function CalculateAge(birthdate) {
    var birthday = new Date(birthdate);
    var ageDifMs = Date.now() - birthday.getTime();
    var ageDate = new Date(ageDifMs);
    var age = Math.abs(ageDate.getUTCFullYear() - 1970);
    console.log("age: " + age);
    return age;
}
function calculateAgeLatest(birthday, dateToCalculate) {
    var calculateYear = dateToCalculate.getFullYear();
    var calculateMonth = dateToCalculate.getMonth();
    var calculateDay = dateToCalculate.getDate();

    var dateOfBirth = new Date(birthday);
    var birthYear = dateOfBirth.getFullYear();
    var birthMonth = dateOfBirth.getMonth();
    var birthDay = dateOfBirth.getDate();

    var age = calculateYear - birthYear;
    var ageMonth = calculateMonth - birthMonth;
    var ageDay = calculateDay - birthDay;

    if (ageMonth < 0 || (ageMonth == 0 && ageDay < 0)) {
        age = parseInt(age) - 1;
    }
    return age;
}

function CreateValidator(attribute, displayName) {
    var newValidator = document.createElement('span');
    var labelId = "#" + attribute + "_label";
    var label = attribute + "_label";
    newValidator.style.display = "none";
    newValidator.id = attribute;
    newValidator.controltovalidate = attribute;
    newValidator.errormessage = "<a href='" + labelId + "'>" + displayName + " is a required field.</a>";
    newValidator.validationGroup = "";
    newValidator.initialvalue = "";
    newValidator.evaluationfunction = function () {
        var value = $("#" + attribute).val();
        if (value == null || value == "") {
            return false;
        }
        else {
            return true;
        }
    };
    Page_Validators.push(newValidator);
    $("a[href='" + labelId + "']").on("click", function () {
        scrollToAndFocus(label, attribute);
    });
}

function removeValidator(fieldName) {
    $.each(Page_Validators, function (index, validator) {
        if (validator.id == fieldName) {
            Page_Validators.splice(index, 1);
        }
    });

    $("#" + fieldName + "_label").parent().removeClass("required");
}


var divActions = document.getElementsByClassName('actions');
var dataUsage = '' +
    '<div style="text-align:center;border:solid;border-width:2px;border-spacing:10px 5px 10px 10px;border-collapse:separate;">' +
    '  <br/>To find out more about how CITB use your data please ' + '<a href="https://www.citb.co.uk/utility-links/privacy-policy-cookies/" target="_blank">' +'click here</a>' +
    '  <br/>&nbsp;' +
    '</div>';

var notDisplayed = '' +
    '<div style="padding:20px;border:solid;border-width:2px;border-spacing:10px 5px 10px 10px;border-collapse:separate;">' +
    '  <br/>Your record is not currently being displayed on the Construction Training Register. <br/><br/>' +
    'Having your record displayed on the Construction Training Register provides several benefits: <br/>' +
    '- It allows you to easily demonstrate to an employer or contractor that you hold  required qualifications, achievements or training for a particular role <br/>' +
    '- It allows the training you have completed to more easily transfer between employers, leading to less time off- the - job repeating training you have already undertaken <br/>' +
    '- It can speed up the process of starting a new job, as employers can easily see the training you have completed  <br/>  <br/>' +
    'To display your record on the Construction Training Register please click ‘Display My Record” below' +
    '  <br/>&nbsp;' +
    '</div>';


var $closeAccount = $('<a href="/close-profile/" class="btn btn-primary" style="margin-right: 10px; float: right;">Close my profile</a>');
if ($('#citb_closeaccount_0').is(":checked")) //Account is not closed
{
    //$closeAccount.appendTo(divActions);
    $(".workflow-link.btn-default.btn").css('display', 'none');
    $('table[data-name="SUMMARY_TAB_section_6"]').after(dataUsage);
}

else {
    $("#UpdateButton").css('display', 'none');
    $('table[data-name="SUMMARY_TAB_section_6"]').after(notDisplayed);
}

$(".workflow-link.btn-default.btn").addClass("btn btn-primary").removeClass('workflow-link btn-default');
$('#citb_closeaccount').parent().parent().css('display', 'none');
$('#citb_uniquelearnernumber').prop('disabled', true);
$('#citb_registrationnumber').prop('disabled', true);
$('#citb_nationalinsurancenumber').prop('disabled', true);
$('#citb_individualidentifier').prop('disabled', true);
$('#firstname').prop('disabled', true);
$('#lastname').prop('disabled', true);
$('#citb_dob').parent().find('*').attr('disabled', false);


var birthdate = $('#citb_dob').val();
//alert(calculateAgeLatest(birthdate,new Date()));
if (birthdate && calculateAgeLatest(birthdate, new Date()) < 18) {
    $("label[for='citb_parentguardingname']").parent().attr('class', 'info required');
    CreateValidator('citb_parentguardingname', 'Parent Guardian Name');
    $("label[for='citb_relationshiptocarer']").parent().attr('class', 'info required');
    CreateValidator('citb_relationshiptocarer', 'Relationship to Carer');
}
else {
    $('#citb_parentguardingname').css('display', 'none');
    $("label[for='citb_parentguardingname']").css('display', 'none');
    $('#citb_relationshiptocarer').css('display', 'none');
    $("label[for='citb_relationshiptocarer']").css('display', 'none');
}


// this is triggered once date of birth is changed
var dpcontrol = $('div.control')[5];
$(dpcontrol).on("dp.change", function (e) {
    var birthdate = e.date;

    var age = calculateAgeLatest(birthdate, new Date());

    if (age < 18) {
        $("label[for='citb_parentguardingname']").parent().attr('class', 'info required');
        CreateValidator('citb_parentguardingname', 'Parent Guardian Name');
        $("label[for='citb_relationshiptocarer']").parent().attr('class', 'info required');
        CreateValidator('citb_relationshiptocarer', 'Relationship to Carer');
        $('#citb_parentguardingname').css('display', '');
        $("label[for='citb_parentguardingname']").css('display', '');
        $('#citb_relationshiptocarer').css('display', '');
        $("label[for='citb_relationshiptocarer']").css('display', '');
    }
    else {
        removeValidator('citb_relationshiptocarer');
        $('#citb_parentguardingname').css('display', 'none');
        $("label[for='citb_parentguardingname']").css('display', 'none');
        removeValidator('citb_parentguardingname');
        $('#citb_relationshiptocarer').css('display', 'none');
        $("label[for='citb_relationshiptocarer']").css('display', 'none');

    }

});