#!/usr/bin/env bash
# Keep the port-80 live.local edge proxy available after network/service drift.
set -Eeuo pipefail

ROOT_DIR="${LIVE_STACK_ROOT:-/opt/live/d2ypp}"
STACK_ENV="${LIVE_STACK_ENV:-$ROOT_DIR/config/system-stack.env}"
if [ -f "$STACK_ENV" ]; then
  # shellcheck source=/dev/null
  . "$STACK_ENV" || true
fi

INTERVAL="${LIVE_EDGE_WATCH_INTERVAL:-15}"
PORT="${PORT:-8001}"

log() {
  printf '[live-edge-watch] %s\n' "$*"
}

positive_int() {
  case "${1:-}" in
    ''|*[!0-9]*) return 1 ;;
    *) [ "$1" -gt 0 ] ;;
  esac
}

positive_int "$INTERVAL" || INTERVAL=15

while true; do
  if [ "${ENABLE_LIVE_EDGE_PROXY:-1}" != "1" ]; then
    sleep "$INTERVAL"
    continue
  fi

  if ! systemctl is-active --quiet live-console.service 2>/dev/null; then
    log "live-console.service inactive; starting"
    systemctl start live-console.service >/dev/null 2>&1 || true
    sleep 2
  fi

  if ! systemctl is-active --quiet live-edge.service 2>/dev/null; then
    log "live-edge.service inactive; starting"
    systemctl start live-edge.service >/dev/null 2>&1 || true
    sleep "$INTERVAL"
    continue
  fi

  if ! curl -fsS -m 4 "http://127.0.0.1/health" >/dev/null 2>&1; then
    log "port 80 health failed; restarting live-edge.service for upstream :$PORT"
    systemctl restart live-edge.service >/dev/null 2>&1 || true
  fi

  sleep "$INTERVAL"
done