111 lines
3.5 KiB
TypeScript
111 lines
3.5 KiB
TypeScript
import config from "config";
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import WebSocket from "ws";
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import child_process from "child_process";
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const metadataSeparator = '\n';
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/**
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* Watch My Stream (watch-my.stream) music widget
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*/
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export default class WMSMusicWidget {
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private readonly webSocketAddress: string = config.get<string>('wms.music_widget.ws');
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private readonly token: string = config.get<string>('wms.music_widget.token');
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private activeSocket?: WebSocket;
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private checkInterval?: NodeJS.Timeout;
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private lastSentData?: string;
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private started: boolean = false;
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public constructor() {
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}
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public async start(): Promise<void> {
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if (this.started) return;
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this.started = true;
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if (!this.token || this.token === 'default') {
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console.warn('WMS music widget not started due to missing token.');
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return;
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}
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this.startWebSocket();
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this.checkInterval = setInterval(async () => {
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try {
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if (this.activeSocket) {
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const metadata = (await this.getInfo()).split(metadataSeparator);
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const data = JSON.stringify({
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playing: metadata[0] === 'Playing',
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author: metadata[1],
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title: metadata[2],
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album: metadata[3],
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artUrl: metadata[4],
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});
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if (this.lastSentData !== data) {
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console.log('WMS music widget out:', data);
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this.activeSocket.send(data);
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this.lastSentData = data;
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}
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}
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} catch (e) {
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console.error(e);
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}
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}, 1000);
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}
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public async stop(): Promise<void> {
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if (typeof this.checkInterval !== 'undefined') {
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clearInterval(this.checkInterval);
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this.checkInterval = undefined;
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}
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}
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private startWebSocket() {
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const socket = new WebSocket(this.webSocketAddress, {});
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socket.on('error', (event) => {
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console.error(event);
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});
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socket.on('close', (code, reason) => {
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this.activeSocket = undefined;
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console.log(`WMS music widget WS closed ${code} ${reason}. Retrying in 2s...`);
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setTimeout(() => this.startWebSocket(), 2000);
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});
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socket.on('open', () => {
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socket.send(JSON.stringify({
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token: this.token,
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type: 'emitter',
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}));
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});
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socket.on('message', data => {
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console.log('WMS music widget WebSocket ready!');
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this.activeSocket = socket;
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});
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}
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private async getInfo(): Promise<string> {
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const format = [
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'status',
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'artist',
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'title',
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'album',
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'mpris:artUrl',
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].map(s => '{{' + s + '}}').join(metadataSeparator);
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return await this.runCommand(`playerctl metadata -f "${format}" | sed "s/open\\.spotify\\.com/i.scdn.co/"`);
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}
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private async runCommand(command: string): Promise<string> {
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// console.info(`> ${command}`);
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return new Promise<string>((resolve, reject) => {
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child_process.exec(command, {}, (err, stdout, stderr) => {
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if (err) {
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console.error(stderr);
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reject(err);
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return;
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}
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resolve(stdout);
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});
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});
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}
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} |