#!/bin/sh
# System Package Installer

DIR=${2}
TARGET=${3}

BINDIR=${DIR}/bin
SBINDIR=${DIR}/sbin
LIBDIR=${DIR}/lib
INCLUDEDIR=${DIR}/include
SHAREDIR=${DIR}/share

usage() {
	printf "${0} - Install a package\n"
	printf "usage: ${0} [-h] [-i] DIR TARGET\n"
	printf "\n"
	printf "${0} {-h}		Show this message\n"
	printf "${0} {-i DIR TARGET}	Install package DIR to directory TARGET\n"
	printf "\n"
	printf "Spi is free software.\n"
	printf "See the GNU GPL version 3 for details.\n"
}

usage_small() {
	printf "usage ${0} [-h] [-i] DIR\n"
}

check_if_input_is_blank() {
	if [ "${2}" == "" ]; then
		printf "Package directory not specified.\n"
		exit 1
	fi

	if [ "${3}" == "" ]; then
		printf "Target directory not specified.\n"
		exit 1
	fi
}

check_if_dir_is_pkg() {
	if [ ! -f "${DIR}/.ispkg" ]; then
		printf "Directory isn't a package.\n"
		exit 1
	fi
}

install_bin() {
	if [ -d "${DIR}/bin" ]; then
		cp -rv ${BINDIR}/* ${TARGET}/bin
	else
		printf "Skipping directory 'bin'\n"
	fi
}

install_sbin() {
	if [ -d "${DIR}/sbin" ]; then
		cp -rv ${SBINDIR}/* ${TARGET}/sbin
	else
		printf "Skipping directory 'sbin'\n"
	fi
}

install_lib() {
	if [ -d "${DIR}/lib" ]; then
		cp -rv ${LIBDIR}/* ${TARGET}/lib
	else
		printf "Skipping directory 'lib'\n"
	fi
}

install_include() {
	if [ -d "${DIR}/include" ]; then
		cp -rv ${INCLUDEDIR}/* ${TARGET}/include
	else
		printf "Skipping directry 'include'\n"
	fi
}

install_share() {
	if [ -d "${DIR}/share" ]; then
		cp -rv ${SHAREDIR}/* ${TARGET}/share
	else
		printf "Skipping directory 'share'\n"
	fi
}

case $1 in
	-h)
		usage "$@"
		exit 0
	;;
	-i)
		check_if_input_is_blank "$@"
		check_if_dir_is_pkg "$@"
		install_bin "$@"
		install_sbin "$@"
		install_lib "$@"
		install_include "$@"
		install_share "$@"
		exit 0
	;;
	-*)
		usage_small "$@"
		exit 1
	;;
	*)
		usage_small "$@"
		exit 1
esac

usage_small "$@"
exit q