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#!/bin/sh
#
# Copyright (C) 2021 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.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/>.

set -e

usage()
{
	echo "$0 <tag> <output directory>"
	exit 1
}

tag="$1"
outdir="$2"

replicant_dir="${outdir}/${tag}"
repo_branch="refs/tags/${tag}"

if [ $# -ne 2 ] ; then
	usage
fi

mkdir -p "${replicant_dir}"
cd "${replicant_dir}"
if [ ! -d .repo ] ; then
	yes | repo init \
		-u https://git.replicant.us/replicant/manifest.git \
		-b "${repo_branch}" \
		--depth=1 || rm -rf .repo/
fi

repo sync

cd ..
tarball="${tag}.tar"
if [ ! -f "${tarball}" ] && [ ! -f "${tarball}.xz" ] ; then
	tar cf "${tarball}" "${replicant_dir}"	|| rm -f "${tarball}"
fi

# TODO: Make the tarball reproducible by removing metadata

xz -9e --verbose "${tarball}"