#!/bin/bash
# 最终状态一页纸。
set -u

RELAY_DIR=/root/lanremote-relay
URL=https://relay.xxmxxs.top

echo "════════ 服务 ════════"
for s in lanremote-nettune.service lanremote-relay lanremote-tunnel \
         lanremote-watchdog.timer; do
    printf "  %-30s %-9s %s\n" "$s" \
        "$(systemctl is-active "$s" 2>/dev/null)" \
        "$(systemctl is-enabled "$s" 2>/dev/null)"
done

echo
echo "════════ 网络调优（这次的关键修复）════════"
echo "  tcp_mtu_probing = $(cat /proc/sys/net/ipv4/tcp_mtu_probing)"
echo "  MSS 夹取 = $(iptables -t mangle -L -n 2>/dev/null | grep -oE 'set [0-9]+' | head -1 | cut -d' ' -f2)"
echo "  wlan0 MTU = $(cat /sys/class/net/wlan0/mtu 2>/dev/null)（保持 1500）"

echo
echo "════════ 隧道 ════════"
echo "  协议 = http2"
echo "  配置 = $(grep -o 'ha-connections [0-9]*' /etc/systemd/system/lanremote-tunnel.service)"
echo "  当前连接数 = $(curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}')"

echo
echo "════════ 可用率（3 组 × 20 次）════════"
total_ok=0; total=0
for group in 1 2 3; do
    ok=0
    for i in $(seq 1 20); do
        c=$(timeout 12 curl -4 -s -o /dev/null -w '%{http_code}' \
            -H 'User-Agent: LanRemote/1.4.0' "$URL/v1/health" 2>/dev/null)
        [ "$c" = "200" ] && ok=$((ok+1))
        sleep 1
    done
    total_ok=$((total_ok+ok)); total=$((total+20))
    echo "  第 $group 组: $ok/20 = $((ok*5))%"
done
pct=$((total_ok * 100 / total))
echo "  合计 $total_ok/$total = ${pct}%"

echo
echo "════════ 局域网对照 ════════"
lan=0
for i in $(seq 1 20); do
    c=$(timeout 5 curl -s -o /dev/null -w '%{http_code}' \
        http://192.168.10.105:8080/v1/health 2>/dev/null)
    [ "$c" = "200" ] && lan=$((lan+1))
done
echo "  $lan/20 = $((lan*5))%"

echo
echo "════════ 全程战绩 ════════"
echo "  最初 QUIC ha=1（未做任何优化）   48%"
echo "  HTTP/2 ha=2                     60~75%"
echo "  + chunked 请求体修复             72%"
echo "  + MTU 修复（MSS 1400 + 探测）   85% ~ 100%"
echo "  本次实测                        ${pct}%"
echo "  局域网路径                      100%"