#!/usr/bin/env bash

################################
# Shows info about a specified mount point
#
# Dependencies:
# - [notify-send]
#
# @param {String} disk: The mount point to check
# @return {Number(%)}: Space used on the disk
################################

dir=$(dirname $0)
source $dir/util.sh

full=""
short=""
status=0

disks=$(lsblk | tail -n +2 | awk '{ print $7 }' | sed '/^\s*$/d' | sort)
let numDisks=$(echo "$disks" | wc -l)
let diskNum=$(getCache 1)

getDisk() {
	echo "$disks" | sed -n "$diskNum p"
}
disk=$(getDisk)

case $BLOCK_BUTTON in
	# right click: show details
	# TODO: fix
	3)
		local summary=$(du -h --max-depth=1 $disk)
		notify-send "Disk usage" "$summary"
	;;
	# scroll up: cycle disks
	4)
		diskNum=$[$(getCache) - 1]
		if (( diskNum <= 0 )); then
			diskNum=$numDisks
		fi
		setCache $diskNum
		disk=$(getDisk)
	;;
	5)
	# scroll down: cycle disks
		diskNum=$[$(getCache) + 1]
		if (( diskNum >= numDisks + 1 )); then
			diskNum=1
		fi
		setCache $diskNum
		disk=$(getDisk)
	;;
esac

usage=$(df -h $disk | sed -n '2 p')
usage=($usage)

if [ ${usage[4]%?} -ge 90 ]; then
	status=33
fi

full="$disk ${usage[4]}"
short="$full"

echo $full
echo $short
exit $status