import React, { useState } from 'react'; import FileUpload from './components/FileUpload'; import MarkdownPreview from './components/MarkdownPreview'; import DownloadButton from './components/DownloadButton'; import axios from 'axios'; function App() { const [markdownContent, setMarkdownContent] = useState(''); const [fileName, setFileName] = useState(''); const handleFileUpload = async (file) => { const formData = new FormData(); formData.append('file', file); try { const response = await axios.post('/api/convert', formData, { headers: { 'Content-Type': 'multipart/form-data', }, }); setMarkdownContent(response.data.markdown); setFileName(file.name); } catch (error) { console.error('Error uploading file:', error); } }; return (