dotfiles/provision/nixos/modules/gaming/steam-deck.nix

{ config, lib, pkgs, pkgs-unstable, user, jovian-nixos, home-manager, ... }:

let
  cfg = config.modules.gaming.steam-deck;
in {
  imports = [
    (jovian-nixos + "/modules")
    home-manager.nixosModule
  ];
  options.modules.gaming.steam-deck.enable = lib.mkEnableOption "steam-deck";
  config = lib.mkIf cfg.enable {


    jovian = {
      steam.desktopSession = "gnome-xorg";
      steam.enable = true;
      steam.autoStart = true; 
      steam.user = "${user}";
      devices.steamdeck = {
        enable = true;
      };
    };

    #services.xserver.displayManager.gdm.wayland = lib.mkForce true; # lib.mkForce is only required on my setup because I'm using some other NixOS configs that conflict with this value
    #services.xserver.displayManager.defaultSession = "steam-wayland";
    #services.xserver.displayManager.autoLogin.enable = true;
    #services.xserver.displayManager.autoLogin.user = "${user}";
    services.xserver.enable = true;
    services.xserver.displayManager.gdm.enable = false;
    services.xserver.desktopManager.gnome.enable = true;

    # Enable GNOME
    sound.enable = true;
    hardware.pulseaudio.enable = lib.mkForce false;
	
    # Create user
    users.users.${user} = {
      isNormalUser = true;
    };

    #systemd.services.gamescope-switcher = {
    #  wantedBy = [ "graphical.target" ];
    #  serviceConfig = {
    #    User = 1000;
    #    PAMName = "login";
    #    WorkingDirectory = "~";

    #    TTYPath = "/dev/tty7";
    #    TTYReset = "yes";
    #    TTYVHangup = "yes";
    #    TTYVTDisallocate = "yes";

    #    StandardInput = "tty-fail";
    #    StandardOutput = "journal";
    #    StandardError = "journal";

    #    UtmpIdentifier = "tty7";
    #    UtmpMode = "user";

    #    Restart = "always";
    #  };

    #  script = ''
    #    set-session () {
    #      mkdir -p ~/.local/state
    #      >~/.local/state/steamos-session-select echo "$1"
    #    }
    #    consume-session () {
    #      if [[ -e ~/.local/state/steamos-session-select ]]; then
    #        cat ~/.local/state/steamos-session-select
    #        rm ~/.local/state/steamos-session-select
    #      else58 closure
    #        echo "gamescope"
    #      fi
    #    }
    #    while :; do
    #      session=$(consume-session)
    #      case "$session" in
    #        plasma)
    #          dbus-run-session -- gnome-shell --display-server --wayland
    #          ;;
    #        gamescope)
    #          steam-session
    #          ;;
    #      esac
    #    done
    #  '';
    #};

    environment.systemPackages = with pkgs; [
      gnome.gnome-terminal
      gnomeExtensions.dash-to-dock
      jupiter-dock-updater-bin
      steamdeck-firmware
    ];

    # GNOME settings through home
    home-manager.users.${user} = {
      dconf.settings = {
        # Enable on-screen keyboard
        "org/gnome/desktop/a11y/applications" = {
          screen-keyboard-enabled = true;
        };
        "org/gnome/shell" = {
          enabled-extensions = [
            "dash-to-dock@micxgx.gmail.com"
          ];
          favorite-apps = ["steam.desktop"];
        };
        # Dash to Dock settings for a better touch screen experience
        "org/gnome/shell/extensions/dash-to-dock" = {
          background-opacity = 0.80000000000000004;
          custom-theme-shrink = true;
          dash-max-icon-size = 48;
          dock-fixed = true;
          dock-position = "LEFT";
          extend-height = true;
          height-fraction = 0.60999999999999999;
          hot-keys = false;
          preferred-monitor = -2;
          preferred-monitor-by-connector = "eDP-1";
          scroll-to-focused-application = true;
          show-apps-at-top = true;
          show-mounts = true;
          show-show-apps-button = true;
          show-trash = false;
        };
      };
    };
  };
}