#!/bin/sh

# Copyright (c) 2020 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>

#

pkgtoolp_info() {

	local	_pkg_name="${1}" _group_name="" _pkg_name_uc="$(rtl_toupper "${1}")" _fname="" _pkg_names=""\

		_rc=0 EX_PKG_BUILD_GROUPS="" EX_PKG_DISABLED="" EX_PKG_FINISHED="" EX_PKG_NAMES=""; _status="";

	if ! ex_pkg_load_groups; then

		_rc=1; _status="Error: failed to load build groups.";

	elif ! _group_name="$(ex_pkg_find_package "${EX_PKG_BUILD_GROUPS}" "${_pkg_name}")"; then

		_rc=1; _status="Error: unknown package \`${_pkg_name}'.";

	elif ! _pkg_names="$(ex_pkg_get_packages "${_group_name}")"; then

		_rc=1; _status="Error: failed to expand package list of build group \`${_group_name}'.";

	elif ! ex_pkg_env "${DEFAULT_BUILD_STEPS}" "${DEFAULT_BUILD_VARS}"\

			"${_group_name}" 1 "${_pkg_name}" "" "${BUILD_WORKDIR}"; then

		_rc=1; _status="Error: failed to set package environment for \`${_pkg_name}'.";

	else	_pkg_version="$(rtl_get_var_unsafe -u "PKG_"${_pkg_name}"_VERSION")";

		rtl_log_env_vars "package" $(rtl_get_vars_fast "^PKG_${_pkg_name_uc}");

		rtl_log_msg info "Build group: %s" "${_group_name}";

		if [ -z "${PKG_DEPENDS:-}" ]; then

			rtl_log_msg info "Package \`%s' has no dependencies." "${_pkg_name}";

		else	rtl_log_msg info "Direct dependencies of \`%s': %s" "${_pkg_name}" "${PKG_DEPENDS}";

			if ! ex_pkg_unfold_depends 1 1 "${_group_name}" "${_pkg_names}" "${_pkg_name}" 0; then

				rtl_log_msg warning "Warning: failed to unfold dependency-expanded package name list for \`%s'." "${_pkg_name}";

			else	EX_PKG_NAMES="$(rtl_lfilter "${EX_PKG_NAMES}" "${_pkg_name}")";

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

					rtl_log_msg info "Full dependencies of \`%s': %s"\

							"${_pkg_name}" "$(rtl_lsort "${EX_PKG_NAMES}")";

				fi;

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

					rtl_log_msg info "Full dependencies of \`%s' (disabled packages:) %s"\

							"${_pkg_name}" "$(rtl_lsort "${EX_PKG_DISABLED}")";

				fi;

			fi;

		fi;

		set +o noglob;

		for _fname in	\

				"vars/${_pkg_name}.vars"								\

				"patches/${_pkg_name}/"*.patch								\

				"patches/${_pkg_name}${_pkg_version:+-${_pkg_version}}.local.patch"			\

				"patches/${_pkg_name}${_pkg_version:+-${_pkg_version}}.local@${BUILD_HNAME}.patch"	\

				"patches/${_pkg_name}${_pkg_version:+-${_pkg_version}}_pre.local.patch"			\

				"patches/${_pkg_name}${_pkg_version:+-${_pkg_version}}_pre.local@${BUILD_HNAME}.patch"	\

				"${BUILD_WORKDIR}/chainport/patches/${_pkg_name%%_*}/${_pkg_name%%_*}-${_pkg_version}.midipix.patch"; do

			if [ -e "${_fname}" ]; then

				sha256sum "${_fname}";

			fi;

		done;

		set -o noglob;

	fi; return "${_rc}";

};

pkgtoolp_mirror() {

	local	_mirror_dnames="${1}" _group_name="" _mirror_dname="" _mirror_dname_git=""\

		_pkg_name="" _pkg_parent="" _rc=0;

	rtl_lassign "_mirror_dname _mirror_dname_git" "," "${_mirror_dnames}"; umask 022;

	if ! ex_pkg_load_groups; then

		_rc=1; _status="Error: failed to load build groups.";

	elif ! rtl_fileop mkdir "${_mirror_dname}"; then

		_rc=1; _status="Error: failed to create \`${_mirror_dname}'.";

	elif ! rtl_fileop mkdir "${_mirror_dname_git}"; then

		_rc=1; _status="Error: failed to create \`${_mirror_dname_git}'.";

	else	for _group_name in ${EX_PKG_BUILD_GROUPS}; do

			for _pkg_name in $(ex_pkg_get_packages "${_group_name}"); do

				_pkg_parent="$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_INHERIT_FROM")";

				if ! pkgtoolp_mirror_fetch						\

						"${_mirror_dname}" "${_mirror_dname_git}" "${_pkg_name}"\

						"${_pkg_parent:-${_pkg_name}}"; then

					_rc=1; _status="Warning: failed to mirror one or more packages.";

				fi;

			done;

		done;

	fi; return "${_rc}";

};

pkgtoolp_mirror_fetch() {

	local	_mirror_dname="${1}" _mirror_dname_git="${2}" _pkg_name="${3}" _pkg_name_real="${4}"\

		_pkg_disabled=0 _pkg_sha256sum="" _pkg_url="" _rc=0;

	if _pkg_disabled="$(rtl_get_var_unsafe -u "PKG_${_pkg_name_real}_DISABLED")"\

	&& [ "${_pkg_disabled:-0}" -eq 1 ]; then

		rtl_log_msg info "Package \`%s' (parent package: \`%s') disabled, skipping." "${_pkg_name}" "${_pkg_name_real}";

	else	if _pkg_url="$(rtl_get_var_unsafe -u "PKG_${_pkg_name_real}_URL")"\

		&& _pkg_sha256sum="$(rtl_get_var_unsafe -u "PKG_${_pkg_name_real}_SHA256SUM")"; then

			if [ "${_pkg_name}" != "${_pkg_name_real}" ]; then

				rtl_log_msg info "Mirroring package \`%s' (parent package: \`%s'), archive URL(s): \`%s'..." "${_pkg_name}" "${_pkg_name_real}" "${_pkg_url}";

				if ! rtl_fileop ln_symbolic "${_pkg_name_real}" "${_mirror_dname}/${_pkg_name}"; then

					_rc=1; rtl_log_msg warning "Failed to create symbolic link \`%s' for package \`%s' w/ parent package \`%s'."\

							"${_mirror_dname}/${_pkg_name}" "${_pkg_name}" "${_pkg_name_real}";

				fi;

			else

				rtl_log_msg info "Mirroring package \`%s', archive URL(s): \`%s'..." "${_pkg_name}" "${_pkg_url}";

				if ! rtl_fileop mkdir "${_mirror_dname}/${_pkg_name}"\

				|| ! rtl_fetch_url_wget "${_pkg_url}" "${_pkg_sha256sum}" "${_mirror_dname}/${_pkg_name}" "${_pkg_url##*/}" "${_pkg_name_real}" ""; then

					_rc=1; rtl_log_msg warning "Failed to mirror package \`%s', skipping." "${_pkg_name}";

				fi;

			fi;

		elif _pkg_url="$(rtl_get_var_unsafe -u "PKG_${_pkg_name_real}_URLS_GIT")"; then

			if [ "${_pkg_name}" != "${_pkg_name_real}" ]; then

				rtl_log_msg info "Mirroring package \`%s' (parent package: \`%s'), Git URL(s): \`%s'..." "${_pkg_name}" "${_pkg_name_real}" "${_pkg_url}";

				if ! rtl_fileop ln_symbolic "${_pkg_name_real}" "${_mirror_dname_git}/${_pkg_name}"; then

					_rc=1; rtl_log_msg warning "Failed to create symbolic link \`%s' for package \`%s' w/ parent package \`%s'."\

							"${_mirror_dname_git}/${_pkg_name}" "${_pkg_name}" "${_pkg_name_real}";

				fi;

			else

				rtl_log_msg info "Mirroring package \`%s', Git URL(s): \`%s'..." "${_pkg_name}" "${_pkg_url}";

				if ! rtl_fileop mkdir "${_mirror_dname_git}/${_pkg_name}"\

				|| ! rtl_fetch_mirror_urls_git "${DEFAULT_GIT_ARGS}" "${_mirror_dname_git}/${_pkg_name}" ${_pkg_url}; then

					_rc=1; rtl_log_msg warning "Failed to mirror package \`%s', skipping." "${_pkg_name}";

				fi;

			fi;

		else

			_rc=1; rtl_log_msg warning "Package \`%s' has neither archive nor Git URL(s), skipping." "${_pkg_name}";

		fi;

	fi; return "${_rc}";

};

pkgtoolp_restart_at() {

	local _pkg_name="${1}" _rc=0; _status="";

	if ! ex_pkg_load_dump "${_pkg_name}" "${BUILD_WORKDIR}"; then

		_rc=1; _status="${_status}";

	else	case "${ARG_RESTART_AT}" in

		ALL)	if ! "${MIDIPIX_BUILD_PWD}/build.sh" -P -r "${_pkg_name}" -v; then

				_rc=1; _status="Error: failed to run command line ${MIDIPIX_BUILD_PWD}/build.sh -P -r ${_pkg_name} -v";

			fi; ;;

		*)	if ! "${MIDIPIX_BUILD_PWD}/build.sh" -P -r "${_pkg_name}:${ARG_RESTART_AT}" -v; then

				_rc=1; _status="Error: failed to run command line ${MIDIPIX_BUILD_PWD}/build.sh -P -r ${_pkg_name}:${ARG_RESTART_AT} -v";

			fi; ;;

		esac;

	fi; return "${_rc}";

};

pkgtoolp_rdepends() {

	local	_pkg_name="${1}" _group_name="" _pkg_depends="" _pkg_name_rdepend="" _pkg_names=""\

		_pkg_rdepends="" _rc=0 EX_PKG_BUILD_GROUPS="" EX_PKG_DISABLED="" EX_PKG_RDEPENDS_DIRECT=""; _status="";

	if ! ex_pkg_load_groups; then

		_rc=1; _status="Error: failed to load build groups.";

	elif ! _group_name="$(ex_pkg_find_package "${EX_PKG_BUILD_GROUPS}" "${_pkg_name}")"; then

		_rc=1; _status="Error: unknown package \`${_pkg_name}'.";

	elif ! _pkg_names="$(ex_pkg_get_packages "${_group_name}")"; then

		_rc=1; _status="Error: failed to expand package list of build group \`${_group_name}'.";

	elif ! ex_pkg_unfold_rdepends_direct "${_group_name}" "${_pkg_names}" "${_pkg_name}"; then

		_rc=1; _status="Error: failed to unfold reverse dependency-expanded package name list for \`${_pkg_name}'.";

	elif [ -z "${EX_PKG_DISABLED}" ] && [ -z "${EX_PKG_RDEPENDS_DIRECT}" ]; then

		rtl_log_msg info "Package \`%s' has no reverse dependencies." "${_pkg_name}";

	else	for _pkg_name_rdepend in $(rtl_lsort "${EX_PKG_RDEPENDS_DIRECT}"); do

			_pkg_rdepends="$(rtl_lconcat "${_pkg_rdepends}" "${_pkg_name_rdepend}")";

			if _pkg_depends="$(rtl_lunfold_depends 'PKG_${_name}_DEPENDS' $(rtl_get_var_unsafe -u "PKG_"${_pkg_name}"_DEPENDS"))"\

			&& [ -n "${_pkg_depends}" ]; then

				_pkg_rdepends="$(rtl_lconcat "${_pkg_rdepends}" "?[33m${_pkg_depends}?[93m")";

			fi;

		done;

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

			rtl_log_msg info "Reverse dependencies of \`%s': %s" "${_pkg_name}" "${_pkg_rdepends}";

		fi;

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

			rtl_log_msg info "Reverse dependencies of \`%s' (disabled packages:) %s"\

					"${_pkg_name}" "$(rtl_lsort "${EX_PKG_DISABLED}")";

		fi;

	fi; return "${_rc}";

};

pkgtoolp_shell() {

	local _pkg_name="${1}" _rc=0; _status="";

	if ! ex_pkg_load_dump "${_pkg_name}" "${BUILD_WORKDIR}"; then

		_rc=1; _status="${_status}";

	else	rtl_log_env_vars "package" $(rtl_get_vars_fast "^PKG_");

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

		rtl_log_msg info "Run \$R to rebuild \`%s'." "${_pkg_name}";

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

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

		export	ARCH BUILD_KIND						\

			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}";

	fi; return "${_rc}";

};

pkgtoolp_tarball() {

	local	_pkg_name="${1}" _date="" _group_name="" _hname="" _pkg_name_full=""\

		_pkg_version="" _rc=0 _tarball_fname="" EX_PKG_BUILD_GROUPS=""; _status="";

	if ! ex_pkg_load_groups; then

		_rc=1; _status="Error: failed to load build groups.";

	elif ! _group_name="$(ex_pkg_find_package "${EX_PKG_BUILD_GROUPS}" "${_pkg_name}")"; then

		_rc=1; _status="Error: unknown package \`${_pkg_name}'.";

	elif ! ex_pkg_env "${DEFAULT_BUILD_STEPS}" "${DEFAULT_BUILD_VARS}"	\

			"${_group_name}" 0 "${_pkg_name}" "" "${BUILD_WORKDIR}"; then

		_rc=1; _status="Error: failed to set package environment for \`${_pkg_name}'.";

	elif ! _date="$(date +%Y%m%d_%H%M%S)"; then

		_rc=1; _status="Error: failed to call date(1).";

	elif ! _hname="$(hostname -f)"; then

		_rc=1; _status="Error: failed to call hostname(1).";

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

			_pkg_name_full="${_pkg_name}-${PKG_VERSION}";

		else

			_pkg_name_full="${_pkg_name}";

		fi;

		_tarball_fname="${_pkg_name_full}@${_hname}-${_date}.tbz2";

		rtl_log_msg info "Creating compressed tarball of \`%s' and \`%s_stderrout.log'..."\

				"${PKG_BASE_DIR}" "${_pkg_name}";

		if ! tar -C "${BUILD_WORKDIR}" -cpf -				\

				"${PKG_BASE_DIR#${BUILD_WORKDIR%/}/}"		\

				"${_pkg_name}_stderrout.log"			|\

					bzip2 -c -9 - > "${_tarball_fname}"; then

			_rc=1; _status="Error: failed to create compressed tarball of \`${PKG_BASE_DIR}' and \`${_pkg_name}_stderrout.log'.";

		else

			rtl_log_msg info "Created compressed tarball of \`%s' and \`%s_stderrout.log'."\

					"${PKG_BASE_DIR}" "${_pkg_name}";

		fi;

	fi; return "${_rc}";

};

pkgtoolp_update_diff() {

	local	_pkg_name="${1}" _diff_fname_dst="" _diff_fname_src="" _fname=""\

		_fname_base="" _rc=0; _status="";

	if ! ex_pkg_load_dump "${_pkg_name}" "${BUILD_WORKDIR}"; then

		_rc=1; _status="${_status}";

	else	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

			_rc=1; _status="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

				_rc=1; _status="Error: failed to create diff(1).";

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

				_rc=1; _status="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 \`%s/patches/%s'."\

						"${MIDIPIX_BUILD_PWD}" "${_diff_fname_dst}";

			fi;

		fi;

	fi; return "${_rc}";

};

pkgtool() {

	local _rc=0 _status="" BUILD_GROUPS="" ARCH BUILD_KIND BUILD_WORKDIR PKGTOOL_PKGNAME PREFIX;

	if ! . "${0%/*}/subr/pkgtool_init.subr"; then

		_rc=1; printf "Error: failed to source \`${0%/*}/subr/pkgtool_init.subr'." >&2;

	elif ! pkgtool_init "${@}"; then

		_rc=1; _status="${_status}";

	else	case "1" in

		"${ARG_INFO:-0}")		pkgtoolp_info "${PKGTOOL_PKG_NAME}"; ;;

		"${ARG_MIRROR:-0}")		pkgtoolp_mirror "${ARG_MIRROR_DNAME}"; ;;

		"${ARG_RDEPENDS:-0}")		pkgtoolp_rdepends "${PKGTOOL_PKG_NAME}"; ;;

		"${ARG_RESTART_AT:+1}")		pkgtoolp_restart_at "${PKGTOOL_PKG_NAME}"; ;;

		"${ARG_SHELL:-0}")		pkgtoolp_shell "${PKGTOOL_PKG_NAME}"; ;;

		"${ARG_TARBALL:-0}")		pkgtoolp_tarball "${PKGTOOL_PKG_NAME}"; ;;

		"${ARG_UPDATE_DIFF:-0}")	pkgtoolp_update_diff "${PKGTOOL_PKG_NAME}"; ;;

		esac; _rc="${?}";

	fi;

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

		rtl_log_msg fatalexit "${_status}";

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

		rtl_log_msg info "${_status}";

	fi;

};

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

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