#!/bin/bash
# 现状全面勘察（只读）：双隧道实例、watchdog、日志、连接数
set -u

echo "════════ 1. 隧道服务清单 ════════"
for u in lanremote-tunnel lanremote-tunnel-h2; do
    if systemctl list-unit-files 2>/dev/null | grep -q "^$u.service"; then
        echo "  ── $u ──"
        echo "     状态: $(systemctl is-active $u 2>/dev/null) / $(systemctl is-enabled $u 2>/dev/null)"
        systemctl cat $u 2>/dev/null | grep -E '^ExecStart=' | sed 's/^/     /'
    else
        echo "  ── $u：不存在 ──"
    fi
done

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

echo
echo "════════ 3. 谁绑上了 20241 metrics 端口 ════════"
ss -tlnp 2>/dev/null | grep 20241 | sed 's/^/  /' || echo "  （没人绑）"
echo "  metrics 报的连接数:"
curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null \
    | grep -E '^cloudflared_tunnel_ha_connections' | sed 's/^/    /'

echo
echo "════════ 4. 两个实例各自的日志文件 ════════"
ls -la /root/lanremote-relay/*.log 2>/dev/null | sed 's/^/  /'

echo
echo "════════ 5. watchdog 脚本关键逻辑 ════════"
grep -nE 'metrics|20241|ha_connections|CONNS|restart_tunnel|systemctl restart' \
    /root/lanremote-relay/watchdog.sh 2>/dev/null | head -30 | sed 's/^/  /'

echo
echo "════════ 6. watchdog 服务状态 ════════"
systemctl is-active lanremote-watchdog 2>/dev/null | sed 's/^/  active: /'
systemctl is-enabled lanremote-watchdog 2>/dev/null | sed 's/^/  enabled: /'
echo "  最近 15 行 watchdog 日志:"
tail -15 /root/lanremote-relay/watchdog.log 2>/dev/null | sed 's/^/    /'

echo
echo "════════ 7. net-tune（MTU/MSS 持久化）════════"
echo "  wlan0 MTU: $(cat /sys/class/net/wlan0/mtu 2>/dev/null)"
iptables -t mangle -S OUTPUT 2>/dev/null | grep TCPMSS | sed 's/^/  /'
systemctl cat lanremote-nettune 2>/dev/null | grep ExecStart | sed 's/^/  /'

echo
echo "════════ 8. 中转版本和健康 ════════"
curl -s --max-time 10 http://127.0.0.1:8080/v1/health | head -c 160 | sed 's/^/  /'
echo
echo "  长轮询设定: $(grep -oE 'RELAY_POLL=[0-9]+' /etc/systemd/system/lanremote-relay.service 2>/dev/null)"

echo
echo "════════ 9. 系统负载 / 内存 ════════"
uptime | sed 's/^/  /'
free -m | sed 's/^/  /'