javascript - Adding Analytics API permission to a Google Sign-In authorization -

i have web app uses usual https://www.googleapis.com/auth/analytics.readonly scope on oauth button, , it's working fine. however, ability users sign in via google don't have make new login , password app. when implement that, i'd not require them hit login google, followed authorize app button - not best user experience right out of gate.

is possible add google analytics permission scope google sign-in button? if matters, it's flask app of stuff happening on front-end javascript @ moment.

need spend more time in docs. can accomplish adding scope scope: list google's example:

var startapp = function() {     gapi.load('auth2', function(){       auth2 = gapi.auth2.init({         client_id: client_id,         cookiepolicy: 'single_host_origin',         scope: 'email https://www.googleapis.com/auth/analytics.readonly'       });       attachsignin(document.getelementbyid('custombtn'));     }); }; 

the relevant doc page: https://developers.google.com/identity/sign-in/web/build-button