Rickroll Detect

Highlights rickrolls on the WaniKani forums

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Rickroll Detect
// @version      0.2
// @namespace    http://tampermonkey.net/
// @description  Highlights rickrolls on the WaniKani forums
// @author       BIsTheAnswer
// @include      https://community.wanikani.com/*
// @license      MIT; http://opensource.org/licenses/MIT
// @grant        none
// ==/UserScript==

(function() {
    /* global $ */
    /* eslint curly: off */

    'use strict';

    var rickroll_array = [
        'dQw4w9WgXcQ',
        'doEqUhFiQS4',
        'oHg5SJYRHA0'
    ];

    var rickroll_regex = /(https?:\/\/)?(www\.)?youtube\.[a-z]+\/watch\?v=([a-zA-Z0-9]+)([^a-zA-Z0-9].*)?/i;
    var rickroll_regex_short = /(https?:\/\/)?(www\.)?youtu\.be\/([a-zA-Z0-9]+)([^a-zA-Z0-9].*)?/i

    function mark_rickrolls() {
        $('a').filter(function() {
            var regex_result = this.href.match(rickroll_regex);
            if(regex_result == null) {
                regex_result = this.href.match(rickroll_regex_short);
                if(regex_result == null)
                    return false;
            }
            return rickroll_array.includes(regex_result[3]);
        }).css('background-color', 'rgb(255, 0, 0, 0.5)').css('border-bottom', '1px solid rgb(255,0,0,0.5)');
    }

    mark_rickrolls();

    var dom_watch = new MutationObserver(function() {
        mark_rickrolls();
    });
    dom_watch.observe(document.body, {childList: true, subtree: true});
})();