#!/usr/bin/env bash
#
#   Copyright (C) 2015, 2016, 2021 Leah Rowe <info@minifree.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

usage()
{
	progname="./download seabios"
	printf "Usage:\n"
	printf "\t%s         # %s\n" \
	       "${progname}" \
	       "Download SeaBIOS"
	printf "\t%s --help  # %s\n" \
	       "${progname}" \
	       "Prints this help"
}

if [ $# -ne 0 ] ; then
	usage
	exit 0
fi

# Get SeaBIOS, revert to commit last used and apply patches.

# Remove the old version that may still exist
# ------------------------------------------------------------------------------

printf "Downloading SeaBIOS\n"

rm -f build_error

rm -rf "seabios/"

# Get latest SeaBIOS
# ------------------------------------------------------------------------------

# download it using git
git clone https://review.coreboot.org/seabios || git clone https://github.com/coreboot/seabios

if [ ! -d "seabios" ]; then
	printf "seabios not downloaded; check network connection?\n\n"
	exit 1
fi

(
# modifications are required
cd "seabios/"

# Reset to the last commit that was tested (we use stable releases for seabios)
# ------------------------------------------------------------------------------

git reset --hard 64f37cc530f144e53c190c9e8209a51b58fd5c43

for patchfile in ../resources/seabios/patches/*.patch; do
	if [ ! -f "${patchfile}" ]; then continue; fi
	git am "${patchfile}" || touch ../build_error
	if [ -f ../build_error ]; then
		git am --abort
		break
	fi
done
)

if [ -f build_error ]; then
	rm -f build_error
	exit 1
fi

exit 0