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#!/bin/sh

#  generic build script, for building components (all of them)
#
#	Copyright (C) 2014, 2015, 2020, 2021 Leah Rowe <info@minifree.org>
#	Copyright (C) 2015 Patrick "P. J." McDermott <pj@pehjota.net>
#	Copyright (C) 2015, 2016 Klemens Nanni <contact@autoboot.org>
#	Copyright (C) 2022, Caleb La Grange <thonkpeasant@protonmail.com>
#
#	This program is free software: you can redistribute it and/or modify
#	it under the terms of the GNU General Public License as published by
#	the Free Software Foundation, either version 3 of the License, or
#	(at your option) any later version.
#
#	This program is distributed in the hope that it will be useful,
#	but WITHOUT ANY WARRANTY; without even the implied warranty of
#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#	GNU General Public License for more details.
#
#	You should have received a copy of the GNU General Public License
#	along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
./.gitcheck

[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e

projectname="$(cat projectname)"

build=./resources/scripts/build

listmodes() {
	for mode in "${build}"/*; do
		printf '%s\n' "${mode##*/}"
	done
}

# Takes exactly one mode as parameter
listoptions() {
	for option in "${build}"/"${1}"/*; do
		printf '%s\n' "${option##*/}"
	done
}

help() {
	cat <<- EOF
	USAGE:	./build <MODE> <OPTION>

	possible values for 'mode':
	$(listmodes)

	Example:	./build module all
	Example:	./build module flashrom [static]
	Example:	./build roms withgrub
	Example:	./build clean all

	Refer to the ${projectname} documentation for more information.
	EOF
}

die() {
	printf 'Error: %s\n' "${@}" 1>&2
	exit 1
}

if [ $# -lt 1 ]; then
	die "Wrong number of arguments specified. See './build help'."
fi

mode="${1}"

if [ "${mode}" != "dependencies" ]; then
	./resources/scripts/misc/versioncheck
fi

[ "${mode}" = help ] && help && exit 0

if [ $# -gt 1 ]; then

	option="${2}"
	shift 2

	case "${option}" in
		list)
			printf "Available options for mode '%s':\n\n" "${mode}"
			listoptions "${mode}"
			;;  
		all)
			for option in $(listoptions "${mode}"); do
				"${build}"/"${mode}"/"${option}" $@
			done
			;;
		*)
			if [ -d "${build}"/"${mode}"/ ]; then
				if [ -f "${build}"/"${mode}"/"${option}" ]; then
					"${build}"/"${mode}"/"${option}" $@
				else
					help
					die "Invalid option for '${mode}'. See './build ${mode} list'."
				fi
			else
				help
				die "Invalid mode '${mode}'. See './build help'."
			fi
	esac
else
	help
	exit 0
fi

./.gitcheck clean