import { useState, useEffect, useCallback } from 'react';
import {
  
  Plus,
  Pencil,
  Trash2,
  RefreshCw,
  Key,
  Shield,
  Globe,
  Search,
  Lock,
  Eye,
  EyeOff,
  Copy,
  Server,
  Container,
  Database,
  FileText,
  Cloud,
  Clock,
  AlertTriangle,
  CheckCircle2,
  XCircle,
  Zap,
} from 'lucide-react';

import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Badge } from '@/components/ui/badge';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, DialogFooter } from '@/components/ui/dialog';

import { toast } from 'sonner';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { credentialApi } from '@/services/api';

// ────── Types ──────

interface Credential {
  id: number;
  name: string;
  variable_name: string;
  secret_type: SecretType;
  summary: string;
  tags: string[];
  description: string;
  expires_at: string | null;
  is_active: boolean;
  env_prefix: string;
  created_at: string;
  updated_at: string;
}

type SecretType = 'ssh' | 'docker' | 'tls' | 'aksk' | 'database' | 'api' | 'generic';

const TYPE_CONFIG: Record<SecretType, { label: string; icon: typeof Key; color: string; desc: string }> = {
  ssh:      { label: 'SSH 密钥', icon: Server, color: 'text-amber-400', desc: 'SSH 私钥/公钥/密码' },
  docker:   { label: 'Docker 凭证', icon: Container, color: 'text-cyan-400', desc: 'Docker Registry 登录凭据' },
  tls:      { label: 'TLS 证书', icon: Shield, color: 'text-green-400', desc: 'TLS/SSL 证书与私钥' },
  aksk:     { label: 'AKSK 密钥', icon: Cloud, color: 'text-purple-400', desc: '云服务 AccessKey/SecretKey' },
  database: { label: '数据库凭证', icon: Database, color: 'text-blue-400', desc: '数据库连接信息' },
  api:      { label: 'API 密钥', icon: Globe, color: 'text-orange-400', desc: 'API Token/Key + 端点' },
  generic:  { label: '通用凭证', icon: FileText, color: 'text-gray-400', desc: '自定义 Key/Value 键值对' },
};

const TYPE_BADGE_CLASS: Record<SecretType, string> = {
  ssh: 'bg-amber-500/20 text-amber-400 border-amber-500/30',
  docker: 'bg-cyan-500/20 text-cyan-400 border-cyan-500/30',
  tls: 'bg-green-500/20 text-green-400 border-green-500/30',
  aksk: 'bg-purple-500/20 text-purple-400 border-purple-500/30',
  database: 'bg-blue-500/20 text-blue-400 border-blue-500/30',
  api: 'bg-orange-500/20 text-orange-400 border-orange-500/30',
  generic: 'bg-gray-500/20 text-gray-400 border-gray-500/30',
};

// ────── Detail Dialog ──────

function CredDetailDialog({ open, onClose, credId }: { open: boolean; onClose: () => void; credId: number | null }) {
  const [detail, setDetail] = useState<any>(null);
  const [loading, setLoading] = useState(false);
  const [showMap, setShowMap] = useState<Record<string, boolean>>({});

  useEffect(() => {
    if (!credId || !open) return;
    setLoading(true);
    credentialApi.get(credId).then(( res: any) => {
      setDetail(res);
    }).catch(() => toast.error('加载详情失败')).finally(() => setLoading(false));
  }, [credId, open]);

  if (!open || !credId) return null;

  const toggleShow = (key: string) => setShowMap(prev => ({ ...prev, [key]: !prev[key] }));
  const copyValue = (val: string) => { navigator.clipboard.writeText(val); toast.success('已复制'); };

  const st = detail?.secret_type as SecretType;
  const cfg = TYPE_CONFIG[st];
  const content = detail?.content || {};

  const Field = ({ label, value, sensitive, fieldKey }: { label: string; value: any; sensitive?: boolean; fieldKey?: string }) => {
    if (value === undefined || value === null || value === '') return null;
    const isLong = typeof value === 'string' && value.length > 80;
    const show = fieldKey ? showMap[fieldKey] : false;
    return (
      <div className="mb-3">
        <div className="flex items-center gap-2 text-xs text-[var(--dg-text-muted)] mb-1">
          <Lock className="h-3 w-3" />{label}
        </div>
        <div className="flex gap-1">
          {isLong ? (
            <textarea readOnly value={sensitive && !show ? '••••••••' : value}
              className="flex-1 rounded-md bg-[var(--dg-bg-tertiary)] border border-[var(--dg-border)] text-[var(--dg-text-primary)] p-2 text-xs font-mono resize-none"
              rows={4} />
          ) : (
            <Input readOnly value={sensitive && !show ? '••••••••' : String(value)}
              className="flex-1 bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono text-xs" />
          )}
          <div className="flex flex-col gap-0.5 shrink-0">
            {sensitive && (
              <Button variant="ghost" size="icon" className="h-7 w-7" onClick={() => toggleShow(fieldKey!)}>
                {show ? <EyeOff className="h-3 w-3" /> : <Eye className="h-3 w-3" />}
              </Button>
            )}
            <Button variant="ghost" size="icon" className="h-7 w-7" onClick={() => copyValue(String(value))}>
              <Copy className="h-3 w-3" />
            </Button>
          </div>
        </div>
      </div>
    );
  };

  return (
    <Dialog open={open} onOpenChange={onClose}>
      <DialogContent className="sm:max-w-[680px] max-h-[85vh] overflow-y-auto bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
        <DialogHeader>
          <DialogTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
            {cfg ? <cfg.icon className={`h-5 w-5 ${cfg.color}`} /> : <Key className="h-5 w-5 text-[var(--dg-text-muted)]" />}
            凭据详情
          </DialogTitle>
        </DialogHeader>
        {loading ? (
          <div className="text-center py-8 text-[var(--dg-text-muted)]">加载中...</div>
        ) : detail ? (
          <div className="space-y-4">
            {/* Basic info */}
            <div className="grid grid-cols-2 gap-3 text-sm">
              <div><span className="text-[var(--dg-text-muted)]">名称：</span><span className="text-[var(--dg-text-primary)] font-medium">{detail.name}</span></div>
              <div><span className="text-[var(--dg-text-muted)]">类型：</span>
                <Badge variant="outline" className={`text-xs ml-1 ${TYPE_BADGE_CLASS[st] || ''}`}>{cfg?.label || st}</Badge>
              </div>
              <div><span className="text-[var(--dg-text-muted)]">状态：</span>
                {detail.is_active
                  ? <Badge className="bg-green-500/20 text-green-400 text-xs ml-1"><CheckCircle2 className="h-3 w-3 mr-0.5" />启用</Badge>
                  : <Badge className="bg-red-500/20 text-red-400 text-xs ml-1"><XCircle className="h-3 w-3 mr-0.5" />禁用</Badge>}
                {detail.expires_at && new Date(detail.expires_at) < new Date() && (
                  <Badge className="bg-yellow-500/20 text-yellow-400 text-xs ml-1"><AlertTriangle className="h-3 w-3 mr-0.5" />已过期</Badge>
                )}
              </div>
              <div className="col-span-2 cursor-pointer" onClick={() => copyValue(detail.env_prefix || '')}>
                <span className="text-[var(--dg-text-muted)]">引用ID：</span>
                <code className="text-[var(--dg-blue)] font-mono text-xs">{detail.env_prefix || '无'}</code>
                <Copy className="h-3 w-3 inline ml-1 text-[var(--dg-text-muted)]" />
              </div>
              {detail.tags?.length > 0 && (
                <div className="col-span-2">
                  <span className="text-[var(--dg-text-muted)]">标签：</span>
                  {detail.tags.map((t: string) => (
                    <Badge key={t} variant="outline" className="text-xs ml-1 border-[var(--dg-border)]">{t}</Badge>
                  ))}
                </div>
              )}
              <div className="col-span-2"><span className="text-[var(--dg-text-muted)]">描述：</span><span className="text-[var(--dg-text-secondary)]">{detail.description || '无'}</span></div>
              <div><span className="text-[var(--dg-text-muted)]">创建：</span><span className="text-[var(--dg-text-secondary)] text-xs">{new Date(detail.created_at).toLocaleString()}</span></div>
              <div><span className="text-[var(--dg-text-muted)]">更新：</span><span className="text-[var(--dg-text-secondary)] text-xs">{new Date(detail.updated_at).toLocaleString()}</span></div>
            </div>

            {/* Secret data */}
            <div className="border-t border-[var(--dg-border)] pt-3">
              <div className="flex items-center gap-2 text-sm text-[var(--dg-text-primary)] font-medium mb-3">
                <Key className="h-4 w-4 text-yellow-500" />密钥数据
              </div>
              <div className="p-3 rounded-md bg-yellow-500/5 border border-yellow-500/20 mb-3">
                <p className="text-xs text-yellow-400/80">以下内容包含敏感信息，请妥善保管，不要泄露给他人。</p>
              </div>

              {st === 'ssh' && <>
                <Field label="SSH 用户" value={content.ssh_user} />
                <Field label="SSH 端口" value={content.ssh_port} />
                <Field label="SSH 密码" value={content.password} sensitive fieldKey="ssh_password" />
                <Field label="私钥" value={content.private_key} sensitive fieldKey="ssh_private_key" />
                <Field label="公钥" value={content.public_key} fieldKey="ssh_public_key" />
              </>}
              {st === 'docker' && <>
                <Field label="Registry 地址" value={content.server} />
                <Field label="用户名" value={content.username} />
                <Field label="密码" value={content.password} sensitive fieldKey="docker_password" />
              </>}
              {st === 'tls' && <>
                <Field label="证书" value={content.cert} sensitive fieldKey="tls_cert" />
                <Field label="私钥" value={content.key} sensitive fieldKey="tls_key" />
                <Field label="CA 证书" value={content.ca} sensitive fieldKey="tls_ca" />
              </>}
              {st === 'aksk' && <>
                <Field label="Access Key ID" value={content.access_key} />
                <Field label="Secret Access Key" value={content.secret_key} sensitive fieldKey="aksk_secret_key" />
              </>}
              {st === 'database' && <>
                <Field label="数据库类型" value={(content.db_type || '').toUpperCase()} />
                <Field label="主机" value={content.host} />
                <Field label="端口" value={content.port} />
                <Field label="数据库名" value={content.db_name} />
                <Field label="用户名" value={content.username} />
                <Field label="密码" value={content.password} sensitive fieldKey="db_password" />
              </>}
              {st === 'api' && <>
                <Field label="API Key" value={content.api_key} sensitive fieldKey="api_key" />
                <Field label="API 端点" value={content.endpoint} />
              </>}
              {st === 'generic' && <>
                <Field label="Key" value={content.generic_key} />
                <Field label="Value" value={content.generic_value} sensitive fieldKey="generic_value" />
              </>}
            </div>

            {/* Usage hint */}
            <div className="border-t border-[var(--dg-border)] pt-3">
              <div className="text-xs text-[var(--dg-text-muted)] mb-2">在流水线/脚本中引用此凭据：</div>
              <code className="text-xs bg-[var(--dg-bg-tertiary)] px-3 py-1.5 rounded block text-[var(--dg-blue)]">
                {'${'}{detail.variable_name || detail.name.toUpperCase().replace(/[^A-Z0-9]/g, '_')}{'}'}
              </code>
            </div>
          </div>
        ) : (
          <div className="text-center py-8 text-[var(--dg-text-muted)]">未找到凭据数据</div>
        )}
        <DialogFooter>
          <Button variant="outline" onClick={onClose}>关闭</Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}

// ────── Form Dialog ──────

function CredFormDialog({ open, onClose, onSaved, editData }: {
  open: boolean; onClose: () => void; onSaved: () => void; editData: Credential | null;
}) {
  const isEdit = !!editData;
  const [name, setName] = useState('');
  const [varName, setVarName] = useState('');
  const [secretType, setSecretType] = useState<SecretType>('ssh');
  const [description, setDescription] = useState('');
  const [tags, setTags] = useState('');
  const [isActive, setIsActive] = useState(true);
  const [submitting, setSubmitting] = useState(false);
  const [showMap, setShowMap] = useState<Record<string, boolean>>({});

  // Type-specific fields
  // SSH
  const [sshUser, setSshUser] = useState('root');
  const [sshPort, setSshPort] = useState('22');
  const [sshPassword, setSshPassword] = useState('');
  const [sshPrivateKey, setSshPrivateKey] = useState('');
  const [sshPublicKey, setSshPublicKey] = useState('');
  // Docker
  const [dockerServer, setDockerServer] = useState('');
  const [dockerUsername, setDockerUsername] = useState('');
  const [dockerPassword, setDockerPassword] = useState('');
  // TLS
  const [tlsCert, setTlsCert] = useState('');
  const [tlsKey, setTlsKey] = useState('');
  const [tlsCa, setTlsCa] = useState('');
  // AKSK
  const [, setAkskProvider] = useState('');
  const [akskAccessKey, setAkskAccessKey] = useState('');
  const [akskSecretKey, setAkskSecretKey] = useState('');
  const [, setAkskRegion] = useState('');
  // Database
  const [dbType, setDbType] = useState('mysql');
  const [dbHost, setDbHost] = useState('');
  const [dbPort, setDbPort] = useState('3306');
  const [dbName, setDbName] = useState('');
  const [dbUsername, setDbUsername] = useState('');
  const [dbPassword, setDbPassword] = useState('');
  // API
  const [apiKey, setApiKey] = useState('');
  const [apiEndpoint, setApiEndpoint] = useState('');
  // Generic
  const [genericKey, setGenericKey] = useState('');
  const [genericValue, setGenericValue] = useState('');

  useEffect(() => {
    if (!open) return;
    if (editData) {
      setName(editData.name);
      setVarName(editData.variable_name || '');
      setSecretType(editData.secret_type);
      setDescription(editData.description || '');
      setTags((editData.tags || []).join(', '));
      setIsActive(editData.is_active);
      // Don't prefill type-specific fields — user can edit selectively
      setSshUser(''); setSshPort('22'); setSshPassword(''); setSshPrivateKey(''); setSshPublicKey('');
      setDockerServer(''); setDockerUsername(''); setDockerPassword('');
      setTlsCert(''); setTlsKey(''); setTlsCa('');
      setAkskProvider(''); setAkskAccessKey(''); setAkskSecretKey(''); setAkskRegion('');
      setDbType('mysql'); setDbHost(''); setDbPort('3306'); setDbName(''); setDbUsername(''); setDbPassword('');
      setApiKey(''); setApiEndpoint('');
      setGenericKey(''); setGenericValue('');
    } else {
      setName(''); setVarName(''); setSecretType('ssh'); setDescription(''); setTags(''); setIsActive(true);
      setSshUser('root'); setSshPort('22'); setSshPassword(''); setSshPrivateKey(''); setSshPublicKey('');
      setDockerServer(''); setDockerUsername(''); setDockerPassword('');
      setTlsCert(''); setTlsKey(''); setTlsCa('');
      setAkskProvider(''); setAkskAccessKey(''); setAkskSecretKey(''); setAkskRegion('');
      setDbType('mysql'); setDbHost(''); setDbPort('3306'); setDbName(''); setDbUsername(''); setDbPassword('');
      setApiKey(''); setApiEndpoint('');
      setGenericKey(''); setGenericValue('');
    }
    setShowMap({});
  }, [editData, open]);

  const toggleShow = (key: string) => setShowMap(prev => ({ ...prev, [key]: !prev[key] }));

  const handleSubmit = async () => {
    if (!name.trim()) { toast.error('请填写凭据名称'); return; }
    setSubmitting(true);
    try {
      const payload: Record<string, any> = {
        name: name.trim(),
        secret_type: secretType,
        description: description.trim(),
        tags: tags.split(',').map(t => t.trim()).filter(Boolean),
        is_active: isActive,
      };
      if (varName.trim()) payload.variable_name = varName.trim();

      // Type-specific
      if (secretType === 'ssh') {
        if (sshUser.trim()) payload.ssh_user = sshUser.trim();
        if (sshPort) payload.ssh_port = parseInt(sshPort) || 22;
        if (sshPassword.trim()) payload.ssh_password = sshPassword.trim();
        if (sshPrivateKey.trim()) payload.ssh_private_key = sshPrivateKey.trim();
        if (sshPublicKey.trim()) payload.ssh_public_key = sshPublicKey.trim();
      } else if (secretType === 'docker') {
        if (dockerServer.trim()) payload.docker_server = dockerServer.trim();
        if (dockerUsername.trim()) payload.docker_username = dockerUsername.trim();
        if (dockerPassword.trim()) payload.docker_password = dockerPassword.trim();
      } else if (secretType === 'tls') {
        if (tlsCert.trim()) payload.tls_cert = tlsCert.trim();
        if (tlsKey.trim()) payload.tls_key = tlsKey.trim();
        if (tlsCa.trim()) payload.tls_ca = tlsCa.trim();
      } else if (secretType === 'aksk') {
        if (akskAccessKey.trim()) payload.aksk_access_key = akskAccessKey.trim();
        if (akskSecretKey.trim()) payload.aksk_secret_key = akskSecretKey.trim();
      } else if (secretType === 'database') {
        if (dbType.trim()) payload.db_type = dbType.trim();
        if (dbHost.trim()) payload.db_host = dbHost.trim();
        if (dbPort) payload.db_port = parseInt(dbPort) || 3306;
        if (dbName.trim()) payload.db_name = dbName.trim();
        if (dbUsername.trim()) payload.db_username = dbUsername.trim();
        if (dbPassword.trim()) payload.db_password = dbPassword.trim();
      } else if (secretType === 'api') {
        if (apiKey.trim()) payload.api_key = apiKey.trim();
        if (apiEndpoint.trim()) payload.api_endpoint = apiEndpoint.trim();
      } else if (secretType === 'generic') {
        if (genericKey.trim()) payload.generic_key = genericKey.trim();
        if (genericValue.trim()) payload.generic_value = genericValue.trim();
      }

      if (isEdit) {
        await credentialApi.update(editData!.id, payload);
        toast.success('已更新');
      } else {
        await credentialApi.create(payload);
        toast.success('已创建');
      }
      onSaved();
      onClose();
    } catch (e: any) {
      toast.error(e?.response?.data?.message || '操作失败');
    } finally { setSubmitting(false); }
  };

  const FieldWithToggle = ({ label, value, onChange, placeholder, fieldKey, required, isLong }: {
    label: string; value: string; onChange: (v: string) => void; placeholder: string;
    fieldKey: string; required?: boolean; isLong?: boolean;
  }) => {
    const show = showMap[fieldKey];
    return (
      <div className="space-y-1">
        <Label className="text-[var(--dg-text-secondary)] text-xs">{label}{required && !isEdit && <span className="text-red-400"> *</span>}</Label>
        <div className="relative">
          {isLong ? (
            <textarea value={value} onChange={e => onChange(e.target.value)}
              placeholder={placeholder} rows={5}
              className="w-full rounded-md bg-[var(--dg-bg-tertiary)] border border-[var(--dg-border)] text-[var(--dg-text-primary)] p-2 text-sm font-mono placeholder:text-[var(--dg-text-muted)]" />
          ) : (
            <Input value={value} onChange={e => onChange(e.target.value)}
              type={show ? 'text' : 'password'} placeholder={placeholder}
              className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] pr-10 font-mono text-sm" />
          )}
          <button type="button" onClick={() => toggleShow(fieldKey)}
            className="absolute right-2 top-1/2 -translate-y-1/2 text-[var(--dg-text-muted)] hover:text-[var(--dg-text-primary)] text-xs">
            {show ? <EyeOff className="h-3.5 w-3.5" /> : <Eye className="h-3.5 w-3.5" />}
          </button>
        </div>
      </div>
    );
  };

  const TI = TYPE_CONFIG[secretType];
  const TIicon = TI?.icon || Key;

  return (
    <Dialog open={open} onOpenChange={onClose}>
      <DialogContent className="sm:max-w-[620px] max-h-[90vh] overflow-y-auto bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
        <DialogHeader>
          <DialogTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
            <TIicon className={`h-5 w-5 ${TI?.color || ''}`} />
            {isEdit ? '编辑凭据' : '新增凭据'}
          </DialogTitle>
          <DialogDescription className="text-[var(--dg-text-muted)] text-xs">
            {TI?.desc || '管理敏感凭据信息'}
          </DialogDescription>
        </DialogHeader>
        <div className="space-y-4 py-2">
          {/* Basic */}
          <div className="border-b border-[var(--dg-border)] pb-3">
            <div className="text-xs font-medium text-[var(--dg-text-secondary)] mb-2">基本信息</div>
            <div className="grid grid-cols-2 gap-3">
              <div className="space-y-1">
                <Label className="text-[var(--dg-text-secondary)] text-xs">凭据名称 <span className="text-red-400">*</span></Label>
                <Input value={name} onChange={e => setName(e.target.value)} placeholder="如：生产环境 SSH"
                  className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
              </div>
              <div className="space-y-1">
                <Label className="text-[var(--dg-text-secondary)] text-xs">变量别名</Label>
                <Input value={varName} onChange={e => setVarName(e.target.value)} placeholder="如：MYSQL_PROD"
                  className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono text-sm" />
              </div>
              <div className="space-y-1">
                <Label className="text-[var(--dg-text-secondary)] text-xs">类型{!isEdit && <span className="text-red-400"> *</span>}</Label>
                <Select value={secretType} onValueChange={(v) => setSecretType(v as SecretType)} disabled={isEdit}>
                  <SelectTrigger className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]">
                    <SelectValue />
                  </SelectTrigger>
                  <SelectContent className="max-h-[300px]">
                    {(Object.entries(TYPE_CONFIG) as [SecretType, typeof TYPE_CONFIG[SecretType]][]).map(([k, v]) => (
                      <SelectItem key={k} value={k}>
                        <span className="flex items-center gap-2"><v.icon className="h-4 w-4" />{v.label}</span>
                      </SelectItem>
                    ))}
                  </SelectContent>
                </Select>
              </div>
              <div className="space-y-1">
                <Label className="text-[var(--dg-text-secondary)] text-xs">标签</Label>
                <Input value={tags} onChange={e => setTags(e.target.value)} placeholder="生产环境, 阿里云"
                  className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
              </div>
            </div>
            <div className="mt-2 space-y-1">
              <Label className="text-[var(--dg-text-secondary)] text-xs">描述</Label>
              <Input value={description} onChange={e => setDescription(e.target.value)} placeholder="可选备注信息"
                className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
            </div>
          </div>

          {/* Type-specific fields */}
          <div>
            <div className="text-xs font-medium text-[var(--dg-text-secondary)] mb-2 flex items-center gap-2">
              <TIicon className="h-3.5 w-3.5" />{TI?.label || secretType} 配置
              {isEdit && <span className="text-[var(--dg-text-muted)]">（仅填写需要修改的字段）</span>}
            </div>

            {secretType === 'ssh' && (
              <div className="grid grid-cols-2 gap-3">
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">SSH 用户</Label>
                  <Input value={sshUser} onChange={e => setSshUser(e.target.value)} placeholder="root"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
                </div>
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">SSH 端口</Label>
                  <Input value={sshPort} onChange={e => setSshPort(e.target.value)} placeholder="22" type="number"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
                </div>
                <div className="col-span-2">
                  <FieldWithToggle label="SSH 密码" value={sshPassword} onChange={setSshPassword}
                    placeholder="密码（或留空用密钥）" fieldKey="ssh_pwd" />
                </div>
                <div className="col-span-2">
                  <FieldWithToggle label="私钥内容" value={sshPrivateKey} onChange={setSshPrivateKey}
                    placeholder="粘贴 SSH 私钥..." fieldKey="ssh_pk" isLong />
                </div>
                <div className="col-span-2">
                  <FieldWithToggle label="公钥内容" value={sshPublicKey} onChange={setSshPublicKey}
                    placeholder="粘贴 SSH 公钥..." fieldKey="ssh_pub" isLong />
                </div>
              </div>
            )}

            {secretType === 'docker' && (
              <div className="grid grid-cols-2 gap-3">
                <div className="col-span-2 space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">Registry 地址 <span className="text-red-400">*</span></Label>
                  <Input value={dockerServer} onChange={e => setDockerServer(e.target.value)} placeholder="registry.example.com"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono" />
                </div>
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">用户名</Label>
                  <Input value={dockerUsername} onChange={e => setDockerUsername(e.target.value)} placeholder="admin"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
                </div>
                <div><FieldWithToggle label="密码" value={dockerPassword} onChange={setDockerPassword}
                  placeholder="Registry 密码" fieldKey="docker_pwd" required /></div>
              </div>
            )}

            {secretType === 'tls' && (
              <div className="space-y-3">
                <FieldWithToggle label="证书 (PEM)" value={tlsCert} onChange={setTlsCert}
                  placeholder="-----BEGIN CERTIFICATE-----" fieldKey="tls_cert" isLong required />
                <FieldWithToggle label="私钥 (PEM)" value={tlsKey} onChange={setTlsKey}
                  placeholder="-----BEGIN PRIVATE KEY-----" fieldKey="tls_key" isLong required />
                <FieldWithToggle label="CA 证书" value={tlsCa} onChange={setTlsCa}
                  placeholder="CA 证书内容..." fieldKey="tls_ca" isLong />
              </div>
            )}

            {secretType === 'aksk' && (
              <div className="grid grid-cols-2 gap-3">
                <div className="col-span-2 space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">Access Key ID <span className="text-red-400">*</span></Label>
                  <Input value={akskAccessKey} onChange={e => setAkskAccessKey(e.target.value)} placeholder="AKIDxxxx..."
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono" />
                </div>
                <div className="col-span-2">
                  <FieldWithToggle label="Secret Access Key" value={akskSecretKey} onChange={setAkskSecretKey}
                    placeholder="输入 Secret Key" fieldKey="aksk_sk" required />
                </div>
              </div>
            )}

            {secretType === 'database' && (
              <div className="grid grid-cols-3 gap-3">
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">数据库类型</Label>
                  <Select value={dbType} onValueChange={setDbType}>
                    <SelectTrigger className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]">
                      <SelectValue />
                    </SelectTrigger>
                    <SelectContent>
                      <SelectItem value="mysql">MySQL</SelectItem>
                      <SelectItem value="postgres">PostgreSQL</SelectItem>
                      <SelectItem value="mongodb">MongoDB</SelectItem>
                      <SelectItem value="redis">Redis</SelectItem>
                      <SelectItem value="mssql">SQL Server</SelectItem>
                      <SelectItem value="oracle">Oracle</SelectItem>
                    </SelectContent>
                  </Select>
                </div>
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">主机 <span className="text-red-400">*</span></Label>
                  <Input value={dbHost} onChange={e => setDbHost(e.target.value)} placeholder="10.0.0.1"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono" />
                </div>
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">端口</Label>
                  <Input value={dbPort} onChange={e => setDbPort(e.target.value)} placeholder="3306" type="number"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
                </div>
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">数据库名</Label>
                  <Input value={dbName} onChange={e => setDbName(e.target.value)} placeholder="aiops"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
                </div>
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">用户名</Label>
                  <Input value={dbUsername} onChange={e => setDbUsername(e.target.value)} placeholder="root"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]" />
                </div>
                <div><FieldWithToggle label="密码" value={dbPassword} onChange={setDbPassword}
                  placeholder="数据库密码" fieldKey="db_pwd" /></div>
              </div>
            )}

            {secretType === 'api' && (
              <div className="space-y-3">
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">API 端点</Label>
                  <Input value={apiEndpoint} onChange={e => setApiEndpoint(e.target.value)} placeholder="https://api.example.com"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono" />
                </div>
                <FieldWithToggle label="API Key / Token" value={apiKey} onChange={setApiKey}
                  placeholder="sk-xxxx..." fieldKey="api_key" required />
              </div>
            )}

            {secretType === 'generic' && (
              <div className="grid grid-cols-2 gap-3">
                <div className="space-y-1">
                  <Label className="text-[var(--dg-text-secondary)] text-xs">Key <span className="text-red-400">*</span></Label>
                  <Input value={genericKey} onChange={e => setGenericKey(e.target.value)} placeholder="MY_SECRET"
                    className="bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono" />
                </div>
                <FieldWithToggle label="Value" value={genericValue} onChange={setGenericValue}
                  placeholder="密钥值" fieldKey="generic_val" required />
              </div>
            )}
          </div>
        </div>
        <DialogFooter>
          <Button variant="outline" onClick={onClose}>取消</Button>
          <Button onClick={handleSubmit} disabled={submitting} className="bg-[var(--dg-blue)] hover:bg-[var(--dg-blue)]/80">
            {submitting ? '保存中...' : (isEdit ? '更新' : '创建')}
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}

// ────── Main Manager ──────

export default function CredentialManager() {
  const confirm = useConfirm();
  const [credentials, setCredentials] = useState<Credential[]>([]);
  const [loading, setLoading] = useState(false);
  const [dialogOpen, setDialogOpen] = useState(false);
  const [editing, setEditing] = useState<Credential | null>(null);
  const [detailId, setDetailId] = useState<number | null>(null);
  const [detailOpen, setDetailOpen] = useState(false);

  // Filters
  const [filterType, setFilterType] = useState<string>('');
  const [filterSearch, setFilterSearch] = useState('');

  const fetchAll = useCallback(async () => {
    setLoading(true);
    try {
      const res: Record<string, any> = await credentialApi.list({
        page_size: 100,
        ...(filterType ? { secret_type: filterType } : {}),
        ...(filterSearch ? { search: filterSearch } : {}),
      });
      setCredentials(res?.list || []);
    } catch { toast.error('获取凭证列表失败'); }
    finally { setLoading(false); }
  }, [filterType, filterSearch]);

  useEffect(() => { fetchAll(); }, [fetchAll]);

  const handleDelete = async (cred: Credential) => {
    const ok = await confirm({
      title: '删除凭据',
      description: `确定删除凭据「${cred.name}」？此操作不可撤销。`,
      confirmText: '删除',
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await credentialApi.delete(cred.id);
      toast.success('已删除');
      fetchAll();
    } catch { toast.error('删除失败'); }
  };

  const handleToggleActive = async (cred: Credential) => {
    try {
      await credentialApi.toggleActive(cred.id, !cred.is_active);
      toast.success(cred.is_active ? '已禁用' : '已启用');
      fetchAll();
    } catch { toast.error('操作失败'); }
  };

  const handleCopyPrefix = (prefix: string) => {
    navigator.clipboard.writeText(prefix);
    toast.success('引用 ID 已复制');
  };

  const typeOptions = Object.entries(TYPE_CONFIG) as [SecretType, typeof TYPE_CONFIG[SecretType]][];

  return (
    <div className="space-y-4">
      <div className="flex items-center justify-between">
        <div>
          <h2 className="text-lg font-semibold text-[var(--dg-text-primary)]">凭据管理</h2>
          <p className="text-sm text-[var(--dg-text-muted)] mt-0.5">
            统一管理 SSH 密钥、Docker 密码、AKSK、数据库等敏感凭据（AES 加密存储）
          </p>
        </div>
        <div className="flex items-center gap-2">
          <Button variant="outline" size="sm" onClick={fetchAll}>
            <RefreshCw className="w-4 h-4 mr-1" />刷新
          </Button>
          <Button size="sm" onClick={() => { setEditing(null); setDialogOpen(true); }}>
            <Plus className="w-4 h-4 mr-1" />新增凭据
          </Button>
        </div>
      </div>

      {/* Search/Filter */}
      <div className="flex items-center gap-3 flex-wrap">
        <Select value={filterType} onValueChange={setFilterType}>
          <SelectTrigger className="w-[140px] bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] h-9 text-sm">
            <SelectValue placeholder="全部类型" />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="all">全部类型</SelectItem>
            {typeOptions.map(([k, v]) => (
              <SelectItem key={k} value={k}>
                <span className="flex items-center gap-2"><v.icon className="h-3.5 w-3.5" />{v.label}</span>
              </SelectItem>
            ))}
          </SelectContent>
        </Select>
        <div className="relative flex-1 max-w-xs">
          <Search className="absolute left-2.5 top-1/2 -translate-y-1/2 h-4 w-4 text-[var(--dg-text-muted)]" />
          <Input value={filterSearch} onChange={e => setFilterSearch(e.target.value)}
            placeholder="搜索名称、描述..."
            className="pl-8 bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] h-9 text-sm" />
        </div>
        <span className="text-xs text-[var(--dg-text-muted)]">{credentials.length} 个凭据</span>
      </div>

      {loading ? (
        <div className="text-center py-16 text-[var(--dg-text-secondary)]">
          <Zap className="w-6 h-6 animate-spin mx-auto mb-2 text-[var(--dg-blue)]" />加载中...
        </div>
      ) : credentials.length === 0 ? (
        <div className="text-center py-16 border border-dashed border-[var(--dg-border)] rounded-lg">
          <Shield className="w-12 h-12 mx-auto mb-3 text-[var(--dg-text-muted)]" />
          <p className="text-[var(--dg-text-secondary)] mb-2">暂无凭据</p>
          <p className="text-xs text-[var(--dg-text-muted)] mb-4">创建 SSH、Docker、AKSK 等类型的凭据，供流水线和服务器使用</p>
          <Button onClick={() => { setEditing(null); setDialogOpen(true); }}>
            <Plus className="w-4 h-4 mr-1" />创建第一个凭据
          </Button>
        </div>
      ) : (
        <div className="rounded-md border border-[var(--dg-border)] overflow-hidden">
          <table className="w-full text-sm">
            <thead className="bg-[var(--dg-bg-tertiary)] border-b border-[var(--dg-border)]">
              <tr>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)]">名称</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)]">类型</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)] hidden md:table-cell">摘要</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)] hidden lg:table-cell">标签</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)] hidden xl:table-cell">引用ID</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)]">状态</th>
                <th className="px-3 py-2.5 text-right font-medium text-[var(--dg-text-secondary)]">操作</th>
              </tr>
            </thead>
            <tbody>
              {credentials.map(cred => {
                const st = cred.secret_type as SecretType;
                const cfg = TYPE_CONFIG[st];
                const isExpired = cred.expires_at && new Date(cred.expires_at) < new Date();
                return (
                  <tr key={cred.id}
                    className="border-b border-[var(--dg-border)] hover:bg-[var(--dg-bg-tertiary)]/50 cursor-pointer"
                    onClick={() => { setDetailId(cred.id); setDetailOpen(true); }}>
                    <td className="px-3 py-2.5">
                      <div className="flex items-center gap-2">
                        {cfg ? <cfg.icon className={`h-4 w-4 ${cfg.color} shrink-0`} /> : <Key className="h-4 w-4 text-[var(--dg-text-muted)] shrink-0" />}
                        <div>
                          <div className="font-medium text-[var(--dg-text-primary)]">{cred.name}</div>
                          {cred.variable_name && (
                            <div className="text-xs text-[var(--dg-text-muted)] font-mono">{cred.variable_name}</div>
                          )}
                        </div>
                      </div>
                    </td>
                    <td className="px-3 py-2.5">
                      <Badge variant="outline" className={`text-xs ${TYPE_BADGE_CLASS[st] || ''}`}>
                        {cfg?.label || st}
                      </Badge>
                    </td>
                    <td className="px-3 py-2.5 text-[var(--dg-text-secondary)] text-xs hidden md:table-cell max-w-[180px] truncate font-mono">
                      {cred.summary || '-'}
                    </td>
                    <td className="px-3 py-2.5 hidden lg:table-cell">
                      <div className="flex gap-1 flex-wrap">
                        {(cred.tags || []).slice(0, 3).map(t => (
                          <Badge key={t} variant="outline" className="text-xs border-[var(--dg-border)] text-[var(--dg-text-muted)]">{t}</Badge>
                        ))}
                        {(cred.tags || []).length > 3 && (
                          <span className="text-xs text-[var(--dg-text-muted)]">+{cred.tags.length - 3}</span>
                        )}
                      </div>
                    </td>
                    <td className="px-3 py-2.5 hidden xl:table-cell">
                      <code className="text-xs text-[var(--dg-blue)] cursor-pointer font-mono"
                        onClick={(e) => { e.stopPropagation(); handleCopyPrefix(cred.env_prefix); }}>
                        {cred.env_prefix}
                      </code>
                    </td>
                    <td className="px-3 py-2.5">
                      <div className="flex items-center gap-1">
                        {cred.is_active ? (
                          <Badge className="bg-green-500/20 text-green-400 text-xs border-0">启用</Badge>
                        ) : (
                          <Badge className="bg-red-500/20 text-red-400 text-xs border-0">禁用</Badge>
                        )}
                        {isExpired && (
                          <Badge className="bg-yellow-500/20 text-yellow-400 text-xs border-0"><Clock className="h-2.5 w-2.5 mr-0.5" />过期</Badge>
                        )}
                      </div>
                    </td>
                    <td className="px-3 py-2.5 text-right" onClick={(e) => e.stopPropagation()}>
                      <div className="flex justify-end gap-1">
                        <Button variant="ghost" size="icon" className="h-7 w-7"
                          onClick={() => { setEditing(cred); setDialogOpen(true); }} title="编辑">
                          <Pencil className="w-3.5 h-3.5" />
                        </Button>
                        <Button variant="ghost" size="icon" className="h-7 w-7"
                          onClick={() => handleToggleActive(cred)}
                          title={cred.is_active ? '禁用' : '启用'}>
                          {cred.is_active ? <XCircle className="w-3.5 h-3.5 text-yellow-500" /> : <CheckCircle2 className="w-3.5 h-3.5 text-green-500" />}
                        </Button>
                        <Button variant="ghost" size="icon" className="h-7 w-7 text-red-500"
                          onClick={() => handleDelete(cred)} title="删除">
                          <Trash2 className="w-3.5 h-3.5" />
                        </Button>
                      </div>
                    </td>
                  </tr>
                );
              })}
            </tbody>
          </table>
        </div>
      )}

      <CredFormDialog open={dialogOpen} onClose={() => setDialogOpen(false)} onSaved={fetchAll} editData={editing} />
      <CredDetailDialog open={detailOpen} onClose={() => setDetailOpen(false)} credId={detailId} />
    </div>
  );
}