#!/bin/sh

. /lib/partman/lib/base.sh

mypart=''
mysize=0

disks=
if db_get partman-auto/disk; then
	disks="$RET"
fi

for dev in $DEVICES/*; do
	[ -d $dev ] || continue
	if [ "$disks" ]; then
		partman_disk="$(cat "$dev/device")"
		found=0
		for preseed_disk in $disks; do
			preseed_id=$(mapdevfs $preseed_disk)
			case " $preseed_id " in
			    *" $partman_disk "*)
				found=1
				;;
			    *)
				continue
				;;
			esac
		done
		if [ "$found" = "0" ]; then
			continue
		fi
	fi
	cd $dev
	open_dialog PARTITIONS
	while { read_line num id size type fs path name; [ "$id" ]; }; do
		if [ "$fs" = free ] && [ "$type" != unusable ] && \
		   ! longint_le $size $mysize; then
			mysize=$size
			mypart=$dev//$id
		fi
	done
	close_dialog
done

if [ "$mypart" ]; then
	db_metaget partman-auto/text/use_biggest_free description
	printf "$mypart\t$RET"
fi