#!/bin/sh

BACKUP_FILE=/rootfs/data/sysmocom-backup.tar

restore_backup_enabled() {
	if [ ! -e "$BACKUP_FILE" ] ; then
		info "The backup file '$BACKUP_FILE' does not exist, skipping restore..."
		return 1
	fi

	return 0
}

restore_backup_extract() {
	# List the files and check if grep hits something
	SEARCH=`tar -tvf $1 | grep $2`
	RES=$?
	if [ $RES = 0 ]; then
		tar -C /rootfs/tmp/ -xvf $1 $2
		cp -a /rootfs/tmp/content/* /rootfs/
		rm -rf /rootfs/tmp/content
	else
		echo "Directory '$2' is not in backup '$1'."
	fi
}

restore_backup_run() {
	info "Extracting files from the backup '$BACKUP_FILE'"
	restore_backup_extract $BACKUP_FILE content/etc || fatal "Failed!"
	restore_backup_extract $BACKUP_FILE content/var/lib/osmocom || fatal "Failed!"
}