#!/bin/sh

PREFIX=
. "$PREFIX/lib/libalpine.sh"


list_partitions() {
	awk '$1 ~ /[0-9]/ {print "  " $4}' /proc/partitions
}


if [ -z "$1" ] ; then
	while [ "x$verify" != "xy" ] ; do
		echo "Available partitions: " $(list_partitions)
		echon "Use what partition for encrypted swap? [none] "
		default_read part "none"

		# check if user requested to abort
		if [ "x$part" = "xabort" ] || [ "x$part" = "xnone" ] ; then
			exit
		fi
		# check if device exist
		[ -e /dev/$part ] || continue

		# let the user verify
		echon "Warning! you will lose all data on $part. Continue? (y/n) [n] "
		default_read verify "n"
	done
else
	part=$1
fi


apk_add cryptsetup-luks

# set the device in /etc/conf.f/cryptswap
if grep ^DEVICE= /etc/conf.d/cryptswap >/dev/null ; then
	sed -i 's:^DEVICE=.*:DEVICE=/dev/'$part':' /etc/conf.d/cryptswap
else
	echo "DEVICE=/dev/$part" >> /etc/conf.d/cryptswap
fi

rc_add -k -s 05 cryptswap
rc_add -k -s 06 swap

/etc/init.d/cryptswap start
/etc/init.d/swap start