#!/bin/sh

un_mountables=$(lsblk -nrpo "name,size,type,mountpoint" | awk '$1!~/sda/ && $3!~/disk/ && !/part $/ {print $1" ("$2") on "$4}')
[ -z "$un_mountables" ] && notify-send "There's no mounted drive." && exit 1
chosen=$(echo "$un_mountables" | dmenu -i -p "Devices" | awk '{print $1}')
[ -z "$chosen" ] && exit 1

prompt=$(echo -en "Yes\nNo" | dmenu -i -p "Are you sure?")
case $prompt in
	"Yes") sudo umount $chosen && notify-send "Unmounting..." "$chosen" || notify-send "Unmounting failed" "FDD is still writing or being used";;
	"No") exit 1 ;;
esac