PhotoController.js
For the full content of this gist, refer to https://gist.github.com/CodingAbdullah/3dd7e6b57db31e27d5d610b1dfec54ee
McMaster. Software Engineer with a keen interest in blockchain and web3.
require("dotenv").config({ path: '.env' });
const { DeleteObjectCommand, PutObjectCommand, S3Client } = require('@aws-sdk/client-s3');
const uuid = require('uuid');
const fs = require('fs'); // Built-in modules for working with file data
const { picturePath } = require('../util/picturePath');
// Set up configuration using an AWS IAM identity to programmatically access AWS S3 using SDK
// Set up your user to have appropriate permissions
// Setting the S3 object to work with user identification and region
let S3 = new S3Client({ region: process.env.AWS_REGION,
credentials: {
accessKeyId: process.env.AWS_ACCESS_ID,
secretAccessKey: process.env.AWS_SECRET_KEY
}
});
exports.uploadPhotoController = (req, res) => {
// Create a read stream for the file and use it as data prior to uploading to S3 Bucket
fs.readFile(picturePath, (err, fileData) => {
if (err) {
res.status(400).json({
message: "Could not read file data. " + err
});
}
else {
// Using the upload function to send sunflower picture to AWS S3 bucket
S3.send(new PutObjectCommand({
Bucket: process.env.AWS_S3_BUCKET_NAME,
Key: String(uuid.v4().split("-")[0]) + '.png', // Defining a unique key to identify the object
Body: fileData
}))
.then(() => {
res.status(201).json({
message: "File uploaded successfully!"
});
})
.catch(err => {
res.status(400).json({
message: "Could not upload sunflower picture. " + err
});
});
}
});
}
exports.deletePhotoController = (req, res) => {
const { pictureId } = JSON.parse(req.body.body);
// Delete requested object stored in S3 bucket using key
S3.send(new DeleteObjectCommand({
Bucket: process.env.AWS_S3_BUCKET_NAME,
Key: pictureId + '.png'
}))
.then(() => {
res.status(200).json({
message: "Object deleted successfully!"
});
})
.catch((err) => {
res.status(400).json({
message: "Could not delete object. " + err
});
});
}