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

{
  dconf.settings = {
    # Desktop interface settings
    "org/gnome/desktop/interface" = {
      color-scheme = "prefer-dark";
      enable-hot-corners = false;
      clock-show-weekday = true;
      show-battery-percentage = true;

      icon-theme = "Papirus-Dark";
      cursor-theme = "Bibata-Modern-Classic";
    };

    "org/gnome/desktop/input-sources" = {
      sources = [
        (lib.gvariant.mkTuple [
          "xkb"
          "gb"
        ])
      ];
      xkb-options = [ "terminate:ctrl_alt_bksp" ];
    };

    # Window manager preferences
    "org/gnome/desktop/wm/preferences" = {
      button-layout = "appmenu:minimize,maximize,close";
      num-workspaces = 4;
    };

    # Keybindings
    "org/gnome/desktop/wm/keybindings" = {
      close = [ "<Super>q" ];
      switch-to-workspace-1 = [ "<Super>1" ];
      switch-to-workspace-2 = [ "<Super>2" ];
      switch-to-workspace-3 = [ "<Super>3" ];
      switch-to-workspace-4 = [ "<Super>4" ];
      move-to-workspace-1 = [ "<Super><Shift>1" ];
      move-to-workspace-2 = [ "<Super><Shift>2" ];
      move-to-workspace-3 = [ "<Super><Shift>3" ];
      move-to-workspace-4 = [ "<Super><Shift>4" ];
    };

    # Shell settings
    "org/gnome/shell" = {
      favorite-apps = [
        "firefox.desktop"
        "kitty.desktop"
        "org.gnome.Nautilus.desktop"
        "thunderbird.desktop"
        "chromium-browser.desktop"
      ];
      enabled-extensions = [
        "user-theme@gnome-shell-extensions.gcampax.github.com"
        "appindicatorsupport@rgcjonas.gmail.com"
        "caffeine@patapon.info"
        "screen-rotate@shyzus.github.io"
        "gsconnect@andyholmes.github.io"
      ];
    };

    # Mutter (window manager) settings
    "org/gnome/mutter" = {
      dynamic-workspaces = false;
      edge-tiling = true;
      workspaces-only-on-primary = true;
    };

    # File manager (Nautilus) settings
    "org/gnome/nautilus/preferences" = {
      default-folder-viewer = "list-view";
      search-filter-time-type = "last_modified";
      show-hidden-files = true;
    };

    # Power settings
    "org/gnome/settings-daemon/plugins/power" = {
      sleep-inactive-ac-type = "nothing";
      sleep-inactive-battery-timeout = 1800;
    };

    # Privacy settings
    "org/gnome/desktop/privacy" = {
      remember-recent-files = true;
      remove-old-temp-files = true;
      remove-old-trash-files = true;
    };

    # Session settings
    "org/gnome/desktop/session" = {
      idle-delay = lib.gvariant.mkUint32 900; # 15 minutes
    };

    # Screensaver settings
    "org/gnome/desktop/screensaver" = {
      lock-enabled = true;
      lock-delay = lib.gvariant.mkUint32 0;
    };

    # Caffeine extension settings
    "org/gnome/shell/extensions/caffeine" = {
      enable-fullscreen = true;
      restore-state = true;
      show-indicator = "always";
      show-notifications = false;
    };
  };

  # GNOME-specific packages
  home.packages = with pkgs; [
    gnome-tweaks
    gnomeExtensions.appindicator
    gnomeExtensions.user-themes
    gnomeExtensions.caffeine
    gnomeExtensions.gsconnect
    dconf-editor
    catppuccin-gtk
    papirus-icon-theme
    bibata-cursors
  ];

  # GTK theme configuration
  gtk = {
    enable = true;
    gtk4.theme = config.gtk.theme;
    theme = {
      name = "catppuccin-frappe-blue-standard";
      package = pkgs.catppuccin-gtk;
    };
    iconTheme = {
      name = "Papirus-Dark";
      package = pkgs.papirus-icon-theme;
    };
    cursorTheme = {
      name = "Bibata-Modern-Classic";
      package = pkgs.bibata-cursors;
    };
  };

  # Home Manager cursor configuration
  home.pointerCursor = {
    enable = true;
    name = "Bibata-Modern-Classic";
    package = pkgs.bibata-cursors;
    gtk.enable = true;
    x11.enable = true;
  };

  home.file."Pictures/wallpapers/tokyo-night.png".source = ../../assets/wallpapers/tokyo-night.png;

  # Set initial default wallpaper on first install if user hasn't configured a custom wallpaper yet.
  # If the user changes their wallpaper via GNOME Settings, dconf read detects it and leaves it untouched across reboots/updates.
  home.activation.setInitialWallpaper = lib.hm.dag.entryAfter [ "dconf" ] ''
    WALLPAPER="${config.home.homeDirectory}/Pictures/wallpapers/tokyo-night.png"
    VAL="$(${pkgs.dconf}/bin/dconf read /org/gnome/desktop/background/picture-uri 2>/dev/null || true)"
    if [ -z "$VAL" ]; then
      $DRY_RUN_CMD ${pkgs.dconf}/bin/dconf write /org/gnome/desktop/background/picture-uri "'file://$WALLPAPER'"
      $DRY_RUN_CMD ${pkgs.dconf}/bin/dconf write /org/gnome/desktop/background/picture-uri-dark "'file://$WALLPAPER'"
      $DRY_RUN_CMD ${pkgs.dconf}/bin/dconf write /org/gnome/desktop/background/picture-options "'zoom'"
      $DRY_RUN_CMD ${pkgs.dconf}/bin/dconf write /org/gnome/desktop/screensaver/picture-uri "'file://$WALLPAPER'"
      $DRY_RUN_CMD ${pkgs.dconf}/bin/dconf write /org/gnome/desktop/screensaver/picture-options "'zoom'"
    fi
  '';
}