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Redirect Reddit URLs

Redirect any Reddit domain that isn't "old" to old.reddit.com while keeping the rest of the URL. Remove string after the last / in old.reddit.com URLs. Integrate shouldExcludePath function.

  1. // ==UserScript==
  2. // @name         Redirect Reddit URLs
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.1
  5. // @description  Redirect any Reddit domain that isn't "old" to old.reddit.com while keeping the rest of the URL. Remove string after the last / in old.reddit.com URLs. Integrate shouldExcludePath function.
  6. // @author       You
  7. // @match        *://*.reddit.com/*
  8. // @grant        none
  9. // ==/UserScript==
  10.  
  11. (function() {
  12.     'use strict';
  13.  
  14.     function removeDotsFromPath() {
  15.         const host = window.location.host;
  16.         const path = window.location.pathname;
  17.         if (host === "old.reddit.com") {
  18.             if (path.includes("/domain/")) {
  19.                 const newPath = path.replace(/\.[a-z]+$/, '');
  20.                 const newUrl = `https://${host}${newPath}${window.location.search}${window.location.hash}`;
  21.                 if (newUrl !== window.location.href) {
  22.                     window.location.replace(newUrl);
  23.                 }
  24.             } else if (path.includes(".")) {
  25.                 const newPath = path.replace(/\.[a-z]+$/, '');
  26.                 const newUrl = `https://${host}${newPath}${window.location.search}${window.location.hash}`;
  27.                 if (newUrl !== window.location.href) {
  28.                     window.location.replace(newUrl);
  29.                 }
  30.             }
  31.         }
  32.     }
  33.  
  34.     function shouldExcludePath(path) {
  35.         // Define paths to exclude
  36.         const excludePaths = ['/poll/', '/gallery/', '/media'];
  37.  
  38.         // Check if the path contains any excluded substring and is not preceded by "/r"
  39.         return excludePaths.some(exclude => path.includes(exclude) && !path.includes('/r' + exclude));
  40.     }
  41.  
  42.     function redirectNonOldDomains() {
  43.         const host = window.location.host;
  44.         const path = window.location.pathname;
  45.         const nonOldDomainRegex = /^(?!old\.)/;
  46.         if (nonOldDomainRegex.test(host) && !shouldExcludePath(path)) {
  47.             window.location.href = 'https://old.reddit.com' + window.location.pathname + window.location.search + window.location.hash;
  48.         }
  49.     }
  50.  
  51.     function redirectToOldRedditIfNotOnOldOrRedditOrTwoLetterDomain() {
  52.         const host = window.location.host;
  53.         const path = window.location.pathname;
  54.  
  55.         if (
  56.             host === "www.reddit.com" &&
  57.             !shouldExcludePath(path)
  58.         ) {
  59.             redirectToOldReddit();
  60.         } else if (host === "old.reddit.com" && shouldExcludePath(path)) {
  61.             const newUrl = `https://www.reddit.com${path}${window.location.search}${window.location.hash}`;
  62.             window.location.replace(newUrl);
  63.         }
  64.     }
  65.  
  66.     function redirectToOldReddit() {
  67.         window.location.href = 'https://old.reddit.com' + window.location.pathname + window.location.search + window.location.hash;
  68.     }
  69.  
  70.     // Call the functions
  71.     removeDotsFromPath();
  72.     redirectNonOldDomains();
  73.     redirectToOldRedditIfNotOnOldOrRedditOrTwoLetterDomain();
  74. })();