#!/bin/bash

# important: not to echo or print anything on stdout, will be taken into ovs-ctl

set -e

export OVS_LOGDIR=${SNAP_COMMON}/log/openvswitch
export OVS_RUNDIR=${SNAP_COMMON}/run/openvswitch
export OVS_SYSCONFDIR=${SNAP_COMMON}/etc
export OVS_PKGDATADIR=${SNAP}/openvswitch-dpdk/share/openvswitch

if [ "$(snapctl get config.network.ovs-dpdk)" == "false" ]; then
    export OVS_BINDIR=${SNAP}/openvswitch/bin
    export OVS_SBINDIR=${SNAP}/openvswitch/sbin
    export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${SNAP}/openvswitch/lib:${SNAP}/openvswitch/usr/lib/${SNAPCRAFT_ARCH_TRIPLET}"
else
    export OVS_BINDIR=${SNAP}/openvswitch-dpdk/bin
    export OVS_SBINDIR=${SNAP}/openvswitch-dpdk/sbin
    export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${SNAP}/openvswitch-dpdk/lib:${SNAP}/openvswitch-dpdk/usr/lib/${SNAPCRAFT_ARCH_TRIPLET}"
fi

mkdir -p ${OVS_LOGDIR}
mkdir -p ${OVS_RUNDIR}
mkdir -p ${OVS_SYSCONFDIR}/openvswitch

# need to maintain ovsdb-server and ovs-vswtichd unix socket path:
shopt -s nullglob
for ctl in $OVS_RUNDIR/*.real.*.ctl;
do
    ln -fs $ctl "${ctl//.real/}"
done
# needs further testing: vvv
#echo "find $OVS_RUNDIR/*.ctl -xtype l -delete"
shopt -u nullglob

if [[ "$0" == *"ovs-wrapper"* ]]; then
  cmd=$(command -v ${1})
  exec ${cmd%/*}/real/${cmd##*/} "${@:2}"
else
  # command is symlink to this script
  exec "${0%/*}/real/${0##*/}" "${@}"
fi