Niconico song-name helper

Make craftwar's obs plugin (https://craftwarblog.blogspot.com/2018/01/obs-plugin-playing-song.html) able to get song name.

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==
// @author craftwar
// @name Niconico song-name helper
// @description Make craftwar's obs plugin (https://craftwarblog.blogspot.com/2018/01/obs-plugin-playing-song.html) able to get song name.
// @copyright 2020-2021, craftwar (https://craftwarblog.blogspot.com/)
// @license GPL-3.0-or-later; https://www.gnu.org/licenses/gpl-3.0.txt
// @homepageURL https://github.com/craftwar/userscript/tree/master/Niconico-song-name-helper
// @version 0.1.20210120
// @namespace github.com.craftwar
// @match https://www.nicovideo.jp/*
// @grant none
// @run-at document-end
// @inject-into content
// ==/UserScript==
// inject-into content for Violentmonkey, default mode page is not working
// ref: https://violentmonkey.github.io/2018/11/23/inject-into-context/

'use strict';
(() => {
	const suffixes = [" - ニコニコ動画", " - Niconico Video", " - niconico動畫"];
	const fake_suffix = " - YouTube";
	const fix_suffix = () => {
		if (!document.title.endsWith(fake_suffix)) {
			for (const suffix of suffixes) {
				if (document.title.endsWith(suffix)) {
					document.title = document.title.substring(0, document.title.length - suffix.length) + fake_suffix;
					break;
				}
			}
		}
	}

	const title_element = document.querySelector("title");
	const track_observer = new MutationObserver(fix_suffix);
	track_observer.observe(title_element, { childList: true });
	fix_suffix();
})();