{ nix-config, config, lib, pkgs, ... }:

let
  inherit (nix-config.inputs) sakaya;
  inherit (config.modules.system) username;
  inherit (lib) singleton;

  sakayaPort = 39493;
in
{
  networking.nat.forwardPorts = singleton {
    destination = "192.168.100.49:${sakayaPort}";
    sourcePort = sakayaPort;
  };

  networking.firewall.allowedTCPPorts = [
    sakayaPort
  ];

  systemd.services.sakaya = {
    enable = true;
    description = "sakaya server";

    unitConfig = {
      Type = "simple";
    };

    path = with pkgs; [
      su
    ];

    serviceConfig = {
      ExecStart = "/usr/bin/env su ${username} --command=${sakaya.packages.${pkgs.system}.sakaya}/bin/sakaya";
    };

    wantedBy = [ "multi-user.target" ];
  };

  environment.systemPackages = with pkgs; [
    wineWowPackages.waylandFull
    winetricks
    sakaya.packages.${system}.sakaya
  ];

  environment.sessionVariables = {
    LC_ALL = "ja_JP.UTF-8";
    TZ = "Asia/Tokyo";
  };
}