#!/bin/sh

# Copyright (c) 2016, 2017, 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>

#

buildp_ast() {

	trap '' HUP INT TERM USR1 USR2;

	local _param="${1}" _pids="" _pids_niter=0 _pkg_name="" RTL_KILL_TREE_PIDS="";

	if [ "${_param}" = "abort" ]; then

		rtl_log_msg fatalexit "Build aborted.";

	fi;

	while [ "${_pids_niter}" -lt 8 ]; do

		_pids="$(rtl_lconcat "${_pids}" "${RTL_KILL_TREE_PIDS}")"; RTL_KILL_TREE_PIDS="";

		if ! rtl_kill_tree "${$}" "TERM"\

		|| [ -z "${RTL_KILL_TREE_PIDS}" ]; then

			break;

		else

			: $((_pids_niter+=1));

		fi;

	done;

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

		rtl_log_msg notice "Killed PID(s): %s" "$(rtl_uniq ${_pids})";

	fi;

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

		for _pkg_name in ${EX_PKG_DISPATCH_WAIT}; do

			rtl_state_clear "${BUILD_WORKDIR}" "${_pkg_name}";

		done;

		rtl_log_msg notice "Reset package state for: %s" "${EX_PKG_DISPATCH_WAIT}";

	fi;

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

		rtl_fileop rm "${DEFAULT_BUILD_STATUS_IN_PROGRESS_FNAME}";

	fi;

};

buildp_dispatch_fail_pkg() {

	local _group_name="${1}" _pkg_name="${2}";

	: $((BUILD_NFAIL+=1)); BUILD_PKGS_FAILED="$(rtl_lconcat "${BUILD_PKGS_FAILED}" "${_pkg_name}")";

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

		rtl_log_msg fatal "${BUILD_WORKDIR}/${_pkg_name}_stderrout.log:";

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

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

			printf "%s" "${_pkg_name}" > "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}";

		fi;

		rtl_log_msg fatal "Build failed in \`%s', check \`%s' for details." "${_pkg_name}" "${BUILD_WORKDIR}/${_pkg_name}_stderrout.log";

	else	rtl_log_msg warning "Build failed in \`%s', check \`%s' for details." "${_pkg_name}" "${BUILD_WORKDIR}/${_pkg_name}_stderrout.log";

	fi;

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

		rtl_log_msg info "Logged environment dump for failed package \`%s' to \`%s'." "${_pkg_name}" "${BUILD_WORKDIR}/${_pkg_name}.dump";

		rtl_log_msg info "Enter an interactive package build shell w/ the command line: ./pkgtool.sh -a %s -b %s \"%s\" PREFIX=\"%s\""\

				"${ARCH}" "${BUILD_KIND}" "${_pkg_name}" "${PREFIX}";

	fi;

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

		exit 1;

	fi;

};

buildp_dispatch_group_state() {

	local _msg="${1}" _group_name="${2}";

	case "${_msg}" in

	finish_group)	rtl_log_msg success_end "Finished \`%s' build group." "${_group_name}"; ;;

	start_group)	rtl_log_msg success "Starting \`%s' build group..." "${_group_name}"; ;;

	esac;

};

buildp_dispatch_pkg_state() {

	local _msg="${1}" _group_name="${2}" _pkg_name="${3}";

	case "${_msg}" in

	disabled_pkg)	: $((BUILD_NSKIP+=1)); rtl_log_msg verbose "Skipping disabled package \`%s'." "${_pkg_name}"; ;;

	missing_pkg)	rtl_log_msg fatalexit "Error: unknown package \`%s'." "${_pkg_name}"; ;;

	msg_pkg)	shift 3; rtl_log_msg verbose "%s/%s: %s" "${_group_name}" "${_pkg_name}" "${*}"; ;;

	skipped_pkg)	: $((BUILD_NSKIP+=1)); rtl_log_msg verbose "Skipping finished package \`%s'." "${_pkg_name}"; ;;

	start_pkg)	rtl_log_msg info "[% 3d%%] [%03d/%03d] Starting \`%s' build..." "$(((100*${4} + ${5}/2)/${5}))" "${4}" "${5}" "${_pkg_name}"; ;;

	step_pkg)	rtl_log_msg verbose "Finished build step %s of package \`%s'." "${4}" "${_pkg_name}"; ;;

	finish_pkg)

		: $((BUILD_NFINI+=1));

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

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

		fi;

		rtl_log_msg info_end "Finished \`%s' build." "${_pkg_name}"; ;;

	start_pkg_child)

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

			rtl_log_env_vars "build" $(rtl_get_vars_fast "^PKG_");

		fi;

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

			set -o xtrace;

		fi; ;;

	esac;

};

buildp_dispatch() {

	local _msg="${1}"; shift;

	case "${_msg}" in

	disabled_pkg|finish_pkg|missing_pkg|msg_pkg|skipped_pkg|start_pkg|start_pkg_child|step_pkg)

		buildp_dispatch_pkg_state "${_msg}" "${@}"; ;;

	finish_group|start_group)

		buildp_dispatch_group_state "${_msg}" "${@}"; ;;

	*)	if command -v "buildp_dispatch_${_msg}" >/dev/null 2>&1; then

			"buildp_dispatch_${_msg}" "${@}";

		fi; ;;

	esac;

};

buildp_time_init() {

	BUILD_DATE_START="$(rtl_date %Y-%m-%d-%H-%M-%S)";

	_build_time_secs="$(rtl_date %s)";

};

buildp_time_update() {

	: $((_build_time_secs=$(rtl_date %s)-${_build_time_secs}));

	: $((_build_time_hours=${_build_time_secs}/3600));

	: $((_build_time_minutes=(${_build_time_secs}%3600)/60));

	: $((_build_time_secs=(${_build_time_secs}%3600)%60));

};

build() {

	local	_build_time_hours=0 _build_time_mins=0 _build_time_secs=0 _pkg_name="" _rc=0 _status=""			\

		BUILD_DATE_START="" BUILD_GROUPS="" BUILD_GROUPS_INHIBIT_DEPS=0 BUILD_HNAME="" BUILD_IS_PARENT=1	\

		BUILD_NFAIL=0 BUILD_NFINI=0 BUILD_NSKIP=0 BUILD_PKGS_FAILED="" BUILD_TARGET="" BUILD_USER=""		\

		DEFAULT_BUILD_CPUS=1 DEFAULT_BUILD_LAST_FAILED_PKG_FNAME="" DEFAULT_BUILD_LOG_FNAME=""			\

		DEFAULT_BUILD_STEPS="" DEFAULT_BUILD_VARS="" DEFAULT_CLEAR_PREFIX_PATHS="" DEFAULT_GIT_ARGS=""		\

		DEFAULT_GITROOT_HEAD="" DEFAULT_LOG_ENV_VARS=""	DEFAULT_TARGET="" DEFAULT_WGET_ARGS=""			\

		MIDIPIX_BUILD_PWD=""; DEFAULT_BUILD_STATUS_IN_PROGRESS_FNAME="";

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

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

	elif ! build_init "${@}"; then

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

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

		_rc=0; _status="${_status}";

	else	trap "buildp_ast exit" EXIT; trap "buildp_ast abort" HUP INT TERM USR1 USR2;

		buildp_time_init;

		rtl_log_msg info "Build started by %s@%s at %s." "${BUILD_USER}" "${BUILD_HNAME}" "${BUILD_DATE_START}";

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

		ex_pkg_dispatch "${DEFAULT_BUILD_STEPS}" "${DEFAULT_BUILD_VARS}"			\

				buildp_dispatch "${BUILD_GROUPS}" "${BUILD_GROUPS_INHIBIT_DEPS}"	\

				"${ARG_PARALLEL}" "${BUILD_WORKDIR}/build.fifo" "${ARG_RESTART}"	\

				"${ARG_RESTART_AT}" "${ARG_RESTART_RECURSIVE}" "${BUILD_WORKDIR}";

		buildp_time_update;

		rtl_log_msg info "%s finished, %s skipped, and %s failed package(s)." "${BUILD_NFINI:-0}" "${BUILD_NSKIP:-0}" "${BUILD_NFAIL:-0}";

		rtl_log_msg info "Build time: %s hour(s), %s minute(s), and %s second(s)." "${_build_time_hours:-0}" "${_build_time_minutes:-0}" "${_build_time_secs:-0}";

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

			_rc=1; _status="Build script failure(s) in: ${BUILD_PKGS_FAILED}.";

		fi;

	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; build "${@}";

# vim:filetype=sh textwidth=0