#!/usr/bin/with-contenv bash
# shellcheck shell=bash disable=SC2016

# /usr/local/bin/readsb --net-bind-address=0.0.0.0 --quiet --write-output=/run/readsb --forward-mlat --gain=-10 --net --net-bo-port=30105 --net-connector=tar1090,30003,beast_in --net-connector=piaware,30105,beast_in --net-connector=rbfeeder,30105,beast_in --net-connector=radarvirtuel,30105,beast_in --net-connector=multifeeder,39000,beast_in --net-connector=multifeeder,39001,beast_in --net-connector=multifeeder,39002,beast_in --net-connector=multifeeder,39003,beast_in --net-connector=multifeeder,39004,beast_in --net-only --net-ro-port=30002 --net-sbs-port=30003

if [[ -z "${MLAT_CONFIG}" ]]
then
    echo "[$(date)][mlathub] No MLAT servers have been defined in MLAT_CONFIG - no need to start MLATHUB"
    sleep infinity
fi

if [[ -n "${MLATHUB_DISABLED}" ]]
then
    echo "[$(date)][mlathub] MLATHUB is disabled."
    sleep infinity
fi

# Build the readsb command line based on options
MLATHUB_BIN="/usr/local/bin/readsb"

MLATHUB_CMD=("--net")
MLATHUB_CMD+=("--quiet")
MLATHUB_CMD+=("--net-only")
MLATHUB_CMD+=("--mlat")
MLATHUB_CMD+=("--forward-mlat")

MLATHUB_CMD+=("--net-bo-port=${MLATHUB_BEAST_OUT_PORT:-39105}")
MLATHUB_CMD+=("--net-sbs-port=${MLATHUB_SBS_OUTPUT_PORT:-39003}")

# We need to get the mlat results ports from the parameters:
# parse MLAT_CONFIG string into mlat_configs array
readarray -td ";" mlat_configs < <(printf '%s' "${MLAT_CONFIG// /}")

# Now loop through the MLAT_CONFIG items and start up an Mlat_client for each of them:
mlat_result_sources=0
for instance in "${mlat_configs[@]}"
do
    # shellcheck disable=SC2015
    [[ -z "${instance}" ]] && continue || true
    # put individual params into the $params array:
    readarray -td "," params < <(printf '%s' "${instance}")

    if [[ -n "${params[2]}" ]]
    then
        MLATHUB_CMD+=("--net-connector=localhost,${params[2]},beast_in")
        (( mlat_result_sources++ ))
    fi
done
if ((mlat_result_sources == 0 ))
then
    echo "[$(date)][mlathub] No MLAT servers have been defined in MLAT_CONFIG - no need to start MLATHUB"
    sleep infinity
fi

# Add any additional net_connectors:
if [[ -n "$MLATHUB_NET_CONNECTOR" ]]; then
    IFS=';' read -r -a MLATHUB_NET_CONNECTOR_ARRAY <<< "$MLATHUB_NET_CONNECTOR"
    for NET_CONNECTOR_ELEMENT in "${MLATHUB_NET_CONNECTOR_ARRAY[@]}"
    do
        MLATHUB_CMD+=("--net-connector=${NET_CONNECTOR_ELEMENT// /}")
    done
fi

if [ -n "${READSB_DEBUG}" ]; then
    MLATHUB_CMD+=("--debug=$READSB_DEBUG")
fi

if [ -n "${LAT}" ]; then
    MLATHUB_CMD+=(--lat "${LAT}")
elif [ -n "${READSB_LAT}" ]; then
    MLATHUB_CMD+=(--lat "${READSB_LAT}")
fi

if [ -n "${LONG}" ]; then
    MLATHUB_CMD+=(--lon "${LONG}")
elif [ -n "${READSB_LON}" ]; then
    MLATHUB_CMD+=(--lon "${READSB_LON}")
fi

# Handle "--max-range=<dist>"
if [[ -n "$READSB_MAX_RANGE" ]]; then
    MLATHUB_CMD+=("--max-range=$READSB_MAX_RANGE")
fi

# Handle "--net-connector-delay=<seconds>"
if [[ -n "$READSB_NET_CONNECTOR_DELAY" ]]; then
    MLATHUB_CMD+=("--net-connector-delay=$READSB_NET_CONNECTOR_DELAY")
fi

# Handle "--net-heartbeat=<rate>"
if [[ -n "$READSB_NET_HEARTBEAT" ]]; then
    MLATHUB_CMD+=("--net-heartbeat=$READSB_NET_HEARTBEAT")
fi

echo "[$(date)][mlathub] Starting MLATHUB with this command line: ${MLATHUB_BIN} ${MLATHUB_CMD[*]} $MLATHUB_EXTRA_ARGS"

# shellcheck disable=SC2086
"${MLATHUB_BIN}" "${MLATHUB_CMD[@]}" $MLATHUB_EXTRA_ARGS 2>&1 | \
	mawk -W Interactive '{print "[" strftime("%Y/%m/%d %H:%M:%S", systime()) "][mlathub] " $0}'