import {
  AlertTriangle,
  CheckCircle,
  XCircle,
  Clock,
  MessageSquare,
  RefreshCw,
  Filter,
  Info,
  AlertOctagon,
  Bell,
  ChevronRight,
  Bot,
  Loader2,
  Sparkles,
  Terminal,
  Lightbulb,
  Zap,
} from "lucide-react";
import React, { useEffect, useState, useCallback, useRef } from "react";
import { Button } from "../ui/button";
import { Badge } from "../ui/badge";
import { Input } from "../ui/input";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "../ui/select";
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
  DialogFooter,
} from "../ui/dialog";
import { Label } from "../ui/label";
import { Textarea } from "../ui/textarea";
import {
  inspectionAlertApi,
  type AlertRecord,
  type AlertLevel,
  type AlertRecordStatus,
  type AlertStats,
} from "../../infrastructure/inspection/inspectionApi";
import { toast } from "../ui/toast";
import { runRCA, type RunRCAResult } from "../../infrastructure/ai/rcaAgent/rcaRunner";

const LEVEL_COLORS: Record<AlertLevel, { bg: string; text: string; border: string; dot: string }> = {
  critical: {
    bg: "bg-red-500/10",
    text: "text-red-500",
    border: "border-red-500/30",
    dot: "bg-red-500",
  },
  warning: {
    bg: "bg-orange-500/10",
    text: "text-orange-500",
    border: "border-orange-500/30",
    dot: "bg-orange-500",
  },
  info: {
    bg: "bg-blue-500/10",
    text: "text-blue-500",
    border: "border-blue-500/30",
    dot: "bg-blue-500",
  },
};

const LEVEL_LABELS: Record<AlertLevel, string> = {
  critical: "严重",
  warning: "警告",
  info: "提示",
};

const STATUS_LABELS: Record<AlertRecordStatus, string> = {
  active: "待处理",
  acknowledged: "已确认",
  resolved: "已恢复",
  closed: "已关闭",
};

const STATUS_COLORS: Record<AlertRecordStatus, string> = {
  active: "text-red-500",
  acknowledged: "text-orange-500",
  resolved: "text-green-500",
  closed: "text-muted-foreground",
};

export function AlertCenterPage() {
  const [alerts, setAlerts] = useState<AlertRecord[]>([]);
  const [stats, setStats] = useState<AlertStats | null>(null);
  const [loading, setLoading] = useState(true);
  const [selectedAlert, setSelectedAlert] = useState<AlertRecord | null>(null);
  const [detailOpen, setDetailOpen] = useState(false);
  const [noteDialogOpen, setNoteDialogOpen] = useState(false);
  const [noteText, setNoteText] = useState("");

  // 防御：清洗告警里可能残留的 [object Object]（老数据修复前写入的坏值）
  const _clean = (v: any): string => {
    if (v === null || v === undefined) return "";
    const s = typeof v === "string" ? v : String(v);
    // 已经包含 [object Object] 片段 → 尝试 JSON.parse 救回来，失败就显示 "—"
    if (s.includes("[object Object]")) {
      // 可能是 JSON.parse 后还能救
      try {
        const parsed = JSON.parse(s.replace(/\[object Object\]/g, '"..."'));
        return JSON.stringify(parsed).slice(0, 300);
      } catch {
        return s.replace(/\[object Object\]/g, "—").replace(/, —/g, " —");
      }
    }
    return s;
  };

  // RCA 状态
  const [rcaLoading, setRcaLoading] = useState(false);
  const [rcaResult, setRcaResult] = useState<RunRCAResult | null>(null);

  // 筛选
  const [filterLevel, setFilterLevel] = useState<string>("all");
  const [filterStatus, setFilterStatus] = useState<string>("all");
  const [searchText, setSearchText] = useState("");
  const [activeTab, setActiveTab] = useState<"active" | "all">("active");

  const isFirstLoadRef = useRef(true);

  const loadData = useCallback(async (silent = false) => {
    if (!silent) setLoading(true);
    try {
      const [statsData, alertsData] = await Promise.all([
        inspectionAlertApi.getStats(),
        activeTab === "active"
          ? inspectionAlertApi.getActive()
          : inspectionAlertApi.list({ limit: 2000 }),
      ]);
      setStats(statsData);
      setAlerts(alertsData);
    } catch (e: any) {
      console.error("[AlertCenter] 加载失败:", e);
    } finally {
      if (!silent) setLoading(false);
      isFirstLoadRef.current = false;
    }
  }, [activeTab]);

  useEffect(() => {
    loadData(false);
  }, [loadData]);

  // 订阅主进程告警变化事件，自动刷新（静默刷新，不显示 loading 避免闪动）
  useEffect(() => {
    const api = (window as any).netcatty?.inspection;
    if (!api?.onAlertChanged) return;
    // 给事件刷新再加 500ms 前端侧 debounce，避免主进程高频广播时连续触发
    let timer: ReturnType<typeof setTimeout> | null = null;
    const handler = () => {
      if (timer) clearTimeout(timer);
      timer = setTimeout(() => loadData(true), 500);
    };
    const unsub = api.onAlertChanged(handler);
    return () => {
      if (timer) clearTimeout(timer);
      try { unsub?.(); } catch (_) {}
    };
  }, [loadData]);

  // 筛选后的数据
  const filteredAlerts = (alerts ?? []).filter((a) => {
    if (filterLevel !== "all" && a.level !== filterLevel) return false;
    if (filterStatus !== "all" && a.status !== filterStatus) return false;
    if (searchText) {
      const s = searchText.toLowerCase();
      if (
        !a.device_name.toLowerCase().includes(s) &&
        !a.rule_name.toLowerCase().includes(s) &&
        !a.message.toLowerCase().includes(s)
      )
        return false;
    }
    return true;
  });

  const handleViewDetail = (alert: AlertRecord) => {
    setSelectedAlert(alert);
    // 自动恢复：如果告警 note 里有 [RCA_JSON] 标记，解析并填充 rcaResult
    if (alert.note?.startsWith("[RCA_JSON]")) {
      try {
        const parsed = JSON.parse(alert.note.slice("[RCA_JSON]".length));
        if (parsed.__rca_json && parsed.summary) {
          setRcaResult({
            success: true,
            rca: {
              summary: parsed.summary,
              confidence: parsed.confidence ?? "medium",
              rootCauses: parsed.rootCauses || [],
              evidence: parsed.evidence || [],
              recommendations: parsed.recommendations || [],
            },
            error: undefined,
          } as any);
        } else {
          setRcaResult(null);
        }
      } catch {
        setRcaResult(null);
      }
    } else {
      setRcaResult(null);
    }
    setDetailOpen(true);
  };

  /** 触发 AI 根因分析（RCA）— 同步阻塞直到结果返回，完成后持久化到告警记录 note 字段 */
  const triggerRCA = async (alert: AlertRecord) => {
    setRcaLoading(true);
    setRcaResult(null);
    try {
      toast.info("AI 正在分析故障根因...（最多 3 分钟）");
      const result = await runRCA(alert);
      setRcaResult(result);
      if (result.success && result.rca) {
        toast.success("AI 分析完成");
        // 持久化 RCA 结果到告警记录 note 字段，加 [RCA_JSON] 前缀标记
        try {
          const rcaPayload = JSON.stringify({
            __rca_json: true,
            generated_at: Date.now(),
            summary: result.rca.summary,
            confidence: result.rca.confidence,
            rootCauses: result.rca.rootCauses,
            evidence: result.rca.evidence,
            recommendations: result.rca.recommendations,
          });
          await inspectionAlertApi.updateNote(alert.id, `[RCA_JSON]${rcaPayload}`);
          // 同时更新本地 selectedAlert 的 note，这样详情弹窗里也能看到
          setSelectedAlert(prev => prev ? { ...prev, note: `[RCA_JSON]${rcaPayload}` } : prev);
        } catch (persistErr) {
          console.warn("RCA 结果持久化失败:", persistErr);
          // 持久化失败不影响 UI 展示
        }
      } else {
        toast.error("AI 分析失败：" + (result.error || "输出解析失败"));
      }
    } catch (e: any) {
      toast.error("AI 分析异常：" + (e?.message || String(e)));
    } finally {
      setRcaLoading(false);
    }
  };

  const handleAcknowledge = async () => {
    if (!selectedAlert) return;
    try {
      await inspectionAlertApi.acknowledge(selectedAlert.id, "operator");
      toast.success("已确认告警");
      setDetailOpen(false);
      loadData();
    } catch (e: any) {
      toast.error("操作失败");
    }
  };

  const handleResolve = async () => {
    if (!selectedAlert) return;
    try {
      await inspectionAlertApi.resolve(selectedAlert.id, "manual", "operator");
      toast.success("已恢复告警");
      setDetailOpen(false);
      loadData();
    } catch (e: any) {
      toast.error("操作失败");
    }
  };

  const handleClose = () => {
    if (!selectedAlert) return;
    setNoteText("");
    setNoteDialogOpen(true);
  };

  const handleCloseConfirm = async () => {
    if (!selectedAlert) return;
    try {
      await inspectionAlertApi.close(selectedAlert.id, noteText);
      toast.success("已关闭告警");
      setNoteDialogOpen(false);
      setDetailOpen(false);
      loadData();
    } catch (e: any) {
      toast.error("操作失败");
    }
  };

  const formatTime = (ts: number) => {
    return new Date(ts).toLocaleString();
  };

  const getTimeAgo = (ts: number) => {
    const diff = Date.now() - ts;
    const mins = Math.floor(diff / 60000);
    if (mins < 1) return "刚刚";
    if (mins < 60) return `${mins} 分钟前`;
    const hours = Math.floor(mins / 60);
    if (hours < 24) return `${hours} 小时前`;
    const days = Math.floor(hours / 24);
    return `${days} 天前`;
  };

  return (
    <div className="h-full flex flex-col">
      {/* 顶部统计 */}
      <div className="px-6 py-4 border-b border-border/60">
        <div className="flex items-center justify-between mb-4">
          <div className="flex items-center gap-3">
            <div className="w-9 h-9 rounded-lg bg-red-500/10 flex items-center justify-center">
              <Bell size={18} className="text-red-500" />
            </div>
            <div>
              <h2 className="text-lg font-semibold">告警中心</h2>
              <p className="text-sm text-muted-foreground">
                监控设备巡检产生的告警
              </p>
            </div>
          </div>
          <Button variant="outline" size="sm" onClick={() => loadData(false)}>
            <RefreshCw size={14} className="mr-2" />
            刷新
          </Button>
        </div>

        {/* 统计卡片 */}
        <div className="grid grid-cols-4 gap-3">
          <div className="p-3 rounded-lg border border-red-500/30 bg-red-500/5">
            <div className="flex items-center gap-2">
              <AlertOctagon size={16} className="text-red-500" />
              <span className="text-sm text-muted-foreground">严重告警</span>
            </div>
            <div className="text-2xl font-bold text-red-500 mt-1">
              {stats?.active_critical ?? 0}
            </div>
          </div>
          <div className="p-3 rounded-lg border border-orange-500/30 bg-orange-500/5">
            <div className="flex items-center gap-2">
              <AlertTriangle size={16} className="text-orange-500" />
              <span className="text-sm text-muted-foreground">警告</span>
            </div>
            <div className="text-2xl font-bold text-orange-500 mt-1">
              {stats?.active_warning ?? 0}
            </div>
          </div>
          <div className="p-3 rounded-lg border border-blue-500/30 bg-blue-500/5">
            <div className="flex items-center gap-2">
              <Info size={16} className="text-blue-500" />
              <span className="text-sm text-muted-foreground">提示</span>
            </div>
            <div className="text-2xl font-bold text-blue-500 mt-1">
              {stats?.active_info ?? 0}
            </div>
          </div>
          <div className="p-3 rounded-lg border border-green-500/30 bg-green-500/5">
            <div className="flex items-center gap-2">
              <CheckCircle size={16} className="text-green-500" />
              <span className="text-sm text-muted-foreground">已恢复</span>
            </div>
            <div className="text-2xl font-bold text-green-500 mt-1">
              {stats?.resolved ?? 0}
            </div>
          </div>
        </div>
      </div>

      {/* 筛选栏 */}
      <div className="flex items-center gap-3 px-6 py-3 border-b border-border/60">
        <div className="flex bg-secondary/50 rounded-md p-0.5">
          <button
            onClick={() => setActiveTab("active")}
            className={`px-3 py-1.5 text-sm rounded-md transition-colors ${
              activeTab === "active"
                ? "bg-background shadow-sm font-medium"
                : "text-muted-foreground hover:text-foreground"
            }`}
          >
            待处理
            {stats && stats.active > 0 && (
              <Badge className="ml-2" variant="secondary">
                {stats.active}
              </Badge>
            )}
          </button>
          <button
            onClick={() => setActiveTab("all")}
            className={`px-3 py-1.5 text-sm rounded-md transition-colors ${
              activeTab === "all"
                ? "bg-background shadow-sm font-medium"
                : "text-muted-foreground hover:text-foreground"
            }`}
          >
            全部
          </button>
        </div>

        <div className="flex-1" />

        <Select value={filterLevel} onValueChange={setFilterLevel}>
          <SelectTrigger className="w-32">
            <SelectValue placeholder="级别" />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="all">全部级别</SelectItem>
            <SelectItem value="critical">严重</SelectItem>
            <SelectItem value="warning">警告</SelectItem>
            <SelectItem value="info">提示</SelectItem>
          </SelectContent>
        </Select>

        {activeTab === "all" && (
          <Select value={filterStatus} onValueChange={setFilterStatus}>
            <SelectTrigger className="w-32">
              <SelectValue placeholder="状态" />
            </SelectTrigger>
            <SelectContent>
              <SelectItem value="all">全部状态</SelectItem>
              <SelectItem value="active">待处理</SelectItem>
              <SelectItem value="acknowledged">已确认</SelectItem>
              <SelectItem value="resolved">已恢复</SelectItem>
              <SelectItem value="closed">已关闭</SelectItem>
            </SelectContent>
          </Select>
        )}

        <Input
          placeholder="搜索设备/规则..."
          value={searchText}
          onChange={(e) => setSearchText(e.target.value)}
          className="w-48"
        />
      </div>

      {/* 告警列表 */}
      <div className="flex-1 overflow-auto">
        {loading ? (
          <div className="text-center text-muted-foreground py-12">加载中...</div>
        ) : filteredAlerts.length === 0 ? (
          <div className="text-center text-muted-foreground py-16">
            <CheckCircle size={40} className="mx-auto mb-3 text-green-500 opacity-40" />
            <p className="text-sm">暂无告警记录</p>
            <p className="text-xs text-muted-foreground mt-1">
              {activeTab === "active" ? "所有设备运行正常" : "还没有产生过告警"}
            </p>
          </div>
        ) : (
          <div className="divide-y divide-border/60">
            {filteredAlerts.map((alert) => {
              const colors = LEVEL_COLORS[alert.level];
              return (
                <div
                  key={alert.id}
                  onClick={() => handleViewDetail(alert)}
                  className="flex items-center gap-4 px-6 py-3 hover:bg-accent/30 cursor-pointer transition-colors"
                >
                  {/* 级别指示点 */}
                  <div className={`w-2 h-2 rounded-full ${colors.dot}`} />

                  {/* 主要内容 */}
                  <div className="flex-1 min-w-0">
                    <div className="flex items-center gap-2 mb-0.5">
                      <span className="font-medium truncate">{alert.device_name}</span>
                      <Badge
                        variant="outline"
                        className={`${colors.bg} ${colors.text} ${colors.border} border`}
                      >
                        {LEVEL_LABELS[alert.level]}
                      </Badge>
                      <span className={`text-xs ${STATUS_COLORS[alert.status]}`}>
                        {STATUS_LABELS[alert.status]}
                      </span>
                    </div>
                    <div className="text-sm text-muted-foreground truncate">
                      {alert.rule_name} — {alert.message}
                    </div>
                  </div>

                  {/* 时间 */}
                  <div className="text-right shrink-0">
                    <div className="text-sm text-muted-foreground">
                      {getTimeAgo(alert.triggered_at)}
                    </div>
                    <div className="text-xs text-muted-foreground/60">
                      {formatTime(alert.triggered_at)}
                    </div>
                  </div>

                  {/* 快速 AI 根因分析（阻止冒泡避免触发详情 Dialog） */}
                  {(() => {
                    const hasRca = alert.note?.startsWith("[RCA_JSON]");
                    if (hasRca) {
                      return (
                        <span
                          className="shrink-0 inline-flex items-center gap-1 px-2 h-7 rounded-md bg-purple-500/10 text-purple-400 text-[11px] font-medium cursor-pointer"
                          title="AI 已完成根因分析，点击查看详情"
                          onClick={(e) => { e.stopPropagation(); handleViewDetail(alert); }}
                        >
                          <Bot size={12} />
                          已分析
                        </span>
                      );
                    }
                    return (
                      <Button
                        variant="ghost"
                        size="icon"
                        className="shrink-0 h-7 w-7 text-purple-500 hover:text-purple-400 hover:bg-purple-500/10"
                        onClick={(e) => {
                          e.stopPropagation();
                          handleViewDetail(alert);
                          triggerRCA(alert);
                        }}
                        title="AI 根因分析"
                      >
                        <Bot size={14} />
                      </Button>
                    );
                  })()}

                  <ChevronRight size={16} className="text-muted-foreground shrink-0" />
                </div>
              );
            })}
          </div>
        )}
      </div>

      {/* 详情弹窗 */}
      <Dialog open={detailOpen} onOpenChange={setDetailOpen}>
        <DialogContent className="w-[66vw] h-[80vh] max-w-[95vw] max-h-[95vh] flex flex-col overflow-hidden">
          {selectedAlert && (
            <>
              <DialogHeader className="shrink-0">
                <DialogTitle className="flex items-center gap-2">
                  <div
                    className={`w-2 h-2 rounded-full ${LEVEL_COLORS[selectedAlert.level].dot}`}
                  />
                  告警详情
                </DialogTitle>
              </DialogHeader>

              <div className="flex-1 min-h-0 overflow-y-auto pr-2 space-y-4 py-2">
                <div className="grid grid-cols-2 gap-4">
                  <div>
                    <div className="text-xs text-muted-foreground mb-1">设备名称</div>
                    <div className="text-sm font-medium">{selectedAlert.device_name}</div>
                  </div>
                  <div>
                    <div className="text-xs text-muted-foreground mb-1">告警级别</div>
                    <Badge
                      variant="outline"
                      className={`${LEVEL_COLORS[selectedAlert.level].bg} ${
                        LEVEL_COLORS[selectedAlert.level].text
                      } ${LEVEL_COLORS[selectedAlert.level].border} border`}
                    >
                      {LEVEL_LABELS[selectedAlert.level]}
                    </Badge>
                  </div>
                </div>

                <div>
                  <div className="text-xs text-muted-foreground mb-1">规则名称</div>
                  <div className="text-sm">{selectedAlert.rule_name}</div>
                </div>

                <div>
                  <div className="text-xs text-muted-foreground mb-1">告警消息</div>
                  <div className="text-sm p-2 bg-secondary/30 rounded-md break-all">
                    {_clean(selectedAlert.message)}
                  </div>
                </div>

                <div className="grid grid-cols-2 gap-4">
                  <div>
                    <div className="text-xs text-muted-foreground mb-1">当前值</div>
                    <div className="text-sm font-mono break-all">{_clean(selectedAlert.metric_value)}</div>
                  </div>
                  <div>
                    <div className="text-xs text-muted-foreground mb-1">阈值</div>
                    <div className="text-sm font-mono break-all">{_clean(selectedAlert.threshold)}</div>
                  </div>
                </div>

                <div>
                  <div className="text-xs text-muted-foreground mb-1">触发时间</div>
                  <div className="text-sm">{formatTime(selectedAlert.triggered_at)}</div>
                </div>

                <div>
                  <div className="text-xs text-muted-foreground mb-1">当前状态</div>
                  <div className={`text-sm font-medium ${STATUS_COLORS[selectedAlert.status]}`}>
                    {STATUS_LABELS[selectedAlert.status]}
                  </div>
                </div>

                {/* 备注（过滤掉 [RCA_JSON] 结构化数据段，只展示人工备注） */}
                {(() => {
                  const rawNote = selectedAlert.note || "";
                  const humanNote = rawNote
                    .replace(/\[RCA_JSON\][\s\S]*?(?=\n\[|\n---|\n$|$)/g, "")
                    .replace(/\[RCA_JSON\][\s\S]*$/g, "")
                    .trim();
                  if (!humanNote) return null;
                  return (
                    <div>
                      <div className="text-xs text-muted-foreground mb-1">备注</div>
                      <div className="text-sm text-muted-foreground whitespace-pre-wrap">{humanNote}</div>
                    </div>
                  );
                })()}

                {/* AI 根因分析结果卡片 */}
                {rcaLoading && (
                  <div className="rounded-md border border-purple-500/30 bg-purple-500/5 p-3">
                    <div className="flex items-center gap-2 text-purple-500 text-sm">
                      <Loader2 size={16} className="animate-spin" />
                      <span className="font-medium">AI 正在分析故障根因...</span>
                    </div>
                    <div className="mt-1 text-xs text-muted-foreground">
                      主动连接设备执行诊断命令，可能需要 1-3 分钟
                    </div>
                  </div>
                )}

                {rcaResult && !rcaLoading && (
                  <div className="rounded-xl border border-purple-500/30 bg-gradient-to-br from-purple-500/5 via-transparent to-transparent p-5 space-y-5">
                    {/* Header */}
                    <div className="flex items-center justify-between">
                      <div className="flex items-center gap-2.5 text-purple-400">
                        <div className="flex items-center justify-center w-7 h-7 rounded-lg bg-purple-500/15 border border-purple-500/30">
                          <Sparkles size={14} />
                        </div>
                        <span className="font-semibold text-base">AI 根因分析结果</span>
                        <span className="text-[11px] text-muted-foreground border border-border/60 rounded px-1.5 py-0.5">
                          {rcaResult.source === "ai" ? "AI 驱动" : "规则兜底"}
                        </span>
                      </div>
                      {rcaResult.rca && (
                        <Badge
                          variant="outline"
                          className={
                            rcaResult.rca.confidence >= 80
                              ? "border-green-500/50 bg-green-500/10 text-green-400"
                              : rcaResult.rca.confidence >= 50
                                ? "border-yellow-500/50 bg-yellow-500/10 text-yellow-400"
                                : "border-red-500/50 bg-red-500/10 text-red-400"
                          }
                        >
                          置信度 {rcaResult.rca.confidence}%
                        </Badge>
                      )}
                    </div>

                    {rcaResult.success && rcaResult.rca ? (
                      <>
                        {/* Summary card */}
                        <div className="text-sm bg-purple-500/10 border border-purple-500/20 rounded-lg px-4 py-3 leading-relaxed">
                          {rcaResult.rca.summary}
                        </div>

                        {/* Root causes */}
                        <div>
                          <div className="text-xs font-semibold text-muted-foreground mb-2 flex items-center gap-1.5 uppercase tracking-wider">
                            <AlertTriangle size={12} className="text-amber-500" /> 根因分析
                          </div>
                          <ul className="text-sm space-y-1.5">
                            {rcaResult.rca.rootCauses.map((c, i) => (
                              <li key={i} className="flex gap-2 bg-background/40 border border-border/40 rounded-md px-3 py-1.5">
                                <span className="text-purple-400 shrink-0 font-semibold">{i + 1}.</span>
                                <span className="leading-relaxed">{c}</span>
                              </li>
                            ))}
                          </ul>
                        </div>

                        {/* Evidence — 成功/失败区分 */}
                        <div>
                          <div className="text-xs font-semibold text-muted-foreground mb-2 flex items-center gap-1.5 uppercase tracking-wider">
                            <Terminal size={12} className="text-cyan-400" /> 关键证据
                            <span className="ml-auto text-[10px] text-muted-foreground font-normal normal-case tracking-normal">
                              {(rcaResult.rca.evidence ?? []).filter((e: any) => !e.summary.includes("失败")).length} 成功 · {(rcaResult.rca.evidence ?? []).filter((e: any) => e.summary.includes("失败")).length} 失败
                            </span>
                          </div>
                          <div className="space-y-1.5 max-h-60 overflow-y-auto pr-1">
                            {(rcaResult.rca.evidence ?? []).map((e: any, i: number) => {
                              const isFailed = e.summary.includes("失败") || e.summary.includes("error") || e.summary.includes("错误");
                              const raw = e.keyFindings?.[0] || "";
                              const shortOutput = raw.length > 200 ? raw.slice(0, 200) + "…" : raw;
                              return (
                                <details
                                  key={i}
                                  className={`text-xs rounded-md border transition-colors ${
                                    isFailed
                                      ? "bg-red-500/5 border-red-500/30"
                                      : "bg-background/60 border-border/40 hover:border-border"
                                  }`}
                                >
                                  <summary className="flex items-center gap-2 px-3 py-2 cursor-pointer select-none">
                                    <span className={`shrink-0 w-1.5 h-1.5 rounded-full ${isFailed ? "bg-red-500" : "bg-emerald-500"}`} />
                                    <code className={`font-mono ${isFailed ? "text-red-400" : "text-cyan-400"}`}>{e.tool}</code>
                                    <span className="text-muted-foreground truncate">{e.summary}</span>
                                    {isFailed && (
                                      <span className="ml-auto text-[10px] text-red-400 font-semibold">执行失败</span>
                                    )}
                                  </summary>
                                  {raw && (
                                    <pre className="m-0 mx-3 mb-2 p-2 bg-black/40 rounded text-[11px] text-green-300/80 font-mono whitespace-pre-wrap break-all max-h-40 overflow-auto leading-relaxed">
{shortOutput}
                                    </pre>
                                  )}
                                </details>
                              );
                            })}
                            {rcaResult.rca.evidence.length === 0 && (
                              <div className="text-xs text-muted-foreground italic px-2">无命令证据（可能设备离线或诊断阶段被跳过）</div>
                            )}
                          </div>
                        </div>

                        {/* Recommendations */}
                        <div>
                          <div className="text-xs font-semibold text-muted-foreground mb-2 flex items-center gap-1.5 uppercase tracking-wider">
                            <Lightbulb size={12} className="text-yellow-400" /> 处置建议
                          </div>
                          <div className="space-y-2">
                            {rcaResult.rca.recommendations.map((r, i) => (
                              <div
                                key={i}
                                className={`rounded-lg border p-3 ${
                                  r.priority === "immediate"
                                    ? "border-red-500/40 bg-red-500/5"
                                    : r.priority === "short_term"
                                      ? "border-yellow-500/40 bg-yellow-500/5"
                                      : "border-slate-500/40 bg-slate-500/5"
                                }`}
                              >
                                <div className="flex items-center justify-between mb-1.5">
                                  <span
                                    className={`text-[10px] uppercase font-bold tracking-wide ${
                                      r.priority === "immediate"
                                        ? "text-red-400"
                                        : r.priority === "short_term"
                                          ? "text-yellow-400"
                                          : "text-slate-400"
                                    }`}
                                  >
                                    {r.priority === "immediate"
                                      ? "🔥 立即执行"
                                      : r.priority === "short_term"
                                        ? "⚡ 短期建议"
                                        : "📋 长期优化"}
                                  </span>
                                  <span
                                    className={`text-[10px] px-1.5 py-0.5 rounded ${
                                      r.risk === "high"
                                        ? "text-red-400 bg-red-500/10"
                                        : r.risk === "medium"
                                          ? "text-yellow-400 bg-yellow-500/10"
                                          : "text-green-400 bg-green-500/10"
                                    }`}
                                  >
                                    风险 {r.risk === "low" ? "低" : r.risk === "medium" ? "中" : "高"}
                                  </span>
                                </div>
                                <div className="text-sm leading-relaxed">{r.action}</div>
                                {r.command && (
                                  <div className="mt-2 flex items-center gap-2">
                                    <Terminal size={11} className="text-muted-foreground shrink-0" />
                                    <code className="text-[11px] bg-black/40 rounded px-2 py-1 text-green-300 font-mono break-all">
                                      {r.command}
                                    </code>
                                  </div>
                                )}
                                {r.note && (
                                  <div className="mt-1.5 text-[11px] text-muted-foreground leading-relaxed">
                                    💡 {r.note}
                                  </div>
                                )}
                              </div>
                            ))}
                          </div>
                        </div>
                      </>
                    ) : (
                      <div className="text-sm text-red-400 bg-red-500/10 border border-red-500/30 rounded-md px-3 py-2">
                        AI 分析失败: {rcaResult.error || "未知错误"}
                      </div>
                    )}

                    {/* Footer stats */}
                    <div className="flex items-center justify-between pt-3 border-t border-border/40 text-[11px] text-muted-foreground">
                      <span>耗时 {(rcaResult.durationMs / 1000).toFixed(1)}s</span>
                      <span>{(rcaResult.toolInvocations ?? []).filter((i: any) => i.ok).length} / {(rcaResult.toolInvocations ?? []).length} 工具调用成功</span>
                    </div>
                  </div>
                )}
              </div>

              <DialogFooter className="shrink-0 flex justify-between">
                <div className="flex gap-2">
                  <Button
                    variant="outline"
                    onClick={() => setDetailOpen(false)}
                  >
                    关闭
                  </Button>
                  {selectedAlert && (
                    <Button
                      variant={rcaLoading ? "outline" : "secondary"}
                      onClick={() => triggerRCA(selectedAlert)}
                      disabled={rcaLoading}
                      className="border-purple-500/40 text-purple-500 hover:bg-purple-500/10 hover:text-purple-400"
                    >
                      {rcaLoading ? (
                        <Loader2 size={14} className="mr-2 animate-spin" />
                      ) : (
                        <Bot size={14} className="mr-2" />
                      )}
                      {rcaLoading ? "分析中..." : "AI 根因分析"}
                    </Button>
                  )}
                </div>
                <div className="flex gap-2">
                  {selectedAlert.status === "active" && (
                    <Button variant="outline" onClick={handleAcknowledge}>
                      <MessageSquare size={14} className="mr-2" />
                      确认
                    </Button>
                  )}
                  {(selectedAlert.status === "active" ||
                    selectedAlert.status === "acknowledged") && (
                    <Button variant="outline" onClick={handleResolve}>
                      <CheckCircle size={14} className="mr-2" />
                      恢复
                    </Button>
                  )}
                  {selectedAlert.status !== "closed" && (
                    <Button variant="destructive" onClick={handleClose}>
                      <XCircle size={14} className="mr-2" />
                      关闭
                    </Button>
                  )}
                </div>
              </DialogFooter>
            </>
          )}
        </DialogContent>
      </Dialog>

      {/* 关闭备注弹窗 */}
      <Dialog open={noteDialogOpen} onOpenChange={setNoteDialogOpen}>
        <DialogContent className="max-w-md">
          <DialogHeader>
            <DialogTitle>关闭告警</DialogTitle>
          </DialogHeader>
          <div className="space-y-3 py-2">
            <Label>关闭原因（可选）</Label>
            <Textarea
              placeholder="请输入关闭原因或处理备注..."
              value={noteText}
              onChange={(e) => setNoteText(e.target.value)}
              rows={3}
            />
          </div>
          <DialogFooter>
            <Button variant="outline" onClick={() => setNoteDialogOpen(false)}>
              取消
            </Button>
            <Button variant="destructive" onClick={handleCloseConfirm}>
              确认关闭
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>
    </div>
  );
}

export default AlertCenterPage;