/* ==========================================================================
 Navigation handler
 ========================================================================== */

/**
 * Main navigation
 */
var Product = {

    // Initialize click event
    init: function () {
        $('body.categories .order-box .increase').bind('click', function (ev) {
            Product.updateProductValue(1);
            ev.preventDefault();
            return false;
        });
        $('body.categories .order-box .decrease').bind('click', function (ev) {
            Product.updateProductValue(-1);
            ev.preventDefault();
            return false;
        });

        $('body.categories .order-box .amount-box .amount').bind('change', function (ev) {
            Product.updateProductValue(0);
            return false;
        });
    },

    updateProductValue: function (update) {
        var normalPrice = parseFloat($('body.categories .product-right .right .price').html().replace(/,/, '.'));

        var el = $('body.categories .order-box .amount');
        var amount = parseInt(el.val());

        if (amount == '' || isNaN(amount) || amount <= 0) {
            amount = 1;
        }

        if (amount + update > 0) {
            amount += update;
            el.val(amount);
        }

        var priceElement = $('body.categories .product-right .left .price');
        var newPrice = normalPrice * amount;
        var oldPrice = normalPrice * amount;

        if ($('body.categories .product-right .right span.staffel_price').length > 0) {
            var staffelpriceElement = $('body.categories .product-right .left .staffeldiscount-price');
            var staffelPrice = parseFloat($('body.categories .product-right .right span.staffel_price').html().replace(/,/, '.'));
            var staffelAmount = parseFloat($('body.categories .product-right .right .staffel').html());
            if (amount >= staffelAmount) {
                $('body.categories .product-right').addClass('staffel');
                $('body.categories .product-right .no-staffeldiscount-message').hide();
                $('body.categories .product-right .staffeldiscount-message').show();
                $('body.categories .product-right .staffeldiscount-price').show();
                newPrice = staffelPrice * amount;
                staffelpriceElement.html('&euro;' + parseFloat(oldPrice).toFixed(2));
            } else {
                $('body.categories .product-right').removeClass('staffel');
                $('body.categories .product-right .no-staffeldiscount-message').show();
                $('body.categories .product-right .staffeldiscount-message').hide();
                $('body.categories .product-right .staffeldiscount-price').hide();
            }
        }
        var newEuro = Math.floor(newPrice);
        var newCents = Math.round(newPrice % 1 * 100);
        priceElement.html('&euro; ' + newEuro + '<span>' + (newCents < 10 ? '0' + newCents : newCents) + '</span>');
    }
};

Product.init();