#!/bin/bash
set -e

function echo_usage {
	echo "usage: configure <paket> <svn-version> [options]"
	echo "	-b <branch-rev>"
	echo "	paket: liberic | libmeric"
}


if [ $# -lt 2 ]
then
	echo_usage
	exit 1
fi

cwd=$(pwd)

paket=$1
build=$2
ARCH=i386

# prepare environment

# serach for ERiC-<version> directory
eric_dir=$(ls -d ERiC-*)

case $paket in
liberic)
	eric_version=${eric_dir#ERiC-}
	;;
libmeric)
	# checkout build utilities
	if [ ! -e Make ]; then
		svn co https://wagnertech.de/svn/projekte/tools/Make
	fi
	ln -sf Make/makefile .

	# load util functions for C/C++ - build
	. Make/c_configure.sh
	;;
*)
	echo "invalid package: $paket"
	echo_usage
	exit 1
esac

# checkout etc
echo "Checkout data"
if [ -d src ]
then
	rm -rf src
fi
if [ -e $paket ]
then
	rm -rf $paket
fi
rm *.stamp || true
mkdir src
pushd src
	svn co -r $build https://wagnertech.de/svn/mebil/etc

	# check existence of control file
	ls etc/$paket.control >/dev/null

	# in parallel write cp script and make.pre
	echo "#!/bin/bash" > $cwd/cp.sh
	echo "# mBuild cp script (auto generated)" >> $cwd/cp.sh
	echo "set -e" >> $cwd/cp.sh

	echo "# mBuild make.pre script (auto generated)" > $cwd/make.pre
	echo "project = $paket" >> $cwd/make.pre
	echo "arch = $ARCH" >> $cwd/make.pre
	echo "COPY = ./cp.sh" >> $cwd/make.pre
	echo "_arch = _${ARCH}" >> $cwd/make.pre

	case $paket in
	liberic)
		echo "mkdir -p $paket/usr/lib/ERiC-$eric_version" >> $cwd/cp.sh
		echo "ln -sf /usr/lib/ERiC-$eric_version $paket/usr/lib/eric" >> $cwd/cp.sh
		echo "cp -a $cwd/$eric_dir/Linux-i686/lib/* $paket/usr/lib/ERiC-$eric_version/" >> $cwd/cp.sh

		# copy package control
		sed "s/%VERSION%/$eric_version-$build/" etc/$paket.control |sed "s/%ARCH%/$ARCH/" >../$paket.control
		echo "$paket.control written."
		;;
	libmeric)
		svn co -r $build https://wagnertech.de/svn/mebil/csrc/eric
		echo "Prepare compile environment"

		pushd eric
			ln -sf $cwd/$eric_dir/Linux-i686/Beispiel/ericdemo-cpp/ericdemo/anwendungsfehler* .
			ln -sf $cwd/$eric_dir/Linux-i686/Beispiel/ericdemo-cpp/ericdemo/eric* .
			ln -sf $cwd/$eric_dir/Linux-i686/Beispiel/ericdemo-cpp/ericdemo/resolve* .
			ln -sf $cwd/$eric_dir/Linux-i686/Beispiel/ericdemo-cpp/ericdemo/system* .
			ln -sf $cwd/$eric_dir/Linux-i686/Beispiel/ericdemo-cpp/ericdemo/datensatz* .
			ln -sf $cwd/$eric_dir/Linux-i686/Beispiel/ericdemo-cpp/ericdemo/callbackhandler* .
		popd

		install_cpp_make eric
		add_include_dir $cwd/$eric_dir/Linux-i686/include eric
		echo "mkdir -p $paket/usr/lib" >> $cwd/cp.sh
		echo "cp src/eric/libmERiC.so $paket/usr/lib/" >> $cwd/cp.sh
		echo "COMPILE = cd src/eric && make TARGET=libmERiC.so" >> $cwd/make.pre

		# copy package control
		sed "s/%BUILD%/$build/" etc/$paket.control |sed "s/%ARCH%/$ARCH/" >../$paket.control
		echo "$paket.control written."
		;;
	*)
		echo "invalid package: $paket"
		echo_usage
		exit 1
	esac
popd


chmod 755 cp.sh

# extract version
version=$(grep Version $paket.control |sed "s/Version: //")
echo "version = $version" >> $cwd/make.pre

echo "configure ended successfully."