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

let
  cfg = config.ptw.services.gnome;
in {
  options.ptw.services.gnome = {
    enable = lib.mkEnableOption "Configure GNOME using HomeManager";
  };
  
  config = lib.mkIf cfg.enable {
    environment = {
      systemPackages = with pkgs; [
        # Themes
        arc-theme
        libsForQt5.qtstyleplugin-kvantum

        # Gnome Shell Extensions
        gnomeExtensions.appindicator
        gnomeExtensions.caffeine
        gnomeExtensions.gnome-40-ui-improvements
        gnomeExtensions.notification-timeout
        gnomeExtensions.window-is-ready-remover
        gnomeExtensions.application-volume-mixer
        gnomeExtensions.tiling-assistant
        gnomeExtensions.tilingnome
        gnomeExtensions.tray-icons-reloaded
        gnomeExtensions.gsconnect
        gnomeExtensions.blur-my-shell
        gnomeExtensions.forge
        gnomeExtensions.dash-to-dock
        gnomeExtensions.sound-output-device-chooser
        rounded-window-corners

        # Programs
        gnome.eog
        gnome.nautilus
        gnome.evince
        gnome.gnome-terminal
        pinentry-gnome
        mousai

        # For config
        dconf # For home-manager
      ];
    };
    
    services = {
      accounts-daemon.enable = true;
      colord.enable = false;
      geoclue2.enable = false;
      dleyna-renderer.enable = false;
      dleyna-server.enable = false;
      gvfs.enable = true;
      telepathy.enable = false;
      gnome = {
        chrome-gnome-shell.enable = false;
        gnome-initial-setup.enable = false;
        gnome-remote-desktop.enable = false;
        rygel.enable = false;
        gnome-online-accounts.enable = false;
        evolution-data-server.enable = lib.mkForce false;
        tracker.enable = false;
        tracker-miners.enable = false;
        core-utilities.enable = false;
        games.enable = false;
      };

      udev.packages = with pkgs; [ gnome.gnome-settings-daemon ];
      
      xserver = {
        enable = true;
        layout = "de";

        libinput.enable = true;
        
        desktopManager.gnome.enable = true;
      };
    };

    xdg.portal = {
      enable = true;
      #extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
      gtkUsePortal = true;
    };

    qt5 = {
      style = "adwaita-dark";
      platformTheme = "gnome";
      enable = true;
    };
    
    home-manager.users."${config.ptw.system.singleUser}" = {
     #xdg.configFile = {
     #  # Make QT apps use a dark theme
     #  "Kvantum/kvantum.kvconfig".text = ''
     #    [General]
     #    theme=KvArcDark
     #  '';
     #};

      dconf.settings = {
        # The packages come in from modules/programs/gnome
        # Theme
        "org/gnome/desktop/interface" = {
          gtk-theme = "Arc-Dark";
        };

        # Nightlight (TODO: ?)
        "org/gnome/settings-daemon/plugins/color" = {
          night-light-enabled = true;
        };
        
        # Extensions
        "org/gnome/shell" = {
          enabled-extensions = let
            isMiku = config.ptw.system.hostName == "miku";
            isNishimiya = config.ptw.system.hostName == "nishimiya";
          in [
            "caffeine@patapon.info"
            "notification-timeout@chlumskyvaclav.gmail.com"
            "gnome-ui-tune@itstime.tech"
            "volume-mixer@evermiss.net"
            "windowIsReady_Remover@nunofarruca@gmail.com"
            "blur-my-shell@aunetx"
            "gsconnect@andyholmes.github.io"
            "trayIconsReloaded@selfmade.pl"
          ] ++ (lib.optional isMiku "tiling-assistant@leleat-on-github")
          ++ (lib.optional (isNishimiya || isMiku) "tilingnome@rliang.github.com");
        };

        "org/gnome/shell/extensions/caffeine" = {
          show-notifications = false;
          inhibit-apps = [ "mpv.desktop" ];
        };
        "org/gnome/shell/extensions/notification-timeout" = {
          timeout = 3000;
        };

        "org/gnome/shell/extensions/gnome-ui-tune" = {
          hide-search = true;
        };
        
        # Shortcuts
        "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0" = {
          binding = "<Alt>Return";
          command = "gnome-terminal";
          name = "Terminal";
        };
        "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1" = {
          binding = "<Super>s";
          command = "systemctl suspend";
          name = "Suspend";
        };
      };
    };
  };
}