const { S3Client, DeleteObjectCommand } = require('@aws-sdk/client-s3');
const { Upload } = require('@aws-sdk/lib-storage');

const BUCKET = 'snakkimo';
const ENDPOINT = 'https://fsn1.your-objectstorage.com';
const PUBLIC_BASE = `https://${BUCKET}.fsn1.your-objectstorage.com`;

const client = new S3Client({
  region: 'fsn1',
  endpoint: ENDPOINT,
  credentials: {
    accessKeyId: process.env.S3_ACCESS_KEY,
    secretAccessKey: process.env.S3_SECRET_KEY,
  },
  forcePathStyle: false,
});

async function uploadFile(key, buffer, mimetype) {
  const upload = new Upload({
    client,
    params: {
      Bucket: BUCKET,
      Key: key,
      Body: buffer,
      ContentType: mimetype,
      ACL: 'public-read',
    },
  });
  await upload.done();
  return `${PUBLIC_BASE}/${key}`;
}

async function deleteFile(key) {
  await client.send(new DeleteObjectCommand({ Bucket: BUCKET, Key: key }));
}

function keyFromUrl(url) {
  if (!url) return null;
  return url.replace(`${PUBLIC_BASE}/`, '');
}

module.exports = { uploadFile, deleteFile, keyFromUrl };