#!/usr/bin/env bash
set -euf -o pipefail

if [ -d /sys/class/power_supply/BAT0 ]; then
	battery_info="$(head -n 1 /sys/class/power_supply/BAT0/capacity)%"
	current_charge=$(echo "$battery_info" | grep -o '[0-9]\+%' | awk '{sub (/%/, "", $1); print $1}')

	if [[ $current_charge -lt 11 ]]; then
		ICON="/home/deadguy/Pictures/.icn/battery-empty.png"
	elif [[ $current_charge -lt 31 ]]; then
		ICON="/home/deadguy/Pictures/.icn/battery-caution.png"
	elif [[ $current_charge -lt 51 ]]; then
		ICON="/home/deadguy/Pictures/.icn/battery-low.png"
	elif [[ $current_charge -lt 71 ]]; then
		ICON="/home/deadguy/Pictures/.icn/battery-good.png"
	elif [[ $current_charge -lt 90 ]]; then
		ICON="/home/deadguy/Pictures/.icn/battery-full.png"
	else
		ICON="/home/deadguy/Pictures/.icn/battery-full.png"
	fi
	notify-send -t 5000 -i "$ICON" "$current_charge%"
fi