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

with lib;

let
  cfg = config.roles.desktop;
in
{
  config = mkMerge [
    (mkIf (cfg.enable && cfg.gaming.enable) {
      environment.systemPackages = with pkgs; [
        lutris
        moonlight

        # Emulators
        dolphin-emu

        # Re-enabled in 25.11 after binary build was fixed
        dolphin-emu-primehack

        # Experimenting with just using the steam version + downloading
        # indiviudal cores
        #retroarch-full
        ryubing

        yarg
      ];

      programs.steam = {
        enable = true;
        remotePlay.openFirewall = true;
        dedicatedServer.openFirewall = true;
        localNetworkGameTransfers.openFirewall = true;
      };

      # Xbox wireless protocol support (PDP RiffMaster Xbox, Xbox controllers, etc.)
      hardware.xone.enable = true;

      # YARG (rhythm game) needs udev rules for HID controller access.
      # Without these, instruments (Wii, PS3, etc.) can't be read without
      # sudo, and Steam's input layer must be used as a workaround (which
      # causes connectivity conflicts).
      # Note: Xbox peripherals (PDP RiffMaster Xbox) use xone instead of hidraw.
      services.udev.extraRules = ''
        # Allow user access to hidraw devices (Wii/PS3/PS4 instruments, etc.)
        KERNEL=="hidraw*", TAG+="uaccess"

        # Xbox 360 Wireless Adapter
        SUBSYSTEM=="usb", ATTR{idVendor}=="045e", ATTR{idProduct}=="0291", MODE="0666"
        SUBSYSTEM=="usb", ATTR{idVendor}=="045e", ATTR{idProduct}=="02a9", MODE="0666"
        SUBSYSTEM=="usb", ATTR{idVendor}=="045e", ATTR{idProduct}=="0719", MODE="0666"

        # PDP RiffMaster Xbox - named symlinks by serial number
        # Ladybug
        KERNEL=="event*", SUBSYSTEM=="input", ATTRS{serial}=="0000765A5937FF9B", SYMLINK+="input/yarg-ladybug"
        # Fly
        KERNEL=="event*", SUBSYSTEM=="input", ATTRS{serial}=="0000C8733EB92FC5", SYMLINK+="input/yarg-fly"
      '';
    })
  ];
}