public List<Product> SearcProducts(string fts, string catId, string brandFilterID, string retailerFilterID,
            string priceFilterId, string discountFilterId, string productSetName)
        {
            var query = new ProductQuery();
            if (!string.IsNullOrEmpty(fts))
                query.withFreeText(fts);
            if (!string.IsNullOrEmpty(catId))
                query.withCategory(catId); // Category jackets
            if (!string.IsNullOrEmpty(brandFilterID))
                query.withFilter(brandFilterID); // Brand filter id
            if (!string.IsNullOrEmpty(retailerFilterID))
                query.withFilter(retailerFilterID);// Retailer filter id
            if (!string.IsNullOrEmpty(priceFilterId))
                query.withFilter(priceFilterId); // Price filter id
            if (!string.IsNullOrEmpty(discountFilterId))
                query.withFilter(discountFilterId); // Discount filter id

            var response = api.getProducts(query);
            ProductSearchMetadata metadata = response.getMetadata();
            int total = metadata.getTotal(); // pageCounter = total/limit, these three values are being used to calculate paging.
            int limit = metadata.getLimit();
            int offset = metadata.getOffset();
            int pageCount = (int)Math.Ceiling((double)total / 100);
            var list = new List<Product>();
            for (int i = 0; i < pageCount; i++)
            {
                PageRequest page = new PageRequest().withLimit(100).withOffset(offset);
                var productResponse = api.getProducts(query, page, ProductSort.PriceLoHi);
                list.AddRange(productResponse.getProducts());
            }
            return list;
        }
        public void DownloadProducts(string fts, string catID, string brandFilterID, string retailerFilterID, string priceFilterID, string discountFilterID, string productSetName)
        {
            ProductQuery query = new ProductQuery();
            if (!string.IsNullOrEmpty(fts))
                query.withFreeText(fts);
            if (!string.IsNullOrEmpty(catID))
                query.withCategory(catID); // Category jackets
            if (!string.IsNullOrEmpty(brandFilterID))
                query.withFilter(brandFilterID); // Brand filter id
            if (!string.IsNullOrEmpty(retailerFilterID))
                query.withFilter(retailerFilterID);// Retailer filter id
            if (!string.IsNullOrEmpty(priceFilterID))
                query.withFilter(priceFilterID); // Price filter id
            if (!string.IsNullOrEmpty(discountFilterID))
                query.withFilter(discountFilterID); // Discount filter id

            var response = api.getProducts(query);

            ProductSearchMetadata metadata = response.getMetadata();
            int total = metadata.getTotal(); // pageCounter = total/limit, these three values are being used to calculate paging.
            int limit = metadata.getLimit();
            int offset = metadata.getOffset();
            int pageCount = (int)Math.Ceiling((double)total / 100);

            System.Guid productSetID;

            using (CatalogDataContext context = new CatalogDataContext())
            {
                var ps = (from set in context.SS_Product_Sets where set.product_set_name == productSetName select set).SingleOrDefault();
                if (ps == null)
                {
                    SS_Product_Set productSet = new SS_Product_Set()
                    {
                        id = System.Guid.NewGuid(),
                        product_set_name = productSetName,
                        tb_seller_cid = ProductService.AddSellerCat(productSetName).Cid,
                        datetimecreated = (DateTime?)DateTime.Now
                    };

                    context.SS_Product_Sets.InsertOnSubmit(productSet);
                    context.SubmitChanges();
                    productSetID = productSet.id;
                }
                else
                    productSetID = ps.id;

            }

            for (int i = 0; i < pageCount; i++)
            {
                PageRequest page = new PageRequest().withLimit(100).withOffset(offset);
                var productResponse = api.getProducts(query, page, ProductSort.PriceLoHi);

                foreach (var product in productResponse.getProducts())
                {
                    try
                    {
                         using (CatalogDataContext dc = new CatalogDataContext())
                    {
                        if (dc.SS_Products.FirstOrDefault(x => x.product_id == product.getId()) != null)
                        {
                            continue;
                        }
                    }

                    using (CatalogDataContext dc = new CatalogDataContext())
                    {

                        SS_Product ssProduct = new SS_Product()
                        {
                            id = System.Guid.NewGuid(),
                            brand_id = (int?)product.getBrand().getId(),
                            click_url = product.getClickUrl(),
                            currency = product.getCurrency().getCurrencyCode(),
                            description = product.getDescription(),
                            chinese_description = getTranslateResult(stripOffHTMLTags(product.getDescription()), true) ?? string.Empty,
                            image_id = product.getImage().getId(),
                            in_stock = product.isInStock(),
                            locale = product.getLocale().getDisplayCountry(),
                            name = product.getName(),
                            chinese_name = product.getBrand().getName() + getTranslateResult(product.getName(), false) ?? string.Empty,
                            price = (decimal?)product.getPrice(),
                            price_label = product.getPriceLabel(),
                            retailer_id = (int?)product.getRetailer().getId(),
                            product_id = (int)product.getId(),
                            sale_price = (decimal?)product.getSalePrice() == 0 ? null : (decimal?)product.getSalePrice(),
                            sale_price_label = product.getSalePriceLabel(),
                            istranslated = false,
                            keyword = fts,
                            datetimecreated = DateTime.Now,
                            product_set_name_id = productSetID
                        };
                        dc.SS_Products.InsertOnSubmit(ssProduct);
                        dc.SubmitChanges();

                    }

                    using (CatalogDataContext dc = new CatalogDataContext())
                    {
                        SS_Product ssProduct = dc.SS_Products.FirstOrDefault(x => x.product_id == product.getId());

                        //Insert categories and product-category mapping records
                        if (!string.IsNullOrEmpty(catID))
                        {
                            SS_Product_Category_Mapping pcMapping = new SS_Product_Category_Mapping() { id = System.Guid.NewGuid(), product_id = ssProduct.product_id, cat_id = catID };
                            dc.SS_Product_Category_Mappings.InsertOnSubmit(pcMapping);
                            dc.SubmitChanges();
                        }
                        else
                        {
                            foreach (var category in product.getCategories())
                            {
                                if (ssProduct != null)
                                {
                                    SS_Product_Category_Mapping pcMapping = new SS_Product_Category_Mapping() { id = System.Guid.NewGuid(), product_id = ssProduct.product_id, cat_id = category.getId() };
                                    dc.SS_Product_Category_Mappings.InsertOnSubmit(pcMapping);
                                    dc.SubmitChanges();
                                }
                                else
                                {
                                    throw new ArgumentNullException("Could not find the newly inserted product");
                                }
                            }
                        }
                    }

                    //insert main image
                    foreach (ImageSize imageSize in product.getImage().getSizes().values().toArray())
                    {
                        using (CatalogDataContext dc1 = new CatalogDataContext())
                        {
                            SS_Product ssProduct = dc1.SS_Products.FirstOrDefault(x => x.product_id == product.getId());

                            SS_Image image = new SS_Image()
                            {
                                id = System.Guid.NewGuid(),
                                size_name = imageSize.getSizeName().toString(),
                                image_id = ssProduct.image_id,
                                url = imageSize.getUrl(),
                                height = imageSize.getHeight(),
                                width = imageSize.getWidth()
                            };
                            dc1.SS_Images.InsertOnSubmit(image);
                            dc1.SubmitChanges();

                        }
                    }

                    //Isert product_color_image_mapping records
                    foreach (var color in product.getColors())
                    {
                        using (CatalogDataContext dc = new CatalogDataContext())
                        {

                            SS_Product ssProduct = dc.SS_Products.FirstOrDefault(x => x.product_id == product.getId());

                            SS_Product_Color_Image_Mapping pciMapping = new SS_Product_Color_Image_Mapping();
                            pciMapping.id = System.Guid.NewGuid();
                            pciMapping.color_name = color.getName();
                            pciMapping.product_id = (int)product.getId();

                            if (color.getImage() == null)
                            {
                                pciMapping.image_id = ssProduct.image_id;//if there's no image element inside color element, that means only one color available.
                            }
                            else
                            {
                                pciMapping.image_id = color.getImage().getId();
                            }

                            if (color.getImage() != null)
                            {
                                var ssImage = (from image in dc.SS_Images where image.image_id == color.getImage().getId() select image).FirstOrDefault();

                                if (ssImage == null)
                                {
                                    foreach (ImageSize imageSize in color.getImage().getSizes().values().toArray())
                                    {
                                        using (CatalogDataContext dc1 = new CatalogDataContext())
                                        {

                                            SS_Image image = new SS_Image()
                                            {
                                                id = System.Guid.NewGuid(),
                                                size_name = imageSize.getSizeName().toString(),
                                                image_id = pciMapping.image_id,
                                                url = imageSize.getUrl(),
                                                height = imageSize.getHeight(),
                                                width = imageSize.getWidth()
                                            };
                                            dc1.SS_Images.InsertOnSubmit(image);
                                            dc1.SubmitChanges();

                                        }
                                    }
                                }
                            }

                            dc.SS_Product_Color_Image_Mappings.InsertOnSubmit(pciMapping);
                            dc.SubmitChanges();
                        }

                    }

                    //Insert size and product_size_mapping
                    foreach (var size in product.getSizes())
                    {
                        using (CatalogDataContext dc = new CatalogDataContext())
                        {
                            SS_Size result = dc.SS_Sizes.FirstOrDefault(x => x.name == size.getName());

                            if (result == null)
                            {
                                System.Guid sizeId;
                                using (CatalogDataContext dc1 = new CatalogDataContext())
                                {
                                    SS_Size s = new SS_Size() { id = System.Guid.NewGuid(), name = size.getName() };
                                    dc1.SS_Sizes.InsertOnSubmit(s);
                                    dc1.SubmitChanges();

                                    sizeId = s.id;
                                }

                                using (CatalogDataContext dc2 = new CatalogDataContext())
                                {
                                    SS_Product_Size_Mapping psMapping = new SS_Product_Size_Mapping() { id = System.Guid.NewGuid(), product_id = (int)product.getId(), size_id = sizeId };
                                    dc2.SS_Product_Size_Mappings.InsertOnSubmit(psMapping);
                                    dc2.SubmitChanges();
                                }

                            }
                            else
                            {
                                SS_Product_Size_Mapping psMapping = new SS_Product_Size_Mapping() { id = System.Guid.NewGuid(), product_id = (int)product.getId(), size_id = result.id };
                                dc.SS_Product_Size_Mappings.InsertOnSubmit(psMapping);
                                dc.SubmitChanges();
                            }
                        }
                    }
                    }
                    catch (Exception)
                    {
                        continue;
                    }
                }
                offset += 100;
            }
        }