#!/bin/sh
. $HOME/.bin/_config

print "Tarsnap Restore:"

if [ -z "$1" ]; then
	doas tarsnap --list-archives | sort
	printf "Usage: restore <key_id>\n"
	exit 2
fi

_backup="$(doas tarsnap --list-archives | grep "$1")"
if [ -z "$_backup" ]; then
	print "No backup with key id $1 found."
	exit 1
fi

print "Found Backup: $_backup"
mkdir -p "restore_$1"
print "Extracting to: $(readlink -f $PWD/restore_$1)"

if [ -f "restore_$1/.done" ]
then
    print "Skipping, because restore_$1/.done file exists."
else
    doas tarsnap -tf "$_backup" \
        | xargs -P 50 -n 1 -t \
            doas tarsnap --humanize-numbers --resume-extract --chroot -xf "$_backup" -C "restore_$1" --

    if [ $? -eq 0 ]
    then
        print "Data restored in $(readlink -f "restore_$1")"
        touch "restore_$1/.done"
    else
        print "Restore aborted..."
    fi
fi
print ""