// ==UserScript==
// @name         Farside redirect
// @version      1.0
// @description  Redirects twitter, reddit, youtube, medium, instagram to a proven-working open-source third-party frontend counterpart. Use the menu to enable/disable for specific sites
// @match        http://*/*
// @include      *
// @license      MIT
// @grant        GM.xmlHttpRequest
// @grant        GM.getValue
// @grant        GM.setValue
// @grant        unsafeWindow
// @grant        GM_getResourceURL
// @grant        GM_getResourceText
// @grant        GM.registerMenuCommand
// @run-at       document-start
// @namespace https://greasyfork.org/users/288098
// ==/UserScript==
(function() {
'use strict';
let preferences = {}
preferences.sites = {
all: true,
twitter: true,
reddit: true,
youtube: true,
medium: true,
instagram: true,
}
preferences.init = async function (){
const defaultPreferences = preferences.sites;
let loadedPreferences = await preferences.load();
if (Object.keys(preferences.sites).length != Object.keys(defaultPreferences).length){
preferences.sites = defaultPreferences;
await preferences.save(preferences.sites);
}
if (!loadedPreferences){
await preferences.save(preferences.sites);
}
}
preferences.save = async function (){
let newPreferences = JSON.stringify(preferences.sites);
let saved = await GM.setValue("farsidePreferences", newPreferences);
return saved;
}
preferences.load = async function (){
let fetchedPreferences = await GM.getValue("farsidePreferences");
if (!fetchedPreferences){return false}
preferences.sites = JSON.parse(fetchedPreferences);
return preferences.sites;
}
preferences.toggle = function (site){
preferences.sites[site] = !preferences.sites[site];
}
async function registerMenuItems(){
for (let site in preferences.sites) {
// console.log(`${site}: ${preferences.sites[site]}`);
GM.registerMenuCommand(`${site}: ${preferences.sites[site] ? "enabled" : "disabled"}`, async () => {
preferences.toggle(site);
await preferences.save();
unsafeWindow.location.reload();
});
}
}
function replaceUrl(url, regex, newDomain) {
return url.replace(regex, `$1://${newDomain}/$3`);
}
function getDomain(url) {
if (url) {
return url.replace(/https?:\/\/([^\/]*).*/, "$1");
} else {
return null;
}
}
function redirect(originalUrl) {
let farsideInstances = {
nitter: "farside.link/nitter",
teddit: "farside.link/teddit",
invidious: "farside.link/invidious",
scribe: "farside.link/scribe",
bibliogram: "farside.link/bibliogram",
};
const originalDomain = getDomain(originalUrl);
const twitterRegex = preferences.sites.twitter ? /(https?):\/\/(twitter.com)\/(.*)/ : /tHisShoUldNeverMatch/;
const redditRegex = preferences.sites.reddit ? /(https?):\/\/(reddit.com|www.reddit.com|old.reddit.com|np.reddit.com|new.reddit.com|amp.reddit.com)\/(.*)/ : /tHisShoUldNeverMatch/;
const youtubeRegex = preferences.sites.youtube ? /(https?):\/\/(youtube.com|m.youtube.com|www.youtube.com|youtu.be)\/(.*)/ : /tHisShoUldNeverMatch/;
const mediumRegex = preferences.sites.medium ? /https?:\/\/(?:.*\.)*(?<!link\.)medium\.com(\/.*)?$/ : /tHisShoUldNeverMatch/;
const instagramPostRegex = preferences.sites.instagram ? /https?:\/\/(www\.)?(instagram.com|instagr.am)\/.*(p|tv)\/.*/ : /tHisShoUldNeverMatch/;
const instagramRegex = preferences.sites.instagram ? /https?:\/\/(www\.)?(instagram.com|instagr.am)\/.*/ : /tHisShoUldNeverMatch/;
try {
// Twitter
if (twitterRegex.test(originalUrl)) {
const newUrl = replaceUrl(
originalUrl,
twitterRegex,
farsideInstances.nitter
);
return {
redirectUrl: newUrl
};
}
// Reddit
if (redditRegex.test(originalUrl)) {
const newUrl = replaceUrl(
originalUrl,
redditRegex,
farsideInstances.teddit
);
return {
redirectUrl: newUrl
};
}
// YouTube
if (youtubeRegex.test(originalUrl)) {
const newUrl = replaceUrl(
originalUrl,
youtubeRegex,
farsideInstances.invidious
);
return {
redirectUrl: newUrl
};
}
// Medium
if (mediumRegex.test(originalUrl)) {
const newUrl = originalUrl.replace(
mediumRegex,
`https://${farsideInstances.scribe}$1`
);
return {
redirectUrl: newUrl
};
}
// Instagram
if (instagramPostRegex.test(originalUrl)) {
const newUrl = originalUrl.replace(
/https?:\/\/((www\.)?(instagram.com|instagr.am)(\/accounts\/login\/\?next=)?)/,
`https://${farsideInstances.bibliogram}`
);
return {
redirectUrl: newUrl
};
}
if (instagramRegex.test(originalUrl)) {
const newUrl = originalUrl.replace(
/https?:\/\/((www\.)?(instagram.com|instagr.am))/,
`https://${farsideInstances.bibliogram}/u`
);
return {
redirectUrl: newUrl
};
}
else {return false}
}
catch(e){
console.log(e);
}
}
async function start(){
await preferences.init();
registerMenuItems();
if (preferences.sites.all === false){return}
const currentUrl = unsafeWindow.location.href;
const redirectLocation = redirect(currentUrl);
if (redirectLocation){
unsafeWindow.location = redirectLocation.redirectUrl;
}
}
start();
// This script was modified from the original extension at https://addons.mozilla.org/en-US/firefox/addon/farside/
// Reason for porting: I want to be able to disable it for specific sites at will.
/*
browser.webRequest.onBeforeRequest.addListener(
redirect,
{
urls: [
...twitterUrls,
...redditUrls,
...youtubeUrls,
...mediumUrls,
...instagramUrls,
],
},
["blocking"]
);
*/
})();