Bare version of »new« BCPlus (actually just a now playing function for BisaChat)

BCPlus.user.js

// ==UserScript==
// @name         BisaChat Plus
// @namespace    http://projects.0xleon.com/userscripts/bcplus
// @version      4.0.0.dev1
// @description  Make BisaChat Great Again
// @author       Stefan Hahn
// @match        https://bisachat.bisafans.de/index.php?room/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function($) {
	'use strict';

	let lastfmConnectNowPlayingHandler = function() {
		let lastfmUsername = window.localStorage.getItem('bcplus.alpha.nowPlaying.lastfmUsername');

		if (!lastfmUsername) {
			console.log('Last.fm Connect: Last.fm Nutzername nicht konfiguriert');
			return false;
		}

		$.ajax({
			url: 'https://ws.audioscrobbler.com/2.0/',
			dataType: 'jsonp',
			data: {
				api_key: window.atob('NDk0Mjk2MzMxNzJlNzRkZWU2OGM3YTNlN2E2Zjc5N2U='),
				format: 'json',
				method: 'user.getRecentTracks',
				user: lastfmUsername,
				limit: 1
			},
			success: function(data, textStatus, jqXHR) {
				if (data && data.recenttracks && data.recenttracks.track) {
					if (data.recenttracks.track[0] && data.recenttracks.track[0]['@attr'] && data.recenttracks.track[0]['@attr'].nowplaying && ('true' === data.recenttracks.track[0]['@attr'].nowplaying)) {
						let npData = [
							data.recenttracks.track[0].artist['#text'],	// artist
							data.recenttracks.track[0].name,		// title
							data.recenttracks.track[0].album['#text']	// album
						];

						let message = 'hört gerade: %artist% - %title%'.replace(/(%artist%)|(%tit(?:le|el)%)|(%album%)/gi, function(m, a, b, c) {
							return npData[0 * +(a !== undefined) + 1 * +(b !== undefined) + 2 * +(c !== undefined)]
						});
						let roomInfoMatch = /room\/(\d+)-.*?\//.exec(window.location.search)

						if (roomInfoMatch === null || roomInfoMatch.length < 2) {
							console.log('Last.fm Connect: Fehler beim Auslesen der roomID')
							return
						}

						$.ajax({
							url: 'index.php?ajax-proxy/&t=' + SECURITY_TOKEN,
							dataType: 'json',
							method: 'post',
							data: {
								'className': 'chat\\data\\message\\MessageAction',
								'actionName': 'push',
								'parameters[commandID]': 7,
								'parameters[roomID]': parseInt(roomInfoMatch[1], 10),
								'parameters[parameters]': JSON.stringify({
									text: message
								})
							}
						})
					}
					else {
						console.log('Last.fm Connect: Aktuell wird nichts gescrobbelt');
					}
				}
				else if (data && data.error) {
					console.log('Last.fm Connect: Fehler - ' + data.error.toString() + ' - ' + data.message);
				}
				else {
					console.log('Last.fm Connect: Ungültige Daten emfpangen');
				}
			},
			error: function(jqXHR, textStatus, errorThrown) {
				console.log('Last.fm Connect: Fehler - ' + textStatus + ' - ' + errorThrown);
				console.log(errorThrown);
			}
		});
	};

	let li = document.createElement('li');
	let a = document.createElement('a');
	let spanIcon = document.createElement('span');
	let spanText = document.createElement('span');

	a.setAttribute('class', 'button');
	a.setAttribute('href', '#');
	a.setAttribute('id', 'bcplus-now-playing');
	spanIcon.setAttribute('class', 'icon icon16 fa-lastfm-square');

	li.appendChild(a);
	a.appendChild(spanIcon);
	a.appendChild(document.createTextNode(' '));
	a.appendChild(spanText);
	spanText.appendChild(document.createTextNode('Now Playing'));
	document.querySelector('#chatQuickSettingsNavigation .buttonGroup').appendChild(li);

	document.addEventListener('keyup', function(event) {
		if (event.key === 'y' && event.ctrlKey) {
			event.preventDefault();
			event.stopPropagation();

			document.querySelector('#chatInputContainer textarea').focus();

			lastfmConnectNowPlayingHandler();
		}
	}, true);

	a.addEventListener('click', function(event) {
		event.preventDefault();
		event.stopPropagation();

		document.querySelector('#chatInputContainer textarea').focus();

		if (event.ctrlKey) {
			let lastfmUsername = window.prompt('Gib deinen Last.fm Nutzernamen ein!');

			if (!!lastfmUsername) {
				window.localStorage.setItem('bcplus.alpha.nowPlaying.lastfmUsername', lastfmUsername);
			}
		}
		else {
			lastfmConnectNowPlayingHandler();
		}

		return false;
	}, false);

})(window.jQuery);