# -*- coding: utf-8 -*-
r'''查隧道为什么掉连接（公网 530，连接数 1/0）。

上一轮才刚修掉 nettune 死锁、把公网拉到 200；这次重启 nettune 之后
又变成 530 了。要分清是：
    * nettune 又卡了（那个死锁没修干净？）
    * 还是隧道自己掉了（cloudflared 的问题）
'''
from __future__ import annotations

import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(ROOT / "_build"))
from devssh import run      # noqa: E402

REMOTE = r'''
echo "════ 1. 服务状态 + 有没有卡住的 ════"
for s in lanremote-relay lanremote-tunnel lanremote-tunnel-h2 lanremote-nettune; do
    printf '  %-24s %s\n' "$s" "$(systemctl is-active $s)"
done
echo "  --- nettune 卡住吗 ---"
systemctl show -p SubState -p MainPID -p ExecMainStartTimestamp lanremote-nettune 2>&1 | sed 's/^/    /'
echo "  --- 有没有卡住的 systemctl ---"
ps -eo pid,etime,cmd 2>/dev/null | grep -E 'systemctl|net-tune' | grep -v grep | sed 's/^/    /'

echo
echo "════ 2. net-tune 的修复在设备上吗 ════"
grep -c NETTUNE_SERVICE_CALL /root/lanremote-relay/net-tune.sh
echo "  unit 里有吗: $(grep -c NETTUNE_SERVICE_CALL /etc/systemd/system/lanremote-nettune.service)"

echo
echo "════ 3. 隧道为什么连接数是 0 ════"
journalctl -u lanremote-tunnel --no-pager -n 25 2>/dev/null | tail -25 | sed 's/^/  /'

echo
echo "════ 4. 隧道 unit 长什么样（重启策略 / 协议）════"
systemctl cat lanremote-tunnel 2>/dev/null | grep -vE '^#' | head -25 | sed 's/^/  /'

echo
echo "════ 5. cloudflared 进程 ════"
ps -eo pid,etime,rss,cmd 2>/dev/null | grep cloudflared | grep -v grep | sed 's/^/  /'
'''


def main() -> int:
    out = run(REMOTE, timeout=300)
    text = out[1] if isinstance(out, tuple) else str(out)
    print(text)
    return 0


if __name__ == "__main__":
    sys.exit(main())