#!/usr/bin/env bash

#
#  helper script: create sha512sum file for the current snapshot
#
#	Copyright (C) 2015 Leah Rowe <info@minifree.org>
#
#    This program 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 3 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, see <http://www.gnu.org/licenses/>.
#

[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e

if [ -f "version" ]; then
	# _src release archive is being used
	version="$(cat version)"
	versiondate="$(cat versiondate)"
else
	# git repo is being used
	version="$(git describe --tags HEAD)"
	versiondate="$(git show -s --format=%ct)"
fi
versiondir="release/oldbuildsystem/${version}"
sha512filename="SHA512SUMS"
sha512filepath="${versiondir}/${sha512filename}"

if [ ! -d "${versiondir}/" ]; then

	printf "build/release/sha512sums: directory %s/ does not exist. You haven't generated any archives yet.\n" "${versiondir}"
	exit 1

fi

# delete the old file
rm -f "${sha512filepath}"

# create sha512sum file
printf "Creating list of SHA512 sums in %s...\n" "${sha512filepath}"
(cd "${versiondir}/" && for file in $(find -type f); do sha512sum "${file}" >> "${sha512filename}"; done)
printf "...done.\n"

printf "\n"
