function validateAuth()
{
    $error = false;
    if(document.getElementById("fsync_auth_apikey").value == '')
    {
        document.getElementById("fsync_auth_apikey_error").style.display = "block";
        $error = true;
    }
    else
    {
        document.getElementById("fsync_auth_apikey_error").style.display = "none";
    }

    if(document.getElementById("fsync_auth_username").value == '')
    {
        document.getElementById("fsync_auth_username_error").style.display = "block";
        $error = true;
    }
    else
    {
        document.getElementById("fsync_auth_username_error").style.display = "none";
    }

    if(document.getElementById("fsync_auth_password").value == '')
    {
        document.getElementById("fsync_auth_password_error").style.display = "block";
        $error = true;
    }
    else
    {
        document.getElementById("fsync_auth_password_error").style.display = "none";
    }

    if(document.getElementById("fsync_auth_fiscalcode").value == '')
    {
        document.getElementById("fsync_auth_fiscalcode_error").style.display = "block";
        $error = true;
    }
    else
    {
        document.getElementById("fsync_auth_fiscalcode_error").style.display = "none";
    }

    if($error)
    {
        return false;
    }
    else
    {
        testAuth();
    }

}

function submitAuthForm()
{
    document.getElementById("authform_error").style.display = "none";
    validateAuth();
}

function ascii_to_hexa(str)
{
    var arr1 = [];
    for (var n = 0, l = str.length; n < l; n ++) 
        {
        var hex = Number(str.charCodeAt(n)).toString(16);
        arr1.push(hex);
        }
    return arr1.join('');
}

function testAuth()
{
    var params = '';
    params += '&fsync_auth_apikey=' + document.getElementById("fsync_auth_apikey").value;
    params += '&fsync_auth_username=' + document.getElementById("fsync_auth_username").value;
    params += '&fsync_auth_password=' + document.getElementById("fsync_auth_password").value;
    params += '&fsync_auth_fiscalcode=' + document.getElementById("fsync_auth_fiscalcode").value;
    params = encodeURI(params);

    var xhttp;
    xhttp = new XMLHttpRequest();
    xhttp.onreadystatechange = function() {
        if (this.readyState == 4 && this.status == 200) {
            if( this.responseText == '')
            {
                document.getElementById("fsync_auth_password").value = ascii_to_hexa(document.getElementById("fsync_auth_password").value);
		document.getElementById('save-auth-btn').classList.remove('btn-green');
    		document.getElementById('save-auth-btn').innerHTML = '<img src="View/img/loader.gif" />';
                document.getElementById('auth_form').submit();
            }
            else
            {
                document.getElementById("authform_error").style.display = "block";
                document.getElementById("authform_error").innerHTML = this.responseText;
            }
            
        }
    };

    xhttp.open("GET","ajax.php?random=" + Math.random() + "&action=testAuth" + params,true);
    xhttp.send();  
}