index.js

#! /usr/bin/nodejs

var clargs = process.argv.slice(2);
for (let i=0; i<clargs.length; i++){
	if(clargs[i] == '--help'){
		console.log('agrs: /path/to/pkg:telepresence/ host port_telepresence port_websocket move_base_instance cmd_vel_topic port_stream image_topic rot_vel');
		return;
	}
}

var host               = clargs[1];
var port               = clargs[2];
var port_ws            = clargs[3];
var move_base_instance = clargs[4];
var cmd_vel_topic      = clargs[5];
var port_stream        = clargs[6];
var image_topic        = clargs[7];
var rot_vel            = clargs[8];
var websocket_address = "ws://" + host + ":" + port_ws;
var stream_url = "http://" + host +":"+ port_stream + "/stream?topic=" + image_topic;

const express = require('express');
const path = require('path');

const app = express();

app.use(express.json());
app.use(express.static(path.join(clargs[0], 'scripts')));

app.set('view engine', 'pug');
// app.set('views', path.join(__dirname, 'views'));
app.set('views', path.join(clargs[0], 'views'));


app.get('/',
	(req, res)=>{ res.render('telepresence'); });

app.get('/get_data', (req, res)=> {
	let data = websocket_address;
	data += "#";
	data += move_base_instance;
	data += "#";
	data += cmd_vel_topic;
	data += "#";
	data += stream_url;
	data += "#";
	data += rot_vel;
	res.send(data);
	});


app.listen(port, host, ()=>console.log("Server ready on "+host+":"+port+" (host:port)"));