// https://stackoverflow.com/questions/22429744/how-to-setup-route-for-websocket-server-in-express/22429868

const express   = require('express');

let port = 8800;

const app = express();
app.use(express.static('.'));

const expressWs = require("express-ws")(app);

app.ws('*', (ws, req) => {
	let pos = req.url.indexOf('/', 1);
	let room = req.url.substring(1, pos);
	ws.room = room;
    console.log('WebSocket opened in room ' + room);
    ws.on('message', msg => {
		for (let wsc of expressWs.getWss().clients) {
			if (wsc.room == room){
				wsc.send(msg);
			}
		} 
    })

    ws.on('close', () => {
        console.log('WebSocket closed in room ' + room);
    })
})

console.log('Listening at port: ' + port);
app.listen(port);