UoE Auto Login UserScript

uoe_auto_login.js

// ==UserScript==
// @name         UoE Auto Login
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Auto Login on University of Edinburgh websites
// @author       Jiaxun Yang
// @match        *://www.ease.ed.ac.uk/*
// @match        *://www.myed.ed.ac.uk/*
// @match        *://www.learn.ed.ac.uk/*
// @match        *://www.ed.ac.uk/*
// @match        *://www.wiki.ed.ac.uk/*
// @run-at       document-idle
// @icon         https://www.google.com/s2/favicons?sz=64&domain=ed.ac.uk
// @grant        none
// ==/UserScript==

// FILL YOUR CREDENTIALS HERE
var uun = "";
var password = "";

(function() {
    // For ease login page
    if (location.hostname === "www.ease.ed.ac.uk") {
        if (uun == "" || password == "") {
            alert("Please fill your credentials in user script!")
            return;
        }

        // Input UUN
        if (location.pathname === "/cosign.cgi") {
            document.getElementById("login").value = uun;
            document.getElementById("submit").click();
        }

        // Input password
        if (location.pathname === "/login/") {
            document.getElementById("password").value = password;
            document.getElementById("submit").click();
        }
    }

    if (location.hostname === "www.myed.ed.ac.uk") {
        // MyEd use React to generate this element, so we must use observer
        function waitForElm(elmId) {
            return new Promise(resolve => {
                if (document.getElementById(elmId)) {
                    return resolve(document.getElementById(elmId));
                }

                const observer = new MutationObserver(mutations => {
                    if (document.getElementById(elmId)) {
                        resolve(document.getElementById(elmId));
                        observer.disconnect();
                    }
                });

                observer.observe(document.body, {
                    childList: true,
                    subtree: true
                });
            });
        }

        waitForElm('login-btn').then((btn) => {
            btn.click();
        });
    }

    if (location.hostname === "www.learn.ed.ac.uk") {
        // Hanlde Login button on homepage
        const div = document.getElementsByClassName('easelogin-bt');
        if (div) {
            div.item(0).click();
        }
        // Handle login button on login page
        const div1 = document.getElementById('ease');
        if (div1) {
            div1.getElementsByTagName('a')[0].click();
        }
    }

    if (location.hostname === "www.ed.ac.uk") {
        const loginLinkElm = document.getElementsByClassName('footer-login-link');
        if (loginLinkElm) {
            loginLinkElm.item(0).href.click()
        }
    }

    if (location.hostname === "www.wiki.ed.ac.uk") {
        const loginLinkElm = document.getElementById('login-link');
        if (loginLinkElm) {
            loginLinkElm.click()
        }
    }
})();