CAS with delegated authentication and custom UI

[Peyo Tzolov]

Hi, 

We've been using CAS for over a year. We use the CAS REST API for creating and validating service tickets.

We now need to use CAS to delegate authentication to an openID connect provider. I have not been able to find any documentation around CAS delegated authentication with the CAS REST API (not using the provided cas UI)

Can anyone help? My current strategy is to reverse engineer what the CAS UI does, and try to implement those calls from our backend to CAS. This is pretty hacky, and I wouldn't want to go to production with this strategy. 

Thanks!