Client in React App

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

Server

npm start

Runs the server for storing the file and details. Open http://localhost:4000 to view it in the browser.

The server will reload if you make edits due to nodemon.
You will also see any lint errors in the console.

multer

const multer = require('multer');

var storage = multer.diskStorage({
    destination : (req, file, cb) =>{
    cb(null, './uploads')
  },
  filename : (req, file, cb)=> {
    cb(null, Date.now() + '-' +file.originalname )
  }
})

var upload = multer({ storage: storage });

module.exports =  upload;

mongoose schema

const profileSchema = mongoose.Schema({
    name:{
        type: String
    },
    email:{
        type: String,
        required: true
    },
    file_orgname: {
        type: String
    },
    file_url: {
        type: String
    },
    file_name: {
        type: String
    }

});

router

router.post('/upload', upload.single('docs'), async (req, res)=>{

    const userparams = req.body;
    const userfile = req.file;
    console.log(userfile);
    userparams.filename = userfile.filename;
    console.log(userparams);

    if(!userparams.name || !userparams.email)
    {
        res.status(500)
            .send("Please provide your name and email");
        return;
    }else if(!userfile)
    {
        res.status(500)
            .send("Please upload file");
        return;
    } 

    let user = new Profile(userparams);
    user = await user.save();

    res.status(200).send(userparams);

})

file upload with AWS-S3

    S3.upload(s3_params, async (error, data)=>{
        if(error)
        {
            res.status(500).send(error);
        }

        userparams.file_orgname = userfile.originalname;
        userparams.file_url = data.Location;
        userparams.file_name = data.key;
        console.log(userparams);

        let user = new Profile(userparams);
        user = await user.save();

        res.status(200).send({data, userparams});
    });