config/modules/services/ssh8022/default.nix

{
  lib,
  config,
  pkgs,
  myData,
  ...
}:
{
  options.mj.services.ssh8022 = with lib.types; {
    client = {
      enable = lib.mkEnableOption "Enable ssh8022 client";
      keyfile = lib.mkOption { type = str; };
    };
    server = {
      enable = lib.mkEnableOption "Enable ssh8022 server";
      keyfile = lib.mkOption { type = str; };
      openGlobalFirewall = lib.mkOption {
        type = bool;
        default = true;
      };
    };
  };

  config = lib.mkMerge [
    (
      let
        cfg = config.mj.services.ssh8022.client;
      in
      lib.mkIf cfg.enable {
        programs.ssh.extraConfig = ''
          Host fra1-b.jakstys.lt jakstys.lt
            ProxyCommand ${pkgs.spiped}/bin/spipe -t %h:8022 -k ${cfg.keyfile}
        '';
      }
    )
    (
      let
        cfg = config.mj.services.ssh8022.server;
      in
      lib.mkIf cfg.enable {

        mj.services.friendlyport.ports = lib.mkIf (!cfg.openGlobalFirewall) [
          {
            subnets = [ myData.subnets.tailscale.cidr ];
            tcp = [ 22 ];
          }
        ];

        services = {
          openssh.openFirewall = cfg.openGlobalFirewall;

          spiped = {
            enable = true;
            config = {
              ssh8022 = {
                inherit (cfg) keyfile;
                decrypt = true;
                source = "[0.0.0.0]:8022";
                target = "127.0.0.1:22";
              };
            };
          };
        };
        networking.firewall.allowedTCPPorts = [ myData.ports.ssh8022 ];
        systemd.services."spiped@ssh8022" = {
          wantedBy = [ "multi-user.target" ];
          overrideStrategy = "asDropin";
        };
      }
    )
  ];
}