lib 1013814 // google http client

lib 1013815 // google api client

lib 1013816 // google oauth client

lib 1013817 // jackson

lib 1013818 // google jackson2

lib 1013819 // google http client appengine

import com.google.api.client.googleapis.auth.oauth2.GoogleIdToken;

import com.google.api.client.googleapis.auth.oauth2.GoogleIdToken.Payload;

import com.google.api.client.googleapis.auth.oauth2.GoogleIdTokenVerifier;

import com.google.api.client.json.jackson2.JacksonFactory;

import com.google.api.client.http.javanet.NetHttpTransport;

static Payload googleVerifyUserToken2(S clientID, S token) ctex {

  print("Google verify started.");

  new NetHttpTransport transport;

  GoogleIdTokenVerifier verifier = new GoogleIdTokenVerifier.Builder(transport, new JacksonFactory)

    .setAudience(Collections.singletonList(clientID))

    .build();

  GoogleIdToken idToken = verifier.verify(token);

  if (idToken != null) {

    Payload payload = idToken.getPayload();

    print("Google verify confirmed: " + payload.getEmail());

    ret payload;

  }

  print("Google verify failed");

  null;

}