# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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.
from __future__ import annotations

from unittest import mock
from unittest.mock import MagicMock

import pytest

from airflow.models import DAG, DagBag
from airflow.providers.common.compat.sdk import AirflowException
from airflow.providers.google.cloud.operators.looker import (
    DataStudioStartPdtBuildOperator,
    LookerStartPdtBuildOperator,
)
from airflow.utils.timezone import datetime

from tests_common.test_utils.db import clear_db_runs, clear_db_xcom

OPERATOR_PATH = "airflow.providers.google.cloud.operators.looker.{}"

TASK_ID = "task-id"
LOOKER_CONN_ID = "test-conn"
MODEL = "test_model"
VIEW = "test_view"

TEST_DAG_ID = "test-looker-operators"
DEFAULT_DATE = datetime(2020, 1, 1)
TEST_JOB_ID = "123"


def test_data_studio_aliases():
    assert DataStudioStartPdtBuildOperator is LookerStartPdtBuildOperator


class LookerTestBase:
    @classmethod
    def setUpClass(cls):
        cls.dagbag = DagBag(dag_folder="/dev/null")
        cls.dag = DAG(TEST_DAG_ID, default_args={"owner": "airflow", "start_date": DEFAULT_DATE})

    def setup_method(self):
        self.mock_ti = MagicMock()
        self.mock_context = {"ti": self.mock_ti}

    def tearDown(self):
        self.mock_ti = MagicMock()
        self.mock_context = {"ti": self.mock_ti}

    @classmethod
    def tearDownClass(cls):
        clear_db_runs()
        clear_db_xcom()


class TestLookerStartPdtBuildOperator(LookerTestBase):
    @mock.patch(OPERATOR_PATH.format("LookerHook"))
    def test_execute(self, mock_hook):
        # mock return vals from hook
        mock_hook.return_value.start_pdt_build.return_value.materialization_id = TEST_JOB_ID
        mock_hook.return_value.wait_for_job.return_value = None

        # run task in mock context (asynchronous=False)
        task = LookerStartPdtBuildOperator(
            task_id=TASK_ID,
            looker_conn_id=LOOKER_CONN_ID,
            model=MODEL,
            view=VIEW,
        )
        task.execute(context=self.mock_context)

        # assertions

        # hook's constructor called once
        mock_hook.assert_called_once_with(looker_conn_id=LOOKER_CONN_ID)

        # hook.start_pdt_build called once
        mock_hook.return_value.start_pdt_build.assert_called_once_with(
            model=MODEL,
            view=VIEW,
            query_params=None,
        )

        # hook.wait_for_job called once
        mock_hook.return_value.wait_for_job.assert_called_once_with(
            materialization_id=TEST_JOB_ID,
            wait_time=10,
            timeout=None,
        )

    @mock.patch(OPERATOR_PATH.format("LookerHook"))
    def test_execute_async(self, mock_hook):
        # mock return vals from hook
        mock_hook.return_value.start_pdt_build.return_value.materialization_id = TEST_JOB_ID
        mock_hook.return_value.wait_for_job.return_value = None

        # run task in mock context (asynchronous=True)
        task = LookerStartPdtBuildOperator(
            task_id=TASK_ID,
            looker_conn_id=LOOKER_CONN_ID,
            model=MODEL,
            view=VIEW,
            asynchronous=True,
        )
        task.execute(context=self.mock_context)

        # assertions

        # hook's constructor called once
        mock_hook.assert_called_once_with(looker_conn_id=LOOKER_CONN_ID)

        # hook.start_pdt_build called once
        mock_hook.return_value.start_pdt_build.assert_called_once_with(
            model=MODEL,
            view=VIEW,
            query_params=None,
        )

        # hook.wait_for_job NOT called
        mock_hook.return_value.wait_for_job.assert_not_called()

    @mock.patch(OPERATOR_PATH.format("LookerHook"))
    def test_on_kill(self, mock_hook):
        # mock return vals from hook
        mock_hook.return_value.start_pdt_build.return_value.materialization_id = TEST_JOB_ID
        mock_hook.return_value.wait_for_job.return_value = None

        # run task in mock context (cancel_on_kill=False)
        task = LookerStartPdtBuildOperator(
            task_id=TASK_ID,
            looker_conn_id=LOOKER_CONN_ID,
            model=MODEL,
            view=VIEW,
            cancel_on_kill=False,
        )
        task.execute(context=self.mock_context)

        # kill and assert build is NOT canceled
        task.on_kill()
        mock_hook.return_value.stop_pdt_build.assert_not_called()

        # alternatively, kill and assert build is canceled
        task.cancel_on_kill = True
        task.on_kill()
        mock_hook.return_value.stop_pdt_build.assert_called_once_with(materialization_id=TEST_JOB_ID)

    @mock.patch(OPERATOR_PATH.format("LookerHook"))
    def test_materialization_id_returned_as_empty_str(self, mock_hook):
        # mock return vals from hook
        mock_hook.return_value.start_pdt_build.return_value.materialization_id = ""
        mock_hook.return_value.wait_for_job.return_value = None

        # run task in mock context (asynchronous=False)
        task = LookerStartPdtBuildOperator(
            task_id=TASK_ID,
            looker_conn_id=LOOKER_CONN_ID,
            model=MODEL,
            view=VIEW,
        )

        # check AirflowException is raised
        with pytest.raises(
            AirflowException, match=f"No `materialization_id` was returned for model: {MODEL}, view: {VIEW}."
        ):
            task.execute(context=self.mock_context)
