asgi app to provide OAuth using Github

oauth_server_github.py

import uvicorn

from http.cookies import SimpleCookie
from urllib.parse import parse_qsl
from datasette_auth_github import GitHubAuth, utils


class GitHubAuthProxy(GitHubAuth):
    login_path = "/-/login"

    def make_redirect_cookie(self, request_scope):
        """cookie to tell browser where to redirect post authentication"""
        redirect_cookie = SimpleCookie()
        qs = dict(
            parse_qsl(request_scope["query_string"].decode("utf8"))
        )
        redirect_cookie[self.redirect_cookie_name] = qs['requestUri']
        redirect_cookie[self.redirect_cookie_name]["path"] = "/"
        return redirect_cookie

    async def handle_require_auth(self, scope, receive, send):
        if scope.get("path") == self.login_path:
            return await super().handle_require_auth(scope, receive, send)
        else:
            await utils.send_html(send, 'redirect to login screen', status=401)
            return


async def blank_app(scope, receive, send):
    await send(
        {
            "type": "http.response.start",
            "status": 200,
            "headers": [[b"content-type", b"text/plain"]],
        }
    )
    await send({"type": "http.response.body", "body": b""})


app = GitHubAuthProxy(
    blank_app,
    client_id = "xx",
    client_secret = "xx",
    require_auth = True,
    disable_auto_login=True
)


if __name__ == "__main__":
    uvicorn.run(app, port=6000)