# 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 time
from typing import List

from grpclib.client import Channel
from prometheus_client import Counter

from common.proto.asyncio.optical_attack_detector_grpc import \
    OpticalAttackDetectorServiceStub
from common.proto.asyncio.optical_attack_detector_pb2 import DetectionRequest
from common.Settings import get_log_level, get_setting

DROP_COUNTER = Counter(
    "optical_security_dropped_assessments",
    "Dropped assessments due to detector timeout",
)


log_level = get_log_level()
logging.basicConfig(level=log_level)
LOGGER = logging.getLogger(__name__)


async def detect_attack(
    host: str,
    port: int,
    context_id: str,
    service_id: str,
    kpi_id: str,
    timeout: float = 20.0,
) -> None:
    try:
        LOGGER.debug("Sending request for {}...".format(service_id))
        async with Channel(host, port) as channel:
            stub = OpticalAttackDetectorServiceStub(channel)

            request: DetectionRequest = DetectionRequest()
            request.service_id.context_id.context_uuid.uuid = context_id
            request.service_id.service_uuid.uuid = str(service_id)

            request.kpi_id.kpi_id.uuid = kpi_id

            await stub.DetectAttack(request, timeout=timeout)
        LOGGER.debug("Monitoring finished for {}/{}".format(service_id, kpi_id))
    except Exception as e:
        LOGGER.warning(
            "Exception while processing service_id {}/{}".format(service_id, kpi_id)
        )
        LOGGER.exception(e)
        DROP_COUNTER.inc()