feat: add api for export

src/components/ExportSidebar.tsx

@@ -1,7 +1,9 @@
 import { useState } from 'react';
-import { X, Check, Copy, Download, Code2, Image as ImageIcon, FileText, ChevronRight } from 'lucide-react';
+import { X, Check, Copy, Download, Code2, Image as ImageIcon, FileText, Loader2 } from 'lucide-react';
 import { RecognitionResult } from '../types';
 import { convertMathmlToOmml, wrapOmmlForClipboard } from '../lib/ommlConverter';
+import { API_BASE_URL } from '../config/env';
+import { tokenManager } from '../lib/api';
 
 interface ExportSidebarProps {
   isOpen: boolean;
@@ -22,6 +24,7 @@ interface ExportOption {
 
 export default function ExportSidebar({ isOpen, onClose, result }: ExportSidebarProps) {
   const [copiedId, setCopiedId] = useState<string | null>(null);
+  const [exportingId, setExportingId] = useState<string | null>(null);
 
   if (!result) return null;
 
@@ -84,7 +87,62 @@ export default function ExportSidebar({ isOpen, onClose, result }: ExportSidebar
     }
   ];
 
+  // Handle DOCX/PDF export via API
+  const handleFileExport = async (type: 'docx' | 'pdf') => {
+    if (!result?.id) return;
+
+    setExportingId(type);
+    try {
+      const token = tokenManager.getToken();
+      const response = await fetch(`${API_BASE_URL}/task/export`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+          ...(token ? { 'Authorization': token } : {}),
+        },
+        body: JSON.stringify({
+          task_id: parseInt(result.id, 10),
+          type: type,
+        }),
+      });
+
+      if (!response.ok) {
+        throw new Error(`Export failed: ${response.statusText}`);
+      }
+
+      // Get the blob from response
+      const blob = await response.blob();
+
+      // Create download link
+      const url = URL.createObjectURL(blob);
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = `export.${type}`;
+      document.body.appendChild(a);
+      a.click();
+      document.body.removeChild(a);
+      URL.revokeObjectURL(url);
+
+      setCopiedId(type);
+      setTimeout(() => {
+        setCopiedId(null);
+        onClose();
+      }, 1000);
+    } catch (err) {
+      console.error('Export failed:', err);
+      alert('导出失败，请重试');
+    } finally {
+      setExportingId(null);
+    }
+  };
+
   const handleAction = async (option: ExportOption) => {
+    // Handle DOCX/PDF export via API
+    if (option.id === 'docx' || option.id === 'pdf') {
+      await handleFileExport(option.id as 'docx' | 'pdf');
+      return;
+    }
+
     let content = option.getContent(result);
 
     // Fallback: If Word MathML is missing, try to convert from MathML
@@ -122,7 +180,7 @@ export default function ExportSidebar({ isOpen, onClose, result }: ExportSidebar
           await navigator.clipboard.writeText(content);
         }
       } else if (option.isDownload) {
-        // Simulate download
+        // Simulate download (for other file types if any)
         const blob = new Blob([content], { type: 'text/plain' });
         const url = URL.createObjectURL(blob);
         const a = document.createElement('a');
@@ -200,7 +258,9 @@ export default function ExportSidebar({ isOpen, onClose, result }: ExportSidebar
                       </span>
 
                       <div className="text-gray-400 group-hover:text-blue-600">
-                        {copiedId === option.id ? (
+                        {exportingId === option.id ? (
+                          <Loader2 size={16} className="animate-spin text-blue-500" />
+                        ) : copiedId === option.id ? (
                           <Check size={16} className="text-green-500" />
                         ) : option.isDownload ? (
                           <Download size={16} />