refactor: complete rewrite

modules/home/workstation/tools/ookvolume.nix

@@ -0,0 +1,48 @@
+{
+  lib,
+  pkgs,
+  osConfig,
+  ...
+}: let
+  inherit (lib) mkIf;
+  inherit (builtins) elem;
+  inherit (osConfig.ooknet.hardware) features;
+  ookvolume = pkgs.writeShellApplication {
+    name = "ookvolume";
+    runtimeInputs = with pkgs; [pamixer libnotify];
+    text = ''
+      notify() {
+        volume=$(pamixer --get-volume-human)
+        notify-send --app-name="system-notify" -h string:x-canonical-private-synchronous:sys-notify "󰕾 $volume"
+      }
+      option() {
+        case "$1" in
+        up)
+          pamixer --increase 5
+          ;;
+        down)
+          pamixer --decrease 5
+          ;;
+        mute)
+          pamixer --toggle-mute
+          ;;
+        *) echo "Invalid option" ;;
+        esac
+      }
+      main() {
+        option "$@"
+        notify
+      }
+      main "$@"
+    '';
+  };
+in {
+  config = mkIf (elem "audio" features) {
+    home.packages = [ookvolume];
+    ooknet.binds.volume = {
+      up = "ookvolume up";
+      down = "ookvolume down";
+      mute = "ookvolume mute";
+    };
+  };
+}