function $RF(el, radioGroup) {
    if($(el).type && $(el).type.toLowerCase() == 'radio') {
        var radioGroup = $(el).name;
        var el = $(el).form;
    } else if ($(el).tagName.toLowerCase() != 'form') {
        return false;
    }

    var checked = $(el).getInputs('radio', radioGroup).find(
            function(re) {return re.checked;}
    );
    return (checked) ? $F(checked) : null;
}

function $RFF(el, radioGroup) {
    if($(el).type && $(el).type.toLowerCase() == 'radio') {
        var radioGroup = $(el).name;
        var el = $(el).form;
    } else if ($(el).tagName.toLowerCase() != 'form') {
        return false;
    }
    return $(el).getInputs('radio', radioGroup).first();
}

function get_totals_element()
{
    // Search for OSC summary element
    var search_osc = $$('div.onestepcheckout-summary');

    if(search_osc.length > 0)    {
        return search_osc[0];
    }

    var search_cart = $$('div.shopping-cart-totals');

    if(search_cart.length > 0)    {
        return search_cart[0];
    }

    if($('shopping-cart-totals-table'))    {
        return $('shopping-cart-totals-table');
    }

}

function get_save_methods_function(url, update_payments)
{

    if(typeof update_payments == 'undefined')    {
        var update_payments = false;
    }
    return function(e)    {

        if(typeof e != 'undefined')    {
            var element = e.element();

            if(element.name != 'shipping_method')    {
                update_payments = false;
            }            
        }        

        var form = $('onestepcheckout-form');
        var shipping_method = $RF(form, 'shipping_method');
        var payment_method = $RF(form, 'payment[method]');

        var totals = get_totals_element();
        totals.update('<div class="loading-ajax">&nbsp;</div>');

        if(update_payments)    {
            var payment_methods = $$('div.payment-methods')[0];
            payment_methods.update('<div class="loading-ajax">&nbsp;</div>');
        }

        var parameters = {
                shipping_method: shipping_method,
                payment_method: payment_method
        }

        /* Find payment parameters and include */
        var items = $$('input[name^=payment]', 'select[name^=payment]');
        var names = items.pluck('name');
        var values = items.pluck('value');

        for(var x=0; x < names.length; x++)    {
            if(names[x] != 'payment[method]')    {
                parameters[names[x]] = values[x];    
            }
        }

        new Ajax.Request(url, {
            method: 'post',
            onSuccess: function(transport)    {
            if(transport.status == 200)    {
                var data = transport.responseText.evalJSON();

                totals.update(data.summary);

                if(update_payments)    {

                    payment_methods.update(data.payment_method);

                    $$('div.payment-methods input[name^=payment\[method\]]').invoke('observe', 'click', get_separate_save_methods_function(url));

                    $$('div.payment-methods input[name^=payment\[method\]]').invoke('observe', 'click', function() {
                        $$('div.onestepcheckout-payment-method-error').each(function(item) {
                            new Effect.Fade(item);
                        });                                                
                    });                        

                    if($RF(form, 'payment[method]') != null)    {
                        try    {
                            var payment_method = $RF(form, 'payment[method]');
                            $('container_payment_method_' + payment_method).show();
                            $('payment_form_' + payment_method).show();
                        } catch(err)    {

                        }
                    }

                }
            }
        },
        parameters: parameters
        });
    }
}    

function exclude_unchecked_checkboxes(data)
{
    var items = [];
    for(var x=0; x < data.length; x++)    {
        var item = data[x];
        if(item.type == 'checkbox')    {
            if(item.checked)    {
                items.push(item);
            }
        }
        else    {
            items.push(item);
        }
    }

    return items;
}

function get_save_billing_function(url, set_methods_url, update_payments)
{
    if(typeof update_payments == 'undefined')    {
        var update_payments = false;
    }

    return function()    {
        var form = $('onestepcheckout-form');
        var items = exclude_unchecked_checkboxes($$('input[name^=billing]', 'select[name^=billing]'));
        var names = items.pluck('name');
        var values = items.pluck('value');
        var parameters = {
                shipping_method: $RF(form, 'shipping_method')
        };


        var street_count = 0;
        for(var x=0; x < names.length; x++)    {
            if(names[x] != 'payment[method]')    {

                var current_name = names[x];

                if(names[x] == 'billing[street][]')    {
                    current_name = 'billing[street][' + street_count + ']';
                    street_count = street_count + 1;
                }

                parameters[current_name] = values[x];    
            }
        }

        var use_for_shipping = $('billing:use_for_shipping_yes');




        if(use_for_shipping && use_for_shipping.getValue() != '1')    {
            var items = $$('input[name^=shipping]', 'select[name^=shipping]');            
            var shipping_names = items.pluck('name');
            var shipping_values = items.pluck('value');
            var shipping_parameters = {};
            var street_count = 0;

            for(var x=0; x < shipping_names.length; x++)    {
                if(shipping_names[x] != 'shipping_method')    {
                    var current_name = shipping_names[x];
                    if(shipping_names[x] == 'shipping[street][]')    {
                        current_name = 'shipping[street][' + street_count + ']';
                        street_count = street_count + 1;
                    }

                    parameters[current_name] = shipping_values[x];    
                }
            }
        }


        var shipment_methods = $$('div.onestepcheckout-shipping-method-block')[0];
        var shipment_methods_found = false;

        if(typeof shipment_methods != 'undefined') {
            shipment_methods_found = true;
        }

        if(shipment_methods_found)  {
            shipment_methods.update('<div class="loading-ajax">&nbsp;</div>');
        }

        var payment_method = $RF(form, 'payment[method]');
        parameters['payment_method'] = payment_method;
        parameters['payment[method]'] = payment_method;
        
        var payment_methods = $$('div.payment-methods')[0];
        payment_methods.update('<div class="loading-ajax">&nbsp;</div>');

        var totals = get_totals_element();
        totals.update('<div class="loading-ajax">&nbsp;</div>');


        new Ajax.Request(url, {
            method: 'post',
            onSuccess: function(transport)    {
            if(transport.status == 200)    {    

                var data = transport.responseText.evalJSON();

                // Update shipment methods
                if(shipment_methods_found)  {
                    shipment_methods.update(data.shipping_method);
                }
                payment_methods.update(data.payment_method);
                totals.update(data.summary);

                // Add new event handlers

                if(shipment_methods_found)  {
                    $$('dl.shipment-methods input').invoke('observe', 'click', get_separate_save_methods_function(set_methods_url, update_payments));
                }

                $$('div.payment-methods input[name^=payment\[method\]]').invoke('observe', 'click', get_separate_save_methods_function(set_methods_url));        

                $$('div.payment-methods input[name^=payment\[method\]]').invoke('observe', 'click', function() {
                    $$('div.onestepcheckout-payment-method-error').each(function(item) {
                        new Effect.Fade(item);
                    });
                });

                if(shipment_methods_found)  {
                    $$('dl.shipment-methods input').invoke('observe', 'click', function() {
                        $$('div.onestepcheckout-shipment-method-error').each(function(item) {
                            new Effect.Fade(item);
                        });
                    });
                }

                if($RF(form, 'payment[method]') != null)    {
                    try    {
                        var payment_method = $RF(form, 'payment[method]');
                        $('container_payment_method_' + payment_method).show();
                        $('payment_form_' + payment_method).show();
                    } catch(err)    {

                    }
                }


            }
        },
        parameters: parameters
        });

    }
}

function get_separate_save_methods_function(url, update_payments)
{
    if(typeof update_payments == 'undefined')    {
        var update_payments = false;
    }

    return function(e)    {
        if(typeof e != 'undefined')    {
            var element = e.element();

            if(element.name != 'shipping_method')    {
                update_payments = false;
            }            
        }

        var form = $('onestepcheckout-form');
        var shipping_method = $RF(form, 'shipping_method');
        var payment_method = $RF(form, 'payment[method]');
        var totals = get_totals_element();
        
        totals.update('<div class="loading-ajax">&nbsp;</div>');

        if(update_payments)    {
            var payment_methods = $$('div.payment-methods')[0];
            payment_methods.update('<div class="loading-ajax">&nbsp;</div>');
        }

        var parameters = {
                shipping_method: shipping_method,
                payment_method: payment_method
        }

        /* Find payment parameters and include */
        var items = $$('input[name^=payment]', 'select[name^=payment]');
        var names = items.pluck('name');
        var values = items.pluck('value');

        for(var x=0; x < names.length; x++)    {
            if(names[x] != 'payment[method]')    {
                parameters[names[x]] = values[x];    
            }
        }

        new Ajax.Request(url, {
            method: 'post',
            onSuccess: function(transport)    {
            if(transport.status == 200)    {
                var data = transport.responseText.evalJSON();
                var form = $('onestepcheckout-form');

                totals.update(data.summary);

                if(update_payments)    {

                    payment_methods.update(data.payment_method);

                    $$('div.payment-methods input[name^=payment\[method\]]').invoke('observe', 'click', get_separate_save_methods_function(url));                            
                    $$('div.payment-methods input[name^=payment\[method\]]').invoke('observe', 'click', function() {
                        $$('div.onestepcheckout-payment-method-error').each(function(item) {
                            new Effect.Fade(item);
                        });
                    });                        

                    if($RF($('onestepcheckout-form'), 'payment[method]') != null)    {
                        try    {
                            var payment_method = $RF(form, 'payment[method]');
                            $('container_payment_method_' + payment_method).show();
                            $('payment_form_' + payment_method).show();
                        } catch(err)    {

                        }
                    }
                }
            }
        },
        parameters: parameters
        });
    }
}

/* Terms and conditions Popup Javascript */

function OneStepCheckout_Popup(popup_id, link_id, close_link_search, close_callback, open_callback)
{
    this.popup_id = popup_id;
    this.popup = $(popup_id);
    this.link_id = link_id;
    this.link = $(link_id);
    this.close_link_search = close_link_search;

    if(typeof close_callback != 'undefined') {
        this.close_callback = close_callback;
    }
    else    {
        this.close_callback = false;
    }

    if(typeof open_callback != 'undefined') {
        this.open_callback = open_callback;
    }
    else    {
        this.open_callback = false;
    }  

    var onestepcheckout_popup = this;

    if(this.link != null)    {
        this.link.observe('click', function(e)    {

            e.preventDefault();
            onestepcheckout_popup.show();
        });
    }

    var close_link = $$(this.close_link_search);
    if(close_link.length > 0)    {
        close_link[0].observe('click', function(e)    {
            e.preventDefault();
            onestepcheckout_popup.hide();
        });
    }

    this.overlay = $('onestepcheckout_popup_overlay');

    this.overlay.observe('click', function(e)   {
        onestepcheckout_popup.hide();
    });

}

OneStepCheckout_Popup.prototype.show_overlay = function()
{
    this.overlay.show();

    var dimensions = document.viewport.getDimensions();
    var offset = document.viewport.getScrollOffsets();

    var dimensions_new = {
            height: (dimensions.height + offset.top) + 'px',
            width: (dimensions.width) + 'px'
    }

    this.overlay.setStyle(dimensions_new);

    /* IE Hack */
    var IE6 = Prototype.Browser.IE && parseInt(navigator.userAgent.substring(navigator.userAgent.indexOf('MSIE')+5)) == 6;

    if(IE6)    {
        $$('select').invoke('hide');
    }

}

OneStepCheckout_Popup.prototype.show = function()
{
    this.show_overlay();
    this.popup.show();
    this.center();

    if(this.open_callback) {
        this.open_callback();
    }
}

OneStepCheckout_Popup.prototype.hide = function()
{
    this.overlay.hide();

    /* IE Hack */
    var IE6 = Prototype.Browser.IE && parseInt(navigator.userAgent.substring(navigator.userAgent.indexOf('MSIE')+5)) == 6;

    if(IE6)    {
        $$('select').invoke('show');
    }

    this.popup.hide();

    if(this.close_callback) {
        this.close_callback();
    }
}

OneStepCheckout_Popup.prototype.center = function()
{
    var dimensions = document.viewport.getDimensions();
    var popup_width = this.popup.getWidth();
    var popup_height = this.popup.getHeight();
    var offset = document.viewport.getScrollOffsets();

    var width = dimensions.width;
    var left = (width / 2) - (popup_width / 2);

    var height = dimensions.height;
    var top = (height / 2) - (popup_height / 2) + offset.top;

    this.popup.setStyle({
        top: top + 'px',
        left: left + 'px'
    });
}

var Checkout = Class.create();
    Checkout.prototype = {
        initialize: function(){
        this.accordion = '';
        this.progressUrl = '';
        this.reviewUrl = '';
        this.saveMethodUrl = '';
        this.failureUrl = '';
        this.billingForm = false;
        this.shippingForm= false;
        this.syncBillingShipping = false;
        this.method = '';
        this.payment = '';
        this.loadWaiting = false;
    },
    
    ajaxFailure: function(){
        location.href = this.failureUrl;
    },
    
    setLoadWaiting: function(step, keepDisabled) {
        return true
    }
}

//billing
var Billing = Class.create();
    Billing.prototype = {
            initialize: function(form, addressUrl, saveUrl){
        this.form = form;
    },

    setAddress: function(addressId){
    
    },
    
    newAddress: function(isNew){
        if (isNew) {
            //this.resetSelectedAddress();
            Element.show('billing_address_list');
            if($('billing:use_for_shipping_yes').getValue() != "1" && $('shipping-address-select').getValue() == ''){
                Element.show('shipping_address_list');
            }
    
        } else {
            Element.hide('billing_address_list');
        }
        $$('input[name^=billing]', 'select[id=billing:region_id]').each(function(e){
            if(e.name=='billing[use_for_shipping]' || e.name=='billing[save_in_address_book]'){
                
            } else {
                e.value = '';
            }
        });
    },
    
    resetSelectedAddress: function(){
        var selectElement = $('shipping-address-select')
        if (selectElement) {
            selectElement.value='';
        }
    },
    
    fillForm: function(transport){
    
    },
    
    setUseForShipping: function(flag) {
    
    },
    
    save: function(){
    
    },
    
    resetLoadWaiting: function(transport){
    
    },
    
    nextStep: function(transport){
    
    }
}

//shipping
var Shipping = Class.create();
    Shipping.prototype = {
            initialize: function(form){
        this.form = form;
    },
    
    setAddress: function(addressId){
    
    },
    
    newAddress: function(isNew){
        if (isNew) {
            this.resetSelectedAddress();
            Element.show('shipping_address_list');
        } else {
            Element.hide('shipping_address_list');
        }
        
        $$('#shipping_address input[name^=shipping],#shipping_address select[id=shipping:region_id]').each(function(e){
            if(e.name=='shipping[save_in_address_book]'){
                
            } else {
                e.value = '';
            }
        })
        
    },
    
    resetSelectedAddress: function(){
        var selectElement = $('shipping-address-select')
        if (selectElement) {
            selectElement.value='';
        }
    },
    
    fillForm: function(transport){
    
    },
    
    setSameAsBilling: function(flag) {
    
    },
    
    syncWithBilling: function () {
    
    },
    
    setRegionValue: function(){
        //$('shipping:region').value = $('billing:region').value;
    },
    
    save: function(){
    
    }
}

//payment object
var Payment = Class.create();
    Payment.prototype = {
            beforeInitFunc:$H({}),
            afterInitFunc:$H({}),
            beforeValidateFunc:$H({}),
            afterValidateFunc:$H({}),
            initialize: function(form, saveUrl){
        this.form = form;
        this.saveUrl = saveUrl;
    },
    
    init : function () {
        var elements = Form.getElements(this.form);
        if ($(this.form)) {
            //$(this.form).observe('submit', function(event){this.save();Event.stop(event);}.bind(this));
        }
        var method = null;
        for (var i=0; i<elements.length; i++) {
            if (elements[i].name=='payment[method]') {
                if (elements[i].checked) {
                    method = elements[i].value;
                }
            } else {
                elements[i].disabled = true;
            }
        }
        if (method) this.switchMethod(method);
    },
    
    switchMethod: function(method){
        if (this.currentMethod && $('payment_form_'+this.currentMethod)) {
            var form = $('payment_form_'+this.currentMethod);
            //form.style.display = 'none';
            var elements = form.select('input', 'select', 'textarea');
            for (var i=0; i<elements.length; i++) elements[i].disabled = true;
        }
    
        if ($('payment_form_'+method)){
            var form = $('payment_form_'+method);
            form.style.display = '';
            var elements = form.select('input', 'select', 'textarea');
            for (var i=0; i<elements.length; i++) elements[i].disabled = false;
            this.currentMethod = method;
        }
    },
    
    addBeforeValidateFunction : function(code, func) {
        this.beforeValidateFunc.set(code, func);
    },
    
    beforeValidate : function() {
        var validateResult = true;
        var hasValidation = false;
        (this.beforeValidateFunc).each(function(validate){
            hasValidation = true;
            if ((validate.value)() == false) {
                validateResult = false;
            }
        }.bind(this));
        if (!hasValidation) {
            validateResult = false;
        }
        return validateResult;
    },
    
    validate: function() {
        var methods = document.getElementsByName('payment[method]');
        if (methods.length==0) {
            alert(Translator.translate('Your order can not be completed at this time as there is no payment methods available for it.'));
            return false;
        }
        for (var i=0; i<methods.length; i++) {
            if (methods[i].checked) {
                return true;
            }
        }
        alert(Translator.translate('Please specify payment method.'));
        return false;
    },
    
    save: function(){
    },
    addAfterInitFunction : function(code, func) {
        this.afterInitFunc.set(code, func);
    },
    
    afterInit : function() {
        (this.afterInitFunc).each(function(init){
            (init.value)();
        });
    }
}