core/apps/webapp/app/routes/magic.tsx

import { redirect } from "@remix-run/node";
import type { LoaderFunctionArgs } from "@remix-run/server-runtime";
import { authenticator } from "~/services/auth.server";
import { logger } from "~/services/logger.service";
import { saveSession } from "~/services/sessionStorage.server";
import { redirectCookie } from "./auth.google";

export async function loader({ request }: LoaderFunctionArgs) {
  const cookie = request.headers.get("Cookie");
  const redirectValue = await redirectCookie.parse(cookie);
  const authuser = await authenticator.authenticate("email-link", request);
  const redirectTo = redirectValue ?? "/";

  const headers = await saveSession(request, authuser);

  logger.debug("auth.google.callback authuser", {
    authuser,
  });

  return redirect(redirectTo, {
    headers,
  });
}