#!/bin/sh

# Prints all batteries, their percentage remaining and an emoji corresponding
# to charge status (🔌 for pluged up, 🔋 for discharging on battery, etc.).

case $BLOCK_BUTTON in
    3) pgrep -x dunst >/dev/null && notify-send "🔋 Battery module" "🔋: discharging
🛑: not charging
♻: stagnant charge
🔌: charging
⚡: charged
❗: battery very low!" ;;
esac

# Loop through all attached batteries.
for battery in /sys/class/power_supply/BAT?
do
	# Get its remaining capacity and charge status.
	capacity=$(cat "$battery"/capacity) || exit
	status=$(cat "$battery"/status)

	# If it is discharging and 25% or less, we will add a ❗ as a warning.
	[ "$status" = "Discharging" ] && [ "$capacity" -le 25 ] && warn="❗"

	# Print the battery status (replaced by a cooresponding emoji with
	# sed), the percentage left and the warning if there is one.
	printf "%s%s%s\n" "$(echo "$status" | sed "s/,//;s/Discharging/🔋/;s/Not charging/🛑/;s/Charging/🔌/;s/Unknown/♻️/;s/Full/⚡/;s/ 0*/ /g;s/ :/ /g")" "$warn" "$(echo "$capacity" | sed -e 's/$/%/')"
	unset warn
done