walnut_launchpad.html/js/services/auth-service.js

app.factory('Auth', [
  '$rootScope', 'localStorageService', '$location', 'azp@oauth3.org'
, function($rootScope, localStorageService, $location, Oauth3) {

  var dapSession = 'dap-session';
  var dapSessions = 'dap-sessions';

  var Auth = {
    setUser: function (currentUser) {
      localStorageService.set('userAuth', JSON.stringify(currentUser));
    },
    isLoggedIn: function () {
      Auth.restore();

      return Auth.session || false;
    },
    getProfile: function (profile) {
      Auth.restore();

      return Auth.session || false;
    }
  , add: function (session) {
      var obj = JSON.parse(localStorage.getItem(dapSessions) || 'null') || {};
      var dapName = 'dap-' + session.subject + '|' + session.issuer;

      console.log('session', session);

      Auth.session = session;
      Auth.sessions.push(session);

      localStorage.setItem(dapName, JSON.stringify(session));
      localStorage.setItem(dapSession, dapName);
      obj[dapName] = true;
      localStorage.setItem(dapSessions, JSON.stringify(obj));
    }
  , restore: function () {
      var dapName = localStorage.getItem(dapSession);
      Auth.sessions.length = 0; // don't overwrite with a new array, keep original references

      (Object.keys(JSON.parse(localStorage.getItem(dapSessions) || 'null') || {})).forEach(function (name) {
        var session = JSON.parse(localStorage.getItem(name) || 'null');

        if (session) {
          session.email = session.subject;
        }

        if (dapName === name) {
          Auth.session = session;
        }

        Auth.sessions.push(session);
      });

      return Auth.session;
    }
  , signOut: function () {
    localStorage.clear();
  }
  , sessions: []
  , session: null
  };

  return Auth;
}]);