// CSV 批量导入用户弹窗（下载模板 + 文件选择 + 预览 + 导入结果） // Logan.Li
import { Button } from '@/components/ui/button';
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@/components/ui/table';
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog';
import { Upload, Download, CheckCircle, XCircle } from 'lucide-react';
import { userApi } from '@/services/api';

interface CsvImportDialogProps {
  importDialogOpen: 'csv' | 'ldap' | null;
  setImportDialogOpen: (v: 'csv' | 'ldap' | null) => void;
  importPreview: any[];
  setImportPreview: ( p: any[]) => void;
  importing: boolean;
  importResult: any;
  setImportResult: ( r: any) => void;
  handleCsvUpload: (e: React.ChangeEvent<HTMLInputElement>) => void;
  handleBatchImport: () => void;
}

// CsvImportDialog 展示 CSV 导入流程：上传 → 预览 → 确认 → 结果 // Logan.Li
export function CsvImportDialog({
  importDialogOpen,
  setImportDialogOpen,
  importPreview,
  setImportPreview,
  importing,
  importResult,
  setImportResult,
  handleCsvUpload,
  handleBatchImport,
}: CsvImportDialogProps) {
  return (
    <Dialog open={importDialogOpen === 'csv'} onOpenChange={(v) => !v && setImportDialogOpen(null)}>
      <DialogContent className="bg-slate-900 border-slate-800 max-w-2xl">
        <DialogHeader>
          <DialogTitle className="text-slate-100 flex items-center gap-2">
            <Upload className="h-5 w-5 text-blue-400" />
            批量导入用户（CSV）
          </DialogTitle>
          <DialogDescription className="text-slate-500">
            上传 CSV 文件批量创建用户。请先下载模板，按格式填写后上传。
          </DialogDescription>
        </DialogHeader>

        {!importResult ? (
          <>
            <div className="space-y-3">
              <div className="flex items-center gap-2">
                <Button variant="outline" size="sm" className="border-slate-700 text-slate-300" onClick={() => userApi.downloadTemplate()}>
                  <Download className="h-4 w-4 mr-1.5" />
                  下载模板
                </Button>
                <label className="inline-flex items-center px-3 py-1.5 rounded-md text-sm bg-slate-800 border border-slate-700 text-slate-200 cursor-pointer hover:bg-slate-700 transition-colors">
                  <Upload className="h-4 w-4 mr-1.5" />
                  选择 CSV 文件
                  <input type="file" accept=".csv" className="hidden" onChange={handleCsvUpload} />
                </label>
              </div>

              {importPreview.length > 0 && (
                <div className="rounded-lg border border-slate-800 overflow-hidden">
                  <div className="px-3 py-2 bg-slate-800/50 text-xs text-slate-400">
                    预览：{importPreview.length} 条数据
                  </div>
                  <Table>
                    <TableHeader>
                      <TableRow className="border-slate-800">
                        <TableHead className="text-slate-400 text-xs">用户名</TableHead>
                        <TableHead className="text-slate-400 text-xs">昵称</TableHead>
                        <TableHead className="text-slate-400 text-xs">邮箱</TableHead>
                        <TableHead className="text-slate-400 text-xs">手机</TableHead>
                      </TableRow>
                    </TableHeader>
                    <TableBody>
                      {importPreview.slice(0, 5).map((u, i) => (
                        <TableRow key={i} className="border-slate-800">
                          <TableCell className="text-slate-200 text-xs">{u.username}</TableCell>
                          <TableCell className="text-slate-300 text-xs">{u.nickname}</TableCell>
                          <TableCell className="text-slate-400 text-xs">{u.email}</TableCell>
                          <TableCell className="text-slate-400 text-xs">{u.phone}</TableCell>
                        </TableRow>
                      ))}
                      {importPreview.length > 5 && (
                        <TableRow className="border-slate-800">
                          <TableCell colSpan={4} className="text-slate-500 text-xs text-center">
                            还有 {importPreview.length - 5} 条...
                          </TableCell>
                        </TableRow>
                      )}
                    </TableBody>
                  </Table>
                </div>
              )}
            </div>

            <DialogFooter>
              <Button variant="outline" className="border-slate-700 text-slate-300" onClick={() => { setImportDialogOpen(null); setImportPreview([]); }}>
                取消
              </Button>
              <Button className="bg-blue-600 hover:bg-blue-700 text-white" onClick={handleBatchImport} disabled={importing || importPreview.length === 0}>
                {importing ? '导入中...' : `确认导入 (${importPreview.length})`}
              </Button>
            </DialogFooter>
          </>
        ) : (
          <div className="space-y-4 py-2">
            <div className={`flex items-center gap-3 p-4 rounded-lg ${importResult.code === 200 ? 'bg-emerald-500/10' : 'bg-red-500/10'}`}>
              {importResult.code === 200 ? (
                <CheckCircle className="h-6 w-6 text-emerald-400 shrink-0" />
              ) : (
                <XCircle className="h-6 w-6 text-red-400 shrink-0" />
              )}
              <span className="text-sm text-slate-200">{importResult.message}</span>
            </div>
            {importResult.errors?.length > 0 && (
              <div className="max-h-32 overflow-auto rounded-lg bg-slate-800/50 p-3 space-y-1">
                {importResult.errors.map((err: string, i: number) => (
                  <div key={i} className="text-xs text-red-400">{err}</div>
                ))}
              </div>
            )}
            <DialogFooter>
              <Button className="bg-blue-600 hover:bg-blue-700 text-white" onClick={() => { setImportDialogOpen(null); setImportPreview([]); setImportResult(null); }}>
                完成
              </Button>
            </DialogFooter>
          </div>
        )}
      </DialogContent>
    </Dialog>
  );
}