# GTK and cursor theme, as nwg-look had set them on CachyOS (settings.ini,
# .gtkrc-2.0, GSettings), and Qt's: qt6ct with the Kvantum style.
#
# These files are now written by Nix, so change the theme here rather than in
# nwg-look or qt6ct (they can still preview themes, but can't save over these
# files).
{ config, pkgs, ... }:
let
  inherit (config.lib.dot) link;
in
{
  home.pointerCursor = {
    enable = true;
    name = "BreezeX-Black";
    package = pkgs.breezex-cursor;
    size = 28;
    gtk.enable = true;
    x11.enable = true;
  };

  gtk = {
    enable = true;
    theme = {
      name = "Adwaita-dark";
      package = pkgs.gnome-themes-extra;
    };
    iconTheme = {
      name = "breeze-dark";
      package = pkgs.kdePackages.breeze-icons;
    };
    font = {
      name = "Adwaita Sans";
      size = 11;
      package = pkgs.adwaita-fonts;
    };
    gtk2.extraConfig = ''
      gtk-toolbar-style=GTK_TOOLBAR_BOTH_HORIZ
      gtk-toolbar-icon-size=GTK_ICON_SIZE_LARGE_TOOLBAR
      gtk-button-images=0
      gtk-menu-images=0
      gtk-enable-event-sounds=1
      gtk-enable-input-feedback-sounds=0
      gtk-xft-antialias=1
      gtk-xft-hinting=1
      gtk-xft-hintstyle="hintslight"
      gtk-xft-rgba="rgb"
    '';
    gtk3.extraConfig = {
      gtk-toolbar-style = "GTK_TOOLBAR_BOTH_HORIZ";
      gtk-toolbar-icon-size = "GTK_ICON_SIZE_LARGE_TOOLBAR";
      gtk-button-images = 0;
      gtk-menu-images = 0;
      gtk-enable-event-sounds = 1;
      gtk-enable-input-feedback-sounds = 0;
      gtk-xft-antialias = 1;
      gtk-xft-hinting = 1;
      gtk-xft-hintstyle = "hintslight";
      gtk-xft-rgba = "rgb";
      gtk-application-prefer-dark-theme = 1;
    };
    gtk4.extraConfig.gtk-application-prefer-dark-theme = 1;
  };

  dconf.settings."org/gnome/desktop/interface" = {
    color-scheme = "prefer-dark";
    gtk-theme = "Adwaita-dark";
    icon-theme = "breeze-dark";
    cursor-theme = "BreezeX-Black";
    cursor-size = 28;
    font-name = "Adwaita Sans 11";
  };

  # QT_QPA_PLATFORMTHEME=qt6ct and QT_STYLE_OVERRIDE=kvantum for the session
  # (Hyprland's env also passes the first on, desktop.nix). qt6ct and Kvantum
  # themselves are installed system-wide (modules/nixos/desktop.nix).
  qt = {
    enable = true;
    platformTheme.name = "qt6ct";
    style.name = "kvantum";

    qt6ctSettings = {
      Appearance = {
        custom_palette = false;
        icon_theme = "Papirus-Dark";
        standard_dialogs = "default";
        style = "kvantum";
      };
      Fonts = {
        fixed = ''"JetBrainsMono Nerd Font,10,-1,5,50,0,0,0,0,0"'';
        general = ''"Noto Sans,10,-1,5,50,0,0,0,0,0"'';
      };
      Interface = {
        activate_item_on_single_click = 1;
        buttonbox_layout = 0;
        cursor_flash_time = 1000;
        dialog_buttons_have_icons = 1;
        double_click_interval = 400;
        gui_effects = "@Invalid()";
        keyboard_scheme = 2;
        menus_have_icons = true;
        show_shortcuts_in_context_menus = true;
        stylesheets = "@Invalid()";
        toolbutton_style = 4;
        underline_shortcut = 1;
        wheel_scroll_lines = 3;
      };
    };

    # The active theme is KvArcDark# (your customised copy of KvArcDark, made
    # with Kvantum Manager; it uses the stock theme's artwork). RiceDark is the
    # tweaked theme from the old repo, with the stock KvArcDark artwork copied in
    # under its name, as kvantum/install.sh did. Both stay linked to the
    # checkout.
    kvantum = {
      enable = true;
      settings.General.theme = "KvArcDark#";
    };

    # KDE apps (Dolphin, Ark) read the style and icons from kdeglobals. Set with
    # kwriteconfig6, so the apps can still save their own settings there.
    kde.settings.kdeglobals = {
      General.widgetStyle = "kvantum";
      Icons.Theme = config.qt.qt6ctSettings.Appearance.icon_theme;
      KDE.widgetStyle = "kvantum";
    };
  };

  xdg.configFile = {
    "Kvantum/KvArcDark#/KvArcDark#.kvconfig".source = link "kvantum/KvArcDark#.kvconfig";
    "Kvantum/RiceDark/RiceDark.kvconfig".source = link "kvantum/RiceDark.kvconfig";
    "Kvantum/RiceDark/RiceDark.svg".source =
      "${pkgs.kdePackages.qtstyleplugin-kvantum}/share/Kvantum/KvArcDark/KvArcDark.svg";
  };
}