#!/bin/bash
# 恢复成 A 组（quic 8 + http2 2）—— task-3 要求跑完保持现状
set -u

MAIN=/etc/systemd/system/lanremote-tunnel.service
H2=/etc/systemd/system/lanremote-tunnel-h2.service

echo "════════ 恢复 quic 8 + http2 2 ════════"
sed -i 's/--ha-connections [0-9]*/--ha-connections 8/' "$MAIN"
sed -i 's/--ha-connections [0-9]*/--ha-connections 2/' "$H2"
systemctl daemon-reload
systemctl restart lanremote-tunnel
sleep 2
systemctl restart lanremote-tunnel-h2
echo "  主: $(grep -oE '\-\-protocol [a-z0-9]+|\-\-ha-connections [0-9]+|\-\-metrics [0-9.:]+' "$MAIN" | tr '\n' ' ')"
echo "  副: $(grep -oE '\-\-protocol [a-z0-9]+|\-\-ha-connections [0-9]+|\-\-metrics [0-9.:]+' "$H2" | tr '\n' ' ')"

echo
echo "════════ 等连接建齐 ════════"
for i in $(seq 1 40); do
    sleep 4
    q=$(curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}')
    h=$(curl -s --max-time 5 http://127.0.0.1:20242/metrics 2>/dev/null | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}')
    q=${q:-0}; h=${h:-0}
    [ $((q + h)) -ge 8 ] && break
done
echo "  quic=$q  http2=$h  合计=$((q + h))"

echo
echo "════════ 公网确认 ════════"
for i in $(seq 1 15); do
    c=$(curl -s -o /dev/null -w '%{http_code}' --max-time 15 -H 'User-Agent: LanRemote/1.8.2' https://relay.xxmxxs.top/v1/health)
    echo "  第 $i 次: $c"
    [ "$c" = "200" ] && break
    sleep 3
done

echo
echo "════════ 其他配置复核 ════════"
echo "  MTU: $(cat /sys/class/net/wlan0/mtu)"
iptables -t mangle -S OUTPUT 2>/dev/null | grep TCPMSS | sed 's/^/  /'
echo "  watchdog: $(systemctl is-active lanremote-watchdog.timer)  $(wc -l < /root/lanremote-relay/watchdog.sh) 行"
grep -E '^THRESHOLD' /root/lanremote-relay/watchdog.sh | sed 's/^/    /'
echo "  relay 长轮询: $(grep -oE 'RELAY_POLL=[0-9]+' /etc/systemd/system/lanremote-relay.service 2>/dev/null)"
echo "  relay 版本: $(curl -s --max-time 10 http://127.0.0.1:8080/v1/health | python3 -c 'import sys,json; print(json.load(sys.stdin).get("version"))' 2>/dev/null)"