Hi all. I’m trying to solve a problem I’ve encountered few days ago but I really can’t understand how.
Here’s the problem: as only /authorize can be used to grant a DM-capable access token and my app needs that ability, I have to use /authorize the first time a user try to access it. Then, on subsequent auths, I’d like to use /authenticate to auto-redirect him to my callback url. Ok. Perfect. But…how can I understand if the user has already authorized my app? I mean, when I obtain the acces token I know “everything” about the logged user but how can I know, for example, his ID o screen name BEFORE the redirection? If I know the user ID or screen name I can check on my DB if the user has already authorized my app. If so, I redirect him to an /authenticate url, otherwise to a /authorize.
For example, whit https://twitter.com/sessions/present.json you can understand if there is a user logged or not. I’d like something like that (or more “difficult”, of course) to know his screen name or ID too. Is that possible?