#!/bin/sh

# Copyright (C) 2015 by Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
#
# This is free software; you can redistribute it and/or modify
# it under the tBerms 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 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.

# Thanks to Jonas Smedegaard <dr@jones.dk> for inspiration...

set -e

RELEASE="$1"
test -n "$RELEASE" || { echo "usage: $(basename "$0") <release-version> [<checkout>]"; exit 1; }

CHECKOUT="${2:-master}"

PROJECT="$(basename $PWD)"
TARGETDIR=".."

MANIFEST="$(mktemp)"
TEMP_DIR="$(mktemp -d)"

echo $MANIFEST

trap "rm -f \"${MANIFEST}\"; rm -rf \"${TEMP_DIR}\"" 0
git clone . "$TEMP_DIR/${PROJECT}-$RELEASE"
( set -e; cd "$TEMP_DIR/${PROJECT}-$RELEASE/" && git checkout ${CHECKOUT} 2>/dev/null || true )
( set -e; cd "$TEMP_DIR" && rm -Rf "${PROJECT}-$RELEASE/.git"* )
( set -e; cd "$TEMP_DIR/${PROJECT}-$RELEASE/" && test -f ChangeLog || { test -f debian/changelog && cp debian/changelog ChangeLog || true; } )
( set -e; cd "$TEMP_DIR/${PROJECT}-$RELEASE/" && rm -Rf debian/ )
( set -e; cd "$TEMP_DIR/${PROJECT}-$RELEASE/" && rm -f *.spec )
( set -e; cd "$TEMP_DIR/" && find "${PROJECT}-$RELEASE" -type f | sed 's/^\.*\/*//' | sort > "$MANIFEST" )
mkdir -p "$TARGETDIR/_releases_/source/${PROJECT}/"
tar c -C "$TEMP_DIR" --owner 0 --group 0 --numeric-owner --no-recursion --files-from "$MANIFEST" | gzip -n > "$TARGETDIR/_releases_/source/${PROJECT}/${PROJECT}-$RELEASE.tar.gz"