refactor: complete rewrite

modules/home/workstation/tools/ookbrightness.nix

@@ -0,0 +1,50 @@
+{
+  lib,
+  osConfig,
+  pkgs,
+  ...
+}: let
+  inherit (lib) mkIf;
+  inherit (builtins) elem;
+  inherit (osConfig.ooknet.hardware) features;
+  ookbrightness = pkgs.writeShellApplication {
+    name = "ookbrightness";
+    runtimeInputs = with pkgs; [brillo libnotify];
+    text =
+      /*
+      bash
+      */
+      ''
+        BRIGHTNESS=$(brillo -G | awk -F'.' '{print$1}')
+        notify() {
+          notify-send --app-name="system-notify" -h string:x-canonical-private-synchronous:sys-notify "󰃠  $BRIGHTNESS%"
+        }
+        option() {
+          case "$1" in
+          up)
+            brillo -q -u 30000 -A 5
+            ;;
+          down)
+            brillo -q -u 30000 -U 5
+            ;;
+          *)
+            echo "Invalid argument"
+            ;;
+          esac
+        }
+        main() {
+          option "$@"
+          notify
+        }
+        main "$@"
+      '';
+  };
+in {
+  config = mkIf (elem "backlight" features) {
+    home.packages = [ookbrightness];
+    ooknet.binds.brightness = {
+      up = "ookbrightness up";
+      down = "ookbrightness down";
+    };
+  };
+}