MCBBS Login Fix

MCBBS Login Fix.user.js

// ==UserScript==
// @name         MCBBS Login Fix
// @description  Fixed the annoying CAPTCHA bug when logging in to MCBBS.
// @author       JasonHK
// @namespace    http://jasonhk.net/
// @version      0.2-beta
// @match        http*://www.mcbbs.net/*
// @run-at       document-start
// @grant        none
// @supportURL   https://greasyfork.org/zh-TW/scripts/377605-mcbbs-login-fix
// @updateURL    https://greasyfork.org/scripts/377605-mcbbs-login-fix/code/MCBBS%20Login%20Fix.meta.js
// @downloadURL  https://greasyfork.org/scripts/377605-mcbbs-login-fix/code/MCBBS%20Login%20Fix.user.js
// ==/UserScript==

"use strict";

Object.defineProperty(window, "InitCaptcha", {
    writeable: false,
    value: ((element, callback) => {
        let handlerEmbed = ((captchaObj) => {
            let a = window.$(element);
            captchaObj.appendTo(a);
            if (element == "gt_forumdisplay_postbutton_top" || element == "gt_viewthread_fastpost_content" || element=="gt_viewthread_modaction") {
                captchaObj.onSuccess(() => {
                    setTimeout(function(){captchaObj.reset()},5000);
                });
            }
        });

        let loadGeetest = ((config) => {
            window.initGeetest({
                gt: config.gt,
                challenge: config.challenge,
                new_captcha: config.new_captcha,
                product: "embed",
                offline: !config.success
            }, handlerEmbed);
        });

        fetch(`/plugin.php?id=geetest3&model=start&t=${ new Date().getTime() }`, {
            method: "GET"
        }).then((response) => {
            if (! response.ok) throw response.error();
            return response.json();
        }).then((data) => {
            console.log(data);
            loadGeetest(data);
        }).catch((error) => {
            if (error instanceof Error) {
                switch (error.name) {
                    case "SyntaxError":
                        const regexp = /^Unexpected token (\S+?) in (JSON) at position (\d+?)$/g;
                        if (regexp.test(error.message)) {
                            console.error("Unable to fetch the CAPTCHA API, refreshing and try again...");
                            location.reload();
                        }
                        break;
                    default:
                        throw error;
                }
            } else if (error instanceof Response) {
                throw new Error(`HTTP ${ error.status }: ${ error.statusText }`);
            } else {
                throw new Error(error);
            }
        }).catch((error) => {
            console.error(`Sorry, an unexpected error has occurred!\n ${ error }`);
        });
    })
});