{ lib, config, ... }:

with lib;
with lib.my;
let
  cfg = config.modules.desktop.themes;
in {
  options.modules.desktop.themes = with types; {
    active = mkOption {
      type = types.nullOr types.str;
      default = null;
      description = "Name of the theme to apply; see modules/desktop/themes for a list of valid options";
    };

    dark = mkOpt bool false;

    gtkTheme = {
      name = mkOpt str "";
      package = mkPackageOption pkgs "gtk" {};
    };
    iconTheme = {
      name = mkOpt str "";
      package = mkPackageOption pkgs "icon" {};
    };
    cursorTheme = {
      name = mkOpt str "";
      package = mkPackageOption pkgs "cursor" {};
    };
    sddmTheme = {
      name = mkOpt str "";
      package = mkPackageOption pkgs "sddm" {};
    };

    editor = {
      vscode = {
        colorTheme = {
          name = mkOpt str "";
          extension = mkPackageOption pkgs "extension" {};
        };
        iconTheme = {
          name = mkOpt str "";
          extension = mkPackageOption pkgs "extension" {};
        };
      };
    };

    hyprland = {
      source = mkOpt (nullOr str) null;
      extraConfig = mkOpt (nullOr str) null;
    };

    waybar = mkOpt str "";

    wob = {
      borderColor = mkOpt (nullOr str) null;
      backgroundColor = mkOpt (nullOr str) null;
      barColor = mkOpt (nullOr str) null;
    };

    rofi = mkOpt (nullOr path) null;
  };

  config = mkIf (cfg.active != null) {
    programs.dconf.enable = true;

    hm.dconf = {
      enable = true;
      settings."org/gnome/desktop/interface".color-scheme = mkIf cfg.dark "prefer-dark";
      settings."org/gnome/desktop/interface".gtk-theme = cfg.gtkTheme.name;
      settings."org/gnome/desktop/interface".icon-theme = cfg.iconTheme.name;
      settings."org/gnome/desktop/interface".cursor-theme = cfg.cursorTheme.name;

      settings."org/gnome/shell/extensions/user-theme".name = cfg.gtkTheme.name;
    };

    hm.gtk = {
      enable = true;
      cursorTheme = cfg.cursorTheme;
      iconTheme = cfg.iconTheme;
      theme = cfg.gtkTheme;
    };

    # unfortunately broken because the catppucciin maintainers removed gtk2 support
    # TODO: kvantum?
    #hm.qt = {
    #  enable = true;
    #  platformTheme.name = "gtk";
    #  style.name = "gtk2";
    #};

    hm.home.pointerCursor = {
      gtk.enable = true;
      x11.enable = true;
      name = cfg.cursorTheme.name;
      package = cfg.cursorTheme.package;
    };

    hm.services.dunst.iconTheme = {
      name = cfg.iconTheme.name;
      package = cfg.iconTheme.package;
    };

    hm.programs.vscode = {
      extensions = [ 
        cfg.editor.vscode.colorTheme.extension
        cfg.editor.vscode.iconTheme.extension
      ];
      userSettings = {
        "workbench.colorTheme" = cfg.editor.vscode.colorTheme.name;
        "workbench.iconTheme" = cfg.editor.vscode.iconTheme.name;
      };
    };

    hm.wayland.windowManager.hyprland = {
      settings.source = mkIf (cfg.hyprland.source != null) [ cfg.hyprland.source ];
      extraConfig = mkIf (cfg.hyprland.extraConfig != null) cfg.hyprland.extraConfig;
    };

    hm.programs.waybar.style = cfg.waybar;

    hm.services.wob.settings."" = {
      border_color = cfg.wob.borderColor;
      background_color = cfg.wob.backgroundColor;
      bar_color = cfg.wob.barColor;
    };

    hm.programs.rofi.theme = cfg.rofi;
  };
}