# All files / src/pages DocumentPage.tsx

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68.49% Branches 50/73
80.64% Functions 25/31
80.61% Lines 79/98

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     import { useState, useCallback, useEffect } from 'react';
    import { useToast } from '../components/ui/Toast';
    import { Pagination } from '../components/ui/Pagination';
    import { documentApi } from '../api/documents';
    import type { DocumentItem } from '../api/types';
    import { FileText, Download, Trash2, RefreshCw, XCircle, Upload, Clock, Languages, HardDrive } from 'lucide-react';
    import { LANGUAGE_CODES } from '../api/types';
    import { useTranslation } from 'react-i18next';

    function DocumentPage() {
      const { t } = useTranslation();
      const { success, error: toastError } = useToast();
      const [sourceLang, setSourceLang] = useState('auto');
      const [targetLang, setTargetLang] = useState('zh');
      const [documents, setDocuments] = useState<DocumentItem[]>([]);
      const [uploading, setUploading] = useState(false);
      const [loading, setLoading] = useState(false);
      const [page, setPage] = useState(1);
      const [totalPages, setTotalPages] = useState(1);
      const [total, setTotal] = useState(0);

      const hasActiveTasks = documents.some(
        doc => doc.status === 'pending' || doc.status === 'processing'
      );

      useEffect(() => {
        if (!hasActiveTasks) return;
        const interval = setInterval(loadDocuments, 3000);
        return () => clearInterval(interval);
      }, [hasActiveTasks]);

      useEffect(() => { loadDocuments(); }, []);
      useEffect(() => { loadDocuments(); }, [page]);
      useEffect(() => { setPage(1); }, [sourceLang, targetLang]);

      const loadDocuments = async () => {
        setLoading(true);
        try {
          const { data } = await documentApi.getList({ page, pageSize: 20 });
          setDocuments(data.list || []);
          setTotalPages(Math.ceil((data.total || 0) / 20) || 1);
          setTotal(data.total || 0);
        } catch (err) {
          console.warn('加载文档列表失败:', err);
        }
        finally { setLoading(false); }
      };

      const handleUpload = useCallback(async (file: File) => {
        const allowedTypes = ['.txt', '.epub', '.docx', '.pdf'];
        const ext = '.' + file.name.split('.').pop()?.toLowerCase();
        if (!allowedTypes.includes(ext)) {
          toastError(`不支持的文件类型: ${ext}，仅支持 ${allowedTypes.join(', ')}`);
          return;
        }

        const maxSize = 50 * 1024 * 1024;
        if (file.size > maxSize) {
          toastError(`文件过大: ${(file.size / 1024 / 1024).toFixed(1)}MB，最大支持 50MB`);
          return;
        }

        setUploading(true);
        try {
          await documentApi.upload(file, { sourceLang, targetLang, mode: 'expert' });
          success('文件上传成功，开始翻译');
          loadDocuments();
        } catch (err) {
          toastError(err instanceof Error ? err.message : '上传失败');
        } finally {
          setUploading(false);
        }
      }, [sourceLang, targetLang]);

      const handleDelete = async (docId: number) => {
        try { await documentApi.delete(docId); success('已删除'); loadDocuments(); }
        catch { toastError(t('document.messages.deleteFailed')); }
      };

      const handleDownload = async (doc: DocumentItem) => {
        try {
          const blob = await documentApi.download(doc.id);
          const ext = doc.fileType || '.' + (doc.fileName?.split('.').pop() || 'txt');
          const baseName = doc.fileName?.replace(/\.[^.]+$/, '') || `translated_${doc.id}`;
          const url = URL.createObjectURL(blob);
          const a = document.createElement('a'); a.href = url; a.download = `${baseName}_translated${ext}`; a.click();
          URL.revokeObjectURL(url);
          success('下载成功');
        } catch (e) {
          const msg = e instanceof Error ? e.message : '下载失败';
          toastError(msg.includes('401') ? '请先登录' : msg.includes('404') ? '文件不存在' : msg);
        }
      };

      const handleRetry = async (docId: number) => {
        try { await documentApi.retry(docId); success('已重新提交翻译'); loadDocuments(); }
        catch { toastError('重试失败'); }
      };

      const handleCancel = async (docId: number) => {
        try { await documentApi.cancel(docId); success('已取消'); loadDocuments(); }
        catch { toastError('取消失败'); }
      };

      const statusLabel: Record<string, string> = {
        pending: t('document.status.queued'),
        processing: t('document.status.translating'),
        completed: t('document.status.completed'),
        failed: t('document.status.failed'),
        cancelled: t('document.status.cancelled'),
      };

      const statusColor: Record<string, string> = {
        pending: 'bg-yellow-bg text-yellow',
        processing: 'bg-accent-bg text-accent',
        completed: 'bg-green-bg text-green',
        failed: 'bg-red-bg text-red',
        cancelled: 'bg-gray-100 text-text-tertiary',
      };

      const formatFileSize = (bytes: number) => {
        Iif (bytes < 1024) return bytes + ' B';
        if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB';
        return (bytes / 1024 / 1024).toFixed(1) + ' MB';
      };

      const getLangName = (code: string) => {
        return t(`common.languages.${code}`, { defaultValue: code });
      };

      return (
        <div className="py-8">
          <div className="mb-6">
            <h1 className="text-[28px] font-bold text-text-primary mb-2 tracking-tight">
              {t('document.title')}
            </h1>
            <p className="text-[15px] text-text-secondary">
              {t('document.subtitle')}
            </p>
          </div>

          <div className="border border-border rounded-xl shadow-sm bg-surface overflow-hidden">
            <div className="flex flex-col sm:flex-row items-start sm:items-center gap-3 px-6 py-4 border-b border-border bg-surface-secondary/50">
              <div className="flex items-center gap-3 flex-1">
                <select
                  value={sourceLang}
                  onChange={e => setSourceLang(e.target.value)}
                  className="bg-transparent text-text-primary text-[14px] font-medium cursor-pointer hover:text-accent transition-colors focus:outline-none border-none"
                >
                  {LANGUAGE_CODES.map(code => (
                    <option key={code} value={code}>{t(`common.languages.${code}`)}</option>
                  ))}
                </select>
                <select
                  value={targetLang}
                  onChange={e => setTargetLang(e.target.value)}
                  className="bg-transparent text-text-primary text-[14px] font-medium cursor-pointer hover:text-accent transition-colors focus:outline-none border-none"
                >
                  {LANGUAGE_CODES.filter(c => c !== 'auto').map(code => (
                    <option key={code} value={code}>{t(`common.languages.${code}`)}</option>
                  ))}
                </select>
              </div>
            </div>

            <div className="p-6 border-b border-border">
              <div
                onDragOver={e => {
                  e.preventDefault();
                  e.currentTarget.classList.add('border-accent', 'bg-accent-bg');
                }}
                onDragLeave={e => {
                  e.preventDefault();
                  e.currentTarget.classList.remove('border-accent', 'bg-accent-bg');
                }}
                onDrop={e => {
                  e.preventDefault();
                  e.currentTarget.classList.remove('border-accent', 'bg-accent-bg');
                  Eif (e.dataTransfer.files[0]) handleUpload(e.dataTransfer.files[0]);
                }}
                onClick={() => {
                  const input = document.createElement('input');
                  input.type = 'file';
                  input.accept = '.txt,.epub,.docx,.pdf';
                  input.onchange = () => {
                    if (input.files?.[0]) handleUpload(input.files[0]);
                  };
                  input.click();
                }}
                className="border-2 border-dashed border-border rounded-xl p-10 text-center hover:border-accent/50 hover:bg-surface-secondary/30 transition-all cursor-pointer group"
              >
                <div className="flex flex-col items-center gap-3">
                  <div className="w-16 h-16 rounded-full bg-surface-secondary group-hover:bg-accent-bg transition-colors flex items-center justify-center">
                    <Upload className="w-8 h-8 text-text-tertiary group-hover:text-accent transition-colors" />
                  </div>
                  <div>
                    <p className="text-[15px] font-medium text-text-primary mb-1">
                      {t('document.upload.drag')}
                    </p>
                    <p className="text-[13px] text-text-tertiary">
                      {t('document.upload.formats')}
                    </p>
                  </div>
                  <div className="flex items-center gap-4 mt-2">
                    <span className="text-[11px] text-text-placeholder px-2 py-1 bg-surface-secondary rounded">TXT</span>
                    <span className="text-[11px] text-text-placeholder px-2 py-1 bg-surface-secondary rounded">EPUB</span>
                    <span className="text-[11px] text-text-placeholder px-2 py-1 bg-surface-secondary rounded">DOCX</span>
                    <span className="text-[11px] text-text-placeholder px-2 py-1 bg-surface-secondary rounded">PDF</span>
                  </div>
                </div>
              </div>
              {uploading && (
                <div className="mt-4 flex items-center justify-center gap-2 text-[13px] text-accent">
                  <div className="w-4 h-4 border-2 border-accent border-t-transparent rounded-full animate-spin" />
                  {t('document.upload.uploading')}
                </div>
              )}
            </div>

            <div className="flex-1 overflow-auto">
            {loading ? (
              <div className="flex flex-col items-center justify-center py-16 gap-3">
                <div className="w-8 h-8 border-2 border-accent border-t-transparent rounded-full animate-spin" />
                <span className="text-[13px] text-text-tertiary">{t('document.loading')}</span>
              </div>
            ) : documents.length === 0 ? (
              <div className="flex flex-col items-center justify-center py-16 gap-4 text-center">
                <div className="w-16 h-16 rounded-full bg-surface-secondary flex items-center justify-center">
                  <FileText className="w-8 h-8 text-text-tertiary" />
                </div>
                <div>
                  <p className="text-[15px] font-medium text-text-secondary mb-1">{t('document.empty.title')}</p>
                  <p className="text-[13px] text-text-tertiary">{t('document.empty.subtitle')}</p>
                </div>
              </div>
            ) : (
              <div className="divide-y divide-border/50">
                {documents.map(doc => (
                  <div key={doc.id} className="px-6 py-4 hover:bg-surface-secondary/30 transition-colors">
                    <div className="flex items-start gap-4">
                      <div className="flex-shrink-0 w-10 h-10 rounded-lg bg-surface-secondary flex items-center justify-center">
                        <FileText className="w-5 h-5 text-text-tertiary" />
                      </div>

                      <div className="flex-1 min-w-0">
                        <div className="flex items-start justify-between gap-3 mb-2">
                          <div className="min-w-0 flex-1">
                            <p className="text-[14px] font-medium text-text-primary truncate" title={doc.name}>
                              {doc.name}
                            </p>
                            <div className="flex items-center gap-3 mt-1.5 text-[12px] text-text-tertiary">
                              <span className="flex items-center gap-1">
                                <Languages className="w-3 h-3" />
                                {getLangName(doc.sourceLang)} → {getLangName(doc.targetLang)}
                              </span>
                              <span className="flex items-center gap-1">
                                <HardDrive className="w-3 h-3" />
                                {formatFileSize(doc.fileSize || 0)}
                              </span>
                              <span className="flex items-center gap-1">
                                <Clock className="w-3 h-3" />
                                {new Date(doc.createTime).toLocaleString('zh-CN', {
                                  month: '2-digit',
                                  day: '2-digit',
                                  hour: '2-digit',
                                  minute: '2-digit'
                                })}
                              </span>
                            </div>
                          </div>

                          <div className="flex items-center gap-2 flex-shrink-0">
                            {doc.status === 'completed' && (
                              <button
                                onClick={() => handleDownload(doc)}
                                className="p-2 rounded-lg text-text-tertiary hover:text-accent hover:bg-accent-bg transition-colors"
                                title={t('document.actions.download')}
                              >
                                <Download className="w-4 h-4" />
                              </button>
                            )}
                            {(doc.status === 'pending' || doc.status === 'processing') && (
                              <button
                                onClick={() => handleCancel(doc.id)}
                                className="p-2 rounded-lg text-text-tertiary hover:text-red hover:bg-red-bg transition-colors"
                                title={t('document.actions.cancel')}
                              >
                                <XCircle className="w-4 h-4" />
                              </button>
                            )}
                            {doc.status === 'failed' && (
                              <button
                                onClick={() => handleRetry(doc.id)}
                                className="p-2 rounded-lg text-text-tertiary hover:text-accent hover:bg-accent-bg transition-colors"
                                title={t('document.actions.retry')}
                              >
                                <RefreshCw className="w-4 h-4" />
                              </button>
                            )}
                            <button
                              onClick={() => handleDelete(doc.id)}
                              className="p-2 rounded-lg text-text-tertiary hover:text-red hover:bg-red-bg transition-colors"
                              title={t('document.actions.delete')}
                            >
                              <Trash2 className="w-4 h-4" />
                            </button>
                          </div>
                        </div>

                        <div className="flex items-center gap-3">
                          <span className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-[12px] font-medium ${statusColor[doc.status] || 'bg-gray-100 text-text-tertiary'}`}>
                            {statusLabel[doc.status] || doc.status}
                          </span>

                          {(doc.status === 'pending' || doc.status === 'processing') && (
                            <div className="flex-1 max-w-xs">
                              <div className="flex items-center justify-between text-[11px] text-text-tertiary mb-1">
                                <span>{t('document.progress')}</span>
                                <span className="font-mono">{doc.progress || 0}%</span>
                              </div>
                              <div className="w-full h-1.5 bg-surface-secondary rounded-full overflow-hidden">
                                <div
                                  className="h-full bg-gradient-brand transition-all duration-500 ease-out"
                                  style={{ width: `${doc.progress || 0}%` }}
                                />
                              </div>
                            </div>
                          )}

                          {doc.status === 'failed' && doc.errorMessage && (
                            <span className="text-[12px] text-red flex-1 truncate" title={doc.errorMessage}>
                              {doc.errorMessage}
                            </span>
                          )}
                        </div>
                      </div>
                    </div>
                  </div>
                ))}
              </div>
            )}
            </div>

            <Pagination page={page} totalPages={totalPages} onPageChange={setPage} />

            <div className="flex items-center justify-between px-6 py-3 border-t border-border bg-surface-secondary">
              <div className="flex items-center gap-4 text-[12px] text-text-tertiary">
                <span>{documents.length} / {total} {t('document.summary.count')}</span>
                {documents.length > 0 && (
                  <>
                    <span className="text-text-placeholder">|</span>
                    <span>
                      {t('document.summary.total')}: {formatFileSize(documents.reduce((sum, doc) => sum + (doc.fileSize || 0), 0))}
                    </span>
                  </>
                )}
              </div>
              <button
                onClick={loadDocuments}
                disabled={loading}
                className="inline-flex items-center gap-1.5 px-3 py-1.5 text-[13px] text-text-tertiary hover:text-accent transition-colors disabled:opacity-50"
              >
                <RefreshCw className={`w-3.5 h-3.5 ${loading ? 'animate-spin' : ''}`} />
                {t('common.refresh')}
              </button>
            </div>
          </div>
        </div>
      );
    }

    export { DocumentPage };