server.js

const serverbase = require("./serverbase");

/*
  options for constructor:
    port: webserver port (default 80)
    url: <url for websocket server incl. port ('localhost:81')
    OBS! if url is omitted (default), websocket will be on same location and port as webserver
    dir: <base folder (relative to server folder) where webpages are located. default __dirname (server folder)
    doc: document to be used, if no document is givne in web-url. default is '/index.html'

    if the web url contains parameters, an event can be raised for each value.
    giving the url: http://server/index.html?name=erik the name will raise the following callback
    <serverbase obj>.onparm('name', func) will call the function 'func(page, value)' wher page is the name of the requested page, value is the value of the parameter
    data from web-socket client is in JSON format;

    data from websocket client is expected as a JSON msg. ex. "{'url': 'http://myserver.com'}"
    to register a callback for 'url' do this:
    <serverbase obj>.on('url', func) wher func is function func(data) {} (data is the value of 'url')
    
*/

var ww = new serverbase({ port: 82, dir: __dirname + '/web' });

var currentUrl;

function bcurl(data) {
    currentUrl = data;
    console.log("Now broadcasting url:", currentUrl);
    ww.broadcast(JSON.stringify({ 'url': currentUrl, 'info': "New url broadcasted" }));
}

ww.onparm('url', function (doc, data) {     //  action if url contains parameter 'url' returns document requested and value of parameter
    console.log("Value of parmeter 'url' in page '%s' is '%s'", doc, data);
})

ww.on('url', bcurl);    //  action if websocket receives 'url' parameter.

ww.on('connect', function (ws) {    //  action when a web-client is connected. the socket object is returned
    console.log("Now connected - sending %s", currentUrl);
    ws.send(JSON.stringify({ 'url': currentUrl, 'info': "Welcome to webradio" }));
})

ww.on('listen', function (webport) {   //  action when web-server start to listen.
    console.log('Listening on port %s', webport);
    bcurl("http://live-icy.gss.dr.dk:8000/A/A04H.mp3");
})