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#!/usr/bin/env sh

#  generic script for calling other scripts in lbmk
#
#	Copyright (C) 2014,2015,2020,2021,2023 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/>.
#

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

projectname="$(cat projectname)"
buildpath=""
mode=""
option=""

main()
{
	if [ "${0##*/}" = "lbmk" ]; then
		die "Do not run the lbmk script directly!"
	elif [ "${0##*/}" = "download" ]; then
		./update module $@ || exit 1
		exit 0
	elif [ "${0##*/}" = "blobutil" ]; then
		./update blobs $@ || exit 1
		exit 0
	elif [ $# -lt 1 ]; then
		die "Too few arguments. Try: ${0} help"
	fi

	buildpath="./resources/scripts/${0##*/}"

	mode="${1}"
	./.gitcheck
	if [ "${mode}" != "dependencies" ]; then
		./resources/scripts/misc/versioncheck
	fi
	if [ "${mode}" = help ]; then
		usage $0
		exit 0
	elif [ $# -lt 2 ]; then
		usage $0
		exit 0
	fi

	option="${2}"
	shift 2

	case "${option}" in
	list)
		printf "Options for mode '%s':\n\n" ${mode}
		listoptions "${mode}"
		;;
	all)
		for option in $(listoptions "${mode}"); do
			"${buildpath}/${mode}/${option}" $@
		done
		;;
	*)
		if [ ! -d "${buildpath}/${mode}" ]; then
			usage $0
			die "Invalid mode '${mode}'. Run: ${0} help"
		elif [ ! -f "${buildpath}/${mode}/${option}" ]; then
			usage $0
			printf "Invalid option for '%s'." ${mode}
			die "Run: ${0} ${mode} list'."
		fi
		"${buildpath}/${mode}/${option}" $@
	esac

	./.gitcheck clean
}

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

usage()
{
	progname=${0}
	cat <<- EOF
	USAGE:	${progname} <MODE> <OPTION>

	possible values for 'mode':
	$(listmodes)

	Example:	${progname} module all
	Example:	${progname} module flashrom [static]
	Example:	${progname} roms withgrub
	Example:	${progname} clean all

	Refer to ${projectname} documentation for more info.
	EOF
}

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

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

main $@