#!/bin/sh

#-
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright 2023 Beckhoff Automation GmbH & Co. KG
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted providing that the following conditions 
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

: ${LIBEXEC_PATH:="/usr/libexec/fwget"}

usage()
{
	cat <<EOF
Usage: `basename $0` [options] [subsystem]

Supported subsystems
  pci

Options:
  -n		-- Do not install package, only print the results
  -v		-- More verbose
EOF
	exit 1
}

log_start()
{
	exec 3>&1 4>&2
}

log()
{
	echo $@ 1>&3
}

log_verbose()
{
	if [ "${VERBOSE}" = "n" ]; then
		return
	fi

	echo $@ 1>&3
}

DRY_RUN=n
VERBOSE=n

log_start

while [ $# -gt 0 ]; do
	case $1 in
		-n)
			DRY_RUN=y
			;;
		-v)
			VERBOSE=y
			;;
		*)
			subsystems="${subsystems} $1"
			;;
	esac
	shift
done

# Default searching PCI subsystem
if [ -z "${subsystems}" ]; then
	subsystems="pci"
fi

# Fail early on unsupported subsystem
for subsystem in ${subsystems}; do
	if [ ! -f ${LIBEXEC_PATH}/${subsystem} ]; then
		usage
	fi
	. ${LIBEXEC_PATH}/${subsystem}
done

packages=""
for subsystem in ${subsystems}; do
	package=$(${subsystem}_search_packages)
	
	packages="${packages} ${package}"
done

echo "Needed packages: ${packages}"
if [ "${DRY_RUN}" = "y" ]; then
	exit 0
fi

pkg install -q ${package}