#!/usr/bin/env bash
# vol_live 모니터 HTTP 서버 (포트 기본 8766 — Binance 8765와 분리)
set -euo pipefail
# shellcheck source=scripts/_cron_env.sh
source "$(dirname "$0")/_cron_env.sh"

PIDFILE="${CRON_PROJECT_ROOT}/data/spot/operations/vol_monitor.pid"
PORT="${VOL_MONITOR_PORT:-8766}"
export VOL_MONITOR_PORT="$PORT"

if [ "${1:-}" = "--stop" ]; then
  if [ -f "$PIDFILE" ]; then
    pid="$(cat "$PIDFILE")"
    if kill -0 "$pid" 2>/dev/null; then
      kill "$pid"
      echo "stopped pid $pid"
    fi
    rm -f "$PIDFILE"
  else
    echo "pid file 없음"
  fi
  exit 0
fi

if [ -f "$PIDFILE" ]; then
  old_pid="$(cat "$PIDFILE")"
  if kill -0 "$old_pid" 2>/dev/null; then
    if lsof -iTCP:"$PORT" -sTCP:LISTEN -p "$old_pid" >/dev/null 2>&1; then
      echo "이미 실행 중: pid $old_pid → http://127.0.0.1:${PORT}/vol_live_monitor.html"
      exit 0
    fi
    kill "$old_pid" 2>/dev/null || true
  fi
  rm -f "$PIDFILE"
fi

ensure_cron_log_dir "data/spot/operations"
LOG="${CRON_PROJECT_ROOT}/data/spot/operations/vol_monitor_serve.log"
PYTHON="$(resolve_bithumb_python)" || exit 1

nohup "$PYTHON" "${CRON_PROJECT_ROOT}/scripts/3_run_vol_monitor.py" --serve-only >> "$LOG" 2>&1 &
pid=$!
disown "$pid" 2>/dev/null || true
echo "$pid" > "$PIDFILE"
sleep 2

if curl -sf -o /dev/null "http://127.0.0.1:${PORT}/vol_live_monitor.html"; then
  echo "모니터 시작: http://127.0.0.1:${PORT}/vol_live_monitor.html"
  echo "로그: $LOG"
  echo "종료: bash scripts/3_run_vol_monitor_serve.sh --stop"
else
  echo "서버 기동 실패 — 로그 확인: $LOG" >&2
  tail -20 "$LOG" 2>/dev/null || true
  exit 1
fi