API Route (Next.js App Dir Route Handler)

import { createS3Client, generatePresignedUrls } from "next-s3-uploader";
 
export async function POST(req) {
  try {
    const { keys } = await req.json();
 
    // Configure S3 client
    const s3Client = createS3Client({
      provider: "aws",
      region: "us-east-1",
      credentials: {
        accessKeyId: "YOUR_ACCESS_KEY_ID",
        secretAccessKey: "YOUR_SECRET_ACCESS_KEY",
      },
    });
 
    // Generate pre-signed URLs
    const bucket = "your-bucket-name";
    const prefix = `userId/images/`;
    const urls = await generatePresignedUrls(s3Client, keys, bucket, prefix);
 
    return new Response(JSON.stringify(urls), { status: 200 });
  } catch (error) {
    console.error("Error processing the request:", error);
    return new Response("Internal Server Error", { status: 500 });
  }
}