Userscript to solve learingapps.org exercises

learningapps.user.js

// ==UserScript==
// @name         Learningapps.org solver
// @namespace    https://mvolfik.github.io/
// @version      0.1
// @description  Add button to autofill learningapps.org
// @author       Matěj Volf
// @match        https://learningapps.org/tools/*/watch?id=*
// @downloadUrl  https://gist.github.com/mvolfik/af53d9f52825bf1c4911d8536980fb43/raw/liveworksheets.user.js
// @updateUrl    https://gist.github.com/mvolfik/af53d9f52825bf1c4911d8536980fb43/raw/liveworksheets.user.js
// @grant        none
// ==/UserScript==

/* globals $ */
(function() {
    'use strict';

    const runners = {
        "text_gaps": () => {
            const solution = {};
            for (const item of window.MODEL) {
                solution[item.index] = item.correctAnswer;
            }

            $(".gap-dropdown .gap").each((i, el) => {
                const data = $(el).data();
                if (data.value === solution[data.index]) {
                    el.click();
                }
            });
        }
    };

    const supported_tools = [{tool: "140", version: "41", func: "text_gaps"}]
    const tool = window.AppClientAppData.tool;
    const version = window.AppClientAppData.version;

    for (const t of supported_tools) {
        if (tool === t.tool && version === t.version) {
            const but = document.createElement("div");
            but.style["margin-right"] = "0.2em";
            but.classList.add("largeBlueButton");
            but.innerHTML = "<i class='glyphicon glyphicon-pencil'></i>";
            but.addEventListener("click", runners[t.func]);

            document.getElementById("checksolutionBtnPanel").insertAdjacentElement("afterbegin", but);
            return
        }
    }
    alert("This tool isn't supported. Seems like you'll have to do some work today.");
})();