PhotoController.js
For the full content of this gist, refer to https://gist.github.com/CodingAbdullah/b60c1d2f6128a420d5e0505c91696bad
McMaster. Software Engineer with a keen interest in blockchain and web3.
require("dotenv").config({ path: '.env' });
const AWS = require("aws-sdk");
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
let configuration = {
accessKeyId: process.env.AWS_ACCESS_ID,
secretAccessKey: process.env.AWS_SECRET_KEY,
region: process.env.AWS_REGION
}
// Setting the S3 object to work with user identification and region
let S3 = new AWS.S3(configuration);
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.upload({
Bucket: process.env.AWS_S3_BUCKET_NAME,
Key: String(uuid.v4().split('-')[0]) + '.png', // Defining a unique key to identify the object
Body: fileData
}, (err, bucketData) => {
if (err){
res.status(400).json({
message: "Could not upload sunflower picture. " + err
});
}
else {
res.status(201).json({
message: "File uploaded successfully!"
});
}
});
}
});
}
exports.deletePhotoController = (req, res) => {
const { pictureId } = JSON.parse(req.body.body);
// Delete requested object stored in S3 bucket using key
S3.deleteObject({
Bucket: process.env.AWS_S3_BUCKET_NAME,
Key: pictureId + '.png'
}, (err, data) => {
if (err) {
res.status(400).json({
message: "Could not delete object"
});
}
else {
res.status(200).json({
message: "Object deleted successfully!"
});
}
});
}