# -*- coding: utf-8 -*-
# Copyright 2023 Google Inc.
#
# 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.

"""API handlers for managing owners and subscribers of individual Blink components."""

from chromestatus_openapi.models import ComponentUsersRequest

from framework import basehandlers, permissions
from internals import user_models


class ComponentUsersAPI(basehandlers.APIHandler):
    """API handler for component users."""

    def __update_subscribers_list(
        self, add=True, user_id=None, blink_component_id=None, primary=False
    ):
        if not user_id or not blink_component_id:
            return False

        user = user_models.FeatureOwner.get_by_id(int(user_id))
        if not user:
            return True

        if primary:
            if add:
                user.add_as_component_owner(blink_component_id)
            else:
                user.remove_as_component_owner(blink_component_id)
        else:
            if add:
                user.add_to_component_subscribers(blink_component_id)
            else:
                user.remove_from_component_subscribers(blink_component_id)

        return True

    def do_get(self, **kwargs):
        """In the future, this could be implemented."""
        self.abort(405, valid_methods=['PUT', 'DELETE'])

    @permissions.require_admin_site
    def do_put(self, **kwargs) -> tuple[dict, int]:
        """Update component subscribers."""
        component_users_request = ComponentUsersRequest.from_dict(
            self.request.get_json(force=True)
        )  # noqa: E501
        self.__update_subscribers_list(
            True,
            user_id=kwargs.get('user_id', None),
            blink_component_id=kwargs.get('component_id', None),  # noqa: E501
            primary=component_users_request.owner,
        )
        return {}, 200

    @permissions.require_admin_site
    def do_delete(self, **kwargs) -> tuple[dict, int]:
        """Remove component subscribers."""
        params = self.request.get_json(force=True)
        component_users_request = ComponentUsersRequest.from_dict(params)
        self.__update_subscribers_list(
            False,
            user_id=kwargs.get('user_id', None),
            blink_component_id=kwargs.get('component_id', None),  # noqa: E501
            primary=component_users_request.owner,
        )
        return {}, 200
