Oauth vs Web Login

[Chris Fields]

So, I have followed the documentation for authenticating via oauth implicit:

https://dev.groupme.com/tutorials/oauth

It works as documented, and I am able to use the API.

The problem that I have run into is that the URL:

https://oauth.groupme.com/oauth/authorize?client_id=CLIENT_IDonly provides email and password authentication.

GroupMe, either through a web or mobile app, supports multiple identity providers (Facebook, Apple, Microsoft). So, any user I want to support has probably used one of these other forms and does not have a standard email/password.  In my testing, most users use one of these other methods and have their groups registered under that account.

To solve this, I have tried to use the session created from the login at https://web.groupme.com, but unfortunately, it is not the same as the oauth.groupme.com session.

My goal is:

1) Direct user to correct login format for their group me account

2) Redirect back to my application as defined in    https://dev.groupme.com/tutorials/oauth 

3) Use the token to support the user in my application.

if step 1, is the standard web.groupme.com it fails, but this is the only method that supports Facebook, Microsoft, and Apple.

Anyone had luck with this?   Also,  I am worried that groupme is close to stopping the oauth method given the questions on this group.