gdrive_get_file.js

var CLIENT_ID = ""
var CLIENT_SECRET = ""
var REDIRECT_URL = ""
var REFRESH_TOKEN = "";


var async = require('async');
var google = require('googleapis');
var OAuth2 = google.auth.OAuth2;
var oauth2Client = new OAuth2(CLIENT_ID, CLIENT_SECRET, REDIRECT_URL);
oauth2Client.setCredentials({
  refresh_token: REFRESH_TOKEN
});
google.options({ auth: oauth2Client }); // set auth as a global default

var drive = google.drive({ version: 'v2', auth: oauth2Client });

async.waterfall([
  function(next) {
    drive.files.list(next);
  },
  function(result, response, next) {
    drive.files.get({
      fileId: result.items[0].id
    }, next);
  }
], function(error, result, response) {
  console.log(result);
});