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

device=${1:-}
if [[ ! -b ${device} ]]; then
  echo "ERROR: \"${device}\" is not a block device" >&2
fi

if [[ ! -f build/os.raw ]]; then
  echo "ERROR: \"build/os.raw\" does not appear to be built, run \"build.sh\"" >&2
fi

echo 'Copying the image...' >&2
mnt=$(mktemp --directory)
mount "${device}2" "${mnt}"
cp --update "build/os.raw" "${mnt}"
umount "${mnt}"
rm -rf "${mnt}"
echo 'Done.' >&2