feat: add auto login script

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 Here I will outline the changes I've made over time...
 
+### 20240125
+
+- Added a script to automatically click the login button on the Blackboard login page if your details are saved in your browser (see the [README][README] for instructions)
+
 ### 20240123
 
 - Restyled the asides in course pages (in my course, they're labelled "Learning Outcomes" on each week's section)

README.md

@@ -25,6 +25,7 @@ other UoM websites.
     - [Highlight current modules](https://greasyfork.org/en/scripts/478967-uom-blackboard-highlight-current-modules)
     - [Video keyboard shortcuts](https://greasyfork.org/en/scripts/479044-uom-blackboard-video-keyboard-shortcuts)
     - [Module list images](https://greasyfork.org/en/scripts/479199-uom-blackboard-add-course-images)
+    - [Auto login](https://greasyfork.org/en/scripts/485669-uom-blackboard-auto-login)
 
 ### Atkinson Hyperlegible
 

scripts/auto_login.js

@@ -0,0 +1,37 @@
+// ==UserScript==
+// @name         UoM Blackboard: Auto login
+// @namespace    http://tampermonkey.net/
+// @version      20240125.00.00
+// @description  An optional accompanying script for https://github.com/adil192/BlackboardTheme, which automatically clicks the login button if your username and password are saved in the browser.
+// @author       adil192
+// @match        https://login.manchester.ac.uk/cas/login*
+// @icon         https://www.google.com/s2/favicons?sz=64&domain=manchester.ac.uk
+// @grant        none
+// @license      Unlicense
+// @downloadURL  https://github.com/adil192/BlackboardTheme/raw/main/scripts/auto_login.js
+// ==/UserScript==
+
+// @ts-check
+
+(function () {
+    'use strict';
+
+    console.log("UoM Blackboard: Auto login");
+
+    /** The username input. @type {HTMLInputElement | null} */
+    const username = document.querySelector("input#username");
+    /** The password input. @type {HTMLInputElement | null} */
+    const password = document.querySelector("input#password");
+    /** The submit button. @type {HTMLInputElement | null} */
+    const submit = document.querySelector("input[type=submit]");
+
+    if (!username || !password || !submit) {
+        console.log("UoM Blackboard: Auto login: Could not find username, password or submit button.");
+        return;
+    }
+
+    if (username.value && password.value) {
+        console.log("UoM Blackboard: Auto login: Username and password are already filled in, submitting form.");
+        submit.click();
+    }
+})();