configuration.nix/home/gui/default.nix

{
  config,
  lib,
  pkgs,
  osConfig ? null,
  ...
}:
let
  inherit (config) jhome;
  flatpakEnabled = if osConfig != null then osConfig.services.flatpak.enable else false;
  osSway = osConfig == null && !osConfig.programs.sway.enable;
  swayPkg = if osSway then pkgs.sway else null;
  cfg = jhome.gui;
  cursor.package = pkgs.nordzy-cursor-theme;
  cursor.name = "Nordzy-cursors";
  iconTheme.name = "Papirus-Dark";
  iconTheme.package = pkgs.papirus-icon-theme;
in
{
  config = lib.mkIf (jhome.enable && cfg.enable) {
    home.packages =
      with pkgs;
      [
        webcord
        ferdium
        xournalpp
        signal-desktop
        lxqt.pcmanfm-qt
        wl-clipboard
        # Extra fonts
        noto-fonts-cjk # Chinese, Japanese and Korean characters
      ]
      ++ lib.optional flatpakEnabled flatpak;

    fonts.fontconfig.enable = true;

    # Browser
    programs.firefox.enable = true;
    # Dynamic Menu
    programs.fuzzel = {
      enable = true;
      settings.main = {
        icon-theme = "Papirus-Dark";
        terminal = cfg.terminal;
        layer = "overlay";
      };
    };
    # Video player
    programs.mpv = {
      enable = true;
      scripts = builtins.attrValues { inherit (pkgs.mpvScripts) uosc thumbfast; };
    };
    # Status bar
    programs.waybar = {
      enable = true;
      systemd.enable = true;
      settings = import ./waybar-settings.nix { inherit config lib; };
    };
    # Terminal
    programs.wezterm = {
      enable = cfg.terminal == "wezterm";
      extraConfig = ''
        config = {}
        config.hide_tab_bar_if_only_one_tab = true
        config.window_padding = { left = 1, right = 1, top = 1, bottom = 1 }
        return config
      '';
    };
    programs.alacritty.enable = cfg.terminal == "alacritty";
    programs.zellij.enable = cfg.terminal == "alacritty"; # alacritty has no terminal multiplexerr built in
    # PDF reader
    programs.zathura.enable = true;
    # Auto start sway
    programs.zsh.loginExtra = lib.optionalString cfg.sway.autostart ''
      # Start Sway on login to TTY 1
      if [ "$TTY" = /dev/tty1 ]; then
        exec sway
      fi
    '';
    # Volume/Backlight control and notifications
    services.avizo = {
      enable = true;
      settings.default = {
        time = 0.8;
        border-width = 0;
        height = 176;
        y-offset = 0.1;
        block-spacing = 1;
      };
    };
    # Sound tuning
    services.easyeffects.enable = true;
    # Auto configure displays
    services.kanshi.enable = lib.mkDefault true;
    # Notifications
    services.mako = {
      enable = true;
      layer = "overlay";
      borderRadius = 8;
      defaultTimeout = 15000;
    };
    # Window Manager
    wayland.windowManager.sway = {
      enable = true;
      package = swayPkg; # no sway package if it comes from the OS
      config = import ./sway-config.nix { inherit config pkgs; };
    };

    # Set cursor style
    stylix.cursor = cursor;
    home.pointerCursor.gtk.enable = true;
    # Set Gtk theme
    gtk = {
      enable = true;
      iconTheme = iconTheme;
      gtk3.extraConfig.gtk-application-prefer-dark-theme = 1;
      gtk4.extraConfig.gtk-application-prefer-dark-theme = 1;
    };
    # Set Qt theme
    qt = {
      enable = true;
      platformTheme.name = "gtk";
    };

    xdg.systemDirs.data = [
      "/usr/share"
      "/var/lib/flatpak/exports/share"
      "${config.xdg.dataHome}/flatpak/exports/share"
    ];
  };
}