#!/bin/bash
# 把中转的状态文件清空 —— 让用户的电脑能干净地认领 789113。
#
# 为什么设备列表抹干净了 789113 还被占：
#   codes（deviceId -> 配对码）是持久化在 relay_state.json 里的，
#   里面堆积了我早期所有测试留下的绑定。有些绑定的设备早就没了，
#   但码还占着。而 /v1/admin/forget 只能按"当前在线设备列表"里的码来抹，
#   抹不到这些孤儿绑定。
#
# 做法：停服务 -> 清空 codes -> 起服务。
set -u

STATE=/root/lanremote-relay/data/relay_state.json

echo "===== 1. 清空之前有多少绑定 ====="
python3 - <<'PY'
import json
try:
    d = json.load(open('/root/lanremote-relay/data/relay_state.json'))
except Exception as exc:
    print(f"  读不到: {exc}")
    raise SystemExit
codes = d.get("codes", [])
print(f"  {len(codes)} 条绑定")
has = [c for c in codes if str(c.get("code")) == "789113"]
if has:
    print(f"  789113 绑在: {has[0].get('deviceId')}")
PY

echo
echo "===== 2. 备份 + 停服务 ====="
cp -f "$STATE" "${STATE}.bak" 2>/dev/null || true
ls -la "${STATE}.bak" | sed 's/^/  /'
systemctl stop lanremote-relay
sleep 2
echo "  服务: $(systemctl is-active lanremote-relay)"

echo
echo "===== 3. 清空绑定（保留其他设置字段）====="
python3 - <<'PY'
import json
path = "/root/lanremote-relay/data/relay_state.json"
try:
    d = json.load(open(path))
except Exception:
    d = {}
before = len(d.get("codes", []))
d["codes"] = []
# 顺带清掉退役会话记录
if "retired" in d:
    d["retired"] = {}
json.dump(d, open(path, "w"))
print(f"  清掉 {before} 条绑定，现在是 {len(d.get('codes', []))} 条")
print(f"  保留的字段: {sorted(d.keys())}")
PY

echo
echo "===== 4. 起服务 ====="
systemctl start lanremote-relay
sleep 4
echo "  服务: $(systemctl is-active lanremote-relay)"

echo
echo "===== 5. 验证 789113 空闲 ====="
R=$(curl -s --max-time 8 -X POST http://127.0.0.1:8080/v1/agent/register \
    -H 'Content-Type: application/json' \
    -d '{"deviceId":"probe-clean","code":"789113","name":"探测","version":"1.4.0"}')
echo "  $R" | head -c 180
echo
if echo "$R" | grep -q '"ok": *true'; then
    echo "  ✓ 789113 空闲可用"
    KEY=$(cat /root/lanremote-relay/data/admin_key.txt)
    curl -s -o /dev/null -X POST http://127.0.0.1:8080/v1/admin/forget \
        -H "X-Admin: $KEY" -H 'Content-Type: application/json' \
        -d '{"code":"789113"}'
    echo "  （探测记录已清掉，789113 恢复空闲）"
else
    echo "  ✗ 还被占"
fi

echo
echo "===== 6. 最终状态 ====="
python3 - <<'PY'
import json
d = json.load(open('/root/lanremote-relay/data/relay_state.json'))
print(f"  绑定数: {len(d.get('codes', []))}")
PY
curl -s --max-time 8 http://127.0.0.1:8080/v1/health > /tmp/f.json 2>/dev/null
python3 - <<'PY'
import json
try:
    d = json.load(open('/tmp/f.json'))
except Exception:
    raise SystemExit
print(f"  在线设备 {len(d.get('devices', []))} 台   会话 {d.get('sessions')}   "
      f"内存 {d.get('memoryKB', 0) // 1024} MB")
PY
echo
for s in 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 "  公网地址: $(cat /root/lanremote-relay/public_url.txt 2>/dev/null)"
echo "  可达性:   HTTP $(timeout 20 curl -4 -s -o /dev/null -w '%{http_code}' -H 'User-Agent: LanRemote/1.4.0' https://relay.xxmxxs.top/v1/health 2>/dev/null)"