How to use the googleapis.analytics function in googleapis

//   analytics browsers "Site Name or ID" - Get browsers percentage access with "Site Name or ID"
//   analytics show email - Get email account api configured to give access to others analytics profiles.
//
// Notes:
//   
//
// Author:
//   Plan B Comunicação 

var google = require("googleapis");
require("date-utils");

var HubotAnalytics = require('./lib/HubotAnalytics.js');
var hubotAnalytics = new HubotAnalytics();

var analytics = google.analytics("v3");
var globalError;

module.exports = function(robot) {
  hubotAnalytics.profilesNames = robot.brain.get('profilesNames');

  try {
    var GOOGLE_API_CLIENT_EMAIL = process.env.GOOGLE_API_CLIENT_EMAIL;
    var GOOGLE_API_PRIVATE_KEY = process.env.GOOGLE_API_PRIVATE_KEY.replace(/\\n/g, "\n");

    var oauth2Client = new google.auth.JWT(GOOGLE_API_CLIENT_EMAIL, null, GOOGLE_API_PRIVATE_KEY, ["https://www.googleapis.com/auth/analytics.readonly"], null);
  } catch(err) {
    globalError = "Error on load - check your environments variables GOOGLE_API_CLIENT_EMAIL and GOOGLE_API_PRIVATE_KEY.";
  }

  robot.hear(/analytics help/i, function(res)
  {

function getAnalytics() {
    if (!(jwt && analytics) && ENABLED) {
        jwt = new google.auth.JWT();
        jwt.fromJSON(require(AUTH_PATH));
        jwt = Promise.promisifyAll(
            jwt.createScoped('https://www.googleapis.com/auth/analytics.readonly')
        );
        analytics = google.analytics({ version: 'v3', auth: jwt });

        Promise.promisifyAll(analytics.data.ga);
        Promise.promisifyAll(analytics.data.realtime);
    }

    return jwt.authorizeAsync().then(() => analytics);
}

"use strict";

let __pluginManager = require('./plugins_manager');

let google = require('googleapis');
let CLIENT_ID = '1088344376413-220618hg1c06d8p3bitjsbt2k74g1l68.apps.googleusercontent.com';
let CLIENT_SECRET = 'cBnnCAb2oaQc4WlxQh8Og7oj';
let oauth2 = new google.auth.OAuth2(CLIENT_ID, CLIENT_SECRET, 'postmessage');
let analytics = google.analytics('v3');
let SERVICE_ACCOUNT_EMAIL = '1088344376413-220618hg1c06d8p3bitjsbt2k74g1l68@developer.gserviceaccount.com';
let SERVICE_ACCOUNT_KEY_FILE = __base + 'config/env/techmaster_key.pem';
let jwt = new google.auth.JWT(
    SERVICE_ACCOUNT_EMAIL,
    SERVICE_ACCOUNT_KEY_FILE,
    null,
    ['https://www.googleapis.com/auth/analytics.readonly']);
let access_token = '';
let expiry_date = 0;

function GA() {
    let self = this;

    this.init = function () {
        __pluginManager.loadAllPlugins();

var path = require('path')
  , fs = require('fs')
  , inquirer = require('inquirer')
  , async = require('async')
  , google = require('googleapis')
  , manifest = require('../../src/manifest')
  , utils = require('../utils')
  , exec = require('child_process').exec
  , ejs = require('ejs');

var analytics = google.analytics('v3');

var CWD = process.cwd();

module.exports = function(program, addToReadyQue) {

  var PELLET_PROJECT_PATH = (program.pelletConfig && program.pelletConfig._filepath && path.dirname(program.pelletConfig._filepath)) || CWD;

  program
    .command('gaexperiments')
    .alias('gaexp')
    .description('Build GA A/B/N experiment config')
    .option('--output 

jwtClient.authorize((err) => {
        if (err) {
          return reject(err);
        }
        const analytics = google.analytics('v3');
        return apiUtils.queryData(analytics, jwtClient);
      });
    });

var google = require("googleapis");
var ga = google.analytics("v3");

var moment = require("moment");

module.exports = function (app) {
    var gaQuery = function (req, res, options) {
        var jwt = new google.auth.JWT(
          options.serviceEmail,
          options.pemFilename,
          null,
          ["https://www.googleapis.com/auth/analytics.readonly"],
          null);

        if (app.get("env") !== "development") {
            res.header("Access-Control-Allow-Origin", options.origin);
        }

var initializeAnalytics = function(err, authClient, next) {
    var analytics = google.analytics({
        version: 'v3',
        auth: authClient
    });

    next(null, analytics);
};