formData in nextjs

uploadNext.js

import { NextResponse } from 'next/server';
import fs from 'fs';
import path from 'path';

export async function POST(request) {
  try {
    // Parse the form data
    let form = await request.formData();
    const blob = form.get('file');
    const filename = form.get('name');

    // Validate that filename is not null or undefined
    if (!filename) {
      return NextResponse.json({ error: 'Filename is required' }, { status: 400 });
    }

    // Convert blob to buffer
    const buffer = Buffer.from(await blob.arrayBuffer());

    // Define the upload directory path
    const uploadDir = path.join(process.cwd(), 'public', 'upload');

    // Ensure the directory exists, create if it doesn't
    if (!fs.existsSync(uploadDir)) {
      fs.mkdirSync(uploadDir, { recursive: true });
    }

    // Set the file path where the file will be saved
    const filepath = path.join(uploadDir, filename);

    // Write the file to the specified path
    fs.writeFileSync(filepath, buffer);

    // Return a successful response
    return NextResponse.json({ message: 'File uploaded successfully', filePath: filepath }, { status: 200 });

  } catch (error) {
    console.error('File upload error:', error);
    return NextResponse.json({ error: 'File upload failed' }, { status: 500 });
  }
}