YouTube Subscription Redirect

YouTubeSubscriptionRedirect.user.js

// ==UserScript==
// @name         YouTube Subscription Redirect
// @description  Automatically load the videos you actually care about
// @namespace    B492B7DC-4C33-4E72-8316-49A425788F86
// @version      3.1
// @match        *://www.youtube.com/*
// @match        *://m.youtube.com/*
// @match        *://youtu.be/*
// @run-at       document-end
// @grant        none
// @license      MIT
// ==/UserScript==
// Adapted from: https://openuserjs.org/meta/rctdude2/YouTube_Subscription_Redirect.meta.js

(function() {
    "use strict";
    
    const CHANNEL_PATTERNS = {
        pathname: /^\/(?:artist|channel|show|user|c)\/[A-Za-z0-9_-]+\/?$/,
        atHandle: /^\/(?:@[^\/]+)\/?$/,
        youtuBe: /^\/[A-Za-z0-9_-]+$/
    };
    
    // Parameters that should be removed
    const CLEAR_PARAMS = new Set([
        'annotation_id',
        'app',
        'feature',
        'noredirect',
        'reload',
        'tab',
        'si',  // Session ID
        't',   // Timestamp
        'v'    // Video ID when in description
    ]);
    
    function cleanURL(url) {
        const params = new URLSearchParams(url.search);
        let paramsChanged = false;
        
        // Remove known problematic parameters
        for (const param of CLEAR_PARAMS) {
            if (params.has(param)) {
                params.delete(param);
                paramsChanged = true;
            }
        }
        
        // Only update URL if parameters were actually removed
        if (paramsChanged) {
            const cleanSearch = params.toString();
            const newPath = url.pathname + (cleanSearch ? `?${cleanSearch}` : '') + url.hash;
            history.replaceState(null, '', newPath);
        }
        
        return url;
    }
    
    function handleYouTuBeRedirect() {
        if (CHANNEL_PATTERNS.youtuBe.test(location.pathname)) {
            const videoId = location.pathname.slice(1);
            location.replace(`https://www.youtube.com/watch?v=${videoId}`);
            return true;
        }
        return false;
    }
    
    function processRedirects(url) {
        // Handle various redirect cases
        if (url.pathname === '/') {
            location.replace('/feed/subscriptions');
        } else if (CHANNEL_PATTERNS.pathname.test(url.pathname) ||
                  CHANNEL_PATTERNS.atHandle.test(url.pathname)) {
            // Only append /videos if it's not already there
            if (!url.pathname.endsWith('/videos')) {
                location.replace(url.pathname + '/videos' + url.search + url.hash);
            }
        }
    }
    
    function main() {
        // Handle youtu.be links first
        if (location.hostname === 'youtu.be') {
            if (handleYouTuBeRedirect()) return;
        }
        
        // Clean URL without triggering reloads
        const url = cleanURL(new URL(location.href));
        
        // Process redirects
        processRedirects(url);
    }
    
    // Listen for YouTube's SPA navigation events
    window.addEventListener('yt-navigate-start', main);
    
    // Initial run
    main();
})();