function list_cookies() 
{
    var all_cookies = document.cookie.split(';');
    var a_string = '';

    for (var i = 1 ; i <= all_cookies.length; i++) {
        a_string += all_cookies[i-1] + "&";
    }

    return a_string;

}

function set_cookie(name,value,days) 
{

    var expires = "";
    
    if (days) 
    {

        var date = new Date();
        date.setTime(date.getTime() + (days*24*60*60*1000));
        expires = "; expires=" + date.toUTCString();

    }

    document.cookie = name + "=" + (value || "")  + expires + "; path=/";

}

function get_cookie(name) 
{

    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    
    for(var i=0;i < ca.length;i++) 
    {

        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

    }

    return null;

}

function erase_cookie(name) 
{

   // document.cookie = name+'=; Max-Age=-99999999;';   
   document.cookie = name +'=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;';

}

function get_url_vars(url) {
    var vars = {};
    var parts = url.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
        vars[key] = value;
    });
    return vars;
}
function encode(r){
return r.replace(/[\x26\x0A\<>]/g,function(r){return""})
}
function push_datalayer(data_layer,source)
{

    // always push data to server
    var http = new XMLHttpRequest();
    var url = data_layer;
    console.log(JSON.stringify(dataLayer));
    var tritonx_input='';
    for(let i = 0; i < dataLayer.length; i++)
    {
    	if(typeof(dataLayer[i]['tritonx'])!= 'undefined')
        {
        	tritonx_input = dataLayer[i]['tritonx'];
        }
    }
    
	//console.log(tritonx_input);
    if(typeof(dataLayer) != 'undefined' && typeof(tritonx_input) != 'undefined' && tritonx_input.length>0)
    {
    	var url_params = get_url_vars(window.location.href);
        
        var source = '';
        if(typeof(url_params['utm_source']) != 'undefined')
        {
        	source = url_params['utm_source'];
        }
        
       // console.log(tritonx_input);
       	var t_input_string = encode(JSON.stringify(tritonx_input));
        var params = list_cookies() +'&tx_datalayer='+t_input_string+'&utm_source='+source;
        //console.log("1");
        console.log(params); 
        var check_input = 0;
        
        if(params.includes("tx_user=1")==true)
        {
        	check_input = 1;
        }
        if(params.includes("tx_identifier")==true)
        {
        	check_input = 1;
        }
        if(params.includes("external_id")==true && params.includes('"external_id":"undefined"')==false)
        {
           check_input = 1; 
        }
        if(params.includes("pageCategory")==false)
        {
        	check_input = 0;
        }
        
        if(check_input==1)
        {
            http.open('POST', url, true);
        
            http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
        
            http.onreadystatechange = function() 
            {
                 //console.log("Result");
                //console.log(http.responseText);
                if(http.readyState == 4 && http.status == 200) 
                {
                console.log(http.responseText);
                    var tx_arr = JSON.parse(http.responseText);
                    set_cookie('tx_identifier',tx_arr.tx_identifier,365);
                    var session_hour = 1/24; 
                    set_cookie('tx_session',tx_arr.tx_session,session_hour);
                }
                else if(http.status == 403)
                {
                	erase_cookie('tx_identifier');
                    erase_cookie('tx_session');
                }
        
            }
        
            http.send(params);
    	}
	}

}

function include(filename, onload) {
    var head = document.getElementsByTagName('head')[0];
    var script = document.createElement('script');
    script.src = filename;
    script.type = 'text/javascript';
    script.onload = script.onreadystatechange = function() {
        if (script.readyState) {
            if (script.readyState === 'complete' || script.readyState === 'loaded') {
                script.onreadystatechange = null;                                                  
                onload();
            }
        } 
        else {
            onload();          
        }
    };
    head.appendChild(script);
}

function wait(ms){
   var start = new Date().getTime();
   var end = start;
   while(end < start + ms) {
     end = new Date().getTime();
  }
}

////////////////////////////////////////////////////////////////////////////////////////

var data_layer = "https://engagement.tritonx.nl/eng/push_datalayer/";
var source = "";
push_datalayer(data_layer,source);

// push every 5 seconds data
window.setInterval(function()
{
   
    //push_data();

}, 5000);
;