function log()
{
    console.log(arguments);
    $("#log").append(JSON.stringify(arguments)+"<hr>");
}

// Authorization on comets server
function auth()
{
    var user_id = 0;
    
    try{
        user_id = localStorage['user_id']
    }catch(e){ 
        user_id = Math.floor(Math.random()*1000000)
    } 
     
    if(!user_id)
    {
        user_id = Math.floor(Math.random()*1000000)
        localStorage['user_id'] = user_id
    }

    $("#userId").text("USER_ID = "+user_id);
    log("Request authorization for user_id="+user_id)
    var user_key = "PassForUser"+user_id

    //  The first step – it is sending user’s ID and a random hash in your system to the comet-server via CometQL.
    //  auth.php ( https://github.com/CppComet/auth-example/blob/master/auth.php )
    return $.when($.ajax({
        url: "https://comet-server.com/doc/CometQL/auth-chat/auth.php?user_id="+user_id+"&user_key="+user_key+"&t="+Math.floor(Math.random()*1000000),
        type: "GET",
        dataType:'json',
    })).always(function(res){
        $(".status").html("We are waiting for connection to the comet server");
        
        // The function start accepts connection settings and opens new connection. 
        // https://comet-server.com/wiki/doku.php/en:comet:javascript_api#connection_with_server
        cometApi.start({
            node: "app.comet-server.ru",
            dev_id: 15,
            user_id:user_id,
            user_key:user_key,
        })
    }).promise();
}

/**
 * 
 * @param {integer} user_id  
 * @param {string} text 
 */
function send(user_id, text)
{
    // Send message
    // send.php ( https://github.com/CppComet/auth-example/blob/master/send.php )
    $.ajax({
        url: "https://comet-server.com/doc/CometQL/auth-chat/send.php?user_id="+user_id+"&msg="+text+"&t="+Math.floor(Math.random()*1000000),
        type: "GET", 
    })
}

cometApi.onAuthSuccess(function()
{
    // We will initialize the call after successful authorization on the comet server.
    $(".StartCallBtn").removeClass("hide");
    log("Authorization on the comet server is complete")
    $(".status").html("Authorization on the comet server is complete");
    cometApi.getTrackPipeUsers("track_authExample", function(){
        log(e)
    })
})

cometApi.subscription("msg.message", function(e){ 
    log(e)
})

cometApi.subscription("track_authExample.subscription", function(msg)
{
    log(msg) 
});	

cometApi.subscription("track_authExample.unsubscription", function(msg)
{
    log(msg) 
});	

auth();