#!/bin/bash
# A script for building of LibUCW packages
# (c) 2013--2017 Pavel Charvat <pchar@ucw.cz>

set -e
. debian/pkg-lib

function usage {
	cat >&2 <<EOF
Usage: $0 <options>
Options:
--archonly		Build only binary packages
--no-source		Don't build source files
--cleanup		Cleanup temporary files when finished
--version=<ver>		Custom version number of resulting packages (default: autodetect from git-describe)
--abi-version=<ver>	Custom version number of the LibUCW's ABI (default: defined in ucw/default.cfg)
--gen-script=<script>	Custom script to postprocess
--extra-conf=<args>	Add extra arguments to the configure script
--no-checkout		Expect manually checked out sources to build directory (useful for chrooted building; --version is mandatory)
EOF
	exit 1
}

function pkg-gen-debian {(
	cd $BUILDDIR
	echo "Configuring"
	./configure debian/config VER="$VER" TREEHASH="$TREEHASH" $CONF \
		PREFIX=/ \
		INSTALL_INCLUDE_DIR=/usr/include/libucw \
		INSTALL_DOC_DIR=/usr/share/doc/libucw/html \
		INSTALL_CONFIG_DIR=/usr/share/doc/libucw/examples/etc

	echo "Creating debian/control"
	build/genconf debian/control.in debian/control obj/config.mk

	if [ -n "$GEN_SCRIPT" ] ; then
		echo "Executing $GEN_SCRIPT"
		eval "$GEN_SCRIPT"
	fi

	echo "Creating debian/changelog"
	export EDITOR=true
	CL=debian/changelog
	rm -f $CL
	dch --changelog=$CL --create --package=$PKG --newversion=$VER "Automatic release."
	dch --changelog=$CL --release
	sed -i '/Initial release/d' $CL
)}

ROOT="`pwd`"
PKG=libucw
ARCHONLY=
NO_SOURCE=
CLEANUP=
CONF=
GEN_SCRIPT=
while [ -n "$1" ] ; do
	case "$1" in
	--archonly)	ARCHONLY=1
			;;
	--no-source)	NO_SOURCE=1
			;;
	--cleanup)	CLEANUP=1
			;;
	--version=*)	PKGVER="${1:10}"
			;;
	--abi-version=*)CONF="$CONF UCW_ABI_SUFFIX=-${1:14}"
			;;
	--gen-script=*)	GEN_SCRIPT="${1:13}"
			;;
	--extra-conf=*)	CONF="$CONF ${1:13}"
			;;
	--no-checkout)	PKG_NO_CHECKOUT=1
			;;
	*)		usage
			;;
	esac
	shift
done

pkg-git-version
pkg-git-checkout

echo $VER >$BUILDDIR/UCW_VERSION
pkg-gen-debian

BUILDOPTS=
if [ -n "$ARCHONLY" ] ; then
	BUILDOPTS=-B
elif [ -n "$NO_SOURCE" ] ; then
	BUILDOPTS=-b
fi
(cd $BUILDDIR && dpkg-buildpackage -rfakeroot -us -uc $BUILDOPTS)
[ -z "$ARCHONLY" ] || rm -f debian-tmp/*_all.deb
pkg-get-files debian-tmp/*.{deb,dsc,changes,tar.gz}

[ -z "$CLEANUP" ] || pkg-cleanup