let
  extraConfig = ''
    add_header Referrer-Policy 		"same-origin" always;
  '';
  func = builtins.mapAttrs (vhostName: vhostCfg:
    let
      def = {
        forceSSL = true;
        http3 = true;
        quic = true;
      };
      conf = if builtins.hasAttr "redirectTo" vhostCfg
        then {
          useACMEHost = vhostCfg.redirectTo;
          globalRedirect = vhostCfg.redirectTo;
        }
        else if builtins.hasAttr "ACMEHost" vhostCfg
          then {
            useACMEHost = vhostCfg.ACMEHost;
            root = vhostCfg.webroot;
          }
          else { 
            enableACME = true;
            root = vhostCfg.webroot;
          };
      otherCfg = (builtins.removeAttrs vhostCfg [ "redirectTo" "ACMEHost" "webroot" "extraConfig" ] // (
        if builtins.hasAttr "extraConfig" vhostCfg
          then { extraConfig = ''${vhostCfg.extraConfig} ${extraConfig}''; }
          else { inherit extraConfig; }
      ));
    in
      conf // def // otherCfg
  );
in {
  test = func {
    "www.miau.zip" = { 
      redirectTo = "miau.zip";
    };
    "miau.zip" = {
      ACMEHost = "miau.zip";
      webroot = "/skgj";
      locations."/".extraConfig = "fsfs";
      extraConfig = ''
        skfdsjf
      '';
    };
  };
}