# Copyright 2021-2023 H2020 TeraFlow (https://www.teraflow-h2020.eu/)
#
# 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 logging
import os
from unittest.mock import patch

import pytest

from common.Constants import (DEFAULT_GRPC_GRACE_PERIOD,
                              DEFAULT_GRPC_MAX_WORKERS)
from common.proto import dbscanserving_pb2 as dbscan
from common.proto.optical_attack_detector_pb2 import DetectionRequest
from opticalattackdetector.client.OpticalAttackDetectorClient import \
    OpticalAttackDetectorClient
from opticalattackdetector.Config import GRPC_SERVICE_PORT
from opticalattackdetector.service.OpticalAttackDetectorService import \
    OpticalAttackDetectorService

# from .example_objects import CONTEXT_ID, CONTEXT_ID_2, SERVICE_DEV1_DEV2

port = 10000 + GRPC_SERVICE_PORT  # avoid privileged ports

LOGGER = logging.getLogger(__name__)
LOGGER.setLevel(logging.DEBUG)


@pytest.fixture(scope="session")
def optical_attack_detector_service():
    with patch.dict(
        os.environ,
        {
            "OPTICALATTACKDETECTORSERVICE_SERVICE_HOST": "127.0.0.1",
            "OPTICALATTACKDETECTORSERVICE_SERVICE_PORT_GRPC": str(port),
            "DBSCANSERVINGSERVICE_SERVICE_HOST": "127.0.0.1",
            "DBSCANSERVINGSERVICE_SERVICE_PORT_GRPC": str(port),
        },
        clear=True,
    ):
        _service = OpticalAttackDetectorService(
            port=port,
            max_workers=DEFAULT_GRPC_MAX_WORKERS,
            grace_period=DEFAULT_GRPC_GRACE_PERIOD,
        )
        # mocker_context_client = mock.patch('opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.context_client')
        # mocker_context_client.start()

        # mocker_influx_db = mock.patch('opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.influxdb_client')
        # mocker_influx_db.start()

        _service.start()
        yield _service
        _service.stop()
        # mocker_context_client.stop()
        # mocker_influx_db.stop()


@pytest.fixture(scope="session")
def optical_attack_detector_client(optical_attack_detector_service):
    with patch.dict(
        os.environ,
        {
            "OPTICALATTACKDETECTORSERVICE_SERVICE_HOST": "127.0.0.1",
            "OPTICALATTACKDETECTORSERVICE_SERVICE_PORT_GRPC": str(port),
            "DBSCANSERVINGSERVICE_SERVICE_HOST": "127.0.0.1",
            "DBSCANSERVINGSERVICE_SERVICE_PORT_GRPC": str(port),
        },
        clear=True,
    ):
        _client = OpticalAttackDetectorClient()
        yield _client
    _client.close()


def test_detect_attack(
    optical_attack_detector_client: OpticalAttackDetectorClient,
):
    message = dbscan.DetectionResponse()
    message.cluster_indices.extend([0, 1, -1, -1, -1])
    with patch(
        "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.attack_mitigator_client"
    ) as mitigator, patch(
        "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.monitoring_client"
    ) as monitoring, patch(
        "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.dbscanserving_client.Detect",
        # TODO: return dumb object with "cluster_indices" attribute
        # idea: create new response object
        return_value=message,
    ) as dbscanserving:
        request: DetectionRequest = DetectionRequest()
        request.service_id.context_id.context_uuid.uuid = ""
        request.service_id.service_uuid.uuid = str("")
        request.kpi_id.kpi_id.uuid = ""
        optical_attack_detector_client.DetectAttack(request)
        mitigator.NotifyAttack.assert_called_once()
        monitoring.IncludeKpi.assert_called_once()
        dbscanserving.assert_called_once()


# def test_detect_attack_with_context(
#     optical_attack_detector_client: OpticalAttackDetectorClient,
# ):
#     with patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.context_client"
#     ) as context, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.influxdb_client"
#     ) as influxdb:
#         # setting up the mock
#         cid_list = ContextIdList()
#         cid_list.context_ids.append(ContextId(**CONTEXT_ID))
#         context.ListContextIds.return_value = cid_list

#         # making the test
#         request = Empty()
#         optical_attack_detector_client.DetectAttack(request)

#         # checking behavior
#         context.ListContextIds.assert_called_once()
#         context.ListServices.assert_called_with(cid_list.context_ids[0])
#         influxdb.query.assert_called_once()


# def test_detect_attack_with_contexts(
#     optical_attack_detector_client: OpticalAttackDetectorClient,
# ):
#     with patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.context_client"
#     ) as context, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.influxdb_client"
#     ) as influxdb:
#         # setting up the mock
#         cid_list = ContextIdList()
#         cid_list.context_ids.append(ContextId(**CONTEXT_ID))
#         cid_list.context_ids.append(ContextId(**CONTEXT_ID_2))
#         context.ListContextIds.return_value = cid_list

#         # making the test
#         request = Empty()
#         optical_attack_detector_client.DetectAttack(request)

#         # checking behavior
#         context.ListContextIds.assert_called_once()
#         context.ListServices.assert_any_call(cid_list.context_ids[0])
#         context.ListServices.assert_any_call(cid_list.context_ids[1])
#         influxdb.query.assert_called_once()


# def test_detect_attack_with_service(
#     optical_attack_detector_client: OpticalAttackDetectorClient,
# ):
#     with patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.context_client"
#     ) as context, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.influxdb_client"
#     ) as influxdb, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.dbscanserving_client"
#     ) as dbscan:

#         # setting up the mock
#         cid_list = ContextIdList()
#         cid_list.context_ids.append(ContextId(**CONTEXT_ID))
#         context.ListContextIds.return_value = cid_list

#         service_list = ServiceList()
#         service_list.services.append(Service(**SERVICE_DEV1_DEV2))
#         context.ListServices.return_value = service_list

#         influxdb.query.return_value.get_points.return_value = [(1, 2), (3, 4)]

#         # making the test
#         request = Empty()
#         optical_attack_detector_client.DetectAttack(request)

#         # checking behavior
#         context.ListContextIds.assert_called_once()
#         context.ListServices.assert_called_with(cid_list.context_ids[0])
#         influxdb.query.assert_called_once()
#         dbscan.Detect.assert_called()


# def test_detect_attack_no_attack(
#     optical_attack_detector_client: OpticalAttackDetectorClient,
# ):
#     with patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.context_client"
#     ) as context, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.influxdb_client"
#     ) as influxdb, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.dbscanserving_client"
#     ) as dbscan, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.attack_mitigator_client"
#     ) as mitigator:

#         # setting up the mock
#         cid_list = ContextIdList()
#         cid_list.context_ids.append(ContextId(**CONTEXT_ID))
#         context.ListContextIds.return_value = cid_list

#         service_list = ServiceList()
#         service_list.services.append(Service(**SERVICE_DEV1_DEV2))
#         context.ListServices.return_value = service_list

#         # dbscan.Detect.return_value = object()
#         dbscan.Detect.return_value.cluster_indices = [0, 1, 2, 3, 4, 5]

#         # making the test
#         request = Empty()
#         optical_attack_detector_client.DetectAttack(request)

#         # checking behavior
#         context.ListContextIds.assert_called_once()
#         context.ListServices.assert_called_with(cid_list.context_ids[0])
#         influxdb.query.assert_called_once()
#         dbscan.Detect.assert_called()
#         mitigator.NotifyAttack.assert_not_called()


# def test_detect_attack_with_attack(
#     optical_attack_detector_client: OpticalAttackDetectorClient,
# ):
#     with patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.context_client"
#     ) as context, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.influxdb_client"
#     ) as influxdb, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.dbscanserving_client"
#     ) as dbscan, patch(
#         "opticalattackdetector.service.OpticalAttackDetectorServiceServicerImpl.attack_mitigator_client"
#     ) as mitigator:

#         # setting up the mock
#         cid_list = ContextIdList()
#         cid_list.context_ids.append(ContextId(**CONTEXT_ID))
#         context.ListContextIds.return_value = cid_list

#         service_list = ServiceList()
#         service_list.services.append(Service(**SERVICE_DEV1_DEV2))
#         context.ListServices.return_value = service_list

#         # dbscan.Detect.return_value = object()
#         dbscan.Detect.return_value.cluster_indices = [0, 1, 2, 3, 4, -1]

#         # making the test
#         request = Empty()
#         optical_attack_detector_client.DetectAttack(request)

#         # checking behavior
#         context.ListContextIds.assert_called_once()
#         context.ListServices.assert_called_with(cid_list.context_ids[0])
#         influxdb.query.assert_called_once()
#         dbscan.Detect.assert_called()
#         mitigator.NotifyAttack.assert_called()


# def test_report_summarized_kpi(
#     optical_attack_detector_client: OpticalAttackDetectorClient,
# ):
#     kpi_list = KpiList()
#     optical_attack_detector_client.ReportSummarizedKpi(kpi_list)


# def test_report_kpi(optical_attack_detector_client: OpticalAttackDetectorClient):
#     kpi_list = KpiList()
#     optical_attack_detector_client.ReportKpi(kpi_list)
