Google Maps remember me

Remembers your last used Google (Maps) user

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Google Maps remember me
// @namespace    http://tampermonkey.net/
// @version      1.3
// @description  Remembers your last used Google (Maps) user
// @author       JKamsker
// @grant        none
// @run-at       document-start
// @license      MIT

// @match        *://www.google.com/*
// @match        *://www.google.at/*
// @match        *://www.google.ad/*
// @match        *://www.google.ae/*
// @match        *://www.google.com.af/*
// @match        *://www.google.com.ag/*
// @match        *://www.google.al/*
// @match        *://www.google.am/*
// @match        *://www.google.co.ao/*
// @match        *://www.google.com.ar/*
// @match        *://www.google.as/*
// @match        *://www.google.com.au/*
// @match        *://www.google.az/*
// @match        *://www.google.ba/*
// @match        *://www.google.com.bd/*
// @match        *://www.google.be/*
// @match        *://www.google.bf/*
// @match        *://www.google.bg/*
// @match        *://www.google.com.bh/*
// @match        *://www.google.bi/*
// @match        *://www.google.bj/*
// @match        *://www.google.com.bn/*
// @match        *://www.google.com.bo/*
// @match        *://www.google.com.br/*
// @match        *://www.google.bs/*
// @match        *://www.google.bt/*
// @match        *://www.google.co.bw/*
// @match        *://www.google.by/*
// @match        *://www.google.com.bz/*
// @match        *://www.google.ca/*
// @match        *://www.google.cd/*
// @match        *://www.google.cf/*
// @match        *://www.google.cg/*
// @match        *://www.google.ch/*
// @match        *://www.google.ci/*
// @match        *://www.google.co.ck/*
// @match        *://www.google.cl/*
// @match        *://www.google.cm/*
// @match        *://www.google.cn/*
// @match        *://www.google.com.co/*
// @match        *://www.google.co.cr/*
// @match        *://www.google.com.cu/*
// @match        *://www.google.cv/*
// @match        *://www.google.com.cy/*
// @match        *://www.google.cz/*
// @match        *://www.google.de/*
// @match        *://www.google.dj/*
// @match        *://www.google.dk/*
// @match        *://www.google.dm/*
// @match        *://www.google.com.do/*
// @match        *://www.google.dz/*
// @match        *://www.google.com.ec/*
// @match        *://www.google.ee/*
// @match        *://www.google.com.eg/*
// @match        *://www.google.es/*
// @match        *://www.google.com.et/*
// @match        *://www.google.fi/*
// @match        *://www.google.com.fj/*
// @match        *://www.google.fm/*
// @match        *://www.google.fr/*
// @match        *://www.google.ga/*
// @match        *://www.google.ge/*
// @match        *://www.google.gg/*
// @match        *://www.google.com.gh/*
// @match        *://www.google.com.gi/*
// @match        *://www.google.gl/*
// @match        *://www.google.gm/*
// @match        *://www.google.gr/*
// @match        *://www.google.com.gt/*
// @match        *://www.google.gy/*
// @match        *://www.google.com.hk/*
// @match        *://www.google.hn/*
// @match        *://www.google.hr/*
// @match        *://www.google.ht/*
// @match        *://www.google.hu/*
// @match        *://www.google.co.id/*
// @match        *://www.google.ie/*
// @match        *://www.google.co.il/*
// @match        *://www.google.im/*
// @match        *://www.google.co.in/*
// @match        *://www.google.iq/*
// @match        *://www.google.is/*
// @match        *://www.google.it/*
// @match        *://www.google.je/*
// @match        *://www.google.com.jm/*
// @match        *://www.google.jo/*
// @match        *://www.google.co.jp/*
// @match        *://www.google.co.ke/*
// @match        *://www.google.com.kh/*
// @match        *://www.google.ki/*
// @match        *://www.google.kg/*
// @match        *://www.google.co.kr/*
// @match        *://www.google.com.kw/*
// @match        *://www.google.kz/*
// @match        *://www.google.la/*
// @match        *://www.google.com.lb/*
// @match        *://www.google.li/*
// @match        *://www.google.lk/*
// @match        *://www.google.co.ls/*
// @match        *://www.google.lt/*
// @match        *://www.google.lu/*
// @match        *://www.google.lv/*
// @match        *://www.google.com.ly/*
// @match        *://www.google.co.ma/*
// @match        *://www.google.md/*
// @match        *://www.google.me/*
// @match        *://www.google.mg/*
// @match        *://www.google.mk/*
// @match        *://www.google.ml/*
// @match        *://www.google.com.mm/*
// @match        *://www.google.mn/*
// @match        *://www.google.com.mt/*
// @match        *://www.google.mu/*
// @match        *://www.google.mv/*
// @match        *://www.google.mw/*
// @match        *://www.google.com.mx/*
// @match        *://www.google.com.my/*
// @match        *://www.google.co.mz/*
// @match        *://www.google.com.na/*
// @match        *://www.google.com.ng/*
// @match        *://www.google.com.ni/*
// @match        *://www.google.ne/*
// @match        *://www.google.nl/*
// @match        *://www.google.no/*
// @match        *://www.google.com.np/*
// @match        *://www.google.nr/*
// @match        *://www.google.nu/*
// @match        *://www.google.co.nz/*
// @match        *://www.google.com.om/*
// @match        *://www.google.com.pa/*
// @match        *://www.google.com.pe/*
// @match        *://www.google.com.pg/*
// @match        *://www.google.com.ph/*
// @match        *://www.google.com.pk/*
// @match        *://www.google.pl/*
// @match        *://www.google.pn/*
// @match        *://www.google.com.pr/*
// @match        *://www.google.ps/*
// @match        *://www.google.pt/*
// @match        *://www.google.com.py/*
// @match        *://www.google.com.qa/*
// @match        *://www.google.ro/*
// @match        *://www.google.ru/*
// @match        *://www.google.rw/*
// @match        *://www.google.com.sa/*
// @match        *://www.google.com.sb/*
// @match        *://www.google.sc/*
// @match        *://www.google.se/*
// @match        *://www.google.com.sg/*
// @match        *://www.google.sh/*
// @match        *://www.google.si/*
// @match        *://www.google.sk/*
// @match        *://www.google.com.sl/*
// @match        *://www.google.sn/*
// @match        *://www.google.so/*
// @match        *://www.google.sm/*
// @match        *://www.google.sr/*
// @match        *://www.google.st/*
// @match        *://www.google.com.sv/*
// @match        *://www.google.td/*
// @match        *://www.google.tg/*
// @match        *://www.google.co.th/*
// @match        *://www.google.com.tj/*
// @match        *://www.google.tl/*
// @match        *://www.google.tm/*
// @match        *://www.google.tn/*
// @match        *://www.google.to/*
// @match        *://www.google.com.tr/*
// @match        *://www.google.tt/*
// @match        *://www.google.com.tw/*
// @match        *://www.google.co.tz/*
// @match        *://www.google.com.ua/*
// @match        *://www.google.co.ug/*
// @match        *://www.google.co.uk/*
// @match        *://www.google.com.uy/*
// @match        *://www.google.co.uz/*
// @match        *://www.google.com.vc/*
// @match        *://www.google.co.ve/*
// @match        *://www.google.co.vi/*
// @match        *://www.google.com.vn/*
// @match        *://www.google.vu/*
// @match        *://www.google.ws/*
// @match        *://www.google.rs/*
// @match        *://www.google.co.za/*
// @match        *://www.google.co.zm/*
// @match        *://www.google.co.zw/*
// @match        *://www.google.cat/*
// ==/UserScript==

(function () {
  "use strict";

  function getLocalStorageKey() {
    if (window.location.href.includes("/maps")) {
      return "authuserIdMaps";
    } else {
      return "authuserIdGoogle";
    }
  }

  function getAuthUserId() {
    let localStorageKey = getLocalStorageKey();
    let authuserId = localStorage.getItem(localStorageKey);
    return authuserId;
  }

  function ensureAuthUser() {
    let url = new URL(window.location.href);
    let authUserIdIsSet = url.search.indexOf("authuser=") !== -1;
    if (!authUserIdIsSet) {
      let authuserId = getAuthUserId();
      if (!authuserId) {
        return;
      }
      url.search += (url.search ? "&" : "?") + "authuser=" + authuserId;
      window.location.href = url.toString();
    }

    if (authUserIdIsSet) {
      let authuserId = url.searchParams.get("authuser");
      let localStorageKey = getLocalStorageKey();
      let storedAuthuserId = localStorage.getItem(localStorageKey);
      if (authuserId !== storedAuthuserId) {
        localStorage.setItem(localStorageKey, authuserId);
      }
    }
  }

  function applyFixes() {
    ensureAuthUser();
  }

  applyFixes();

  fixGoogleMapsUrl();

  window.addEventListener("popstate", function () {
    applyFixes();
  });

  const originalPushState = history.pushState;
  const originalReplaceState = history.replaceState;

  history.pushState = function () {
    originalPushState.apply(this, arguments);
    applyFixes();
  };

  history.replaceState = function () {
    originalReplaceState.apply(this, arguments);
    applyFixes();
  };
})();