#!/bin/sh

total_now=0
total_full=0
status=""

for bat in /sys/class/power_supply/BAT*; do
    [ -d "$bat" ] || continue

    if [ -r "$bat/energy_now" ] && [ -r "$bat/energy_full" ]; then
        now=$(cat "$bat/energy_now")
        full=$(cat "$bat/energy_full")
    elif [ -r "$bat/charge_now" ] && [ -r "$bat/charge_full" ]; then
        now=$(cat "$bat/charge_now")
        full=$(cat "$bat/charge_full")
    else
        continue
    fi

    st=$(cat "$bat/status" 2>/dev/null)

    total_now=$((total_now + now))
    total_full=$((total_full + full))

    case "$st" in
        Charging) status="⚡" ;;
        Discharging) [ -z "$status" ] && status="🔋" ;;
        Full) [ -z "$status" ] && status="✔" ;;
    esac
done

[ "$total_full" -gt 0 ] || exit 0

pct=$((100 * total_now / total_full))
[ -n "$status" ] || status="BAT"

text="$status $pct%"

if [ "$pct" -le 15 ]; then
    color="#ff5555"
elif [ "$pct" -le 30 ]; then
    color="#f1fa8c"
else
    color="#9ece6a"
fi

printf '%s\n%s\n%s\n' "$text" "$text" "$color"