#!/bin/bash -ex

BACKUP_DIR="/root/backup"

MACHINES=""
for nspawn in $(ls /etc/systemd/nspawn/*.nspawn); do
    nspawn_file=$(basename $nspawn)
    machine=${nspawn_file%.*}
    if [ -d "/var/lib/risotto/srv/$machine" ]; then
        MACHINES="$MACHINES$machine "
    fi
done

cd /var/lib/risotto/srv/
mkdir -p "$BACKUP_DIR"
for machine in $MACHINES; do
    BACKUP_FILE="$BACKUP_DIR/backup_$machine.tar.bz2"
    rm -f "$BACKUP_FILE"
    if [ -f "/var/lib/risotto/configurations/$machine/sbin/risotto_backup" ]; then
        machinectl -q shell $machine /usr/local/lib/sbin/risotto_backup
        tar --ignore-failed-read -cJf $BACKUP_FILE $machine/backup
    elif [ ! -f "/var/lib/risotto/configurations/$machine/no_risotto_backup" ]; then
        tar --ignore-failed-read -cJf $BACKUP_FILE $machine
    fi
done

exit 0