presigned.js

import { getSignedUrl } from '@aws-sdk/s3-request-presigner';
import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3';
export default async function handler(req, res) {
  const client = new S3Client({
    region: process.env.S3_REGION,
    credentials: {
      accessKeyId: process.env.S3_ACCESS_KEY,
      secretAccessKey: process.env.S3_SECRET_KEY,
    },
  });

  const command = new PutObjectCommand({
    Bucket: process.env.S3_BUCKET_NAME,
    Key: req.query.file,
    fileType: req.query.fileType,
  });
  const url = await getSignedUrl(client, command, { expiresIn: 60 });

  res.status(200).json({
    url: url,
  });
}