Khan Academy Problem Solver

Here is a Khan Solver slightly disguised as a color picker.

当前为 2021-06-14 提交的版本,查看 最新版本

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name         Khan Academy Problem Solver
// @version      1.0
// @description  Here is a Khan Solver slightly disguised as a color picker.
// @author       Logzilla6
// @match        https://www.khanacademy.org/*
// @grant        none
// @namespace https://greasyfork.org/users/783447
// ==/UserScript==

(function () {
    'use strict';
    window.loaded = false;
	alert("Solver Will Say Answers For Problem 1 and 2,"+"\n"+ "then after solving problem 1, Solver Will then give answer to 3, then 4 and so on.");
    class Answer {
        constructor(answer, type) {
            this.body = answer;
            this.type = type;
        }

        get isMultiChoice() {
            return this.type == "multiple_choice";
        }

        get isFreeResponse() {
            return this.type == "free_response";
        }

        get isExpression() {
            return this.type == "expression";
        }

        get isDropdown() {
            return this.type == "dropdown";
        }

        log() {
            const answer = this.body;
            const style = "color: coral; -webkit-text-stroke: .5px black; font-size:24px; font-weight:bold;";

            answer.map(ans => {
                if (typeof ans == "string") {
                    if (ans.includes("web+graphie")) {
                        this.body[this.body.indexOf(ans)] = "";
                        this.printImage(ans);
                    } else {
                        answer[answer.indexOf(ans)] = ans.replaceAll("$", "");
                    }
                }
            });

            const text = answer.join("\n");
            if (text) {
                console.log(`${text.trim()}`, style);
            }
        }

        printImage(ans) {
            const url = ans.replace("![](web+graphie", "https").replace(")", ".svg");
            const image = new Image();

            image.src = url;
            image.onload = () => {
                const imageStyle = [
                    'font-size: 1px;',
                    'line-height: ', this.height % 2, 'px;',
                    'padding: ', this.height * .5, 'px ', this.width * .5, 'px;',
                    'background-size: ', this.width, 'px ', this.height, 'px;',
                    'background: url(', url, ');'
                ].join(' ');
                console.log('', imageStyle);
            };
        }
    }

    const originalFetch = window.fetch;
    window.fetch = function () {
        return originalFetch.apply(this, arguments).then((res) => {
            if (res.url.includes("/getAssessmentItem")) {
                const clone = res.clone();
                clone.json().then(json => {
                    let item, question;

                    try {
                        item = json.data.assessmentItem.item.itemData;
                        question = JSON.parse(item).question;
                    } catch {
                        let errorIteration = () => { return localStorage.getItem("error_iter") || 0; }
                        localStorage.setItem("error_iter", errorIteration() + 1);

                        if (errorIteration() < 4) {
                            return location.reload();
                        } else {
                            return alert("%c An error occurred", "color: red; font-weight: bolder; font-size: 20px;");
                        }
                    }

                    if (!question) return;

                    Object.keys(question.widgets).map(widgetName => {
                        switch (widgetName.split(" ")[0]) {
                            case "numeric-input":
                                return freeResponseAnswerFrom(question).log();
                            case "radio":
                                return multipleChoiceAnswerFrom(question).log();
                            case "expression":
                                return expressionAnswerFrom(question).log();
                            case "dropdown":
                                return dropdownAnswerFrom(question).log();
                        }
                    });
                });
            }

            if (!window.loaded) {
                console.clear();
                console.log("%c Color Picker ", "color: mediumvioletred; -webkit-text-stroke: .5px black; font-size:40px; font-weight:bolder; padding: .2rem;");
                console.log("%c Created by Logzilla6", "color: white; -webkit-text-stroke: .5px black; font-size:15px; font-weight:bold;");
                window.loaded = true;
            }

            return res;
        })
    }

    function freeResponseAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.answers) {
                return widget.options.answers.map(answer => {
                    if (answer.status == "correct") {
                        return alert("Answer:    If it is really long, just paste the whole thing in!"+"\n"+answer.value);
                    }
                });
            }
        }).flat().filter((val) => { return val !== undefined; });

        return new Answer(answer, "free_response");
    }

    function multipleChoiceAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.choices) {
                return widget.options.choices.map(choice => {
                    if (choice.correct) {
                        return alert("Answer:"+"\n"+choice.content);
                    }
                });
            }
        }).flat().filter((val) => { return val !== undefined; });

        return new Answer(answer, "multiple_choice");
    }

    function expressionAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.answerForms) {
                return widget.options.answerForms.map(answer => {
                    if (Object.values(answer).includes("correct")) {
                        return alert("Answer:"+"\n"+answer.value);
                    }
                });
            }
        }).flat();

        return new Answer(answer, "expression");
    }

    function dropdownAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.choices) {
                return widget.options.choices.map(choice => {
                    if (choice.correct) {
                        return alert("Answer:"+"\n"+choice.content);
                    }
                });
            }
        }).flat();

        return new Answer(answer, "dropdown");
    }
})();