Amplify-js: Merge two accounts in Cognito created with same email (email and social)

[johanrin]

Which Category is your question related to?
Authentication

What AWS Services are you utilizing?
Amazon Cognito Hosted UI

Provide additional details e.g. code snippets
In my app, I have Amazon Cognito Hosted UI configured to handle Authentication by email and social (facebook and google).

_The problem:_
When a user create an account by email (ex: gmail) and later sign up by social (ex: same gmail), I have two accounts created in Cognito.

_Question:_
How merge these two accounts created with the same email?

[jkeys-ecg-nmsu]

The API you need to use is adminLinkProviderForUser, I believe.

I don't think Amplify currently has a built-in federation mechanism, i.e. automatically calling adminLinkProviderForUser when a Cognito-authenticated user signs in through social provider.

[undefobj]

This is potentially a candidate for Triggers or Admin Queries as part of the following RFC: https://github.com/aws-amplify/amplify-cli/issues/766

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[eoghanatfacet]

This feature request needs to be maintained open until it's delivered with RFC: aws-amplify/amplify-cli#766

[ricky-sb]

What's the current solution to this? Is it running a Lambda using a pre-signup trigger and AdminLinkProviderForUser?

[jkeys-ecg-nmsu]

@ricky-sb that was my thought eight months ago, at least, when it was a bit fresher. I will say though that I think if you have separate identities for a single user and you want to federate them silently on the backend, AdminLinkProviderForUser is the correct API to hit.

[sammartinez]

@johanrin Cognito Lambda Triggers are now configurable via Amplify CLI. Closing this request as the RFC is closed and the request is complete.