#!/bin/bash

set -eux

cd "$(dirname "$0")"

install -m 0755 backup /usr/local/bin/

if [ "${1:-}" != "full" ]; then
    exit 0
fi

BORG_PASSPHRASE="$(dd if=/dev/urandom of=/dev/stdout bs=1 count=15 2>/dev/null | base64)"
install -m 0644 -T etc-borg-exclude /etc/borg-exclude
install -m 0600 -T etc-borg-env /etc/borg-env
sed -i "s|SECRET|$BORG_PASSPHRASE|" /etc/borg-env

install -m 0644 -T etc-cron.d-backup /etc/cron.d/backup
H=$((16#$(hostname|md5sum|head -c 1) % 7 + 14))
M=$((16#$(hostname|md5sum|head -c 2) % 60))
sed -i -e "s|\$H|$H|" -e "s|\$M|$M|" /etc/cron.d/backup

[ -f /root/.ssh/id_rsa.pub ] || ssh-keygen
cat /root/.ssh/id_rsa.pub
install -m 0600 -T root-ssh-config /root/.ssh/config