const FORM_VALIDATOR_NOT_REQUIRED = "";
const FORM_VALIDATOR_MUST_BE_FILLED = "must_be_filled";
const FORM_VALIDATOR_MUST_BE_FILLED_WITH_VALID_EMAIL = "must_be_filled_with_valid_email";
const FORM_VALIDATOR_MUST_BE_FILLED_WITH_ONLY_NUMBERS = "must_be_filled_with_only_numbers";
const FORM_VALIDATOR_MUST_BE_VALID_PASSWORD = "must_be_valid_password";
const FORM_VALIDATOR_NEW_PASSWORD_WITH_DOUBLE_INPUT_FIELDS = "new_password_with_double_input_fields";
const FORM_VALIDATOR_MUST_BE_FILLED_WITH_VALID_PASSWORD = "must_be_filled_with_valid_password";
const FORM_VALIDATOR_RECAPTCHA = "recaptcha";

    function FormDataClass(form)
    {
        this.form   = form;
        this.groups = {};
        this.successfulValidation = false;
        this.setInputElements();
    }

    FormDataClass.prototype.getErrorMessage = function(withHtml)
    {
        if(this.groups === undefined || this.successfulValidation)
        {
            return '';
        }
        let completeErrorMessage = '';
        let errorMessage = '';
        let object;
        for(let key in this.groups)
        {
            if(!this.groups.hasOwnProperty(key))
            {
                continue;
            }
            object = this.groups[key];
            if(object === undefined)
            {
                continue;
            }
            errorMessage = object.getErrorMessage()
            if(errorMessage === undefined || errorMessage === '')
            {
                continue;
            }
            if(completeErrorMessage.length > 0)
            {
                completeErrorMessage+= "\n";
            }
            if(withHtml)
            {
                completeErrorMessage+='<li>';
            }
            completeErrorMessage+= errorMessage;
            if(withHtml)
            {
                completeErrorMessage+='</li>';
            }
        }
        return completeErrorMessage;
    }

    FormDataClass.prototype.getForm = function()
    {
        return this.form;
    }

    FormDataClass.prototype.releaseInstances = function ()
    {
        if(this.groups === undefined)
        {
            return ;
        }
        let object;
        for(let key in this.groups)
        {
            if(!this.groups.hasOwnProperty(key))
            {
                continue;
            }
            object = this.groups[key];
            if(object === undefined)
            {
                continue;
            }
            object.releaseInstances();
        }
        this.groups = {};
    }

    FormDataClass.prototype.setIndicators = function()
    {
        if(this.groups === undefined)
        {
            return ;
        }
        let object;
        for(let key in this.groups)
        {
            if(!this.groups.hasOwnProperty(key))
            {
                continue;
            }
            object = this.groups[key];
            if(object === undefined)
            {
                continue;
            }
            object.setIndictor();
            if(!object.isSuccessfulValidation())
            {
                this.successfulValidation = false;
            }
        }
    }

    FormDataClass.prototype.setInputElements = function()
    {
        if(this.form === undefined)
        {
            return;
        }

        let input;
        let formGroupHandler;
        let formDataClass = this;

        this.form.find(":input").each(function(index){
            input = new FormInputDataClass($fv(this), formDataClass, index);

            if(formDataClass.groups[input.group] === undefined)
            {
                formDataClass.groups[input.group] = new FormGroupHandler(formDataClass);
            }
            formGroupHandler = formDataClass.groups[input.group];
            formGroupHandler.addInput(input);
            //Just add the item if it's a standalone item or it's a group item but not a combined input group item (checkbox / radio / combined selects)
        });
    }

    FormDataClass.prototype.validateInputs = function()
    {
        if(this.groups === undefined)
        {
            return ;
        }
        let object;
        this.successfulValidation = true;
        for(let key in this.groups)
        {
            if(!this.groups.hasOwnProperty(key))
            {
                continue;
            }
            object = this.groups[key];
            if(object === undefined)
            {
                continue;
            }
            if(!object.validateInput())
            {
                this.successfulValidation = false;
            }
        }
        formValidatorProcessSpecialValidations();
    }
    const FORM_INPUT_SEQUENCE_TYPE_INPUT            = 1;
    const FORM_INPUT_SEQUENCE_TYPE_COMBINED_INPUT   = 2;

    function FormGroupHandler(form)
    {
        this.form = form;
        this.formInputOptionHandler = {};
        this.formInputSequence = [];
        this.objectKeyIndex = 0;
        this.optionHandlerKey = 0;
        this.objectKeys = undefined;
        this.optionHandlerKeys = undefined;
        BaseHandler.call(this);
    }

    FormGroupHandler.prototype = Object.create(BaseHandler.prototype);
    FormGroupHandler.prototype.constructor = FormGroupHandler;

    FormGroupHandler.prototype.addInput = function (input)
    {
        if(input === undefined)
        {
            return;
        }

        if(input.isCombinedInput()) {
            this.addCombinedInput(input);
        } else {
            this.addObject(input);
        }
    }

    FormGroupHandler.prototype.addObject = function (object)
    {
        BaseHandler.prototype.addObject.call(this, object);
        this.formInputSequence.push(FORM_INPUT_SEQUENCE_TYPE_INPUT);
    }

    FormGroupHandler.prototype.addCombinedInput = function (input) {
        if(input === undefined || input.combinedInputGroup === undefined)
        {
            return;
        }

        if(this.formInputOptionHandler[input.combinedInputGroup] === undefined)
        {
            this.formInputOptionHandler[input.combinedInputGroup] = new FormInputOptionHandler(this.form);
            this.formInputSequence.push(FORM_INPUT_SEQUENCE_TYPE_COMBINED_INPUT);
        }
        this.formInputOptionHandler[input.combinedInputGroup].addObject(input);
    }

    FormGroupHandler.prototype.getInputOrInputOptionHandler = function (key)
    {
        if(key === undefined || this.formInputSequence === undefined || this.objects === undefined || this.formInputOptionHandler === undefined)
        {
            return undefined;
        }

        if(!this.formInputSequence.hasOwnProperty(key))
        {
            return undefined;
        }

        let object = this.formInputSequence[key];
        if(object === undefined)
        {
            return undefined;
        }

        let index;

        if(object === FORM_INPUT_SEQUENCE_TYPE_INPUT)
        {
            // noinspection DuplicatedCode it's separate to make the logic easier
            if(this.objectKeys === undefined || this.objectKeys[this.objectKeyIndex] === undefined || !this.objects.hasOwnProperty(this.objectKeys[this.objectKeyIndex]) || this.objects[this.objectKeys[this.objectKeyIndex]] === undefined)
            {
                this.objectKeyIndex++;
                return undefined;
            }
            index = this.objectKeyIndex;
            this.objectKeyIndex++;
            return this.objects[this.objectKeys[index]];
        }

        if(object === FORM_INPUT_SEQUENCE_TYPE_COMBINED_INPUT)
        {
            // noinspection DuplicatedCode it's separate to make the logic easier
            if(this.optionHandlerKeys === undefined || this.optionHandlerKeys[this.optionHandlerKey] === undefined || !this.formInputOptionHandler.hasOwnProperty(this.optionHandlerKeys[this.optionHandlerKey]) || this.formInputOptionHandler[this.optionHandlerKeys[this.optionHandlerKey]] === undefined)
            {
                this.optionHandlerKey++;
                return undefined;
            }
            index = this.optionHandlerKey;
            this.optionHandlerKey++;
            return this.formInputOptionHandler[this.optionHandlerKeys[index]];
        }

        return undefined;
    }

    FormGroupHandler.prototype.getErrorMessage = function()
    {
        if(this.objects === undefined || this.formInputOptionHandler === undefined || this.formInputSequence === undefined)
        {
            return '';
        }
        let successfulValidation = false;
        let errorMessage         = '';
        let object;
        this.objectKeys          = Object.keys(this.objects);
        this.optionHandlerKeys   = Object.keys(this.formInputOptionHandler);

        this.objectKeyIndex      = 0;
        this.optionHandlerKey    = 0;

        for(let key in this.formInputSequence)
        {

            // noinspection JSUnfilteredForInLoop the check is done in the function itself
            object = this.getInputOrInputOptionHandler(key);
            if(object === undefined)
            {
                continue;
            }

            if(object instanceof FormInputDataClass)
            {
                if(object.successfulValidation)
                {
                    //Input is successfully validated so the group is fully validated so no need to continue looping
                    successfulValidation = true;
                    break;
                }
            }
            else if(object instanceof FormInputOptionHandler)
            {
                if(object.isSuccessfulValidation())
                {
                    //InputOptionHandler is successfully validated so the group is fully validated so no need to continue looping
                    successfulValidation = true;
                    break;
                }
            }
            if(errorMessage.length > 0)
            {
                errorMessage+= ' of ';
            }
            errorMessage+= object.errorMessage;
        }

        if(successfulValidation)
        {
            return '';
        }
        return errorMessage;
    }

    FormGroupHandler.prototype.isSuccessfulValidation = function ()
    {
        if(this.objects === undefined || this.formInputOptionHandler === undefined || this.formInputSequence === undefined)
        {
            return '';
        }
        let object;

        this.objectKeys          = Object.keys(this.objects);
        this.optionHandlerKeys   = Object.keys(this.formInputOptionHandler);

        this.objectKeyIndex      = 0;
        this.optionHandlerKey    = 0;

        for(let key in this.formInputSequence)
        {
            // noinspection JSUnfilteredForInLoop the check is done in the function itself
            object = this.getInputOrInputOptionHandler(key);
            if(object === undefined)
            {
                continue;
            }

            if(object instanceof FormInputDataClass)
            {
                if(object.successfulValidation)
                {
                    //Input is successfully validated so the group is fully validated so no need to continue looping
                    return true;
                }
            }
            else if(object instanceof FormInputOptionHandler)
            {
                if(object.isSuccessfulValidation())
                {
                    //InputOptionHandler is successfully validated so the group is fully validated so no need to continue looping
                    return true;
                }
            }
        }

        return false;
    }

    FormGroupHandler.prototype.loadItemsFromInput = function (input)
    {
        if(input === undefined)
        {
            return ;
        }

        this.loadItemsWithSelector(":input[group=\""+input.group+"\"]");
    }

    FormGroupHandler.prototype.loadItemsWithSelector = function (selector)
    {
        if(selector === undefined)
        {
            return ;
        }

        let result;
        if(this.form !== undefined)
        {
            result = this.form.find(selector);
        }
        else
        {
            result = $fv.find(selector);
        }

        let object;
        for(let key in result)
        {
            if(!result.hasOwnProperty(key))
            {
                continue;
            }
            object = result[key];
            if(object === undefined)
            {
                continue;
            }
            this.addInput(new FormInputDataClass($fv(object), this.form, key));
        }
    }

    FormGroupHandler.prototype.releaseInstances = function()
    {
        let object;

        this.objectKeys          = Object.keys(this.objects);
        this.optionHandlerKeys   = Object.keys(this.formInputOptionHandler);

        this.objectKeyIndex      = 0;
        this.optionHandlerKey    = 0;

        for(let key in this.formInputSequence)
        {
            // noinspection JSUnfilteredForInLoop the check is done in the function itself
            object = this.getInputOrInputOptionHandler(key);
            if(object === undefined)
            {
                continue;
            }

            if(object instanceof FormInputDataClass)
            {
                this.removeObject(object);
                continue;
            }
            if(object instanceof FormInputOptionHandler)
            {
                object.releaseInstances();
            }
        }

        this.formInputOptionHandler = {};
        this.formInputSequence = [];
        this.objectKeyIndex = 0;
        this.optionHandlerKey = 0;
        this.objectKeys = undefined;
        this.optionHandlerKeys = undefined;
    }

    FormGroupHandler.prototype.setIndictor = function()
    {
        if(this.objects === undefined || this.formInputOptionHandler === undefined)
        {
            return false;
        }
        let object;
        let successfulValidation = this.isSuccessfulValidation();

        for(let key in this.objects)
        {
            if(!this.objects.hasOwnProperty(key))
            {
                continue;
            }
            object = this.objects[key];
            if(object === undefined)
            {
                continue;
            }

            object.setIndictor(successfulValidation);
        }

        for(let key in this.formInputOptionHandler)
        {
            if(!this.formInputOptionHandler.hasOwnProperty(key))
            {
                continue;
            }
            object = this.formInputOptionHandler[key];
            if(object === undefined)
            {
                continue;
            }

            object.setIndictor(successfulValidation);
        }
    }

    FormGroupHandler.prototype.validateInput = function()
    {
        if(this.objects === undefined || this.formInputOptionHandler === undefined || this.formInputSequence === undefined)
        {
            return false;
        }
        let object;
        let result = false;

        this.objectKeys          = Object.keys(this.objects);
        this.optionHandlerKeys   = Object.keys(this.formInputOptionHandler);

        this.objectKeyIndex      = 0;
        this.optionHandlerKey    = 0;

        for(let key in this.formInputSequence)
        {
            // noinspection JSUnfilteredForInLoop the check is done in the function itself
            object = this.getInputOrInputOptionHandler(key);
            if(object === undefined)
            {
                continue;
            }

            if(object instanceof FormInputDataClass)
            {
                if(object.validateInput())
                {
                    result = true;
                    break;
                }
            }
            else if(object instanceof FormInputOptionHandler)
            {
                if(object.validateInput())
                {
                    result = true;
                    break;
                }
            }
        }

        return result;
    }
    function FormInputOptionHandler(form)
    {
        this.form = form;
        this.errorMessage = '';
        BaseHandler.call(this);
    }

    FormInputOptionHandler.prototype = Object.create(BaseHandler.prototype);
    FormInputOptionHandler.prototype.constructor = FormInputOptionHandler;

    FormInputOptionHandler.prototype.addObject = function (object)
    {
        BaseHandler.prototype.addObject.call(this, object);
        if(object !== undefined && this.errorMessage.length === 0 && object.errorMessage !== undefined)
        {
            this.errorMessage = object.errorMessage;
        }
    }

    FormInputOptionHandler.prototype.loadItemsFromInput = function (input)
    {
        if(input === undefined)
        {
            return ;
        }

        let result;
        let selector = ":input[combined_input_group=\""+input.combinedInputGroup+"\"]";
        if(this.form !== undefined)
        {
            result = this.form.find(selector);
        }
        else
        {
            result = $fv.find(selector);
        }

        let object;
        for(let key in result)
        {
            if(!result.hasOwnProperty(key))
            {
                continue;
            }
            object = result[key];
            if(object === undefined)
            {
                continue;
            }
            this.addObject(new FormInputDataClass($fv(object), this.form, key));
        }
    }

    FormInputOptionHandler.prototype.isSuccessfulValidation = function()
    {
        if(this.objects === undefined)
        {
            return true;
        }
        let input;
        for(let key in this.objects)
        {
            if(!this.objects.hasOwnProperty(key))
            {
                continue;
            }
            input = this.objects[key];
            if(input === undefined)
            {
                continue;
            }
            if(input.successfulValidation)
            {
                return true;
            }
        }
        return false;
    }

    FormInputOptionHandler.prototype.releaseInstances = function()
    {
        if(this.objects !== undefined) {
            for (let key in this.objects) {
                if (!this.objects.hasOwnProperty(key)) {
                    continue;
                }
                this.removeObject(this.objects[key]);
            }
        }

        this.form = undefined;
        this.errorMessage = '';
    }

    FormInputOptionHandler.prototype.setIndictor = function(successfulValidation)
    {
        if(this.objects === undefined)
        {
            return;
        }
        let input;

        for(let key in this.objects)
        {
            if(!this.objects.hasOwnProperty(key))
            {
                continue;
            }
            input = this.objects[key];
            if(input === undefined)
            {
                continue;
            }
            if(input.isCheckboxOrRadio() && successfulValidation && input.successfulValidation)
            {
                /**
                 * When it's a checkbox / radio and the complete input is valid we need to find the one input that was valid.
                 * If not we can't set the correct indicator, because if we use a non valid input, the indicator will be set to required.
                 */
                input.setIndictor(successfulValidation)
                return ;
            }
            input.setIndictor(successfulValidation);
        }

        if(input !== undefined && input.isCheckboxOrRadio())
        {
            /**
             * If the input is a checkbox / radio and it reaches here then no input was valid and the last input should handle the indicator
             */
            input.setIndictor(successfulValidation);
        }
    }

    FormInputOptionHandler.prototype.validateInput = function()
    {
        if(this.objects === undefined)
        {
            return false;
        }
        let input;
        let result = false;

        for(let key in this.objects)
        {
            if(!this.objects.hasOwnProperty(key))
            {
                continue;
            }
            input = this.objects[key];
            if(input === undefined)
            {
                continue;
            }

            input = this.objects[key];
            result = input.validateInput();
            if(!result && !input.isCheckboxOrRadio())
            {
                //It's not a checkbox / radio so all input is required to be filled, if we encounter a false the complete input is not valid and we can return
                return false;
            }
            if(result && input.isCheckboxOrRadio())
            {
                //It's a checkbox / radio so only one input is needed to be valid for the complete input to be valid so we can return here.
                return true;
            }
        }

        //If it's a checkbox / radio input this will return false, with other inputs this will return true
        return result;
    }
    function FormInputDataClass(jqueryElement, form, index)
    {
        this.formValidation = undefined;
        this.name = undefined;
        this.group = undefined
        this.combinedInputGroup = undefined
        this.defaultGroupGeneration = false
        this.form = form;
        this.inputId = undefined;
        this.successfulValidation = false;
        this.inputType = undefined;
        this.errorMessage = '';
        this.indicatorIcon = undefined;

        BaseDataClass.call(this);
        this.setJqueryElement(jqueryElement, index);
    }

    FormInputDataClass.prototype = Object.create(BaseDataClass.prototype);
    FormInputDataClass.prototype.constructor = FormInputDataClass;

    FormInputDataClass.prototype.isCheckboxOrRadio = function()
    {
        return this.inputType === "radio" || this.inputType === "checkbox";
    }

    FormInputDataClass.prototype.isCombinedInput = function()
    {
        return this.combinedInputGroup !== undefined;
    }

    FormInputDataClass.prototype.isGroupInput = function()
    {
        return this.defaultGroupGeneration === false && this.group !== undefined;
    }

    FormInputDataClass.prototype.objectIsBeingRemoved = function()
    {
        BaseDataClass.prototype.objectIsBeingRemoved.call(this);
        this.formValidation = undefined;
        this.name = undefined;
        this.group = undefined
        this.combinedInputGroup = undefined
        this.defaultGroupGeneration = false
        this.form = undefined;
        this.inputId = undefined;
        this.successfulValidation = false;
        this.inputType = undefined;
        this.errorMessage = '';
        this.indicatorIcon = undefined;
    }

    FormInputDataClass.prototype.setIndictor = function(successfulValidation)
    {
        if(this.jqueryElement === undefined || this.formValidation === undefined || this.indicatorIcon === undefined)
        {
            return ;
        }

        if(successfulValidation)
        {
            this.jqueryElement.removeClass(FORM_INPUT_REQUIRED_CSS_CLASS);
        }
        else
        {
            this.jqueryElement.addClass(FORM_INPUT_REQUIRED_CSS_CLASS);
        }

        let input = this;

        this.jqueryElement.parent().find("span.icon").each(function(){
            let inputElement = $fv(this);
            inputElement.removeClass("icon-input-ok icon-input-nok icon-input-verplicht");
            inputElement.addClass(input.indicatorIcon);
        });
    }

    FormInputDataClass.prototype.setJqueryElement = function(jqueryElement, index)
    {
        BaseDataClass.prototype.setJqueryElement.call(this, jqueryElement);
        if(this.jqueryElement !== undefined)
        {
            this.formValidation     = this.jqueryElement.attr('form_validation');
            this.name               = this.jqueryElement.attr('name');
            this.group              = this.jqueryElement.attr('group');
            this.combinedInputGroup = this.jqueryElement.attr('combined_input_group');
            this.inputId            = this.jqueryElement.attr('id');
            this.inputType          = this.jqueryElement.attr('type');
            this.errorMessage       = this.jqueryElement.attr(FORM_ERROR_MESSAGE_ATTRIBUTE_NAME);
            if(this.errorMessage === undefined)
            {
                this.errorMessage = '';
            }

            //Set this to true so the input won't be processed because it's not needed
            this.successfulValidation = this.formValidation === undefined;

            if(this.inputId === undefined || this.inputId === '')
            {
                this.setId(generateUUID());
            }
            else
            {
                this.setId(this.inputId);
            }

            if(this.group === undefined)
            {
                this.defaultGroupGeneration = true;
                if(this.combinedInputGroup === undefined) {
                    this.group = "internal_form_validation_group_name_" + index;
                }
                else {
                    this.group = this.combinedInputGroup;
                }
            }
        }
    }

    FormInputDataClass.prototype.validateInput = function()
    {
        this.indicatorIcon          = undefined;
        if(this.successfulValidation || this.formValidation === undefined)
        {
            this.indicatorIcon = 'icon-input-ok';
            return true;
        }

        this.successfulValidation = formValidatorValidateInput(this);

        if(this.successfulValidation) {
            this.indicatorIcon = 'icon-input-ok';
        }
        if(this.indicatorIcon === undefined || this.indicatorIcon === '')
        {
            this.indicatorIcon = 'icon-input-verplicht';
        }
        return this.successfulValidation;
    }
    let $fv = jQuery.noConflict();

    const FORM_INPUT_REQUIRED_CSS_CLASS 	    = "verplicht";
    const FORM_ERROR_MESSAGE_ATTRIBUTE_NAME  	= "hiddenplaceholder";
    const FORM_EMAIL_REGEX                      = new RegExp(/^((([a-z]|\d|[!#$%&'*+\-\/=?^_`{|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#$%&'*+\-\/=?^_`{|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)(((([\x20\x09])*(\x0d\x0a))?([\x20\x09])+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*((([\x20\x09])*(\x0d\x0a))?([\x20\x09])+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
    const FORM_NUMBER_REGEX                     = new RegExp(/^(-)?\d*(\.\d+)?$/);
    const FORM_PASSWORD_STRENGHT                = 20;

    let formValidatorInterval	                = undefined;
    let formValidatorPasswordInputs             = undefined;
    let formValidatorReCaptchaIds               = {};

    function validateForm(formId, withReturn ,errorMessageHtmlId, withMessage)
    {
        formValidatorPasswordInputs = [];
        let form = new FormDataClass($fv('#'+formId));
        form.validateInputs();
        form.setIndicators();

        if(!form.successfulValidation && withMessage)
        {
            let errorMessage = form.getErrorMessage(errorMessageHtmlId !== undefined && errorMessageHtmlId !== '');
            if(errorMessageHtmlId !== undefined && errorMessageHtmlId !== '')
            {
                let errorMessageElement = $fv("."+errorMessageHtmlId);
                errorMessageElement.css({display:"block"})
                errorMessageElement.find(".foutmeldingvergeten").html("<ul class=\""+errorMessageElement.data("extraclasses-for-ul")+"\">"+errorMessage+"</ul>");
            }
            else
            {
                alert(errorMessage);
            }
        }
        form.releaseInstances();
        formValidatorPasswordInputs = [];
        if(withReturn)
        {
            form.form = undefined;
            return form.successfulValidation;
        }
        if(form.successfulValidation)
        {
            form.form.submit();
            form.form = undefined;
        }
    }

    function formValidatorCheckFormInputOnBlur(inputElement)
    {
        if(inputElement === undefined)
        {
            return ;
        }
        formValidatorClearFormValidatorTimeOut();

        formValidatorPasswordInputs = [];
        let input = new FormInputDataClass($fv(inputElement), undefined, 0);

        // noinspection JSUnresolvedVariable variables come from PHP
        if(input.formValidation === FORM_VALIDATOR_NEW_PASSWORD_WITH_DOUBLE_INPUT_FIELDS)
        {
            //new Passwords is a special situation it can't be handled via a class at this moment
            $fv(":input[form_validation=\""+input.formValidation+"\"]").each(function (){
                let input = new FormInputDataClass($fv(this), undefined, 0);
                input.setIndictor(input.validateInput());
                //input.releaseInstances();
            })
            formValidatorProcessSpecialValidations();

            let object;

            for(let key in formValidatorPasswordInputs)
            {
                // noinspection JSUnfilteredForInLoop the check is done in the function itself
                object = formValidatorPasswordInputs[key];
                if(object === undefined)
                {
                    continue;
                }
                object.objectIsBeingRemoved();
            }

            formValidatorPasswordInputs = [];
            return ;
        }
        if(formValidatorCheckFormInputOnBlurCustom(inputElement))
        {
            formValidatorProcessSpecialValidations();
            return;
        }
        if(input.isGroupInput())
        {
            let groupHandler = new FormGroupHandler();
            groupHandler.loadItemsFromInput(input);
            groupHandler.validateInput();
            formValidatorProcessSpecialValidations();
            groupHandler.setIndictor();
            groupHandler.releaseInstances();
            return ;
        }
        if(input.isCombinedInput())
        {
            let inputOptionHandler = new FormInputOptionHandler();
            inputOptionHandler.loadItemsFromInput(input);
            inputOptionHandler.validateInput();
            formValidatorProcessSpecialValidations();
            inputOptionHandler.setIndictor();
            inputOptionHandler.releaseInstances();
            return ;
        }

        let result = input.validateInput();
        formValidatorProcessSpecialValidations();
        input.setIndictor(result);
        input.objectIsBeingRemoved();
    }

    // noinspection JSUnusedLocalSymbols inputElement might be used by custom implementations
    function formValidatorCheckFormInputOnBlurCustom(inputElement)
    {
        return false;//return true if the it's been handled by a custom implementation
    }

    function formValidatorCheckFormInputAfterInterval(inputElement)
    {
        if(inputElement === undefined)
        {
            return ;
        }
        formValidatorClearFormValidatorTimeOut();
        formValidatorInterval = setTimeout(function(){formValidatorCheckFormInputOnBlur(inputElement);}, 375);
    }

    function formValidatorCheckPasswordInputs()
    {
        if(formValidatorPasswordInputs === undefined)
        {
            return;
        }

        let passwordInput = undefined;
        let firstPasswordInput = undefined;
        for(let key in formValidatorPasswordInputs)
        {
            if(!formValidatorPasswordInputs.hasOwnProperty(key))
            {
                continue;
            }
            passwordInput = formValidatorPasswordInputs[key];
            if(passwordInput === undefined)
            {
                continue;
            }
            if(!passwordInput.successfulValidation)
            {
                //If it's not successfully validated, no point in checking the rest of the validation.
                continue;
            }
            if(firstPasswordInput === undefined)
            {
                if(passwordInput.jqueryElement === undefined)
                {
                    passwordInput.successfulValidation  = false;
                    passwordInput.indicatorIcon         = 'icon-input-nok';
                    passwordInput.setIndictor(passwordInput.successfulValidation);
                    continue;
                }
                firstPasswordInput = passwordInput;
                continue;
            }

            if(passwordInput.jqueryElement === undefined)
            {
                passwordInput.successfulValidation  = false;
                passwordInput.indicatorIcon         = 'icon-input-nok';
                passwordInput.setIndictor(passwordInput.successfulValidation);
                continue;
            }

            if(firstPasswordInput.jqueryElement.val() !== passwordInput.jqueryElement.val())
            {
                passwordInput.successfulValidation  = false;
                passwordInput.indicatorIcon         = 'icon-input-nok';
                passwordInput.errorMessage          += ' - Wachtwoorden komen niet overeen';
                passwordInput.setIndictor(passwordInput.successfulValidation);
            }
        }
    }

    function formValidatorClearFormValidatorTimeOut()
    {
        if(formValidatorInterval !== undefined)
        {
            clearTimeout(formValidatorInterval);
        }
    }

    function formValidatorisValueValidEmailAddress(value)
    {
        if(value === undefined || value === '')
        {
            return false;
        }

        return FORM_EMAIL_REGEX.test(value);
    }

    function formValidatorMustBeFilled(input)
    {
        if (input === undefined || input.jqueryElement === undefined) {
            return false;
        }

        let value = input.jqueryElement.val();
        if(value !== undefined && value !== '')
        {
            return true;
        }
        input.indicatorIcon = 'icon-input-verplicht';
        return false;
    }

    function formValidatorMustBeFilledWithOnlyNumbers(input)
    {
        if (input === undefined || input.jqueryElement === undefined) {
            return false;
        }

        let value = input.jqueryElement.val();
        if(value === undefined || value === '')
        {
            input.indicatorIcon = 'icon-input-verplicht';
            return false;
        }
        if(FORM_NUMBER_REGEX.test(value))
        {
            return true;
        }
        input.indicatorIcon = 'icon-input-nok';
        return false;
    }

    function formValidatorMustBeFilledWithValidEmail(input)
    {
        if (input === undefined || input.jqueryElement === undefined) {
            return false;
        }

        let value = input.jqueryElement.val();
        if(value === undefined || value === '')
        {
            input.indicatorIcon = 'icon-input-verplicht';
            return false;
        }
        if(formValidatorisValueValidEmailAddress(value))
        {
            return true;
        }
        input.indicatorIcon = 'icon-input-nok';
        return false;
    }

    function formValidatorMustBeFilledWithValidPassword(input)
    {
        if (input === undefined || input.jqueryElement === undefined) {
            return false;
        }

        let value = input.jqueryElement.val();
        if(value === undefined || value === '')
        {
            input.indicatorIcon = 'icon-input-verplicht';
            return false;
        }
        if(checkPasswordStrength(value) > FORM_PASSWORD_STRENGHT)
        {
            return true;
        }
        input.indicatorIcon = 'icon-input-nok';
        input.errorMessage += ' - Wachtwoord is niet sterk genoeg';
        return false;
    }

    function formValidatorNewPasswordWithDoubleInputFields(input)
    {
        if (input === undefined || input.jqueryElement === undefined) {
            return false;
        }

        if(formValidatorPasswordInputs !== undefined) {
            formValidatorPasswordInputs.push(input);
        }
        return formValidatorMustBeFilledWithValidPassword(input);
    }

    function formValidatorMustBeValidPassword(input)
    {
        if (input === undefined || input.jqueryElement === undefined) {
            return false;
        }

        let value = input.jqueryElement.val();
        if(value === undefined || value === '' || checkPasswordStrength(value) > FORM_PASSWORD_STRENGHT)
        {
            return true;
        }
        input.indicatorIcon = 'icon-input-nok';
        input.errorMessage += ' - Wachtwoord is niet sterk genoeg';
        return false;
    }

    function formValidatorProcessSpecialCustomValidations()
    {

    }

    function formValidatorProcessSpecialValidations()
    {
        formValidatorProcessSpecialCustomValidations();
        if(formValidatorPasswordInputs !== undefined)
        {
            formValidatorCheckPasswordInputs();
        }
    }

    function formValidatorReCaptcha(input)
    {
        // noinspection JSUnresolvedVariable grecaptcha probably set by Google ReCaptcha?
        if(input === undefined || input.jqueryElement === undefined || typeof grecaptcha === 'undefined' || formValidatorReCaptchaIds === undefined)
        {
            return false;
        }

        let recaptchaId = input.jqueryElement.attr('id');

        try {
            // noinspection JSUnresolvedVariable,JSUnresolvedFunction grecaptcha / getResponse probably set by Google ReCaptcha?
            if (formValidatorReCaptchaIds.hasOwnProperty(recaptchaId) && !grecaptcha.getResponse(formValidatorReCaptchaIds[recaptchaId])) {
                input.errorMessage = input.jqueryElement.data('captcha_error_message');
                // noinspection JSUnresolvedVariable grecaptcha probably set by Google ReCaptcha?
                grecaptcha.reset(formValidatorReCaptchaIds[recaptchaId]);
                return false;
            }
        } catch (e) {
            return false;
        }

        return true;
    }

    function formValidatorValidateCheckboxOrRadio(input)
    {
        if(input === undefined || input.jqueryElement === undefined)
        {
            return false;
        }

        return input.jqueryElement.is(":checked");
    }

    // noinspection JSUnusedLocalSymbols input might be used by custom implementations
    function formValidatorValidateCustomValidation(input)
    {
        return false;
    }

    function formValidatorValidateInput(input) {
        if (input === undefined) {
            return false;
        }
        if (input.formValidation === undefined || input.formValidation === '') {
            return true;
        }

        // noinspection JSUnresolvedVariable variables come from PHP
        switch (input.formValidation) {
            case FORM_VALIDATOR_NOT_REQUIRED:
                return true;

            case FORM_VALIDATOR_MUST_BE_FILLED:
                if (input.isCheckboxOrRadio()) {
                    return formValidatorValidateCheckboxOrRadio(input);
                }
                return formValidatorMustBeFilled(input);

            case FORM_VALIDATOR_MUST_BE_FILLED_WITH_VALID_EMAIL:
                return formValidatorMustBeFilledWithValidEmail(input);

            case FORM_VALIDATOR_MUST_BE_FILLED_WITH_ONLY_NUMBERS:
                return formValidatorMustBeFilledWithOnlyNumbers(input);

            case FORM_VALIDATOR_MUST_BE_VALID_PASSWORD:
                return formValidatorMustBeValidPassword(input);

            case FORM_VALIDATOR_NEW_PASSWORD_WITH_DOUBLE_INPUT_FIELDS:
                return formValidatorNewPasswordWithDoubleInputFields(input);

            case FORM_VALIDATOR_MUST_BE_FILLED_WITH_VALID_PASSWORD:
                return formValidatorMustBeFilledWithValidPassword(input);

            case FORM_VALIDATOR_RECAPTCHA:
                return formValidatorReCaptcha(input);

            default:
                return formValidatorValidateCustomValidation(input);
        }
    }

    function checkPasswordStrength(wachtwoord)
    {
        let strength = 0;
        let numberOfRegMatches;

        //Punten voor kleine letters
        strength+= getNumberOfRegMatchesInString(wachtwoord, /[a-zA-Z]/g);

        //Punten voor cijfers
        strength+= getNumberOfRegMatchesInString(wachtwoord, /[0-9]/g, 4)*2;

        //Punten voor speciale tekens
        numberOfRegMatches = getNumberOfRegMatchesInString(wachtwoord, /[!@#$%^&*?_~=+-]/g, 4);
        if(numberOfRegMatches > 0)
        {
            strength+= numberOfRegMatches*2;
        }

        //Punten voor combinaties
        numberOfRegMatches = getNumberOfRegMatchesInString(wachtwoord, /([a-z]+?[A-Z])|([A-Z]+?[a-z])/g, 4);
        if(numberOfRegMatches > 0)
        {
            strength+= numberOfRegMatches*4;
        }

        //Punten voor combinaties
        numberOfRegMatches = getNumberOfRegMatchesInString(wachtwoord, /([a-zA-Z]+?[0-9])|([0-9]+?[a-zA-Z])/g, 4);
        if(numberOfRegMatches > 0)
        {
            strength+= numberOfRegMatches*4;
        }

        //Punten voor combinaties
        numberOfRegMatches = getNumberOfRegMatchesInString(wachtwoord, /([a-zA-Z0-9]+?[!@#$%^&*?_~=+-])|([!@#$%^&*?_~=+-]+?[a-zA-Z0-9])/g, 4);
        if(numberOfRegMatches > 0)
        {
            strength+= numberOfRegMatches*4;
        }

        if (strength<0) { strength=0; }
        if (strength>40) { strength=40; }
        return strength;
    }

    function setReCaptchas()
    {
        $fv(document).ready(function() {

            $fv('input[id^="recaptcha-"]').each(function() {
                let element = $fv(this);
                let id = element.attr('id');
                // noinspection JSUnresolvedVariable grecaptcha probably set by Google ReCaptcha?
                formValidatorReCaptchaIds[id] = grecaptcha.render(id+'-container', {
                    "sitekey" 	: element.attr('data-sitekey'),
                    "theme" 	: element.attr('data-theme'),
                    "badge"		: element.attr('data-badge-position'),
                    "size"		: 'invisible'
                });

                executeReCaptcha(id);

                setInterval(function(){ executeReCaptcha(id); }, 60000 ); // Get new token every minute
            });

        });
    }

    function executeReCaptcha(id)
    {
        // noinspection JSUnresolvedVariable grecaptcha probably set by Google ReCaptcha?
        grecaptcha.execute()
            .then(function(token) {
                // Verify the token on the server.
                $fv('#'+id).val(token);
            });
    }