Using Cognito User Pools, without Cognito Federated Identities(identity pools)

Question

I would like to use only Cognito User Pool, and therefore I want to use identity federation with Cognito User Pools, without Cognito Federated Identities (identity pools).

Answer 1

If you are using your own Custom UI, you will need to create a button/anchor to redirect to the user.

This is what I use to create a url (JS Code):

`https://${domain}/oauth2/authorize`,
  `?redirect_uri=${redirectSignIn}`,
  `&response_type=${responseType}`,
  `&client_id=${userPoolWebClientId}`,
  `&identity_provider=${providerName.toString()}`

providerName is either Facebook/Google responseType is either token/code domain your domain in cognito userpool config redirectSignIn your redirect sign in in Cognito User Pool Config

You will need to call window.location.assign({the url generated above}). When user clicks the button, it will redirect to either Facebook/Google page asking for Account/Permission.

As for as I know, Facebook/Google dialog for custom UI is not yet supported.

Example code from AWS Amplify

import { Auth } from 'aws-amplify';

const config = Auth.configure();
const { 
    domain,  
    redirectSignIn, 
    redirectSignOut,
    responseType } = config.oauth;

const clientId = config.userPoolWebClientId;
// The url of the Cognito Hosted UI
const url = 'https://' + domain + '/login?redirect_uri=' + redirectSignIn + '&response_type=' + responseType + '&client_id=' + clientId;

// Launch hosted UI
window.location.assign(url);

Link: https://aws-amplify.github.io/docs/js/authentication

Another thing, you can link federated identity to a user pool account. https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CognitoIdentityServiceProvider.html#adminLinkProviderForUser-property