Get user OpenID URL without user interaction

Question

I have an packaged app in the Chrome Web Store that I'd like to transition from a paid app to a free one with in app purchases. I need to be able to detect if the current user had paid for the app previously.

To be able to use the licensing API, I need the current user's OpenID URL. I was able to get this to work using chrome.identity and a popup dialog that the user has to authorize. But it is a bad experience and kind of a scary dialog.

For hosted apps, it's possible to get the user's OpenID URL without any user interaction or authorization. (see How to skip the OpenID approval screen). It would be fantastic if somebody knows how to make this work without user interaction for packaged apps.

I've detailed some of the approaches I've tried on this chromium-apps thread. I suspect it may be possible to do this with chrome.identity.launchWebAuthFlow but I wasn't able to discover the exact incantation of parameters to google's oauth/openid endpoints to make this happen silently.

Answer 1

I think you need to refer to this Link1 Parameters

this parameters are different techniques using that you can do this task..

also To bypass the Login/approval screen refer this link2 Here in the section How to skip the OpenID approval screen the details are explained which you can use..

And In case of packaged app this should ask for permanent permission that will help in OAuth throughout the life of app..

Client Library JavaScript Based

Authentication using Library

After your comment I thought this you can bind in your app.!!

Let me know what works for you..