#!/bin/sh -efu
#
# Copyright (C) 2007  Alexey Gladkov <legion@altlinux.org>
# Copyright (C) 2007  Sir Raorn <raorn@altlinux.org>
#
# hsh-remote helper to run hasher onto remote host.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#

. gear-sh-functions

show_help()
{
	cat <<-EOF
	Usage: $PROG [hasher options] [-- options] [<user>@]<hostname> <workdir> <package>

	<hostname> - remote build host;
	<workdir>  - hasher working directory onto <hostname>;
	<package>  - target package;

	Options:
	  --cleanup-repo    cleanup remote hasher workdir;
	  -v, --verbose     print a message for each action;
	  -o, --outdir=DIR  download results in DIR on local machine;
	  -V,--version      print program version and exit;
	  -h,--help         show this text and exit.

	Report bugs to http://bugs.altlinux.ru/

	EOF
	exit
}

print_version()
{
	cat <<-EOF
	$PROG version $PROG_VERSION
	Written by Alexey Gladkov <legion@altlinux.org>

	Copyright (C) 2007  Alexey Gladkov <legion@altlinux.org>
	Copyright (C) 2007  Sir Raorn <raorn@altlinux.org>
	This is free software; see the source for copying conditions.  There is NO
	warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	EOF
	exit
}

[ "$#" -gt 0 ] ||
	show_help

! printf '%s\n' "$*" |grep -qs '\(^\|[[:space:]]\)--repo' ||
	fatal "Unable to use --repo* options"

outdir='out'
clean=
verbose=
hsh_args=

while [ $# -gt 3 ]; do
	case "$1" in
		-v|--verbose) verbose=-v
			;;
		--) shift; break
			;;
	esac
	hsh_args="$hsh_args $(quote_shell_arg "$1")"
	shift
done

TEMP=`getopt -n $PROG -o o,h,v,V -l cleanup-repo,outdir:,help,verbose,version -- "$@"` ||
	show_help
eval set -- "$TEMP"
while :; do
	case "$1" in
		--cleanup-repo) clean=1
			;;
		-o|--outdir) shift
			outdir="$(readlink -ev "$1")"
			;;
		-v|--verbose) verbose=-v
			;;
		-V|--version) print_version
			;;
		-h|--help) show_help
			;;
		--) shift; break
			;;
		*) fatal "Unrecognized option: $1"
			;;
	esac
	shift
done

[ "$#" -eq 3 ] ||
	show_help

server="$1"; shift
workdir="$1"; shift
pkg="$(readlink -ev "$1")"; shift
pkgname="${pkg##*/}"

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

ssh "$server" "sh -efu"<<EOF
cd '$workdir'
mkdir $verbose -p -- out/bin out/src
rc=0
hsh $verbose $hsh_args \
  --repo-bin='$workdir/out/bin' \
  --repo-src='$workdir/out/src' \
  -- '$workdir' '$workdir/$pkgname' ||
  rc=\$?
[ -z "$clean" ] || hsh $verbose --cleanup -- '$workdir'
rm $verbose -f -- '$workdir/$pkgname'
exit \$rc
EOF

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