#!/bin/sh -efu

outdir='out'
opts=
args=
clean=
verbose=

while [ "$#" -gt 0 ]; do
	case "$1" in
		--repo*) ;;
		--clean) clean=1 ;;
		--outdir=*) outdir="${1##--outdir=}" ;;
		-v|--verbose) verbose=-v ;;
		--) shift; break ;;
		-*) opts="$opts $1" ;;
		*)  args="$args $1" ;;
	esac
	shift
done

set -- $args
if [ "$#" -ne 3 ]; then
	printf "Usage: ${0##*/} [--clean] [hasher options] [<user>@]<hostname> <workdir> <pkg>\n" >&2
	exit
fi

server="$1"; shift
workdir="$1"; shift
pkg="$(readlink -ev "$1")"; shift

rsync $verbose -rtlp "$pkg" "$server:$workdir/"

ssh "$server" "cat >'$workdir/build'; sh -efu -- '$workdir/build'" <<EOF
cd '$workdir'
mkdir $verbose -p -- out/bin out/src
rc=0
hsh $verbose $opts \
  --repo-bin='$workdir/out/bin' \
  --repo-src='$workdir/out/src' \
  -- '$workdir' '$workdir/${pkg##*/}' ||
  rc=\$?
[ -z "$clean" ] || hsh $verbose --cleanup -- '$workdir'
rm $verbose -f -- '$workdir/${pkg##*/}' '$workdir/build'
exit \$rc
EOF

rsync $verbose -rtlp "$server:$workdir/out/" "$outdir/"
ssh -n "$server" "rm $verbose -rf -- '$workdir/out'"