memorium/routes/api/auth/logout.ts

import { deleteCookie } from "@std/http/cookie";
import { Handlers } from "$fresh/server.ts";

export const handler: Handlers = {
  GET(req) {
    const url = new URL(req.url);

    const redirect = decodeURIComponent(url.searchParams.get("redirect") || "");

    const headers = new Headers();
    headers.append("location", redirect || "/");

    deleteCookie(headers, "session_cookie", {
      path: "/",
    });

    return new Response(null, {
      headers,
      status: 302,
    });
  },
};