S3Storage.js

const aws = require('aws-sdk');
const mime = require('mime');
const path = require('path');
const fs = require('fs');
const multerConfig = require('../../config/multerConfig');


const { AWS_BUCKET_REGION, AWS_BUCKET } = process.env;

module.exports = class S3Storage {
  constructor() {
    this.client = new aws.S3({
      region: AWS_BUCKET_REGION,
    })
  }

  async saveFile(filename) {
    const originalPath = path.resolve(multerConfig.directory, filename)
    const ContentType = mime.getType(originalPath);

    if (!ContentType) {
      throw new Error("File not found")
    }

    const fileContent = await fs.promises.readFile(originalPath);

    this.client.putObject({
      Bucket: AWS_BUCKET,
      Key: filename,
      ACL: 'public-read',
      Body: fileContent,
      ContentType,
    }).promise();

    await fs.promises.unlink(originalPath)
  }

  async deleteFile(filename) {
    await this.client.deleteObject({
      Bucket: AWS_BUCKET,
      Key: filename,
    }).promise();
  }
}