canonical openload.co for UserScript

ol-canonical.user.js

// ==UserScript==
// @name        OL canonical
// @namespace   http://noromanba.flavors.me
// @description canonical openload.co for UserScript
// @include     *://openload.co/f/*
// @include     *://openload.co/embed/*
// @include     *://oload.tv/f/*
// @include     *://oload.tv/embed/*
// @grant       none
// @noframes
// @run-at      document-start
// @version     2017.2.1.0
// @homepage    https://gist.github.com/noromanba/999628af9a744e593beb3fe3e1d38413
// @downloadURL https://gist.github.com/noromanba/999628af9a744e593beb3fe3e1d38413/raw/ol-canonical.user.js
// @license     MIT License http://nrm.mit-license.org/2017
// @author      noromanba   http://noromanba.flavors.me
// @icon        https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Bird_template.svg/240px-Bird_template.svg.png
// ==/UserScript==

// Icon (PD by Art-top, Nesusvet and Urutseg)
// https://commons.wikimedia.org/wiki/File%3ABird_template.svg

// Devel
// https://gist.github.com/noromanba/999628af9a744e593beb3fe3e1d38413


// FIXME Tampermonkey favicon access
// ol.link blacklist of Google Safe Browsing
// and Tampermonkey everytime greedy favicon access,
// so unsafe alert on Dashboard everytime WTH
// @include     *://ol.link/f/*
// @include     *://ol.link/embed/*

// TODO
// - /embed/ handling
// - ol.link handling
//  - Chrome do not change location
//  - Firefox can use location
// - refactoring
// - set icon
(() => {
    'use strict';

    if (location.hostname === 'oload.tv' ||
        location.hostname === 'ol.link') {
        location.hostname = 'openload.co';
    }

    const title = (() => {
        return (document.querySelector('head meta[name="description"][content]') || {}).content ||
            (document.querySelector('head meta[name="og:title"][content]') || {}).content ||
            (document.querySelector('head meta[name="twitter:title"][content]') || {}).content ||
            document.title.slice(0, document.title.lastIndexOf(' | openload'));
    })();

    const canonURL = (() => {
        const url = (document.querySelector('meta[name="og:url"][content]') || {}).content;
        let canon = new URL(url);
        // ol std syntax
        // https://openload.co/f/<ID>/
        // https://openload.co/f/<ID>
        canon.pathname = canon.pathname.match(/\/f\/[\w\-]+/) + '/';
        return canon.href;
    })();

    history.pushState(null, null, canonURL + title.replace(/\s/g, '_'));
})();