add waybar config

waybar/scripts/backlight.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+#
+# Adjust screen brightness and send a notification with the current level
+#
+# Requirements:
+# 	- brightnessctl
+# 	- notify-send (libnotify)
+#
+# Author: Jesse Mirabel <sejjymvm@gmail.com>
+# Created: August 28, 2025
+# License: MIT
+
+VALUE=1
+
+print-usage() {
+	local script=${0##*/}
+	cat <<- EOF
+		USAGE: $script [OPTIONS]
+
+		Adjust screen brightness and send a notification with the current level
+
+		OPTIONS:
+		    up   <value>    Increase brightness by <value>
+		    down <value>    Decrease brightness by <value>
+		                        Default value: $VALUE
+
+		EXAMPLES:
+		    Increase brightness:
+		        $ $script up
+
+		    Decrease brightness by 5:
+		        $ $script down 5
+	EOF
+	exit 1
+}
+
+set-brightness() {
+	local op
+	case $action in
+		'up') op='+' ;;
+		'down') op='-' ;;
+	esac
+
+	brightnessctl -n set "${value}%${op}" > /dev/null
+
+	local level
+	level=$(brightnessctl -m | awk -F ',' '{print $4}')
+
+	notify-send "Brightness: $level" -h int:value:"$level" -i 'contrast' -r 2825
+}
+
+main() {
+	action=$1
+	value=${2:-$VALUE}
+
+	! ((value > 0)) && print-usage
+
+	case $action in
+		'up' | 'down') set-brightness ;;
+		*) print-usage ;;
+	esac
+}
+
+main "$@"