Redirect Reddit links to LiveContainer so they open in the containerized Reddit app.
// ==UserScript==
// @name Reddit → LiveContainer (iOS)
// @namespace sharmanhall
// @version 0.5
// @description Redirect Reddit links to LiveContainer so they open in the containerized Reddit app.
// @author sharmanhall
// @match https://www.reddit.com/*
// @match https://old.reddit.com/*
// @match https://np.reddit.com/*
// @match https://reddit.com/*
// @match https://redd.it/*
// @match *://*/*
// @grant none
// @license MIT
// @run-at document-start
// @noframes
// ==/UserScript==
(function () {
'use strict';
// ---- prefs ----
const VERBOSE = true; // set false to quiet logs
const AUTO_REDIRECT_ON_REDDIT_PAGES = true; // when you're *on* a Reddit page
const REWRITE_LINKS_ON_ALL_PAGES = true; // intercept <a> to Reddit anywhere
const ADD_LC_FLAG = true; // append lc=1 to avoid bounce loops
const isIOS = /iPhone|iPad|iPod/i.test(navigator.userAgent);
// Cover reddit root + all subdomains; include redd.it shortener.
const redditHosts = new Set([
'reddit.com', // matches www/old/np/amp/etc via endsWith
'redd.it' // shortlinks (posts, comments, media pages)
]);
function log(...args){ if (VERBOSE) console.log('[LC-Reddit]', ...args); }
function isRedditURL(u) {
try {
const url = (u instanceof URL) ? u : new URL(u, location.href);
return [...redditHosts].some(h => url.hostname === h || url.hostname.endsWith('.' + h));
} catch { return false; }
}
// Encode for LiveContainer's open-web-page scheme (expects Base64)
function toBase64(str) {
try {
return btoa(String.fromCharCode(...new TextEncoder().encode(str)));
} catch {
// Fallback for older Safari
return btoa(unescape(encodeURIComponent(str)));
}
}
function buildLcUrl(originalUrl) {
const url = new URL(originalUrl, location.href);
if (ADD_LC_FLAG && !url.searchParams.has('lc')) url.searchParams.set('lc', '1');
return `livecontainer://open-web-page?url=${toBase64(url.toString())}`;
}
function redirectToLC(u) {
const lc = buildLcUrl(u);
log('Redirecting to LiveContainer:', lc);
location.replace(lc); // avoid extra history entries
}
// 1) If we're on a Reddit page already, bounce to LiveContainer (iOS only)
if (isIOS && AUTO_REDIRECT_ON_REDDIT_PAGES && isRedditURL(location.href)) {
const cur = new URL(location.href);
if (!cur.searchParams.get('lc')) {
redirectToLC(location.href);
return; // stop executing further on this page
} else {
log('lc=1 present; skipping auto-redirect to avoid loop.');
}
}
if (!isIOS) return; // iOS-only behavior below
// Some pages expose expanded URLs (e.g., via data-* attributes). Prefer those when they point to Reddit.
function resolveTargetHref(a) {
const expanded =
a?.dataset?.expandedUrl ||
a?.getAttribute?.('data-expanded-url') ||
a?.dataset?.fullUrl ||
a?.getAttribute?.('data-full-url');
if (expanded && isRedditURL(expanded)) return expanded;
return a?.href || '';
}
// 2) Global capture fallback for delegated clicks (robust vs dynamic UIs)
if (REWRITE_LINKS_ON_ALL_PAGES) {
document.addEventListener('click', (e) => {
const a = e.target?.closest?.('a[href]');
if (!a) return;
const targetHref = resolveTargetHref(a);
if (!isRedditURL(targetHref)) return;
try {
e.preventDefault();
e.stopPropagation();
redirectToLC(targetHref);
} catch (err) {
log('Error redirecting (global):', err);
}
}, { capture: true, passive: false });
}
// 3) Per-anchor hook + dynamic observer (in case sites block global handlers)
if (REWRITE_LINKS_ON_ALL_PAGES) {
const processAnchor = (a) => {
if (!a || !a.href) return;
if (a.dataset.lcReddit === '1') return; // double-hook guard
const targetHref = resolveTargetHref(a);
if (!isRedditURL(targetHref)) return;
const handler = (e) => {
try {
e.preventDefault();
e.stopPropagation();
redirectToLC(targetHref);
} catch (err) {
log('Error redirecting (anchor):', err);
}
};
a.addEventListener('click', handler, { capture: true, passive: false });
a.dataset.lcReddit = '1';
log('Hooked Reddit link:', targetHref);
};
// Initial pass
document.querySelectorAll('a[href]:not([data-lc-reddit])').forEach(processAnchor);
// Observe dynamically-added links (SPAs, infinite scroll, etc.)
const mo = new MutationObserver((muts) => {
for (const m of muts) {
for (const node of m.addedNodes) {
if (node.nodeType !== 1) continue;
if (node.tagName === 'A' && node.href) processAnchor(node);
else node.querySelectorAll?.('a[href]:not([data-lc-reddit])').forEach(processAnchor);
}
}
});
mo.observe(document.documentElement, { childList: true, subtree: true });
}
})();