#!/bin/sh
# Copyright (C) 2022-2023 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.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 <https://www.gnu.org/licenses/>.

# For compatibility with sysexits.h (see man 3 sysexits.h for more details)
EX_USAGE=64

lbwww_uri="https://git.sr.ht/~libreboot/lbwww"
lbwww_path=""

untitled_uri="https://git.sr.ht/~libreboot/untitled"
untitled_path=""

help()
{
	echo "Usage: $0 [options]"
	echo ""
	echo "Available options:"
	echo -e "\t-h, --help"
	echo -e "\t\tDisplay this help and exit."
	echo -e "\t--with-lbwww-path PATH"
	echo -e "\t\tUse a local lbwww directory from PATH\n" \
	     "\t\tinstead of downloading the latest version from\n" \
	     "\t\t${lbwww_uri}"
	echo -e "\t--with-untitled-path PATH"
	echo -e "\t\tUse a local untitled directory from PATH\n" \
	     "\t\tinstead of downloading the latest version from\n" \
	     "\t\t${untitled_uri}"
}

sync_repo()
{
	dst_path="$1"
	src_uri="$2"
	src_path="$3"
	src_revision="$4"

	if [ -z "${src_path}" ] && [ ! -d "${dst_path}" ] ; then
		git clone "${src_uri}" "${dst_path}"
		git -C "${dst_path}" checkout "${src_revision}"
	elif [ ! -d "${dst_path}" ] ; then
		mkdir -p "$(dirname ${dst_path})"
		cp -a "${src_path}" "${dst_path}"
		if [ -n "${src_revision}" ] ; then
			git -C "${dst_path}" checkout "${src_revision}"
		fi
	elif [ -z "${src_path}" ] ; then
		git -C "${dst_path}" remote get-url origin || \
		    git -C "${dst_path}" remote add origin "${src_uri}"
		git -C "${dst_path}" remote set-url origin "${src_uri}"
		git -C "${dst_path}" clean -dfx
		git -C "${dst_path}" pull --rebase
	else
		rm -rf "${dst_path}"
		cp -a "${src_path}" "${dst_path}"
		if [ -n "${src_revision}" ] ; then
			git -C "${dst_path}" checkout "${src_revision}"
		fi
	fi
}

help_missing_arg()
{
	printf "Error: Argument of %s is missing.\n\n" "$1"
	help
}

i=1
while [ $i -le $# ] ; do
	opt="$(eval echo \$$i)"

	case "${opt}" in
		-h|--help)
			help
			exit 0
			;;
		--with-lbwww-path)
			if [ $i -ge $# ] ; then
				help_missing_arg "--with-lbwww-path"
				exit ${EX_USAGE}
			fi
			lbwww_path="$(eval echo \$$(expr $i + 1))"
			i="$(expr $i + 1)"
			;;
		--with-untitled-path)
			if [ $i -ge $# ] ; then
				help_missing_arg "--with-untitled-path"
				exit ${EX_USAGE}
			fi
			untitled_path="$(eval echo \$$(expr $i + 1))"
			i="$(expr $i + 1)"
			;;
		*)
			help
			exit ${EX_USAGE}
			;;
	esac

	i="$(expr $i + 1)"
done

set -e

sync_repo "untitled" "${untitled_uri}" "${untitled_path}"
sync_repo "untitled/www/lbwww" "${lbwww_uri}" "${lbwww_path}"

cd untitled
./build sites lbwww