google-sso-picker.js

// ==UserScript==
// @name         Google SSO Account Picker
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://accounts.google.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=accounts.google.com
// @grant        none
// @run-at       document-end
// @noframes
// ==/UserScript==

function main() {
  const myEmail = "[email protected]";
  const patterns = [
    /https?:\/\/wd3\.myworkday\.com\/gojek/,
    /https?:\/\/accounts\.google\.com\/o\/saml2\/idp/,
  ];

  const elements = Array.from(document.querySelectorAll(`[data-authuser]`));
  const el = elements.find((e) => e.dataset.identifier == myEmail);

  if (!el) {
    console.log("TamperMonkey: Account not found");
    return;
  }

  const url = new URL(window.location.href);
  const redirectUri = url.searchParams.get("redirect_uri");
  const continueParams = url.searchParams.get("continue");
  for (let p of patterns) {
    if (!p.test(redirectUri) && !p.test(continueParams)) continue;
    console.log("TamperMonkey: Matched: " + redirectUri);

    const isBusy = document.querySelector(
      'div[role="presentation"][tabindex="-1"]',
    );
    const hasBackButton = document.querySelector('div[role="button"]#next');

    if (isBusy) {
      console.log("Page is busy...");
    }

    // Close page if there was "unknown error"
    if (hasBackButton) {
      window.close();
    }

    // Try clicking until page gets busy
    if (!isBusy) {
      console.log("Clicking...");
      console.log(el);
      el.click();
    }
  }
}

(async function () {
  "use strict";

  console.log("TamperMonkey: Running...");
  await new Promise((resolve) => setTimeout(resolve, 500));
  setInterval(main, 500);
})();