#!/usr/bin/env bash
VERSION=3.0.3.4
PACKAGE=monodevelop_addinauthoring
prefix=/usr/local
config=DEBUG
configurations=" RELEASE DEBUG"
common_packages=" monodevelop;3.0.3.4 gtk-sharp-2.0;2.12.8 mono-addins-setup;0.4 mono-addins;0.5"


usage ()
{
	echo "Usage : configure [--prefix=PREFIX] [--config=CONFIG]"
	echo
	echo "Configurations available :"
	for c in $configurations; do
		if [ "$c" = "$config" ]; then
			echo "        $c (Default)"
		else
			echo "        $c"
		fi
	done
}

validate_config ()
{
	test -z "$1" && return 0
	for c in $configurations; do
		if [ "$c" = "$1" ]; then
			return 1
		fi
	done
	return 0
}

check_package ()
{
	name=`echo $1 | cut -d\; -f1`
	version=`echo $1 | cut -d\; -f2`

	echo -n "Checking for package '$name'.." | tee -a config.log
	pkg-config --atleast-version=$version $name
	if [ $? -ne 0 ]; then
		echo " ERROR: Package named '$name' >= $version not found." | tee -a config.log
		echo "Try adjusting your PKG_CONFIG_PATH environment variable." | tee -a config.log
		return 1
	fi
	echo " found." | tee -a config.log
}

check_required_packages ()
{
	echo "Looking for required packages" | tee config.log
	var=required_packages_$config
	for pkg in $common_packages ${!var}; do
		check_package $pkg
		retval=$?
		[ $retval -ne 0 ] && return $retval
	done
	return 0
}

while test x$1 != x; do
		case $1 in
		--prefix=*)
				prefix=`echo $1 | sed 's/--prefix=//'`
				;;
		--prefix)
				shift
				prefix=$1
				;;
		--config=*)
				conf=`echo $1 | sed 's/--config=//'`
				validate_config "$conf"
				if [ $? -eq 1 ]; then
					config=$conf
				else
					echo "Invalid config name - $conf"
					usage
					exit 1
				fi
                ;;
		--help)
			usage
			exit
			;;
		*)
			echo Unknown argument $1 >&2
			usage
			exit 1
			;;
		esac
		shift
done

check_required_packages
[ $? -eq 1 ] && exit 1

echo "prefix=$prefix" > config.make
echo "RUNTIME=mono" >> config.make
echo "ASSEMBLY_VERSION=$VERSION.0.0" >> config.make
echo "VERSION=$VERSION" >> config.make
echo "PACKAGE=$PACKAGE" >> config.make
echo "CONFIG=$config" >> config.make

echo
echo "$PACKAGE has been configured with "
echo "        prefix = $prefix"
echo "        config = $config"
echo