#!/usr/bin/env bash
set -euo pipefail

SRC="/data/backup/"
DEST="/mnt/nas/backup/"

# Ensure NAS is mounted
if ! mountpoint -q /mnt/nas; then
    echo "NAS not mounted at /mnt/nas, skipping backup" >&2
    exit 1
fi

mkdir -p "$DEST"
sudo rsync -a --delete --no-group --no-perms --no-owner "$SRC" "$DEST"