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#!/bin/sh

#  generic update scripts for updating configs and such
#
#	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>
#
#    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)"
./resources/scripts/misc/versioncheck

update=./resources/scripts/update

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

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

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

	possible values for 'mode':
	$(listmodes)

	Example:	./update coreboot configs
	Example:	./update coreboot configs x60

	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 './update help'."
fi

mode="${1}"

[ "${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
    			"${update}"/"${mode}"/"${option}" $@
    		done
    		;;
    	*)
    		if [ -d "${update}"/"${mode}"/ ]; then
    			if [ -f "${update}"/"${mode}"/"${option}" ]; then
    				"${update}"/"${mode}"/"${option}" $@
    			else
                    help
    				die "Invalid option for '${mode}'. See './update ${mode} list'."
    			fi
    		else
                help
    			die "Invalid mode '${mode}'. See './update help'."
    		fi
    esac
else
    help
    exit 0
fi