# "installer-pc" command
#
# Copyright (C) 2014  Patrick "P. J." McDermott
#
# This file is part of the ProteanOS Development Kit.
#
# The ProteanOS Development Kit 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.
#
# The ProteanOS Development Kit 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 the ProteanOS Development Kit.  If not, see
# <http://www.gnu.org/licenses/>.

use getopt
use profile
use block
use install
use session

cmd_installer_pc_optstring='a:p:m:'

cmd_installer_pc_main()
{
	local suite=
	local dev=
	local profile=
	local root=
	local b4=
	local b3=
	local b2=
	local b1=

	if ! get_options "${@}"; then
		print_cmd_usage 'installer-pc' >&2
		exit 1
	fi
	shift $(($OPTIND - 1))

	if [ ${#} -ne 2 ]; then
		print_cmd_usage 'installer-pc' >&2
		exit 1
	fi

	suite="${1}"
	dev="${2}"
	check_block "${dev}"

	if [ "x${suite%%:*}" != "x${suite}" ]; then
		profile="${suite%%:*}"
		suite="${suite#*:}"
	else
		profile='proteanos'
	fi
	profile_set "${profile}"
	suite="$(profile_normalize_suite "${suite}")"

	cmd_installer_pc_make_partition_and_fs "${dev}"
	root="$(block_mount "${dev}1")"

	install_system "${cmd_installer_pc_opt_m-}" "${suite}" \
		"${cmd_installer_pc_opt_a-}" "${cmd_installer_pc_opt_p-}" \
		"${root}" false

	if [ -f "${root}/sbin/lilo" ]; then
		read b4 b3 b2 b1 <<-EOF
			$(od -An -tx1 -v -j 440 -N 4 "${dev}")
			EOF
		# This ln command won't be needed once lilo 24.1-1 is uploaded.
		ln "${root}/boot/vmlinuz" "${root}/boot/vmlinuz.old"
		session_begin "${root}" . : false
		session_exec install-lilo \
			"${dev}" "PARTUUID=${b1}${b2}${b3}${b4}-01"
		session_end
	fi

	block_umount "${root}"
}

cmd_installer_pc_make_partition_and_fs()
{
	local dev="${1}"

	dd if=/dev/zero of="${dev}" bs=512 count=1
	printf 'n\np\n1\n\n\nt\n83\na\n1\nw\n' | fdisk "${dev}"
	mke2fs -t ext4 "${dev}1"
}