#!/usr/bin/env bash

#  generic scripts for modifying configs and such
#
#	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>
#
#	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)"
modify=./resources/scripts/modify
mode=""
option=""

main()
{
	./resources/scripts/misc/versioncheck

	if [ $# -lt 1 ]; then
		die "Wrong argument count. See './modify help'."
	fi
	mode="${1}"

	if [ "${mode}" = help ]; then
		help
		exit 0
	elif [ $# -lt 2 ]; then
		help
		exit 0
	fi

	option=${2}
	shift 2

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

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

	possible values for 'mode':
	$(listitems "${modify}")

	Example:	./modify coreboot configs
	Example:	./modify coreboot configs x60

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

listitems()
{
	for x in "${1}/"*; do
		[ ! -f "${x}" ] && continue
		printf "%s\n" ${x##*/}
	done
}

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

main $@