How to integrate CI3 with AWS Cognito

I set up a user pool in AWS Cognito that has a username and password.

While I can test the solution using basic html files I would like to know how I can integrate
AWS Cognito into my CI3 application so that it handles the login/logout process.

1. How can I determine who has logged in so that the CI3 application can enforce access rights to certain sections of the application.
2. How do I get the Network->Payload form data such as the username and password?


Ahirsi