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

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PKGDIR="$ROOT/package"
DIST="$ROOT/dist"

PACKAGE="$(awk '$1=="Package:" {print $2}' "$PKGDIR/DEBIAN/control")"
VERSION="$(awk '$1=="Version:" {print $2}' "$PKGDIR/DEBIAN/control")"
ARCH="$(awk '$1=="Architecture:" {print $2}' "$PKGDIR/DEBIAN/control")"
OUTPUT="$DIST/${PACKAGE}_${VERSION}_${ARCH}.deb"

mkdir -p "$DIST"
rm -f "$PKGDIR/DEBIAN/md5sums"
(
  cd "$PKGDIR"
  find . -type f ! -path './DEBIAN/*' -print0 \
    | sort -z \
    | xargs -0 md5sum \
    | sed 's#  \./#  #' > DEBIAN/md5sums
)

chmod 755 "$PKGDIR/DEBIAN/postinst" "$PKGDIR/usr/local/sbin/"*
dpkg-deb --root-owner-group --build "$PKGDIR" "$OUTPUT"
echo "$OUTPUT"