#!/bin/sh

for battery in /sys/class/power_supply/BAT?*; do
	# If non-first battery, print a space separator.
	[ -n "${capacity+x}" ] && printf " "
	# Sets up the status and capacity
	case "$(cat "$battery/status")" in
		"Full") status="⚡" ;;
		"Discharging") status="🔋" ;;
		"Charging") status="🔌" ;;
		"Not charging") status="🛑" ;;
		"Unknown") status="♻️" ;;
	esac
	capacity=$(cat "$battery/capacity")
	# Will make a warn variable if discharging and low
	[ "$status" = "🔋" ] && [ "$capacity" -le 25 ] && warn="❗"
	# Prints the info
	printf "%s %s%d%%" "$status" "$warn" "$capacity"; unset warn
done && exit 0