# Copyright 2022-2024 ETSI OSG/SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
#
# 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 grpc, json, logging

# from flask import current_app, render_template, Blueprint, flash, session, redirect, url_for
# from common.proto.context_pb2 import Empty, Link, LinkId, LinkList
# from common.proto.qkd_app_pb2 import App, QKDAppStatusEnum, QKDAppTypesEnum
# from common.tools.context_queries.Context import get_context
# from common.tools.context_queries.Device import get_device
# from common.tools.context_queries.Topology import get_topology
# from context.client.ContextClient import ContextClient
# from qkd_app.client.QKDAppClient import QKDAppClient


# LOGGER = logging.getLogger(__name__)
# app = Blueprint('qkd_app', __name__, url_prefix='/qkd_app')

# qkd_app_client = QKDAppClient()
# context_client = ContextClient()

# @app.get('/')
# def home():
#     if 'context_uuid' not in session or 'topology_uuid' not in session:
#         flash("Please select a context!", "warning")
#         return redirect(url_for("main.home"))
#     context_uuid = session['context_uuid']
#     topology_uuid = session['topology_uuid']

#     context_client.connect()
#     device_names = dict()

#     context_obj = get_context(context_client, context_uuid, rw_copy=False)
#     if context_obj is None:
#         flash('Context({:s}) not found'.format(str(context_uuid)), 'danger')
#         apps = list()
#     else:
#         try:
#             apps = qkd_app_client.ListApps(context_obj.context_id)
#             apps = apps.apps
#         except grpc.RpcError as e:
#             if e.code() != grpc.StatusCode.NOT_FOUND: raise
#             if e.details() != 'Context({:s}) not found'.format(context_uuid): raise
#             apps = list()
#         else:
#             # Too many requests to context_client if it has too many apps (update in the future)
#             for app in apps:
#                 if app.local_device_id.device_uuid.uuid not in device_names:
#                     device = get_device(context_client, app.local_device_id.device_uuid.uuid)
#                     if device is not None:
#                         device_names[app.local_device_id.device_uuid.uuid] = device.name
                
#                 if app.remote_device_id.device_uuid.uuid and app.remote_device_id.device_uuid.uuid not in device_names:
#                     device = get_device(context_client, app.remote_device_id.device_uuid.uuid)
#                     if device is not None:
#                         device_names[app.remote_device_id.device_uuid.uuid] = device.name

#     context_client.close()
#     return render_template(
#         'app/home.html', apps=apps, device_names=device_names, ate=QKDAppTypesEnum, ase=QKDAppStatusEnum)


# @app.route('detail/<path:app_uuid>', methods=('GET', 'POST'))
# def detail(app_uuid: str):
#     '''
#     context_client.connect()
#     link_obj = get_link(context_client, link_uuid, rw_copy=False)
#     if link_obj is None:
#         flash('Link({:s}) not found'.format(str(link_uuid)), 'danger')
#         link_obj = Link()
#         device_names, endpoints_data = dict(), dict()
#     else:
#         device_names, endpoints_data = get_endpoint_names(context_client, link_obj.link_endpoint_ids)
#     context_client.close()
#     return render_template('link/detail.html',link=link_obj, device_names=device_names, endpoints_data=endpoints_data)
#     '''
#     pass

# @app.get('<path:app_uuid>/delete')
# def delete(app_uuid):
#     '''
#     try:

#         # first, check if link exists!
#         # request: LinkId = LinkId()
#         # request.link_uuid.uuid = link_uuid
#         # response: Link = client.GetLink(request)
#         # TODO: finalize implementation

#         request = LinkId()
#         request.link_uuid.uuid = link_uuid # pylint: disable=no-member
#         context_client.connect()
#         context_client.RemoveLink(request)
#         context_client.close()

#         flash(f'Link "{link_uuid}" deleted successfully!', 'success')
#     except Exception as e: # pylint: disable=broad-except
#         flash(f'Problem deleting link "{link_uuid}": {e.details()}', 'danger')
#         current_app.logger.exception(e)
#     return redirect(url_for('link.home'))
#     '''
#     pass