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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#

import logging
from typing import TYPE_CHECKING

from twisted.web.server import Request

from synapse.api.errors import SynapseError
from synapse.handlers.sso import get_username_mapping_session_cookie_from_request
from synapse.http.server import DirectServeHtmlResource

if TYPE_CHECKING:
    from synapse.server import HomeServer

logger = logging.getLogger(__name__)


class SsoRegisterResource(DirectServeHtmlResource):
    """A resource which completes SSO registration

    This resource gets mounted at /_synapse/client/sso_register, and is shown
    after we collect username and/or consent for a new SSO user. It (finally) registers
    the user, and confirms redirect to the client
    """

    def __init__(self, hs: "HomeServer"):
        super().__init__()
        self._sso_handler = hs.get_sso_handler()

    async def _async_render_GET(self, request: Request) -> None:
        try:
            session_id = get_username_mapping_session_cookie_from_request(request)
        except SynapseError as e:
            logger.warning("Error fetching session cookie: %s", e)
            self._sso_handler.render_error(request, "bad_session", e.msg, code=e.code)
            return
        await self._sso_handler.register_sso_user(request, session_id)