src/pages/.well-known/onion.ts


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import type { APIRoute } from "astro";
import { env } from "../../lib/environment.ts";

const { PUBLIC_TOR_URL } = env;
export const GET: APIRoute = (): Response => {
  if (PUBLIC_TOR_URL === undefined) {
    return new Response(null, { status: 404 });
  }

  let url: URL;
  try {
    url = new URL(PUBLIC_TOR_URL);
  } catch {
    return new Response("Invalid Tor URL", { status: 400 });
  }

  return new Response(url.host, {
    headers: { "Onion-Location": url.href, "Content-Type": "text/plain" },
  });
};