Twitter/X Nitter Redirect

Redirect twitter.com and x.com links to a random healthy Nitter instance.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Twitter/X Nitter Redirect
// @version      1.0
// @description  Redirect twitter.com and x.com links to a random healthy Nitter instance.
// @author       yodaluca23
// @license      GNU GPLv3
// @match        *://twitter.com/*
// @match        *://www.twitter.com/*
// @match        *://x.com/*
// @match        *://www.x.com/*
// @grant        GM_xmlhttpRequest
// @namespace http://tampermonkey.net/
// ==/UserScript==

(function() {
    'use strict';

    const staticURL = ''; // Set this to an instance if you always want to use a single Nitter instance instead of fetching from API.

    const apiUrl = 'https://status.d420.de/api/v1/instances';

    const profileURLPattern = /^https?:\/\/(www\.)?(twitter\.com|x\.com)\/[A-Za-z0-9_]+(\/.*)?$/;

    let currentURL = window.location.href;

    function fetchNitterInstance(callback) {
        GM_xmlhttpRequest({
            method: 'GET',
            url: apiUrl,
            onload: function(response) {
                try {
                    const data = JSON.parse(response.responseText);

                    if (!data.hosts || !Array.isArray(data.hosts)) {
                        console.error('Unexpected API response format:', data);
                        return;
                    }

                    const healthyInstances = data.hosts.filter(host => host.healthy && !host.is_bad_host);

                    if (healthyInstances.length > 0) {
                        const randomInstance = healthyInstances[Math.floor(Math.random() * healthyInstances.length)];
                        callback(randomInstance.domain);
                    } else {
                        console.warn('No healthy Nitter instances found.');
                    }
                } catch (error) {
                    console.error('Failed to parse Nitter instance data:', error, response.responseText);
                }
            },
            onerror: function(error) {
                console.error('Error fetching Nitter instances:', error);
            }
        });
    }

    function redirectToNitter(nitterDomain) {
        if (profileURLPattern.test(currentURL)) {
            let newURL = currentURL.replace(/(twitter\.com|x\.com)/, nitterDomain);
            console.log('Redirecting to:', newURL);
            if (newURL !== currentURL) {
                window.location.replace(newURL);
            }
        } else {
            console.log('URL does not match profile pattern, no redirection.');
        }
    }
    if (staticURL.length > 1) {
      redirectToNitter(staticURL);
    } else {
      fetchNitterInstance(redirectToNitter);
    }
})();