AWS Cognito Sign Up Confirm with Node.js

Let's add AWS Cognito Sign Up Confirm function to the Node project today.
I suppose your project already add AWS Cognito Sign Up to your project.

If not, please take a look at my provious articles:

Article	Codebase
ES6 Node-Express Boilerplate	https://github.com/itwebtiger/express-amazon-cognito/tree/init-expressjs
AWS Cognito Setup	----
AWS Cognito Sign Up with Node.js	https://github.com/itwebtiger/express-amazon-cognito/tree/cognito-signup

Also, you can download the full codebase here if you are interested in this AWS Cognito Sign Up Email Confirm.

Add a AWS Cognito Sign Up Email Confirm route

• Add /api/auth/email/verify route in existing your node.js project, if don't use validateSignupRequest middleware, then you can remove the validateSignupRequest middleware.

import controller from '../controllers/auth.controller';
import {
  validateSignupRequest,
  validateSignupConfirmRequest,
} from '../middleware';

export default (app) => {
  app.post('/api/auth/signup', validateSignupRequest, controller.signup);
  app.post(
    '/api/auth/email/verify',
    validateSignupConfirmRequest,
    controller.signupConfirm,
  );
};

Add a Sign Up Email Confirm Function in the auth controller.

• Add a Sign Up Email Confirm Function in the controller.

// User Signup
import CognitoIdentity from '../services/cognito';

const CognitoIdentityService = CognitoIdentity();

const signup = async (req, res) => {
  // Signup logic here
  // ...

  const { email, password, givenname, familyname } = req.body;

  const cognitoParams = {
    username: email,
    password,
    givenname,
    familyname,
  };

  try {
    const cognitoUser = await new Promise((resolve, reject) => {
      CognitoIdentityService.signup(cognitoParams, (err, user) => {
        if (err) {
          reject(err);
        } else {
          resolve(user);
        }
      });
    });

    res.status(200).send({
      success: true,
      message: 'User registered successfully',
      user: cognitoUser,
    });
  } catch (error) {
    res.status(400).send({ success: false, message: error.message, error });
  }
};

const signupConfirm = async (req, res) => {
  const { email, code } = req.body;
  const cognitoParams = {
    username: email,
    confirmationCode: code,
  };

  try {
    await new Promise((resolve, reject) => {
      CognitoIdentityService.signupConfirm(cognitoParams, (err, user) => {
        if (err) {
          reject(err);
        } else {
          resolve(user);
        }
      });
    });

    // DB logic here
    // ...

    res.status(200).send({
      success: true,
      message: 'User email confirmed successfully',
      user: {
        user_confirmed: true,
      },
    });
  } catch (error) {
    res.status(400).send({ success: false, message: error.message, error });
  }
};

export default {
  signup,
  signupConfirm,
};

Add a Sign Up Email Confirm in the services.

And then we need to add the AWS Cognito user authentication service to the services folder. I will use the amazon-cognito-identity-js for the service.
If you don't understand how to work the service, please check the service folder structure on my git repository.

services/
  └──cognito/
        ├── index.js
        └── methods/
              ├── index.js
              ├── signup.js
              └── signupConfirm.js

This is a signupConfirm file, please add it.

import { CognitoUserPool, CognitoUser } from 'amazon-cognito-identity-js';

/**
 * Confirm the signup action
 * @param {*} poolData
 * @param {{username, confirmationCode}} body
 * @param {*} callback
 */

const signupConfirm = (poolData, body, callback) => {
  const userPool = new CognitoUserPool(poolData);

  const { username, confirmationCode } = body;

  const userData = {
    Username: username,
    Pool: userPool,
  };

  const cognitoUser = new CognitoUser(userData);

  cognitoUser.confirmRegistration(confirmationCode, true, (err, res) =>
    callback(err, res),
  );
};

export default signupConfirm;

The Result in the Postman

We will take a look at AWS Cognito login in the next article.
If you like this type of content you can give me a star on my GitHub repository for the latest updates.

References

https://github.com/itwebtiger/express-amazon-cognito/tree/cognito-signupconfirm
https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-social-idp.html#cognito-user-pools-social-idp-step-1