How to get user profile from id_token through API call - api

Question

I have an API that a applications uses, the application sends me a id_token of a already authenticated user or Google accounts.
How can I make a API call (not java script call) in ASP.net to the google API server to get the users profile information such as name, so that I can save the user in the DB for the application.
I already have a google project with a Client ID and client secret.

Answer 1

So I found a way to though asp.net API get the user information that I wanted.
using (var client = new System.Net.WebClient())
{
var uri = new Uri("https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=" + ACCESSTOKENFROMLOGGININ + "&access_type=offline");
var response = client.DownloadString(uri);
}
you response will have these fields
{
"issued_to": "",
"audience": "",
"user_id": "",
"scope": "",
"expires_in": 756,
"email": "",
"verified_email": true,
"access_type": "online"
}
Then you could make another call to get more personal information
var userInfoUri = new Uri("https://www.googleapis.com/oauth2/v2/userinfo");
var userInfoClient = new System.Net.WebClient();
client.Headers.Add("Authorization", "Bearer " + YOUACCESSToken);
and you will receive an object like this
{
"id": "",
"name": "",
"given_name": "",
"family_name": "",
"link": "",
"picture": "",`enter code here`
"locale": "en"
}