// ==UserScript==
// @name         Twitter Image :orig Promoter
// @version      0.6
// @description  Automatically promotes twitter image links to :orig, such as from :large.
// @author       Cro
// @match        https://pbs.twimg.com/media/*
// @grant        none
// @namespace    https://greasyfork.org/users/10865
// @icon         https://www.google.com/s2/favicons?domain=twitter.com
// @license      MIT
// ==/UserScript==
(function () {
"use strict";
var queryVars = function(str) {
return str.replace(/^\?/, '').split('&').map(x => x.split('=')).reduce((a, [k, v]) => { a[k] = v; return a; }, {});
};
// Check if this page contains a single image whose source is also the location.
var image = document.getElementsByTagName('img')[0];
if (image && image.getAttribute('src') == location.href) {
var pathname = location.pathname;
// Check if we already have the orig modifier
if (!pathname.match(/:orig$/)) {
// Trim modifiers.
var idx = pathname.lastIndexOf(':');
if (idx >= 0)
{
pathname = pathname.substr(0, idx);
}
// Check if we need to append the file type.
var format = queryVars(location.search).format;
if (format && !location.pathname.endsWith(format))
{
pathname += '.' + format;
}
// Add the modifier.
pathname += ':orig';
window.location = pathname;
}
}
})();