Mathswatch Answer Viewer

mini.js

javascript:function getCookie(e){const t=`; ${document.cookie}`.split(`; ${e}=`);if(2===t.length)return t.pop().split(";").shift()}async function getRequest(e,t){const s=await fetch(e,{headers:{accept:"*/*","accept-language":"en-GB,en-US;q=0.9,en;q=0.8","cache-control":"no-cache",pragma:"no-cache","sec-ch-ua":'"Google Chrome";v="117", "Not;A=Brand";v="8", "Chromium";v="117"',"sec-ch-ua-mobile":"?0","sec-ch-ua-platform":'"Windows"',"sec-fetch-dest":"empty","sec-fetch-mode":"cors","sec-fetch-site":"same-origin","x-csrf-token":getCookie("_csrf")},referrer:t,referrerPolicy:"strict-origin-when-cross-origin",body:null,method:"GET",mode:"cors",credentials:"include"});return await s.json()}async function getAnswers(){const e=document.querySelector("#studentmodal > div > div:nth-child(4) > div > div.questioncolumn > div > div.progressblock > div > div.col-sm-10.col-xs-8 > div > div:nth-child(1) > progressbar"),t=currentPage.split("/");let s="Answers Are:";if(100==parseInt(e.getAttribute("value"))&&7==t.length&&"assignment"==t[4]){const e=t[5],n=t[6],c=await getRequest(`https://vle.mathswatch.co.uk/duocms/api/answers?assignedwork_id=${e}`,currentPage);if("success"==c.status){c.data.forEach((e=>{e.question_id==n&&e.answer.forEach((e=>{0!=e.marks&&(e.text.constructor==Array?e.text.forEach((e=>{null!=e&&(s+=`\n${e}`)})):s+=`\n${e.text}`)}))}))}return[s,n]}return null}let currentPage=location.href;setInterval((async function(){if(currentPage!=location.href){currentPage=location.href;const[e,t]=await getAnswers(),s=document.querySelector("#studentmodal > div > div:nth-child(4) > div > div > div > div.row > div");if(null!=e){s.innerHTML="";const n=document.createElement("img");n.src=`https://vle.mathswatch.co.uk/images/questions/question${t}.png`,n.className="col-sm-offset-3 col-sm-6 col-xs-12",s.appendChild(n);const c=document.createElement("p");c.innerText+=e,c.className="col-sm-offset-3 col-sm-6 col-xs-12",c.style.fontWeight=700,c.style.fontSize="x-large",s.appendChild(c)}}}),500),console.log("Answer Viewer should be ready: ✅"),alert("Answer Viewer should be ready: ✅\nReloading the page will remove the script.");

singleLine.js

eval(await (await fetch('https://gist.githubusercontent.com/Apearson75/2247c8190d797ed9427bd36e5a0c7c95/raw/fb1b3e94db7513babb8dee450e2bd478b0af9988/mini.js')).text())

source.js

function getCookie(name) {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop().split(';').shift();
  }

async function getRequest(url, referrer) {
    const req = await fetch(url, {
        "headers": {
            "accept": "*/*",
            "accept-language": "en-GB,en-US;q=0.9,en;q=0.8",
            "cache-control": "no-cache",
            "pragma": "no-cache",
            "sec-ch-ua": "\"Google Chrome\";v=\"117\", \"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"117\"",
            "sec-ch-ua-mobile": "?0",
            "sec-ch-ua-platform": "\"Windows\"",
            "sec-fetch-dest": "empty",
            "sec-fetch-mode": "cors",
            "sec-fetch-site": "same-origin",
            "x-csrf-token": getCookie('_csrf')
        },
        "referrer": referrer,
        "referrerPolicy": "strict-origin-when-cross-origin",
        "body": null,
        "method": "GET",
        "mode": "cors",
        "credentials": "include"
    });
    const json = await req.json();
    return json;
}

async function getAnswers() {
    const progressBar = document.querySelector("#studentmodal > div > div:nth-child(4) > div > div.questioncolumn > div > div.progressblock > div > div.col-sm-10.col-xs-8 > div > div:nth-child(1) > progressbar");

    const parsedURL = currentPage.split('/');

    let answers = 'Answers Are:';

    if (parseInt(progressBar.getAttribute('value')) == 100 && parsedURL.length == 7 && parsedURL[4] == "assignment") {
        const assignmentId = parsedURL[5];
        const questionId = parsedURL[6];
        const req = await getRequest(`https://vle.mathswatch.co.uk/duocms/api/answers?assignedwork_id=${assignmentId}`, currentPage);
        if (req.status == "success") {
            const questions = req.data;

            questions.forEach(q => {
                if (q.question_id == questionId) {
                    q.answer.forEach(a => {
                        if (a.marks!=0) {
                            if (a.text.constructor == Array) {
                                a.text.forEach(multipleAnswer => {
                                    if (multipleAnswer != null) {
                                        answers += `\n${multipleAnswer}`;
                                    }
                                })
                            } else {
                                answers += `\n${a.text}`;
                            }
                        }
                    })
                }
            });
        }
        return [answers, questionId];
    }
    return null;
}

let currentPage = location.href;
setInterval(async function()
{
    if (currentPage != location.href)
    {

        currentPage = location.href;
        const [answers, questionId] = await getAnswers();

        const theBox = document.querySelector("#studentmodal > div > div:nth-child(4) > div > div > div > div.row > div");

        if (answers != null) {
            theBox.innerHTML = '';
            const questionImage = document.createElement('img');
            questionImage.src = `https://vle.mathswatch.co.uk/images/questions/question${questionId}.png`;
            questionImage.className="col-sm-offset-3 col-sm-6 col-xs-12";
            theBox.appendChild(questionImage);
            

            const answerThing = document.createElement('p');
            answerThing.innerText += answers;
            answerThing.className="col-sm-offset-3 col-sm-6 col-xs-12";
            answerThing.style.fontWeight = 700;
            answerThing.style.fontSize = "x-large"
            theBox.appendChild(answerThing);
        }
    }
}, 500);

console.log("Answer Viewer should be ready: ✅");
alert("Answer Viewer should be ready: ✅\nReloading the page will remove the script.");

How exactly is the script supposed to work? After it's in the console nothing seems to happen

not work because the api doesnt cointain the answer, is there any solution?