import { useState } from 'react';
import { useTranslation } from 'react-i18next';
import {
  Plus, Pencil, Trash2, RefreshCw, Key, Shield, Search,
  Clock, CheckCircle2, XCircle, Zap,
} from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Badge } from '@/components/ui/badge';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import { toast } from 'sonner';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { useCredentials, useCredentialMutations } from '@/hooks/api';
import type { Credential, SecretType } from './credential-manager/types';
import { TYPE_CONFIG, TYPE_BADGE_CLASS } from './credential-manager/constants';
import { CredDetailDialog } from './credential-manager/CredDetailDialog';
import { CredFormDialog } from './credential-manager/CredFormDialog';

// 凭据管理页编排器 // Logan.Li
export default function CredentialManager() {
  const { t } = useTranslation();
  const confirm = useConfirm();
  const [dialogOpen, setDialogOpen] = useState(false);
  const [editing, setEditing] = useState<Credential | null>(null);
  const [detailId, setDetailId] = useState<number | null>(null);
  const [detailOpen, setDetailOpen] = useState(false);

  // 筛选条件 // Logan.Li
  const [filterType, setFilterType] = useState('all');
  const [filterSearch, setFilterSearch] = useState('');

  const listParams = {
    page_size: 100,
    ...(filterSearch ? { search: filterSearch } : {}),
    ...(filterType && filterType !== 'all' ? { secret_type: filterType } : {}),
  };

  const { data: credentials = [], isLoading: loading, refetch } = useCredentials(listParams);
  const { deleteMutation, toggleActiveMutation } = useCredentialMutations();

  const handleDelete = async (cred: Credential) => {
    const ok = await confirm({
      title: t('deploy.cred.deleteCred'),
      description: t('deploy.pipeline.deleteConfirm', { name: cred.name }),
      confirmText: t('common.delete'),
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await deleteMutation.mutateAsync(cred.id);
      toast.success(t('deploy.toast.deleted'));
    } catch { toast.error(t('deploy.toast.deleteFailed')); }
  };

  const handleToggleActive = async (cred: Credential) => {
    try {
      await toggleActiveMutation.mutateAsync({ id: cred.id, isActive: !cred.is_active });
      toast.success(cred.is_active ? t('deploy.toast.disabled') : t('deploy.toast.enabled'));
    } catch { toast.error(t('deploy.toast.operationFailed')); }
  };

  const handleCopyPrefix = (prefix: string) => {
    navigator.clipboard.writeText(prefix);
    toast.success(t('deploy.cred.refIdCopied'));
  };

  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)]">{t('deploy.cred.title')}</h2>
          <p className="text-sm text-[var(--dg-text-muted)] mt-0.5">
            {t('deploy.cred.subtitle')}
          </p>
        </div>
        <div className="flex items-center gap-2">
          <Button variant="outline" size="sm" onClick={() => refetch()}>
            <RefreshCw className="w-4 h-4 mr-1" />{t('common.refresh')}
          </Button>
          <Button size="sm" onClick={() => { setEditing(null); setDialogOpen(true); }}>
            <Plus className="w-4 h-4 mr-1" />{t('deploy.cred.addCredential')}
          </Button>
        </div>
      </div>

      {/* 搜索与筛选 // Logan.Li */}
      <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={t('deploy.label.allType')} />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="all">{t('deploy.label.allType')}</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={t('deploy.label.searchPlaceholder')}
            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)]">{t('deploy.cred.credCount', { count: credentials.length })}</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)]" />{t('deploy.label.loading')}
        </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">{t('deploy.cred.noCredentials')}</p>
          <p className="text-xs text-[var(--dg-text-muted)] mb-4">{t('deploy.cred.subtitle')}</p>
          <Button onClick={() => { setEditing(null); setDialogOpen(true); }}>
            <Plus className="w-4 h-4 mr-1" />{t('deploy.cred.createFirst')}
          </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)]">{t('deploy.table.name')}</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.type')}</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)] hidden md:table-cell">{t('deploy.table.repoUrl')}</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)] hidden lg:table-cell">{t('deploy.table.tagLabel')}</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)] hidden xl:table-cell">{t('deploy.cred.refId')}</th>
                <th className="px-3 py-2.5 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.status')}</th>
                <th className="px-3 py-2.5 text-right font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.actions')}</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">{t('common.enable')}</Badge>
                        ) : (
                          <Badge className="bg-red-500/20 text-red-400 text-xs border-0">{t('common.disable')}</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" />{t('deploy.status.expired')}</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 as Credential); setDialogOpen(true); }} title={t('common.edit')}>
                          <Pencil className="w-3.5 h-3.5" />
                        </Button>
                        <Button variant="ghost" size="icon" className="h-7 w-7"
                          onClick={() => handleToggleActive(cred as Credential)}
                          title={cred.is_active ? t('common.disable') : t('common.enable')}>
                          {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 as Credential)} title={t('common.delete')}>
                          <Trash2 className="w-3.5 h-3.5" />
                        </Button>
                      </div>
                    </td>
                  </tr>
                );
              })}
            </tbody>
          </table>
        </div>
      )}

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