Base64 link decoder

Replaces any base64 encoded link in a <code> block as that is the normal format for links on the instance

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

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

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

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.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Base64 link decoder
// @namespace   Violentmonkey Scripts
// @match       *://lemmy.dbzer0.com/*
// @grant       none
// @version     1.0
// @license     MIT
// @author      sweepline
// @description Replaces any base64 encoded link in a <code> block as that is the normal format for links on the instance
// ==/UserScript==

function decodeURLS() {
    while (true) {
    // We must do FIRST_ORDERED_NODE_TYPE runs many times as the iterator dies in NODE_ITERATOR_TYPE if the dom changes.
    let xpath = document.evaluate("//code[contains(text(),'aHR0c')]", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
    if (xpath.singleNodeValue == null) {
      break;
    }
    const decoded = atob(xpath.singleNodeValue.innerText)
    xpath.singleNodeValue.innerHTML = `<a href="${decoded}">${decoded}</a>`;
  }
}

// First load replace
window.addEventListener('load', decodeURLS, {once: true, capture: false});

// For listening on navigation
const observeUrlChange = () => {
  let oldHref = document.location.href;
  const body = document.querySelector("body");
  const observer = new MutationObserver(mutations => {
    if (oldHref !== document.location.href) {
      oldHref = document.location.href;
      setTimeout(decodeURLS, 300);
    }
  });
  observer.observe(body, { childList: true, subtree: true });
};

window.onload = observeUrlChange;