Embed Power bi report with 2nd party Authentication

on Global company with global customer, I need to provide power bi report hyperlink or say need to embed  pbi report .

Bt website and pbi use different/independent authentication.

website use some inhouse developeed active directory while PBI uses Azure Active directory.

so need is

1. user(global) login to website click on PbI report name(hyerlink)

2. that link passes user info to some code/script  to validates and process  user information for user group etc( as in company inhouse active directory). code may be webscript or server side code.

3. After that code/prgramme returns/open report on pbi portal with relevant data based on RLS  on user group.

Thanks