Desktop notify for bluetooth headset battery levels.

headset_battery.sh

#!/bin/bash
# libnotify script to display bluetooth battery level with corresponding Adwaita
# battery iconset

# https://github.com/TheWeirdDev/Bluetooth_Headset_Battery_Level
# Battery level for 11:11:22:33:A3:1E is 40%
# example output: https://i.imgur.com/DH6Vd0V.png

src=$(bluetooth_battery.py $(bluetoothctl info | awk '/^Device/ {print $2}'))
dev=$(bluetoothctl info | sed -n '/Name/s/.*: //p')
num=$(echo ${src} | awk '{print substr($6, 1, length($6)-1)}')
icon="/usr/share/icons/Adwaita/96x96/status/battery-level-${num}-symbolic.symbolic.png"

notify-send -i "${icon}" "${dev} is ${num}%"