s3.js

const aws = require("aws-sdk");
const fs = require("fs");

let secrets;
if (process.env.NODE_ENV == "production") {
    secrets = process.env; // in prod the secrets are environment variables
} else {
    secrets = require("./secrets"); // in dev they are in secrets.json which is listed in .gitignore
}

const s3 = new aws.S3({
    accessKeyId: secrets.AWS_KEY,
    secretAccessKey: secrets.AWS_SECRET
});

exports.upload = (req, res, next) => {
    if (!req.file) {
        console.log("no req.file");
        return res.sendStatus(500);
    }

    const { filename, mimetype, size, path } = req.file;

    const promise = s3
        .putObject({
            Bucket: "lucy-msg-socialnet",
            ACL: "public-read",
            Key: filename,
            Body: fs.createReadStream(path),
            ContentType: mimetype,
            ContentLength: size
        })
        .promise(); //sets whole putObject block to be a promise

    promise
        .then(() => {
            console.log("s3.js putObject worked");
            next();
            fs.unlink(path, () => {});
        })
        .catch(err => {
            console.log("s3.js: error in upload putObject", err);
            res.sendStatus(500);
        });
};

exports.delete = (picArray, next) => {
    if (!picArray) {
        console.log("no pics");
        return res.sendStatus(500);
    }
    //removed from here
    const promise = s3
        .deleteObjects({
            Bucket: "lucy-msg-socialnet",
            Delete: {
                Objects: picArray,
                Quiet: false
            }
        })
        .promise();

    promise
        .then(data => {
            console.log("data in s3.js", data);
            console.log("s3.js deleteObject fired");
            next();
        })
        .catch(err => {
            console.log("s3.js: error in delete object", err);
            res.sendStatus(500);
        });
};