# 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
from common.Constants import DEFAULT_CONTEXT_NAME
from common.proto.context_pb2 import ContextId, DeviceId, Empty, LinkId, TopologyId
from common.tools.descriptor.Loader import DescriptorLoader
from common.tools.object_factory.Context import json_context_id
from context.client.ContextClient import ContextClient
from device.client.DeviceClient import DeviceClient
from tests.Fixtures import context_client, device_client    # pylint: disable=unused-import

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

DESCRIPTOR_FILE = 'ofc22/descriptors_emulated.json'
ADMIN_CONTEXT_ID = ContextId(**json_context_id(DEFAULT_CONTEXT_NAME))

def test_services_removed(
    context_client : ContextClient, # pylint: disable=redefined-outer-name
    device_client : DeviceClient,   # pylint: disable=redefined-outer-name
) -> None:
    # ----- List entities - Ensure service is removed ------------------------------------------------------------------
    with open(DESCRIPTOR_FILE, 'r', encoding='UTF-8') as f:
        descriptors = f.read()

    descriptor_loader = DescriptorLoader(descriptors)

    response = context_client.ListContexts(Empty())
    assert len(response.contexts) == descriptor_loader.num_contexts

    for context_uuid, num_topologies in descriptor_loader.num_topologies.items():
        response = context_client.ListTopologies(ContextId(**json_context_id(context_uuid)))
        assert len(response.topologies) == num_topologies

    response = context_client.ListDevices(Empty())
    assert len(response.devices) == descriptor_loader.num_devices

    response = context_client.ListLinks(Empty())
    assert len(response.links) == descriptor_loader.num_links

    for context_uuid, _ in descriptor_loader.num_services.items():
        response = context_client.ListServices(ContextId(**json_context_id(context_uuid)))
        assert len(response.services) == 0

    for context_uuid, _ in descriptor_loader.num_slices.items():
        response = context_client.ListSlices(ContextId(**json_context_id(context_uuid)))
        assert len(response.slices) == 0

    # This scenario assumes no services are created beforehand
    response = context_client.GetContext(ADMIN_CONTEXT_ID)
    assert len(response.service_ids) == 0
    assert len(response.slice_ids) == 0


    # ----- Delete Links, Devices, Topologies, Contexts ----------------------------------------------------------------
    for link in descriptor_loader.links:
        context_client.RemoveLink(LinkId(**link['link_id']))

    for device in descriptor_loader.devices:
        device_client .DeleteDevice(DeviceId(**device['device_id']))

    for context_uuid, topology_list in descriptor_loader.topologies.items():
        for topology in topology_list:
            context_client.RemoveTopology(TopologyId(**topology['topology_id']))

    for context in descriptor_loader.contexts:
        context_client.RemoveContext(ContextId(**context['context_id']))


    # ----- List entities - Ensure database is empty again -------------------------------------------------------------
    response = context_client.ListContexts(Empty())
    assert len(response.contexts) == 0

    response = context_client.ListDevices(Empty())
    assert len(response.devices) == 0

    response = context_client.ListLinks(Empty())
    assert len(response.links) == 0
