Google-search-url-redirect

script.js

// @license      GPL-2.0-only
!function() {
    "use strict";

    let rules = [
        {
            matchRegex: RegExp(/^(?:.*?(?:\/RU=|&q=|&as=))?https?:\/\/((?!test)[a-z]+)\.?m?\.wikipedia\.org\/(?:[a-z]+|wiki)\/(?!Special:Search)(.*?)(?:$|\/RK=.*|&sa=.*)/),
            replaceWith: "https://www.wikiwand.com/$1/$2"
        },
        {
            matchRegex: RegExp(/^(?:.*?(?:\/RU=|&q=|&as=))?https?:\/\/(?:old|www)\.reddit\.com\/((?:r|u)\/.*?)(?:$|\/RK=.*|&sa=.*)/),
            replaceWith: "https://old.reddit.com/$1"
        }
    ];

    let searchEngine = {
        hosts: ["google.com"],
        resultContainerSelectors: ["div.GyAeWb#rcnt", "div.mJxzWe"]
    };

    const modifyUrls = (observer, resultContainer, options) => {
        try {
            rules.forEach(rule => {
                let linkSelector = rule.selector || "";
                let links = document.querySelectorAll(linkSelector);

                links.forEach(link => {
                    let url = decodeURIComponent(link.href);
                    if (rule.matchRegex.test(url)) {
                        let modifiedUrl = url.replace(rule.matchRegex, rule.replaceWith);
                        link.href = modifiedUrl;
                    }
                });
            });

            observer.observe(resultContainer, { childList: true, subtree: true });
        } catch (error) {
            console.error("URL Modification Error: ", error);
        }
    };

    try {
        let currentHost = window.location.host;
        if (searchEngine.hosts.some(host => currentHost.includes(host))) {
            let resultContainers = searchEngine.resultContainerSelectors || ["body"];
            resultContainers.forEach(selector => {
                let resultContainer = document.querySelector(selector);
                if (resultContainer) {
                    let observer = new MutationObserver(mutations => modifyUrls(observer, resultContainer, searchEngine));
                    observer.observe(resultContainer, { childList: true, subtree: true });
                    modifyUrls(observer, resultContainer, searchEngine);
                }
            });
        }
    } catch (error) {
        console.error("Error executing URL Modifier Script: ", error);
    }
}();