#!/bin/sh

set -e

CONTROLLER=$(find /sys/class/power_supply -maxdepth 1 -name '*controller*' || true)

if test -z "$CONTROLLER"; then
    echo
    exit 0
fi

CAPACITY=$(cat "$CONTROLLER/capacity")

echo -n '󰊴'

if test "$CAPACITY" -ge 90; then
    echo '󰁹'
elif test "$CAPACITY" -ge 90; then
    echo '󰂂'
elif test "$CAPACITY" -ge 80; then
    echo '󰂁'
elif test "$CAPACITY" -ge 70; then
    echo '󰂀'
elif test "$CAPACITY" -ge 60; then
    echo '󰁿'
elif test "$CAPACITY" -ge 50; then
    echo '󰁾'
elif test "$CAPACITY" -ge 40; then
    echo '󰁽'
elif test "$CAPACITY" -ge 30; then
    echo '󰁼'
elif test "$CAPACITY" -ge 20; then
    echo '󰁻'
elif test "$CAPACITY" -ge 10; then
    echo '󰁺'
else
    echo '󰂎'
fi