        golden_meta.inputs.append(
            InputSpec(
                name='b',
                type={
                    'Integer': {
                        'openapi_schema_validator': {
                            "type": "integer"
                        }
                    }
                },
                default="12",
                optional=True))

        pipeline_meta = _extract_pipeline_metadata(my_pipeline1)
        self.assertEqual(pipeline_meta, golden_meta)