#!/usr/bin/env bash

# Display the current battery status.
# requires joypixels font in dwm config.def.h

# This is updated by signal 2, so 2 + 34 =
# kill -36 $(pidof dwmblocks) or
# pkill -RTMIN+2 dwmblocks

# Loop through all attached batteries.
for battery in /sys/class/power_supply/BAT?*; do
    # If non-first battery, print a space separator.
    [ -n "${capacity+x}" ] && printf " "

    capacity="$(cat "$battery/capacity" 2>&1)"
    if [ "$capacity" -gt 90 ]; then
        status="✅ "
    elif [ "$capacity" -gt 60 ]; then
        status="🔋 "
    elif [ "$capacity" -gt 40 ]; then
        status="🪫 "
    elif [ "$capacity" -gt 10 ]; then
        status="⚠️ "
    else
        status="❌ "
    fi

    case "$(cat "$battery/status" 2>&1)" in

        "Full") 
            status="⚡🔋" 
        ;;

        "Discharging")
            if [ "$capacity" -le 20 ]; then
                status="$status"
            fi
        ;;

        "Charging") 
            status="🔌$status" 
        ;;

        "Not charging") 
            status="♻"        
        ;;

        "Unknown") 
            status="? $status" 
        ;;

        *) 
            exit 1 
        ;;
    esac

    echo -e " $status $capacity% ┊"
done