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Reddit to Acorn Redirector

Redirects Reddit links to Acorn app

// ==UserScript==
// @name         Reddit to Acorn Redirector
// @namespace    http://greasyfork.org/
// @version      1.0
// @description  Redirects Reddit links to Acorn app
// @author       Unholy
// @match        *://*.reddit.com/*
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    const match = window.location.href.match(
        /^(?:https?:\/\/)?(?:(?:www|amp|m|i)\.)?(?:(?:reddit\.com))\/r\/(\w+)(?:\/comments\/(\w+)(?:\/\w+\/(\w+)(?:\/?.*?[?&]context=(\d+))?)?)?/i
    );

    if (match) {
        window.stop();

        const community = match[1];
        const postId = match[2];
        const commentId = match[3];
        const context = match[4];

        if (postId && commentId && context) {
            window.location.replace(
                `acorn:///posts/${postId}?commentId=${commentId}&context=${context}`
            );
            return;
        }

        if (postId && commentId) {
            window.location.replace(
                `acorn:///posts/${postId}?commentId=${commentId}`
            );
            return;
        }

        if (postId) {
            window.location.replace(`acorn://posts//${postId}`);
            return;
        }

        window.location.replace(`acorn:///communities/${community}`);
    }
})();