"""
Copyright (c) 2020, VRAI Labs and/or its affiliates. All rights reserved.

This software is licensed under the Apache License, Version 2.0 (the
"License") as published by the Apache Software Foundation.

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.
"""
from __future__ import annotations
from typing import TYPE_CHECKING, Union

from supertokens_python.normalised_url_path import NormalisedURLPath
from supertokens_python.recipe.session import Session
from supertokens_python.recipe.session.interfaces import APIInterface, SignOutOkayResponse
from supertokens_python.utils import normalise_http_method

if TYPE_CHECKING:
    from supertokens_python.recipe.session.interfaces import APIOptions, SignOutResponse
from supertokens_python.recipe.session.exceptions import UnauthorisedError


class APIImplementation(APIInterface):
    def __init__(self):
        super().__init__()

    async def refresh_post(self, api_options: APIOptions):
        await api_options.recipe_implementation.refresh_session(api_options.request)

    async def signout_post(self, api_options: APIOptions) -> SignOutResponse:
        try:
            session = await api_options.recipe_implementation.get_session(api_options.request)
        except UnauthorisedError:
            return SignOutOkayResponse()

        if session is None:
            raise Exception('Session is undefined. Should not come here.')
        await session.revoke_session()
        return SignOutOkayResponse()

    async def verify_session(self, api_options: APIOptions, anti_csrf_check: Union[bool, None] = None,
                             session_required: bool = True) -> Union[Session, None]:
        method = normalise_http_method(api_options.request.method())
        if method == 'options' or method == 'trace':
            return None
        incoming_path = NormalisedURLPath(api_options.request.get_path())
        refresh_token_path = api_options.config.refresh_token_path
        if incoming_path.equals(refresh_token_path) and method == 'post':
            return await api_options.recipe_implementation.refresh_session(api_options.request)
        else:
            return await api_options.recipe_implementation.get_session(api_options.request, anti_csrf_check,
                                                                       session_required)
