private static CustomerXmlRecord GetCustomerTreeNode(XElement parent, XElement node, IEnumerable <XElement> customers)
        {
            var curNode = new CustomerXmlRecord
            {
                Node = node,
                BackendRelationID = Convert.ToInt32(node.Attribute("BackendRelationID").Value),
                AddressType       = node.Element("AddressInformation").Element("AddressType").Value
            };

            curNode.Children = (from child in customers
                                where child.Attribute("ParentBackendRelationID").Value == node.Attribute("BackendRelationID").Value
                                select GetCustomerTreeNode(node, child, customers)
                                ).ToList();

            curNode.Parent = (from p in customers
                              where p.Attribute("BackendRelationID").Value == node.Attribute("ParentBackendRelationID").Value
                              select new CustomerXmlRecord
            {
                Node = p,
                BackendRelationID = Convert.ToInt32(p.Attribute("BackendRelationID").Value),
                AddressType = p.Element("AddressInformation").Element("AddressType").Value
            }

                              ).FirstOrDefault();


            return(curNode);
        }
        private XElement GetBillToAddress(CustomerXmlRecord record)
        {
            var parent = record.Parent;

            while (parent != null)
            {
                if (parent.Parent == null)
                {
                    break;
                }

                parent = parent.Parent;
            }


            return(parent.Node);
        }
        private void ProcessCustomerNode(List <string> emailAddressCodes, SortedDictionary <string, eav_attribute> attributeList, SortedDictionary <string, eav_attribute> addressAttributeList,
                                         Dictionary <int, customer_entity> existingCustomers, HashSet <string> existingEmailAddresses, CustomerHelper helper, CustomerXmlRecord record)
        {
            var customer = record.Node;

            int backendRelationId       = Convert.ToInt32(customer.Attribute("BackendRelationID").Value);
            int parentBackendRelationId = 0;

            if (record.Parent != null)
            {
                parentBackendRelationId = Convert.ToInt32(record.Parent.Node.Attribute("BackendRelationID").Value);
            }

            customer_entity entity = null;

            bool prefixEmailRecords = false;


            var electronicAddressesNode = customer.Element("Addresses").Elements("Address").Where(x => x.Element("ElectronicAddressType") != null &&
                                                                                                  emailAddressCodes.Contains(x.Element("ElectronicAddressType").Value)
                                                                                                  );

            //filter bas addresses
            electronicAddressesNode = electronicAddressesNode.Where(x =>
                                                                    !x.Element("ElectronicAddress").Value.Contains("basdistributie.") &&
                                                                    !x.Element("ElectronicAddress").Value.Contains("basdistribution.") &&
                                                                    !x.Element("ElectronicAddress").Value.Contains("basgroup."));



            if (electronicAddressesNode.Count() == 0)
            {
                if (parentBackendRelationId > 0)
                {
                    var parent = GetBillToAddress(record);
                    electronicAddressesNode = parent.Element("Addresses").Elements("Address").Where(x => x.Element("ElectronicAddressType") != null &&
                                                                                                    emailAddressCodes.Contains(x.Element("ElectronicAddressType").Value));

                    //filter bas addresses
                    electronicAddressesNode = electronicAddressesNode.Where(x =>
                                                                            !x.Element("ElectronicAddress").Value.Contains("basdistributie.") &&
                                                                            !x.Element("ElectronicAddress").Value.Contains("basdistribution.") &&
                                                                            !x.Element("ElectronicAddress").Value.Contains("basgroup."));

                    prefixEmailRecords = true;
                }

                if (electronicAddressesNode.Count() == 0)
                {
                    Logger.WarnFormat("Ignoring customer {0}, because no email address exists", backendRelationId);
                    return;
                }
            }


            string mainEmailAddress = electronicAddressesNode
                                      .OrderBy(e => emailAddressCodes.IndexOf(e.Element("ElectronicAddressType").Value)).FirstOrDefault().Try(x => x.Element("ElectronicAddress").Value, null);


            if (String.IsNullOrEmpty(mainEmailAddress))
            {
                if (parentBackendRelationId == 0)
                {
                    Logger.WarnFormat("Ignoring customer {0}, because primary email address is empty", backendRelationId);
                    return;
                }
                else
                {
                    // get parents address
                }
            }

            string financialEmailAddress = electronicAddressesNode.FirstOrDefault(x => x.Element("ElectronicAddressType").Value == "F").Try(x => x.Element("ElectronicAddress").Value, null);

            if (prefixEmailRecords)
            {
                mainEmailAddress      = String.Format("{0}_{1}", backendRelationId, mainEmailAddress);
                financialEmailAddress = String.Format("{0}_{1}", backendRelationId, financialEmailAddress);
            }


            if (!existingCustomers.TryGetValue(backendRelationId, out entity))
            {
                if (existingEmailAddresses.Contains(mainEmailAddress))
                {
                    Logger.WarnFormat("Ignoring customer {0}, because email address {1} is already exists", backendRelationId, mainEmailAddress);
                    return;
                }


                //create new
                entity = new customer_entity()
                {
                    entity_id        = backendRelationId,
                    entity_type_id   = CUSTOMER_ENTITY_TYPE_ID,
                    attribute_set_id = 0,
                    website_id       = 1,
                    group_id         = 1,
                    store_id         = 1,
                    created_at       = DateTime.Now,
                    updated_at       = DateTime.Now,
                    is_active        = true,
                    increment_id     = "",
                    email            = mainEmailAddress
                };

                helper.AddCustomer(entity);
            }
            else
            {
                if (mainEmailAddress != entity.email)
                {
                    Logger.WarnFormat("Cannot change email (for now), relation : {0}", backendRelationId);
                    return;
                }
            }


            #region Password

            string password = HttpUtility.HtmlDecode(customer.Element("Password").Value.Trim());
            var    hasher   = System.Security.Cryptography.MD5.Create();

            var bytes = hasher.ComputeHash(System.Text.Encoding.Default.GetBytes(password));

            StringBuilder sBuilder = new StringBuilder();

            // Loop through each byte of the hashed data
            // and format each one as a hexadecimal string.
            for (int i = 0; i < bytes.Length; i++)
            {
                sBuilder.Append(bytes[i].ToString("x2"));
            }

            // Return the hexadecimal string.
            helper.SyncAttributeValue(attributeList["password_hash"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, sBuilder.ToString());
            #endregion

            #region Entity Attributes


            helper.SyncAttributeValue(attributeList["company_name"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, customer.Element("Name").Value);

            helper.SyncAttributeValue(attributeList["firstname"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, "-");
            helper.SyncAttributeValue(attributeList["lastname"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, "-");

            helper.SyncAttributeValue(attributeList["account_number"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, backendRelationId, type: "int");

            helper.SyncAttributeValue(attributeList["created_in"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, "JD Edwards");


            string taxNumber = customer.Element("TaxNumber").Try(x => x.Value.Trim(), string.Empty);

            helper.SyncAttributeValue(attributeList["taxvat"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, taxNumber, type: "varchar");

            var accountManagerNode = customer.Element("AccountManager");

            string accountManagerName = String.Empty;

            if (accountManagerNode != null)
            {
                accountManagerName = accountManagerNode.Element("Name").Value;
            }


            helper.SyncAttributeValue(attributeList["account_manager_name"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, accountManagerName);

            #region Financial Attributes
            string  paymentInstrument = customer.Element("PaymentInstrument").Try(x => x.Value, string.Empty);
            string  paymentDays       = customer.Element("PaymentDays").Try(x => x.Value, string.Empty);
            string  routeCode         = customer.Element("RouteCode").Try(x => x.Value, string.Empty);
            decimal invoiceAmount     = customer.Element("InvoiceAmount").Try(x => Convert.ToDecimal(x.Value), 0);
            decimal invoiceAmountOpen = customer.Element("OpenInvoiceAmount").Try(x => Convert.ToDecimal(x.Value), 0);
            decimal creditLimit       = customer.Element("CreditLimit").Try(x => Convert.ToDecimal(x.Value), 0);

            helper.SyncAttributeValue(attributeList["payment_instrument"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, paymentInstrument, type: "varchar");
            helper.SyncAttributeValue(attributeList["payment_days"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, paymentDays, type: "varchar");

            helper.SyncAttributeValue(attributeList["credit_limit"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, creditLimit, type: "decimal");
            helper.SyncAttributeValue(attributeList["invoice_amount"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, invoiceAmount, type: "decimal");
            helper.SyncAttributeValue(attributeList["invoice_amount_open"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, invoiceAmountOpen, type: "decimal");

            helper.SyncAttributeValue(attributeList["route_code"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, routeCode, type: "varchar");

            #endregion

            #region Logistic Attributes

            int    defaultCarrierId   = customer.Element("DefaultCarrier").Try(x => Convert.ToInt32(x.Value), 0);
            string defaultCarrierName = customer.Element("DefaultCarrierName").Try(x => x.Value, string.Empty);

            helper.SyncAttributeValue(attributeList["default_carrier"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, defaultCarrierId, type: "int");
            helper.SyncAttributeValue(attributeList["default_carrier_name"].attribute_id, CUSTOMER_ENTITY_TYPE_ID, StoreList[CurrentStoreCode].store_id, backendRelationId, defaultCarrierName, type: "varchar");

            #endregion


            #endregion

            #region Addresses

            customer_address_entity addressEntity = SyncEntityAddress(addressAttributeList, helper, customer, entity, entity.entity_id);

            if (record.Children.Count() == 0) // no children, so default shipping remains here
            {
                helper.SyncAttributeValue(attributeList["default_shipping"].attribute_id, entity.entity_type_id, StoreList[CurrentStoreCode].store_id, entity.entity_id, addressEntity.entity_id, "int");
            }

            if (record.Parent == null)
            {
                //top level
                helper.SyncAttributeValue(attributeList["default_billing"].attribute_id, entity.entity_type_id, StoreList[CurrentStoreCode].store_id, entity.entity_id, addressEntity.entity_id, "int");
            }
            else
            {
                var billToAddress = GetBillToAddress(record);
                customer_address_entity billTo = SyncEntityAddress(addressAttributeList, helper, billToAddress,
                                                                   entity, address_line_id: Convert.ToInt32(billToAddress.Attribute("BackendRelationID").Value));

                helper.SyncAttributeValue(attributeList["default_billing"].attribute_id, entity.entity_type_id, StoreList[CurrentStoreCode].store_id, entity.entity_id, billTo.entity_id, "int");
            }

            if (record.Children.Count() > 0)
            {
                var shipToAddresses = GetChildAddresses(record.Children);

                foreach (var address in shipToAddresses)
                {
                    customer_address_entity childAddress = SyncEntityAddress(addressAttributeList, helper, address, entity, address_line_id: Convert.ToInt32(address.Attribute("BackendRelationID").Value));
                }
            }

            #endregion
        }