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#!/usr/bin/env sh
# SPDX-License-Identifier: GPL-3.0-or-later
# SPDX-FileCopyrightText: 2014,2015,2020,2021,2023 Leah Rowe <leah@libreboot.org>
# SPDX-FileCopyrightText: 2015 Patrick "P. J." McDermott <pj@pehjota.net>
# SPDX-FileCopyrightText: 2015, 2016 Klemens Nanni <contact@autoboot.org>
# SPDX-FileCopyrightText: 2022, Caleb La Grange <thonkpeasant@protonmail.com>

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

. "include/err.sh"
. "include/export.sh"

read projectname < projectname
linkpath="${0}"
linkname="${linkpath##*/}"
buildpath="./script/${linkname}"
mode=""
option=""

main()
{
	id -u 1>/dev/null 2>/dev/null || \
	    fail "cannot ascertain user id"

	initialise_command $@
	shift 2

	./checkgit || fail "Please read: https://libreboot.org/docs/build/"
	./checkversion || fail "Cannot check ${projectname} version"

	execute_command $@
	lbmk_exit 0
}

initialise_command()
{
	[ "${linkname}" = "lbmk" ] && fail "Don't run this script directly."
	[ $# -lt 1 ] && fail "Too few arguments. Try: ${0} help"

	mode="${1}"
	[ "${mode}" != "dependencies" ] || \
		install_packages $@ || fail "Can't install dependencies"
	[ "$(id -u)" != "0" ] || \
		fail "running this command as root is not permitted"

	[ "${mode}" = "help" ] && usage ${0} && lbmk_exit 0
	[ "${mode}" = "list" ] && ./build command options "${buildpath}" && \
	    lbmk_exit 0
	[ $# -lt 2 ] && usage ${0} && lbmk_exit 1

	option="${2}"
}

install_packages()
{
	if [ $# -lt 2 ]; then
		printf "You must specify a distro, namely:\n" 1>&2
		printf "Look at files under config/dependencies/\n" \
		    1>&2
		printf "Example: ./build dependencies debian\n" 1>&2
		fail "install_packages: target not specified"
	fi

	[ -f "config/dependencies/${2}" ] || fail "Unsupported target"

	aur_notice=""
	. "config/dependencies/${2}"

	${pkg_add} ${pkglist} || \
	    fail "install_packages: Error installing dependencies"
	[ "${aur_notice}" = "" ] || \
	    printf "You must install AUR packages: %s\n" "${aur_notice}" 1>&2

	lbmk_exit 0
}

execute_command()
{
	if [ "${option}" = "list" ]; then
		./build command options "${buildpath}/${mode}" || \
		    fail "execute_command: cannot list command options"
		lbmk_exit 0
	fi
	[ -f "${buildpath}/${mode}/${option}" ] || \
		fail "Invalid command. Run: ${linkpath} help"
	"${buildpath}/${mode}/${option}" $@ || \
	    fail "execute_command: ${buildpath}/${mode}/${option} ${@}"
}

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

	possible values for 'mode':
	$(./build command options "${buildpath}")

	For each of the above modes, you may also do:
	${progname} <MODE> list

	Example: ./build grub list, which would yield:
	$(./build grub list)

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

lbmk_exit()
{
	tmp_cleanup || \
	    err "lbmk_exit: could not remove tmpdir upon exit $1: ${tmpdir}"
	exit $1
}

fail()
{
	tmp_cleanup || printf "fail(): WARNING: cannot remove tmpdir: %s\n" \
	    "${tmpdir}" 1>&2
	err "${1}"
}

tmp_cleanup()
{
	if [ "${tmpdir_was_set}" = "n" ]; then
		rm -Rf "${tmpdir}" || return 1
	fi
}

main $@