Brainly Answer Revealer

Reveals the answers on brainly, even if you are restricted.

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         Brainly Answer Revealer
// @namespace    https://joey585.com
// @version      1.00
// @description  Reveals the answers on brainly, even if you are restricted.
// @author       Joey585
// @match        https://brainly.com/question/*
// @icon         https://media.cdnandroid.com/item_images/770840/imagen-brainly-0thumb.jpeg
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    // formats text
    function unicodeToChar(text) {
        return text.replace(/\\u[\dA-F]{4}/gi,
            function (match) {
                return String.fromCharCode(parseInt(match.replace(/\\u/g, ''), 16));
            });
    }

    // finds the content of the question and answer
    const data = document.getElementsByClassName("js-main-question").item(0).dataset.z;
    if(data.length > 20)
    {
        let index = data.indexOf('"content":"') + 11;
        console.log(index)
        const answers = [];
        while(true){
            const begin = data.indexOf('"content":"', index) + 11;
            if(begin < index){
                break
            }
            index = data.indexOf('"mark"', begin)-2
            answers.push(data.substring(begin , index))
            const tempi = data.indexOf("comments", index);
            if(tempi > index){
                index = data.indexOf( '}',tempi)
            }
            if(index < begin)
            {break}
            console.log("begin" + begin)
            console.log("index" + index)
            console.log("comments" + tempi)
            console.log("==================")
        }
        // logs the answer and starts to format it into readability
        console.log(answers)
        const regex = /(<script(\s|\S)*?<\/script>)|(<style(\s|\S)*?<\/style>)|(<!--(\s|\S)*?-->)|(<\/?(\s|\S)*?>)/g
        const bodyDoc = document.getElementById('question-sg-layout-container');
        // waits 3 seconds to look for the get answers button
        setTimeout(() => {
            const valid = bodyDoc.getElementsByClassName('brn-qpage-next-answer-box__blockade')
            if (valid) {
                const answerButton = bodyDoc.getElementsByClassName('sg-animation-fade-in-fast brn-qpage-next-question-box__actions')
                const answersPresent = answers.length
                // checks if there is one question
                if (answersPresent === 1) {
                    answerButton[0].lastElementChild.innerHTML = `<strong>Answer 1:</strong><br>${answers[0].replaceAll(regex, ' ')}`
                    return alert('Only one answer!')
                }
                // replaces the button with the answers after 3 seconds
                answerButton[0].lastElementChild.innerHTML = `<strong>Answer 1:</strong><br>${answers[0].replaceAll(regex, ' ')}<hr><hr><strong>Answer 2:</strong><br>${answers[1].replaceAll(regex, ' ')}`
            } else {
                return alert('Answers are visible!');
            }
        }, 3000)

        // more formatting
        removeElms("brn-kodiak-answer__unlock")
        removeElms("brn-kodiak-answer__preview-end")
        const answerBoxes = document.getElementsByClassName("brn-kodiak-answer__content");
        for(let i = 0; i<answerBoxes.length ; i++){
            answerBoxes[i].innerHTML = decodeURIComponent(unicodeToChar(answers[i].replace(/<\\\//g , "</")))
        }

        function removeElms(classname){
            const paras = document.getElementsByClassName(classname);
            while(paras[0]) {
                paras[0].parentNode.removeChild(paras[0]);
            }
        }
    }
    else
    {
        window.alert('This will only work if you are signed in.')
    }
    // CREDITS: Subatomicmc (Found the answers) I just rewrote it to work.
    // Author: Joey585
    // Discord: Joey585#0585
    // Twitter: @Joey585Official
})();