#!/usr/bin/sh

# Script:       battery
# License:      MIT
# Author:       Arkaprabha Chakraborty
# Created:      07-08-23
# Dependencies: dunstify
#
# Copyright (C) 2023 Arkaprabha Chakraborty

last_capacity="NONE"
last_status="None"

LOW=20
CRITICAL=10

while true; do
  BATTERY="/sys/class/power_supply/CMB0"
  if [ -d $BATTERY ]; then
    capacity=$(cat $BATTERY/capacity)
    status=$(cat $BATTERY/status)

    if [ $last_status = "None" ]; then
      last_status=$status
    elif [ $last_status != "Discharging" ] && [ $status = "Discharging" ]; then
      notify-send "Power Unplugged" --replace-id 667
      last_status=$status
    elif [ $last_status != "Charging" ] && [ $status = "Charging" ]; then
      notify-send "Power Plugged" --replace-id 667
      last_status=$status
    fi

    if [ $last_capacity != "FULL" ] && [ $status = "Full" ]; then
      notify-send "Battery Full" --replace-id 666
      last_capacity="FULL"
    elif [ $last_capacity != "LOW" ] && [ $status = "Discharging" ] &&
      [ $capacity -le $LOW ] && [ $capacity -gt $CRITICAL ]; then
      notify-send "Battery Low: $capacity%" --replace-id 666
      last_capacity=LOW
    elif [ $status = "Discharging" ] && [ $capacity -le $CRITICAL ]; then
      notify-send --urgency critical "Battery Critical: $capacity%" --replace-id 666
      last_capacity=CRITICAL
    fi
  fi
  sleep 2
done