#!/bin/bash
# Wait until LIVEKIT_URL (from .env) accepts TCP. Used so publishers do not
# race the local test livekit-server on boot. When LIVEKIT_URL points at a
# remote host this waits on that host instead.
#
# bash /dev/tcp to an unreachable host can hang until the kernel SYN timeout
# (longer than systemd TimeoutStartSec). Cap each probe at 1s.
set -u
ENV_FILE=/home/fdenkena/livekit-cameras/.env
if [ -f "$ENV_FILE" ]; then
  set -a
  # shellcheck disable=SC1090
  . "$ENV_FILE"
  set +a
fi
URL="${LIVEKIT_URL:-ws://127.0.0.1:7880}"
rest="${URL#*://}"
hostport="${rest%%/*}"
host="${hostport%%:*}"
port="${hostport##*:}"
case "$hostport" in
  *:*) ;;
  *)
    case "$URL" in
      wss://*) port=443 ;;
      *) port=80 ;;
    esac
    ;;
esac
if [ "$host" = "localhost" ]; then
  host=127.0.0.1
fi
echo "wait-for-livekit: $host:$port"
for _ in $(seq 1 30); do
  if timeout 1 bash -c "echo >/dev/tcp/${host}/${port}" 2>/dev/null; then
    echo "wait-for-livekit: ready"
    exit 0
  fi
  sleep 1
done
echo "wait-for-livekit: $host:$port not reachable after 30s" >&2
exit 1