#!/bin/sh

# Copyright (c) 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>

#

pkgtoolp_restart_at() {

	case "${ARG_RESTART_AT}" in

	ALL)	"${MIDIPIX_BUILD_PWD}/build.sh" -P -r "${PKG_NAME}" -v; ;;

	*)	"${MIDIPIX_BUILD_PWD}/build.sh" -P -r "${PKG_NAME}:${ARG_RESTART_AT}" -v; ;;

	esac;

};

pkgtoolp_shell() {

	rtl_log_msg info "Launching shell \`${SHELL}' within package environment and \`${PKG_BUILD_DIR}'.";

	rtl_log_msg info "Run \$R to rebuild \`${PKG_NAME}'.";

	rtl_log_msg info "Run \$RS <step> to restart the specified build step of \`${PKG_NAME}'";

	rtl_log_msg info "Run \$D to automatically regenerate the patch for \`${PKG_NAME}'.";

	export	ARCH BUILD							\

		BUILD_DLCACHEDIR BUILD_WORKDIR					\

		MAKE="make LIBTOOL=${PKG_LIBTOOL:-slibtool}"			\

		MIDIPIX_BUILD_PWD						\

		PKG_NAME							\

		PREFIX PREFIX_CROSS PREFIX_MINGW32 PREFIX_MINIPIX		\

		PREFIX_NATIVE PREFIX_ROOT PREFIX_RPM;

	D="${MIDIPIX_BUILD_PWD}/${0##*/} --update-diff"				\

	R="${MIDIPIX_BUILD_PWD}/${0##*/} --restart-at ALL"			\

	RS="${MIDIPIX_BUILD_PWD}/${0##*/} --restart-at "			\

	"${SHELL}";

};

pkgtoolp_update_diff() {

	local _diff_fname_dst="" _diff_fname_src="" _fname="" _fname_base="";

	if [ -n "${PKG_VERSION}" ]; then

		_diff_fname_dst="${PKG_NAME}-${PKG_VERSION}.local.patch";

	else

		_diff_fname_dst="${PKG_NAME}.local.patch";

	fi;

	if ! _diff_fname_src="$(mktemp)"; then

		rtl_log_msg failexit "Error: failed to create temporary target diff(1) file.";

	else	trap "rm -f \"${_diff_fname_src}\" >/dev/null 2>&1" EXIT HUP INT TERM USR1 USR2;

		(cd "${PKG_BASE_DIR}" && printf "" > "${_diff_fname_src}";

		 for _fname in $(find "${PKG_SUBDIR}" -iname \*.orig); do

			_fname_base="${_fname##*/}"; _fname_base="${_fname_base%.orig}";

			case "${_fname_base}" in

			config.sub)

				continue; ;;

			*)	diff -u "${_fname}" "${_fname%.orig}" >> "${_diff_fname_src}"; ;;

			esac;

		done);

		if [ "${?}" -ne 0 ]; then

			rtl_log_msg failexit "Error: failed to create diff(1).";

		elif ! rtl_fileop mv "${_diff_fname_src}" "${MIDIPIX_BUILD_PWD}/patches/${_diff_fname_dst}"; then

			rtl_log_msg failexit "Error: failed to rename diff(1) to \`${MIDIPIX_BUILD_PWD}/patches/${_diff_fname_dst}'.";

		else	trap - EXIT HUP INT TERM USR1 USR2;

			rtl_log_msg info "Updated \`${MIDIPIX_BUILD_PWD}/patches/${_diff_fname_dst}'.";

		fi;

	fi;

};

pkgtool() {

	if ! cd "$(dirname "${0}")"\

	|| ! . ./subr/pkgtool_init.subr\

	|| ! pkgtool_init "${@}"; then

		printf "Error: failed to setup environment.\n"; exit 1;

	elif [ ! -e "${BUILD_WORKDIR}/${PKG_NAME}.dump" ]; then

		rtl_log_msg failexit "Error: failed to locate environment dump for package \`${PKG_NAME}' in \`${BUILD_WORKDIR}'.";

	elif ! . "${BUILD_WORKDIR}/${PKG_NAME}.dump"; then

		rtl_log_msg failexit "Error: failed to source environment dump for package \`${PKG_NAME}' from \`${BUILD_WORKDIR}'.";

	elif ! rtl_fileop cd "${PKG_BUILD_DIR}"; then

		rtl_log_msg failexit "Error: failed to change working directory to \`${PKG_BUILD_DIR}'.";

	elif [ -n "${ARG_RESTART_AT}" ]; then

		pkgtoolp_restart_at;

	elif [ "${ARG_UPDATE_DIFF:-0}" -eq 1 ]; then

		pkgtoolp_update_diff;

	else	pkgtoolp_shell;

	fi;

};

set +o errexit -o noglob; pkgtool "${@}";

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