#!/bin/sh
set -eu

SVXREFLECTOR_CONF="${SVXREFLECTOR_CONF:-/etc/svxlink/svxreflector.conf}"
SVXREFLECTOR_LINK_CONF="${SVXREFLECTOR_LINK_CONF:-/etc/svxlink/svxreflector.link.conf}"
SVXREFLECTOR_ARGS="${SVXREFLECTOR_ARGS:-}"
ENABLE_FM_LINK="${ENABLE_FM_LINK:-0}"
RUNTIME_CONF="/tmp/svxreflector.runtime.conf"

pids=""

log() {
  echo "[$(date -Iseconds)] $*"
}

die() {
  log "ERROR: $*"
  exit 1
}

start_bg() {
  name="$1"
  shift
  log "Starting: $name -> $*"
  "$@" &
  pid="$!"
  pids="$pids $pid"
  log "$name started (pid=$pid)"
}

stop_all() {
  log "Stop requested; stopping: $pids"
  for pid in $pids; do
    kill -TERM "$pid" 2>/dev/null || true
  done

  i=0
  while [ $i -lt 10 ]; do
    alive=0
    for pid in $pids; do
      if kill -0 "$pid" 2>/dev/null; then
        alive=1
      fi
    done
    [ "$alive" -eq 0 ] && break
    i=$((i + 1))
    sleep 1
  done

  for pid in $pids; do
    kill -KILL "$pid" 2>/dev/null || true
  done
  log "Stop complete."
}

trap 'stop_all; exit 0' INT TERM

command -v svxreflector >/dev/null 2>&1 || die "svxreflector binary not found (jayReflector build)"
[ -f "$SVXREFLECTOR_CONF" ] || die "Config not found: $SVXREFLECTOR_CONF (expected volume mount)"

# Local-only by default. When ENABLE_FM_LINK=1, append the link stub
# (Satellite or Trunk keys from DJ1JAY) after the base lab conf.
if [ "$ENABLE_FM_LINK" = "1" ]; then
  [ -f "$SVXREFLECTOR_LINK_CONF" ] || die "ENABLE_FM_LINK=1 but link config missing: $SVXREFLECTOR_LINK_CONF"
  {
    cat "$SVXREFLECTOR_CONF"
    echo
    echo "###################################################################"
    echo "# Appended FM-Funknetz link stub (ENABLE_FM_LINK=1)"
    echo "###################################################################"
    cat "$SVXREFLECTOR_LINK_CONF"
  } >"$RUNTIME_CONF"
  conf_path="$RUNTIME_CONF"
  log "FM link enabled: using $SVXREFLECTOR_CONF + $SVXREFLECTOR_LINK_CONF"
else
  conf_path="$SVXREFLECTOR_CONF"
  log "FM link disabled (ENABLE_FM_LINK=0): local lab reflector only"
fi

# Ensure PKI dir exists for first-start cert bootstrap.
mkdir -p /etc/svxlink/pki /var/lib/svxlink/pki

start_bg "svxreflector" svxreflector --config "$conf_path" $SVXREFLECTOR_ARGS

log "jayReflector (svxreflector) is running. Waiting…"

exit_code=0
for pid in $pids; do
  if ! wait "$pid"; then
    exit_code=1
  fi
done

log "Exit (exit_code=$exit_code)"
exit "$exit_code"