#!/bin/sh -e
#
# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
#
# This file is part of cdist.
#
# cdist 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.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#


os=$(cat "${__global:?}/explorer/os")

case "$os" in
	"alpine"|"debian"|"ubuntu")
		confdir="/etc/bird.d"
	;;
	*)
		printf "Your operating system (%s) is currently not supported by __bird_bgp\n" "$os" >&2
		printf "Please contribute an implementation for it if you can.\n" >&2
		exit 1
	;;
esac

# Required parameters
local_as="$(cat "${__object:?}"/parameter/local-as)"
export local_as

neighbor_as="$(cat "${__object:?}"/parameter/neighbor-as)"
export neighbor_as

neighbor_ip="$(cat "${__object:?}"/parameter/neighbor-ip)"
export neighbor_ip

# Optional parameters
description=
if [ -f "${__object:?}"/parameter/description ];
then
	description="$(cat "${__object:?}"/parameter/description)"
fi
export description

direct=
if [ -f "${__object:?}"/parameter/direct ];
then
	direct="true"
fi
export direct

ipv4_extended_next_hop=
if [ -f "${__object:?}"/parameter/ipv4-extended-next-hop ];
then
	ipv4_extended_next_hop="true"
fi
export ipv4_extended_next_hop

ipv6_extended_next_hop=
if [ -f "${__object:?}"/parameter/ipv6-extended-next-hop ];
then
	ipv6_extended_next_hop="true"
fi
export ipv6_extended_next_hop

local_ip=
if [ -f "${__object:?}"/parameter/local-ip ];
then
	local_ip="$(cat "${__object:?}"/parameter/local-ip)"
fi
export local_ip

password=
if [ -f "${__object:?}"/parameter/password ];
then
	password="$(cat "${__object:?}"/parameter/password)"
fi
export password

ipv4_import=
if [ -f "${__object:?}"/parameter/ipv4-import ];
then
	ipv4_import="$(cat "${__object:?}"/parameter/ipv4-import)"
fi
export ipv4_import

ipv4_export=
if [ -f "${__object:?}"/parameter/ipv4-export ];
then
	ipv4_export="$(cat "${__object:?}"/parameter/ipv4-export)"
fi
export ipv4_export

ipv6_import=
if [ -f "${__object:?}"/parameter/ipv6-import ];
then
	ipv6_import="$(cat "${__object:?}"/parameter/ipv6-import)"
fi
export ipv6_import

ipv6_export=
if [ -f "${__object:?}"/parameter/ipv6-export ];
then
	ipv6_export="$(cat "${__object:?}"/parameter/ipv6-export)"
fi
export ipv6_export

# Run template
"${__type:?}"/files/template.sh > "${__files:?}/bgp-${__object_id:?}.conf"

# Install resulting configuration
__file "${confdir:?}"/bgp-"${__object_id:?}".conf \
	--mode 0640 --owner root --group bird \
	--source "${__files:?}/bgp-${__object_id:?}.conf"