// 主机详情弹窗：展示历史指标趋势图 + 端口发现列表（从 AgentMonitor.tsx 提取） // Logan.Li
import { useState, useEffect } from 'react';
import { agentApi } from '@/api';
import { isOnline, timeAgo, asList } from './agentUtils';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';
import { Server, Activity, Network, Terminal, Loader2 } from 'lucide-react';
import {
  AreaChart,
  Area,
  XAxis,
  YAxis,
  CartesianGrid,
  Tooltip,
  ResponsiveContainer,
} from 'recharts';
import type { JsonData } from '@/types/common';

export function HostDetailDialog({
  host,
  onClose,
  onCommand,
}: {
  host?: JsonData;
  onClose: () => void;
  onCommand: (hostname: string) => void;
}) {
  const [history, setHistory] = useState<JsonData[]>([]);
  const [loading, setLoading] = useState(false);
  const [hours, setHours] = useState(1);

  useEffect(() => {
    if (!host) return;
    let active = true;
    setLoading(true);
    agentApi
      .getHistory(host.hostname, hours)
      .then((data) => {
        if (active) setHistory(asList(data));
      })
      .catch(() => { if (active) setHistory([]); })
      .finally(() => { if (active) setLoading(false); });
    return () => { active = false; };
  }, [host, hours]);

  if (!host) return null;

  const online = isOnline(host.last_report || host.last_reported_at || host.updated_at);
  const ports: JsonData[] = Array.isArray(host.ports) ? host.ports : [];

  const chartData = history.map((h) => ({
    time: new Date(h.timestamp || h.time || h.created_at || Date.now()).toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' }),
    cpu: Number(h.cpu_percent ?? h.cpu ?? 0),
    mem: Number(h.mem_percent ?? h.mem ?? 0),
    disk: Number(h.disk_percent ?? h.disk ?? 0),
  }));

  return (
    <Dialog open={!!host} onOpenChange={(v) => { if (!v) onClose(); }}>
      <DialogContent className="max-w-3xl bg-slate-900 border-slate-800 text-slate-100">
        <DialogHeader>
          <DialogTitle className="text-slate-100 flex items-center gap-2">
            <Server className="h-5 w-5 text-blue-400" />
            {host.hostname}
            {online ? (
              <Badge className="bg-emerald-500/15 text-emerald-400 border border-emerald-500/30">在线</Badge>
            ) : (
              <Badge className="bg-red-500/15 text-red-400 border border-red-500/30">离线</Badge>
            )}
          </DialogTitle>
          <DialogDescription className="sr-only">查看主机详情和指标趋势</DialogDescription>
        </DialogHeader>

        <div className="space-y-4">
          {/* 基本信息 */}
          <div className="grid grid-cols-2 md:grid-cols-4 gap-3 text-sm">
            <InfoCell label="IP 地址" value={host.ip || '--'} />
            <InfoCell label="操作系统" value={host.os || host.platform || '--'} />
            <InfoCell label="最后上报" value={timeAgo(host.last_report || host.last_reported_at || host.updated_at)} />
            <InfoCell label="端口数" value={String(ports.length)} />
          </div>

          {/* 趋势图 */}
          <div>
            <div className="flex items-center justify-between mb-2">
              <span className="text-sm font-medium text-slate-200 flex items-center gap-1.5">
                <Activity className="h-4 w-4 text-blue-400" />
                指标趋势
              </span>
              <Select value={String(hours)} onValueChange={(v) => setHours(Number(v))}>
                <SelectTrigger size="sm" className="h-7 w-28 bg-slate-800 border-slate-700 text-slate-300 text-xs">
                  <SelectValue />
                </SelectTrigger>
                <SelectContent className="bg-slate-800 border-slate-700 text-slate-200">
                  <SelectItem value="1">最近 1 小时</SelectItem>
                  <SelectItem value="6">最近 6 小时</SelectItem>
                  <SelectItem value="24">最近 24 小时</SelectItem>
                </SelectContent>
              </Select>
            </div>
            <div className="h-56 rounded-lg bg-slate-950 border border-slate-800 p-3">
              {loading ? (
                <div className="h-full flex items-center justify-center">
                  <Loader2 className="h-5 w-5 animate-spin text-slate-500" />
                </div>
              ) : chartData.length === 0 ? (
                <div className="h-full flex items-center justify-center text-sm text-slate-500">暂无历史数据</div>
              ) : (
                <ResponsiveContainer width="100%" height="100%">
                  <AreaChart data={chartData} margin={{ top: 5, right: 5, bottom: 0, left: -20 }}>
                    <defs>
                      <linearGradient id="gCpu" x1="0" y1="0" x2="0" y2="1">
                        <stop offset="5%" stopColor="#3b82f6" stopOpacity={0.4} />
                        <stop offset="95%" stopColor="#3b82f6" stopOpacity={0} />
                      </linearGradient>
                      <linearGradient id="gMem" x1="0" y1="0" x2="0" y2="1">
                        <stop offset="5%" stopColor="#10b981" stopOpacity={0.4} />
                        <stop offset="95%" stopColor="#10b981" stopOpacity={0} />
                      </linearGradient>
                      <linearGradient id="gDisk" x1="0" y1="0" x2="0" y2="1">
                        <stop offset="5%" stopColor="#f59e0b" stopOpacity={0.4} />
                        <stop offset="95%" stopColor="#f59e0b" stopOpacity={0} />
                      </linearGradient>
                    </defs>
                    <CartesianGrid strokeDasharray="3 3" stroke="#1e293b" />
                    <XAxis dataKey="time" stroke="#475569" fontSize={11} />
                    <YAxis stroke="#475569" fontSize={11} domain={[0, 100]} />
                    <Tooltip
                      contentStyle={{ backgroundColor: '#0f172a', border: '1px solid #1e293b', borderRadius: '6px', color: '#f8fafc', fontSize: '12px' }}
                    />
                    <Area type="monotone" dataKey="cpu" stroke="#3b82f6" fill="url(#gCpu)" name="CPU" />
                    <Area type="monotone" dataKey="mem" stroke="#10b981" fill="url(#gMem)" name="内存" />
                    <Area type="monotone" dataKey="disk" stroke="#f59e0b" fill="url(#gDisk)" name="磁盘" />
                  </AreaChart>
                </ResponsiveContainer>
              )}
            </div>
          </div>

          {/* 端口列表 */}
          <div>
            <span className="text-sm font-medium text-slate-200 flex items-center gap-1.5 mb-2">
              <Network className="h-4 w-4 text-blue-400" />
              端口发现 ({ports.length})
            </span>
            {ports.length === 0 ? (
              <p className="text-xs text-slate-500">暂无端口数据</p>
            ) : (
              <div className="flex flex-wrap gap-1.5 max-h-32 overflow-y-auto">
                {ports.map((p, idx) => (
                  <Badge key={idx} className="bg-slate-800 text-slate-300 border border-slate-700">
                    <Network className="h-3 w-3 mr-1" />
                    {p.port ?? p}
                  </Badge>
                ))}
              </div>
            )}
          </div>
        </div>

        <DialogFooter className="gap-2">
          <Button
            onClick={() => onCommand(host.hostname)}
            className="bg-blue-600 hover:bg-blue-700 text-white"
          >
            <Terminal className="h-4 w-4 mr-1.5" />
            远程命令
          </Button>
          <Button variant="outline" onClick={onClose} className="border-slate-700 text-slate-300">
            关闭
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}

function InfoCell({ label, value }: { label: string; value: string }) {
  return (
    <div className="bg-slate-950 border border-slate-800 rounded-lg px-3 py-2">
      <div className="text-xs text-slate-500">{label}</div>
      <div className="text-sm text-slate-200 font-medium truncate">{value}</div>
    </div>
  );
}

export default HostDetailDialog;