User Authentication and Authorization using npm bcryptjs, JWT, and MongoDB Atlas

Prerequisites

• Basic knowledge of Node, JavaScript and MongoDB.
• Node and NPM installed.
• MongoDB Atlas account

How to Start

• Clone the repo.
• Install dependencies in root directory using npm i
• Run npm start
• Server will be running at locahost:5000
• Declare your own MongoDB Atlas Connect URL in config folder

How to test the API

Make sure you have a Postman account or Postman Agent downloaded.

• Create Collection
• Add POST request with URL http://localhost:5000/api/users for User Registration. In the Headers tab add key-value pair as Content-Type: application/json and in the body tab write the JSON object for user registration. For example:

{
    "email":"username@gmail.com",
    "password":"user1234"
}

This will return a JSON web token

• Add POST request with URL http://localhost:5000/api/auth for user login. Follow the same procedure as registration as in real-time we fetch data submitted by the form. Here also we will get a token in return.

• Add GET request with URL http://localhost:5000/api/auth to get the logged-in user. In this case, we have to pass the token in the Headers tab with key-value pair 'auth-token': Token_String.

Read my blog related to this User Auth