import cfg from "../config.mjs";

export default (router, tpl) => {
  router.get(/^\/theme\//, async (req, res) => {
    let theme = req.url.split[1] ?? cfg.websrv.themes[0];
    if(!cfg.websrv.themes.includes(theme))
      theme = cfg.websrv.themes[0];

    return res.writeHead(301, {
      "Cache-Control": "no-cache, public",
      "Set-Cookie": `theme=${theme}; Path=/`,
      "Location": req.headers.referer ?? "/"
    }).end();
  });
  return router;
};