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Yuba Fix

可在处于被关闭状态的斗鱼鱼吧浏览和发布帖子，需要借用状态正常的鱼吧的UI

// ==UserScript==
// @name         Yuba Fix
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  可在处于被关闭状态的斗鱼鱼吧浏览和发布帖子，需要借用状态正常的鱼吧的UI
// @match        *://yuba.douyu.com/*
// @grant        none
// @license      MIT
// ==/UserScript==

(function () {
    'use strict';

    const EXCLUDE_URL = "wbapi/web/group/head";
    const TARGET_POST_URL = "https://yuba.douyu.com/wgapi/yubanc/api/feed/publish";

    const replacements = [
        { search: /=13062/g, replace: "=5496243" }, // 伟伟鱼吧id:13062 玩机器鱼吧id:5496243
        { search: /6N7nXYBpNdbl/g, replace: "W67QgJNpzd0O" } // https://yuba.douyu.com/wbapi/web/group/head?group_id=13062 => data.safe_anchor_id
    ];

    /********** 重写 fetch **********/
    const originalFetch = window.fetch;
    window.fetch = function (input, init) {
        let url = "";

        if (typeof input === "string") {
            url = input;
        } else if (input instanceof Request) {
            url = input.url;
        }

        // 排除包含 EXCLUDE_URL 的请求，不作修改
        if (url.includes(EXCLUDE_URL)) {
            return originalFetch(input, init);
        }

        // 对 URL 执行所有替换规则
        replacements.forEach(rule => {
            if (url.indexOf(rule.search.source.replace(/\\|\/|g/g, '')) !== -1) {
                url = url.replace(rule.search, rule.replace);
            }
        });

        if (typeof input === "string") {
            input = url;
        } else if (input instanceof Request) {
            input = new Request(url, input);
        }

        // 如果是 POST 请求且目标 URL 为 publish 接口，则检查并修改 body 中的参数
        if (init && init.method && init.method.toUpperCase() === "POST" && url === TARGET_POST_URL) {
            let contentType = "";
            if (init.headers) {
                if (init.headers instanceof Headers) {
                    contentType = init.headers.get("Content-Type") || "";
                } else if (typeof init.headers === "object") {
                    contentType = init.headers["Content-Type"] || init.headers["content-type"] || "";
                }
            }
            if (contentType.includes("application/x-www-form-urlencoded") && init.body) {
                // 替换 group_id 参数
                init.body = init.body.replace(/group_id=13062/g, "group_id=5496243");
            }
        }

        return originalFetch(input, init);
    };

    /********** 重写 XMLHttpRequest **********/
    const originalXHROpen = XMLHttpRequest.prototype.open;
    XMLHttpRequest.prototype.open = function (method, url, async, user, password) {
        if (!url.includes(EXCLUDE_URL)) {
            replacements.forEach(rule => {
                if (url.indexOf(rule.search.source.replace(/\\|\/|g/g, '')) !== -1) {
                    url = url.replace(rule.search, rule.replace);
                }
            });
        }
        // 保存 URL 和方法以便 send 时判断
        this._url = url;
        this._method = method ? method.toUpperCase() : "";
        return originalXHROpen.call(this, method, url, async, user, password);
    };

    // 重写 send，用于 POST 请求的 body 修改
    const originalXHRSend = XMLHttpRequest.prototype.send;
    XMLHttpRequest.prototype.send = function (body) {
        if (this._url === TARGET_POST_URL && this._method === "POST" && body && typeof body === "string") {
            body = body.replace(/group_id=13062/g, "group_id=5496243");
        }
        return originalXHRSend.call(this, body);
    };
})();