#!/bin/sh
set -eu

NGINX_CONTAINER="${NGINX_CONTAINER:-lendry-id-nginx}"
GATEWAY_CONTAINER="${GATEWAY_CONTAINER:-lendry-id-api-gateway}"
BOOT_WAIT_SEC="${BOOT_WAIT_SEC:-55}"
GATEWAY_HEALTH_URL="http://${GATEWAY_CONTAINER}:3000/health"

reload_nginx() {
  if docker exec "$NGINX_CONTAINER" nginx -s reload 2>/dev/null; then
    echo "[nginx-gateway-sync] nginx reload OK"
  else
    echo "[nginx-gateway-sync] nginx reload failed — пробуем restart"
    docker restart "$NGINX_CONTAINER" >/dev/null 2>&1 || true
  fi
}

verify_gateway() {
  if docker exec "$NGINX_CONTAINER" wget -qO- --timeout=5 "$GATEWAY_HEALTH_URL" 2>/dev/null \
    | grep -q '"status"'; then
    echo "[nginx-gateway-sync] nginx → ${GATEWAY_CONTAINER}:3000/health OK"
  else
    echo "[nginx-gateway-sync] предупреждение: nginx пока не достучался до ${GATEWAY_HEALTH_URL}"
  fi
}

on_gateway_start() {
  echo "[nginx-gateway-sync] ${GATEWAY_CONTAINER} перезапущен, ждём Nest (${BOOT_WAIT_SEC}s)..."
  sleep "$BOOT_WAIT_SEC"
  reload_nginx
  sleep 2
  verify_gateway
}

echo "[nginx-gateway-sync] слежение за ${GATEWAY_CONTAINER} (boot wait ${BOOT_WAIT_SEC}s)..."

# Первый запуск стека: gateway уже healthy, но nginx мог стартовать раньше — синхронизируем.
(
  sleep "$BOOT_WAIT_SEC"
  reload_nginx
  sleep 2
  verify_gateway
) &

docker events \
  --filter "container=${GATEWAY_CONTAINER}" \
  --filter event=start \
  --format '{{.Time}}' | while read -r _; do
  on_gateway_start
done