var ProductDetails = new Class({

    initialize: function(options) {
        if (!this.initalizeChecks(options)) return;
        this.version = options.version || 1;
        this.priceElementId = options.priceElementId || null;
        this.priceIncludingTaxElementId = options.priceIncludingTaxElementId || null;
        this.salePriceElementId = options.salePriceElementId || null;
        this.salePriceIncludingTaxElementId = options.salePriceIncludingTaxElementId || null;
        this.listPriceElementId = options.listPriceElementId || null;
        this.quickFindCodeElementId = options.quickFindCodeElementId || null;
        this.productCodeElementId = options.productCodeElementId || null;
        this.stockMessageElementId = options.stockMessageElementId || null;
        this.currentStockElementId = options.currentStockElementId || null;
        this.quantityElementId = options.quantityElementId || null;
        this.weightId = options.weightId || 'Weight';
        this.selectElements = options.selectElements;
        this.productId = options.productId;
        this.maximumQuantity = 0;
        this.minimumQuantity = 0;
        this.onCompleted = options.onCompleted || null;
        this.onUpdating = options.onUpdating || null;
        this.onInStock = options.onInStock || null;
        this.onOutOfStock = options.onOutOfStock || null;
        this.onPreorder = options.onPreorder || null;
        this.ajaxUrl = options.ajaxUrl || '/AjaxScripts/ProductItemPrice.aspx';
        this.updatingText = options.updatingText || 'Updating...';

        $(this.selectElements[this.selectElements.length - 1]).addEvent('change', this.updateProductDetails.bind(this));

        for (var element = 0; element < this.selectElements.length; element++) {
            var select = $(this.selectElements[element]);
            select.addEvent('custom', this.updateProductDetails.bind(this));
        }

        if (this.quantityElementId && $(this.quantityElementId) && $(this.quantityElementId).options) {
            $(this.quantityElementId).addEvent('change', this.updateProductDetails.bind(this));
        }
        this.updateProductDetails();
    },

    updateProductDetails: function() {
        if (typeof (this.onUpdating) == 'function') this.onUpdating();
        var priceElement = $(this.priceElementId);
        if (priceElement && this.updatingText && this.updatingText != "") priceElement.innerHTML = this.updatingText;
        var productOptionIds = '';
        for (var element = 0; element < this.selectElements.length; element++) {
            var select = $(this.selectElements[element]);
            var productOptionId = select.options[select.selectedIndex].value;
            if (element > 0) productOptionIds += ",";
            productOptionIds += productOptionId;
        }
        var quantitySelected = 0;

        if (this.quantityElementId) {
            var quantity = $(this.quantityElementId);
            if (quantity) {
                if (quantity.options) {
                    quantitySelected = quantity.options[quantity.selectedIndex].value;
                } else {
                    quantitySelected = quantity.value;
                }
            }
        }
        var myAjax = new Ajax(this.ajaxUrl, { onComplete: this.updatePrice.bind(this), data: "ProductId=" + this.productId + "&Quantity=" + quantitySelected + "&ProductOptionIds=" + productOptionIds, method: 'get' }).request();
    },

    updatePrice: function(response) {
        if (response && response.length > 0) {

            var product = eval('(' + response + ')');
            if (product.trackStock == 'True' && product.currentStock == 0 && product.allowPreorder == 'False') {
                if (typeof (this.onOutOfStock) == 'function') this.onOutOfStock();
            } else if (product.currentStock == 0 && product.allowPreorder == 'True') {
                if (typeof (this.onPreorder) == 'function') this.onPreorder();
            } else {
                if (typeof (this.onInStock) == 'function') this.onInStock();
            }

            if (this.quickFindCodeElementId) {
                var quickFindCodeElement = $(this.quickFindCodeElementId);
                if (quickFindCodeElement && product.quickFindCode) quickFindCodeElement.innerHTML = product.quickFindCode;
            }

            if (this.productCodeElementId) {
                var productCodeElement = $(this.productCodeElementId);
                if (productCodeElement && product.code) productCodeElement.innerHTML = product.code;
            }

            if (this.weightId) {
                var weightElement = $(this.weightId);
                if (weightElement && product.weight) weightElement.innerHTML = product.weight;
            }

            if (this.stockMessageElementId) {
                var stockMessageElement = $(this.stockMessageElementId);
                if (stockMessageElement && product.stockMessage) stockMessageElement.innerHTML = product.stockMessage;
            }

            if (this.currentStockElementId) {
                var currentStockElement = $(this.currentStockElementId);
                if (currentStockElement) currentStockElement.innerHTML = product.currentStock;
            }

            if (this.priceElementId) {
                var priceElement = $(this.priceElementId);
                if (priceElement && product.price) {
                    var price = parseFloat(product.price);
                    if (priceElement.type == 'text') {
                        priceElement.value = price;
                    } else {
                        if (price <= 0)
                            priceElement.innerHTML = 'Please Call for Price';
                        else
                            priceElement.innerHTML = product.currencySymbol + price.toFixed(2);
                    }
                }
            }

            if (this.priceIncludingTaxElementId) {
                var priceElement = $(this.priceIncludingTaxElementId);
                if (priceElement && product.price) {
                    var price = (parseFloat(product.price) + parseFloat(product.tax));
                    if (priceElement.type == 'text') {
                        priceElement.value = price.toFixed(2);
                    } else {
                        if (product.price <= 0)
                            priceElement.innerHTML = 'Please Call for Price';
                        else
                            priceElement.innerHTML = product.currencySymbol + price.toFixed(2);
                    }
                }
            }

            if (this.listPriceElementId) {
                var priceElement = $(this.listPriceElementId);
                if (priceElement && product.listPrice) {
                    var price = parseFloat(product.listPrice);
                    if (priceElement.type == 'text') {
                        priceElement.value = price.toFixed(2);
                    } else {
                        if (product.listPrice <= 0)
                            priceElement.innerHTML = '';
                        else
                            priceElement.innerHTML = product.currencySymbol + price.toFixed(2);
                    }
                }
            }

            if (this.salePriceElementId) {
                var priceElement = $(this.salePriceElementId);
                if (priceElement && product.salePrice) {
                    var price = parseFloat(product.salePrice);
                    if (product.salePrice == 0) {
                        priceElement.style.display = 'none';
                    } else {
                        priceElement.style.display = '';
                        if (priceElement.type == 'text') {
                            priceElement.value = price.toFixed(2);
                        } else {
                            priceElement.innerHTML = product.currencySymbol + price.toFixed(2);
                        }
                    }
                }
            }

            if (this.salePriceIncludingTaxElementId) {
                var priceElement = $(this.salePriceIncludingTaxElementId);
                if (priceElement && product.price) {
                    var price = (parseFloat(product.salePrice) + parseFloat(product.salePriceTax));
                    if (product.salePrice == 0) {
                        priceElement.style.display = 'none';
                    } else {
                        priceElement.style.display = '';
                        if (priceElement.type == 'text') {
                            priceElement.value = price.toFixed(2);
                        } else {
                            priceElement.innerHTML = product.currencySymbol + price.toFixed(2);
                        }
                    }
                }
            }

            if (typeof (this.onCompleted) == 'function') this.onCompleted(product);
        }
    },

    initalizeChecks: function(options) {
        if (!options.priceElementId) {
            alert('No priceElement was supplied in the ProductDetails options.');
            return false;
        }

        if (!options.selectElements) {
            alert('No selectElements were supplied in the ProductDetails options.');
            return false;
        }

        return true;
    }
});