#!/bin/bash
set -eu

BASE=$(dirname $0)/../
BRIDGE_SUFFIX=${1:-''}
BRIDGE_NAME=brbm$BRIDGE_SUFFIX

# Only add bridge if missing
(sudo ovs-vsctl list-br | grep ${BRIDGE_NAME}$) || sudo ovs-vsctl add-br ${BRIDGE_NAME}

# remove bridge before replacing it.
(virsh net-list --persistent | grep "${BRIDGE_NAME} ") && virsh net-destroy ${BRIDGE_NAME}
(virsh net-list --inactive --persistent | grep "${BRIDGE_NAME} ") && virsh net-undefine ${BRIDGE_NAME}

virsh net-define <(sed s/brbm/$BRIDGE_NAME/ $BASE/templates/brbm.xml)
virsh net-autostart ${BRIDGE_NAME}
virsh net-start ${BRIDGE_NAME}

# start default if needed and configure it to autostart
default_net=$(sudo virsh net-list --all --persistent | grep default | awk 'BEGIN{OFS=":";} {print $2,$3}')
state=${default_net%%:*}
autostart=${default_net##*:}

if [ "$state" != "active" ]; then
  virsh net-start default
fi

if [ "$autostart" != "yes" ]; then
  virsh net-autostart default
fi