Ultimate Instance Redirect

Redirect social media to privacy frontends, remember mirror, switch instances with button and Ctrl+Shift+R hotkey. SponsorBlock removed. Sticky redirects enabled.

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Greasemonkey 油猴子Violentmonkey 暴力猴,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 篡改猴,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 篡改猴Violentmonkey 暴力猴,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 篡改猴Userscripts ,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 篡改猴,才能安装此脚本。

您需要先安装一款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         Ultimate Instance Redirect
// @namespace    violentmonkey.ultimate.redirect
// @version      2.6
// @description  Redirect social media to privacy frontends, remember mirror, switch instances with button and Ctrl+Shift+R hotkey. SponsorBlock removed. Sticky redirects enabled.
// @author       Amil John
// @match        *://*reddit.com/*
// @match        *://*.reddit.com/*
// @match        *://*twitter.com/*
// @match        *://*.twitter.com/*
// @match        *://*x.com/*
// @match        *://*.x.com/*
// @match        *://*/*
// @grant        none
// @license     CC-BY-NC-4.0
// @run-at       document-start
// ==/UserScript==


(function () {
    'use strict';

    const STORAGE_KEY_PREFIX = "preferredFrontend:";

    const serviceRedirects = [
        {
            name: "Reddit",
            match: /(?:^|\.)reddit\.com$/,
            storageKey: STORAGE_KEY_PREFIX + "reddit",
            frontends: [
                "https://redlib.catsarch.com",
                "https://redlib.perennialte.ch",
                "https://redlib.r4fo.com",
                "https://redlib.privacyredirect.com",
                "https://libreddit.diffraction.dev",
                "https://redlib.privadency.com",
                "https://redlib.scanash.xyz"
            ]
        },
        {
            name: "YouTube",
            match: /(?:^|\.)youtube\.com$/,
            storageKey: STORAGE_KEY_PREFIX + "youtube",
            frontends: [
                "https://yewtu.be",
                "https://inv.nadeko.net",
            ]
        },
        {
            name: "Twitter",
            match: /(?:^|\.)twitter\.com$|(?:^|\.)x\.com$/,
            storageKey: STORAGE_KEY_PREFIX + "twitter",
            frontends: [
                "https://nitter.net",
                "https://nitter.poast.org",
            ]
        }
    ];

    const currentHost = window.location.hostname;

    function getCurrentService() {
        return serviceRedirects.find(service => service.match.test(currentHost));
    }

    function getFrontendByHost(hostname) {
        return serviceRedirects.find(service =>
            service.frontends.some(url => new URL(url).hostname === hostname)
        );
    }

    function getStoredFrontend(service) {
        const url = localStorage.getItem(service.storageKey);
        return url && service.frontends.includes(url) ? new URL(url) : null;
    }

    function setStoredFrontend(service, frontendURL) {
        localStorage.setItem(service.storageKey, frontendURL.toString());
    }

    function getRandomFrontend(service, excludeHostname = null) {
        const filtered = excludeHostname
            ? service.frontends.filter(u => new URL(u).hostname !== excludeHostname)
            : [...service.frontends];
        return new URL(filtered[Math.floor(Math.random() * filtered.length)]);
    }

    function switchFrontend() {
        const service = getFrontendByHost(currentHost);
        if (!service) return;

        const newFrontend = getRandomFrontend(service, currentHost);
        setStoredFrontend(service, newFrontend.toString());
        const newUrl = newFrontend + window.location.pathname + window.location.search + window.location.hash;
        window.location.href = newUrl;
    }

    function createSwitcherButton() {
        const service = getFrontendByHost(currentHost);
        if (!service) return;

        const btn = document.createElement("button");
        btn.innerText = `🔄 Switch Instance (Ctrl + Shift + R)`;
        Object.assign(btn.style, {
            position: "fixed",
            bottom: "12px",
            right: "12px",
            zIndex: "99999",
            padding: "10px 14px",
            backgroundColor: "#222",
            color: "#fff",
            border: "none",
            borderRadius: "6px",
            cursor: "pointer",
            fontWeight: "bold",
            fontSize: "14px",
            boxShadow: "0 2px 8px rgba(0,0,0,0.3)"
        });
        btn.addEventListener("click", switchFrontend);

        const tryInsert = () => (document.body || document.documentElement).appendChild(btn);

        if (document.readyState === "loading") {
            document.addEventListener("DOMContentLoaded", tryInsert);
        } else {
            tryInsert();
        }
    }

    function addHotkey() {
        document.addEventListener("keydown", function (e) {
            const service = getFrontendByHost(currentHost);
            if (e.ctrlKey && e.shiftKey && e.code === "KeyR" && service) {
                e.preventDefault();
                switchFrontend();
            }
        });
    }

    function rewriteLinks() {
        document.querySelectorAll("a[href]").forEach(link => {
            try {
                const url = new URL(link.href);
                const service = serviceRedirects.find(svc => svc.match.test(url.hostname));
                if (service) {
                    const saved = getStoredFrontend(service);
                    if (saved) {
                        url.hostname = new URL(saved).hostname;
                        url.protocol = "https:";
                        link.href = url.toString();
                    }
                }
            } catch (_) {}
        });
    }

    function redirectIfOnService() {
        const service = getCurrentService();
        if (!service) return;

        const saved = getStoredFrontend(service);
        const redirectTarget = saved || getRandomFrontend(service);

        if (!saved) {
            setStoredFrontend(service, redirectTarget.toString());
        }

        const fullURL = redirectTarget + window.location.pathname + window.location.search + window.location.hash;
        window.location.replace(fullURL);
    }

    function initSponsorBlock() {
        const categories = ["sponsor", "selfpromo", "interaction", "intro", "outro", "preview", "music_offtopic", "exclusive_access"];
        const skipSegments = new Map();
        const muteSegments = new Map();

        const params = new URLSearchParams(window.location.search);
        const videoID = params.get("v");
        if (!videoID) return;

        function tryInject() {
            const video = document.querySelector("video");
            if (!video) return;

            fetch(`https://sponsor.ajay.app/api/skipSegments?videoID=${videoID}&categories=${JSON.stringify(categories)}`)
                .then(res => res.json())
                .then(data => {
                    data.forEach(item => {
                        const [start, end] = item.segment;
                        if (item.actionType === "skip") skipSegments.set(start, end);
                        else if (item.actionType === "mute") muteSegments.set(start, end);
                    });

                    video.addEventListener("timeupdate", () => {
                        const t = video.currentTime;
                        for (const [start, end] of skipSegments) {
                            if (t >= start && t < end) {
                                video.currentTime = end;
                                skipSegments.delete(start);
                            }
                        }
                        for (const [start, end] of muteSegments) {
                            video.muted = (t >= start && t < end);
                        }
                    });
                });
        }

        const observer = new MutationObserver(() => {
            if (document.querySelector("video")) {
                tryInject();
                observer.disconnect();
            }
        });

        observer.observe(document, { childList: true, subtree: true });

        let retryCount = 0;
        const fallback = setInterval(() => {
            if (++retryCount > 30) return clearInterval(fallback);
            if (document.querySelector("video")) {
                tryInject();
                clearInterval(fallback);
            }
        }, 500);
    }

    // === INIT ===
    const matchService = getCurrentService();
    if (matchService) {
        redirectIfOnService();
        return;
    }

    createSwitcherButton();
    addHotkey();
    rewriteLinks();
    new MutationObserver(rewriteLinks).observe(document, { childList: true, subtree: true });
    window.addEventListener("load", initSponsorBlock);
})();