Find Imgur links and embed them directly into a post.
// ==UserScript==
// @name Auto-embed Imgur links.
// @author Joshh
// @namespace https://tljoshh.com
// @version 0.1.1
// @description Find Imgur links and embed them directly into a post.
// @match *://*.websight.blue/thread/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=websight.blue
// @license MIT
// ==/UserScript==
(function() {
'use strict';
main();
function main() {
const postsContainer = document.querySelector('#messages');
const posts = document.querySelectorAll('.post');
// Look for imgur links
for (const post of posts) {
handlePost(post);
};
// Listen for imgur links in new posts added by livelinks
startMutationObserver(postsContainer);
}
// Add event listener to any posts added to DOM via livelinks
function startMutationObserver(targetNode) {
// Options for the observer (which mutations to observe)
const config = { childList: true };
// Callback function to execute when mutations are observed
const callback = (mutationList, observer) => {
// For all mutations made to the target node, check if any nodes were added...
for (const mutation of mutationList) {
handleMutation(mutation);
}
};
// Create an observer instance linked to the callback function
const observer = new MutationObserver(callback);
// Start observing the target node for configured mutations
observer.observe(targetNode, config);
}
// Handle any changes made to the messages container.
function handleMutation(mutation) {
// For all nodes that were added, check if any where posts made by a user and add a click event listener.
if(mutation.addedNodes.length) {
for (const addedNode of mutation.addedNodes) {
if (!addedNode.tagName) continue; // Not an element
if(addedNode.classList.contains('post')) {
handlePost(addedNode);
}
}
}
}
function handlePost(post) {
const imgurLinks = post.querySelectorAll('.message-contents a[href*="imgur.com"]');
const regex = new RegExp('https:\/\/(i\.)?imgur\.com\/([a-zA-Z0-9]{7})\.([a-zA-Z]+)');
const links = [...imgurLinks].filter(link => link.href.match(regex) !== null);
for (const link of links) {
const matches = link.href.match(regex);
const id = matches[2];
const fileType = matches[3]
link.style.display = "none";
const node = createEmbedNode(id, fileType);
link.parentNode.insertBefore(node, link.nextSibling);
}
}
function createEmbedNode(id) {
const container = document.createElement('div');
const script = createImgurScript();
const node = document.createElement('blockquote');
node.classList.add('imgur-embed-pub');
node.lang = 'en';
node.dataset.id = id;
node.dataset.context = false;
const innerNode = document.createElement('a');
innerNode.href = `https://imgur.com/${id}`;
node.appendChild(innerNode);
container.appendChild(node);
container.appendChild(script);
return container;
}
function createImgurScript() {
const script = document.createElement('script');
script.src = 'https://s.imgur.com/min/embed.js';
script.setAttribute('type', 'text/javascript');
script.setAttribute('async', '');
return script;
}
})();