#!/bin/sh
#
# Copyright (C) 2003-2009 FAUmachine Team <info@faumachine.org>.
# This program is free software. You can redistribute it and/or modify it
# under the terms of the GNU General Public License, either version 2 of
# the License, or (at your option) any later version. See COPYING.
#

# CVS information
repository="faui31f:/proj/FAUmachine"
builddir="."
release="HEAD"
module="FAUmachine"
srctar=""

Package=@PACKAGE_NAME@
package=@PACKAGE_TARNAME@

tmpdir="tmpbuild.$$"


# abort if a command fails
set -e

usage()
{
	retval=${1}; shift

	echo "Usage: ${0} <pkg_type> [--option=<value>]*"
	echo "  <pkg_type>: package type (tar, rpm, deb)"
	echo "  possible options are:"
	echo "  --repository=<repository> (default: ${repository})"
	echo "  --builddir=<builddir>     (default: ${builddir})"
	echo "  --release=<release>       (default: ${release})"
	echo "  --module=<module>         (default: ${module})"
	echo "  --srctar=<existing tar>   (default: none)"

	exit ${retval}
}

create_tmpdir()
{
	if [ -d ${tmpdir} ] ; then
		echo "${tmpdir} exists, please remove"
		exit 1
	fi
	mkdir ${tmpdir}
}

create_srctars()
{
	#
	# Create faumachine tarball.
	#
	cvs -qd ${repository} export -r${release_cvs} ${module}
	(set -e; cd ${module}; find . -name .cvsignore | xargs rm )
	mv ${module} ${package}-${release_date}

	#
	# Fix debian changelog file.
	#
	if [ ${release} = HEAD ] ; then
		# Generate temporary paragraph for debian/changelog file.
		(
		echo "faumachine (0.${release_date}.1) unstable; urgency=low"
		awk '/^---/ { exit }; //' ${package}-${release_date}/NEWS \
			| grep -v '^New in'
		echo " -- FAUmachine Team <info@faumachine.org>  `date -R`"
		echo ""
		cat ${package}-${release_date}/debian/changelog
		) > ${package}-${release_date}/debian/changelog.new
		mv ${package}-${release_date}/debian/changelog \
			${package}-${release_date}/debian/changelog.old
		mv ${package}-${release_date}/debian/changelog.new \
			${package}-${release_date}/debian/changelog

	elif grep -q ${release} ${package}-${release_date}/debian/changelog ; then
		# everything ok
		:
	else
		echo "There is no debian/changelog entry for version"
		echo "${release} yet!"
		echo ""
		echo "Update and commit NEWS and debian/changelog files,"
		echo "then re-run $0!"
		exit 1
	fi

	#
	# Create configure scripts.
	#
	# cd ${package}-${release_date}
	# ./autogen.sh
	# cd ..

	#
	# Generate different tarballs.
	#
	srctar=${package}-${release_date}.tar.gz
	tar zcf ${srctar} ${package}-${release_date}
}

build_rpm()
{
	#
	# Generate rpm spec-file.
	#
	(
	echo "Summary: Virtual machine."
	echo "Name: ${package}"
	echo "Version: ${release_date}"
	echo "Release: 1"
	echo "License: GPL"
	echo "Group: unknown"
	echo "URL: http://www.faumachine.org/"
	echo "Buildroot: /tmp/${package}-${release_date}"
	echo ""
	echo "Source: ${package}-${release_date}.tar.gz"

	echo ""

	# %description section
	echo "%description"
	echo "FAUmachine is a virtual machine that can simulate PC hardware."
	echo "..." # FIXME

	echo ""

	# %prep section
	echo "%prep"
	echo "%setup -n ${package}-${release_date}"
	echo "./autogen.sh"

	echo ""

	# %build section
	echo "%build"
	echo './configure --prefix=/usr --mandir=/usr/share/man --disable-prefix-search --enable-build-userguide'
	echo "make"

	echo ""

	# %install section
	echo "%install"
	echo 'rm -rf ${RPM_BUILD_ROOT}'
	echo 'make install DESTDIR=${RPM_BUILD_ROOT}'

	echo ""

	# %clean section
	echo "%clean"
	echo 'rm -rf ${RPM_BUILD_ROOT}'

	# %files sections
	echo "%files"
	echo "%defattr(-,root,root)"
	echo "/usr/bin/faum*"
	# echo "/usr/bin/faum-configurator"
	echo "/usr/bin/activity-designer"
	echo "%dir /usr/lib/${package}"
	echo "/usr/lib/${package}/tools"
	echo "/usr/lib/${package}/roms"
	echo "/usr/share/${package}/"
	# echo "/usr/share/node-elevator/pixmaps/"
	echo "/usr/share/doc/${package}"
	echo "/usr/share/man/"
	) > ${package}.spec

	#
	# Move everything to the correct place.
	#
	mkdir BUILD
	mkdir RPMS
	mkdir RPMS/i386
	mkdir RPMS/i486
	mkdir RPMS/i586
	mkdir RPMS/i686
	mkdir SOURCES
	mkdir SPECS
	mkdir SRPMS
	mv ${package}.spec SPECS
	cp ${srctar} SOURCES/${package}-${release_date}.tar.gz

	#
	# Build srpm.
	#
	# Ugly hack!
	if [ -f ${HOME}/.rpmmacros ] ; then
		mv ${HOME}/.rpmmacros ${HOME}/.rpmmacros.$$
	fi
	echo "%_topdir ${tmpdir}" > ${HOME}/.rpmmacros

	rpm=rpm
	if [ -x `which rpmbuild` ]; then
		rpm=rpmbuild
	fi

	$rpm -bs SPECS/${package}.spec

	rm ${HOME}/.rpmmacros
	if [ -f ${HOME}/.rpmmacros.$$ ] ; then
		mv ${HOME}/.rpmmacros.$$ ${HOME}/.rpmmacros
	fi

	#
	# Copy src.rpm built.
	#
	cp SRPMS/${package}-*.src.rpm ${builddir}
}

build_deb()
{
	# well, it's not easily possible to build a native deb src archive
	# using an existing tar file -> replace .tar.gz later
	tar xzf ${srctar}
	dpkg-source -b ${package}-${release_date}
	base=$(ls *.dsc)
	base=${base%.dsc}
	cp ${srctar} ${builddir}/$base.tar.gz
	grep -v '^ ' $base.dsc > ${builddir}/$base.dsc
	echo " `md5sum<${builddir}/$base.tar.gz|cut -d\  -f1` `wc -c<${builddir}/$base.tar.gz` $base.tar.gz" >> ${builddir}/$base.dsc
	echo
	echo "To build binary packages, execute:"
	echo "	dpkg-source -x $base.dsc"
	echo "	cd `echo ${base} | sed -e 's/_/-/g'`"
	echo "	debuild binary"
}

build_tar()
{
	cp *.tar.gz ${builddir}/
}

test_tag()
{
	cvs -qd ${repository} -n rtag -r${release_cvs} test ${module}
	exit $?
}

cleanup()
{
	rm -rf ${tmpdir}
}

# main() {
	progname=${0}

	if [ $# -lt 1 ] ; then
		usage 1
	fi

	pkgtype=${1}
	shift

	# get options
	while [ $# != 0 ] ; do
		case ${1} in
		--repository=*)
			repository=`echo ${1} | sed -e 's/--repository=//'`
			;;
		--builddir=*)
			builddir=`echo ${1} | sed -e 's/--builddir=//'`
			;;
		--release=*)
			release=`echo ${1} | sed -e 's/--release=//'`
			;;
		--module=*)
			module=`echo ${1} | sed -e 's/--module=//'`
			;;
		--srctar=*)
			srctar=`echo ${1} | sed -e 's/--srctar=//'`
			;;
		*)
			usage 1
			;;
		esac
		shift
	done

	if [ ${release} = HEAD ] ; then
		release_date=`date +'%Y%m%d'`
		release_cvs=HEAD
	else
		release_date=${release}
		release_cvs=v${release}
	fi

	if [ "${pkgtype}" = testtag ]; then
		test_tag
	fi

	cd ${builddir}
	builddir=`pwd`

	create_tmpdir
	cd ${tmpdir}
	tmpdir=`pwd`

	[ "$srctar" ] || create_srctars

	case ${pkgtype} in
	rpm)
		build_rpm
		;;
	deb)
		build_deb
		;;
	tar)
		build_tar
		;;
	*)
		usage 1
		;;
	esac
	
	cd ${builddir}
	cleanup
# }