#!/bin/sh

# Copyright (c) 2016, 2017 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>

#

buildp_dispatch() {

	local _msg="${1}" _pkg_name="${2}" _tgt_name="${3}"					\

		_build_tgt_meta="" _build_tgt_lc="" _build_tgts_lc="" _last_pkg="" _pkg_restart="" PKGS_FOUND;

	case "${_msg}" in

	# Top-level

	start_build)	shift; build_args "${@}"; build_init;

			ex_rtl_log_set_vnfo_lvl "${ARG_VERBOSE:-0}";

			ex_rtl_log_msg info "Build started by ${BUILD_USER:=${USER}}@${BUILD_HNAME:=$(hostname)} at ${BUILD_DATE_START}.";

			ex_rtl_log_env_vars "build (global)" ${DEFAULT_LOG_ENV_VARS};

			_build_tgts_lc="${BUILD_TARGETS:-${TARGETS_DEFAULT}}";

			if ! ex_rtl_lmatch "${ARG_DIST}" , rpm; then

				_build_tgts_lc="$(ex_rtl_lfilter_not "${_build_tgts_lc}" "host_tools_rpm")";

			fi;

			if [ "${ARG_RESTART}" = "LAST" ]; then

				if [ -n "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}" ]\

				&& [ -e "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}" ]; then

					_last_pkg="$(cat "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}")";

					ex_rtl_fileop rm "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}";

					ex_rtl_state_clear "${BUILD_WORKDIR}" "${_last_pkg}";

				fi;

			fi;

			PKGS_FOUND="";

			for _build_tgt_lc in ${_build_tgts_lc}; do

				ex_pkg_dispatch "${_build_tgt_lc}"				\

						"${ARG_RESTART}" "${ARG_RESTART_AT}"		\

						buildp_dispatch PKGS_FOUND;

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

					break;

				fi;

			done;

			for _pkg_restart in ${ARG_RESTART}; do

				if ! ex_rtl_lmatch "ALL LAST" " " "${_pkg_restart}"		\

				&& ! ex_rtl_lmatch "${PKGS_FOUND}" " " "${_pkg_restart}"; then

					ex_rtl_log_msg failexit "Error: package \`${_pkg_restart}' unknown.";

				fi;

			done;

			if ! ex_pkg_dispatch "invariants" "ALL" "ALL" buildp_dispatch ""; then

				break;

			fi;

			buildp_dispatch finish_build; ;;

	finish_build)	build_fini;

			ex_rtl_log_msg info "${BUILD_NFINI} finished, ${BUILD_NSKIP} skipped, and ${BUILD_NFAIL} failed builds in ${BUILD_NBUILT} build script(s).";

			ex_rtl_log_msg info "Build time: ${BUILD_TIMES_HOURS} hour(s), ${BUILD_TIMES_MINUTES} minute(s), and ${BUILD_TIMES_SECS} second(s).";

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

				ex_rtl_log_msg failexit "Build script failure(s) in: ${BUILD_PKGS_FAILED}.";

			fi; ;;

	# Target build

	start_target)	ex_rtl_log_msg inf2 "Starting \`${_tgt_name}' build target..."; ;;

	finish_target)	ex_rtl_log_msg suc2 "Finished \`${_tgt_name}' build target."; ;;

	# Package build

	start_pkg)	ex_rtl_log_msg info "Starting \`${_pkg_name}' build..."; ;;

	finish_pkg)	: $((BUILD_NFINI+=1));

			if [ "${ARG_VERBOSE:-0}" -ge 2 ]; then

				cat "${BUILD_WORKDIR}/${_pkg_name}_stderrout.log";

			fi;

			ex_rtl_log_msg succ "Finished \`${_pkg_name}' build."; ;;

	fail_pkg)	: $((BUILD_NFAIL+=1));

			BUILD_PKGS_FAILED="${BUILD_PKGS_FAILED:+${BUILD_PKGS_FAILED} }${_pkg_name}";

			if [ "${ARG_RELAXED:-0}" -eq 1 ]; then

				ex_rtl_log_msg fail "Build failed in \`${_pkg_name}', check \`${BUILD_WORKDIR}/${_pkg_name}_stderrout.log' for details.";

			else

				ex_rtl_log_msg fail "${BUILD_WORKDIR}/${_pkg_name}_stderrout.log:";

				cat "${BUILD_WORKDIR}/${_pkg_name}_stderrout.log";

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

					echo "${_pkg_name}" > "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}";

				fi;

				ex_rtl_log_msg fail "Build failed in \`${_pkg_name}'.";

				if [ "${ARG_PARALLEL:-0}" -eq 1 ]; then

					ex_rtl_log_msg fail "Terminating pending builds...";

					pkill -P "${$}";

				fi;

				exit 1;

			fi; ;;

	disabled_pkg)	ex_rtl_log_msg vnfo "Skipping disabled package \`${_pkg_name}.'"; ;;

	skipped_pkg)	ex_rtl_log_msg vnfo "Skipping finished package \`${_pkg_name}.'"; ;;

	step_pkg)	ex_rtl_log_msg vucc "Finished build step ${4} of package \`${_pkg_name}'."; ;;

	# Child process

	exec_finish)	;;

	exec_missing)	ex_rtl_log_msg failexit "Error: package \`${_pkg_name}' missing in build.vars."; ;;

	exec_start)	if [ "${PKG_NO_LOG_VARS:-0}" -eq 0 ]; then

				ex_rtl_log_env_vars "build"		\

					$(set | awk -F= '/^PKG_/{print $1}' | sort);

			fi;

			if [ "${ARG_VERBOSE:-0}" -ge 3 ]; then

				set -o xtrace;

			fi; ;;

	exec_step)	ex_rtl_log_msg info "Finished build step ${4} of package \`${_pkg_name}'."; ;;

	esac; return 0;

};

for __ in $(find subr -name *.subr); do

	. "${__}"; done; buildp_dispatch start_build "${@}";

# vim:filetype=sh