export function useCors(req, res, next) {
  res.set(
    "Content-security-policy",
    "default-src *  data: blob: filesystem: about: ws: wss: 'unsafe-inline' 'unsafe-eval'; script-src * data: blob: 'unsafe-inline' 'unsafe-eval'; connect-src * data: blob: 'unsafe-inline'; img-src * data: blob: 'unsafe-inline'; frame-src * data: blob: ; style-src * data: blob: 'unsafe-inline'; font-src * data: blob: 'unsafe-inline';",
  );

  res.set("Access-Control-Allow-Origin", "*");
  res.set(
    "Access-Control-Allow-Headers",
    req.header("Access-Control-Request-Headers") || "*",
  );
  res.set(
    "Access-Control-Allow-Methods",
    req.header("Access-Control-Request-Methods") || "*",
  );

  res.set("Access-Control-Allow-Credentials", "true");

  // Handle preflight requests
  if (req.method === "OPTIONS") {
    return res.sendStatus(204);
  }

  next();
}