#!/bin/sh
# NAS 进程监控 开机自启脚本（以 root 运行，以便读取所有进程的网络连接信息）
APP=/volume1/web/nas-monitor/app.py
LOG=/volume1/web/nas-monitor/app.log
PIDFILE=/volume1/web/nas-monitor/app.pid
PY=$(command -v python3 || echo /usr/bin/python3)

start() {
  if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
    echo "nas-monitor 已在运行 (PID $(cat "$PIDFILE"))"; return 0
  fi
  # 等待数据卷 volume1 挂载就绪（最多 90 秒），避免开机时脚本早于卷挂载而静默失败
  n=0
  while [ ! -f "$APP" ] && [ $n -lt 90 ]; do
    sleep 1; n=$((n+1))
  done
  if [ ! -f "$APP" ]; then
    echo "等待 $APP 超时（数据卷可能未挂载），启动放弃"; return 1
  fi
  setsid nohup "$PY" "$APP" > "$LOG" 2>&1 < /dev/null &
  echo $! > "$PIDFILE"
  sleep 2
  if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
    echo "nas-monitor 已启动 (PID $(cat "$PIDFILE"))"
  else
    echo "启动失败，请查看 $LOG"; return 1
  fi
}
stop() {
  if [ -f "$PIDFILE" ]; then kill "$(cat "$PIDFILE")" 2>/dev/null; rm -f "$PIDFILE"; fi
  pkill -f "nas-monitor/app.py" 2>/dev/null
  echo "nas-monitor 已停止"
}
case "$1" in
  start) start ;;
  stop) stop ;;
  restart) stop; sleep 1; start ;;
  *) echo "用法: $0 {start|stop|restart}"; exit 1 ;;
esac