#  This Source Code Form is subject to the terms of the Mozilla Public
#  License, v. 2.0. If a copy of the MPL was not distributed with this
#  file, You can obtain one at https://mozilla.org/MPL/2.0/.

from authlib.integrations.starlette_client import OAuth
from classquiz.config import settings
from functools import lru_cache

settings = settings()


@lru_cache()
def init_oauth() -> OAuth:
    oauth = OAuth()
    if settings.google_client_secret is not None and settings.google_client_id is not None:
        oauth.register(
            name="google",
            server_metadata_url="https://accounts.google.com/.well-known/openid-configuration",
            client_kwargs={"scope": "openid email profile"},
            client_id=settings.google_client_id,
            client_secret=settings.google_client_secret,
        )
    if settings.github_client_id is not None and settings.github_client_secret is not None:
        oauth.register(
            name="github",
            client_kwargs={"scope": "read:user user:email"},
            access_token_url="https://github.com/login/oauth/access_token",
            access_token_params=None,
            authorize_url="https://github.com/login/oauth/authorize",
            authorize_params=None,
            api_base_url="https://api.github.com/",
            client_id=settings.github_client_id,
            client_secret=settings.github_client_secret,
        )
    if (
        settings.custom_openid_provider.client_id is not None
        and settings.custom_openid_provider.client_secret is not None
    ):
        oauth.register(
            name="custom",
            client_kwargs={"scope": settings.custom_openid_provider.scopes},
            server_metadata_url=settings.custom_openid_provider.server_metadata_url,
            client_id=settings.custom_openid_provider.client_id,
            client_secret=settings.custom_openid_provider.client_secret,
        )
    return oauth