Update OrderSynchronizer paramters to make better sense with OrderItem ID

Author: Ecarrion

WooCommerce/Classes/ViewRelated/Orders/Order Creation/Synchronizer/LocalOrderSynchronizer.swift

@@ -131,23 +131,22 @@ private struct ProductInputTransformer {
     /// Creates and order item by using the `input.id` as the `item.itemID`.
     ///
     private static func createOrderItem(using input: OrderSyncProductInput) -> OrderItem {
-        let quantity = Decimal(input.quantity)
         let parameters: OrderItemParameters = {
             switch input.product {
             case .product(let product):
                 let price = Decimal(string: product.price) ?? .zero
-                return OrderItemParameters(quantity: quantity, price: price, productID: product.productID, variationID: nil)
+                return OrderItemParameters(quantity: input.quantity, price: price, productID: product.productID, variationID: nil)
             case .variation(let variation):
                 let price = Decimal(string: variation.price) ?? .zero
-                return OrderItemParameters(quantity: quantity, price: price, productID: variation.productID, variationID: variation.productVariationID)
+                return OrderItemParameters(quantity: input.quantity, price: price, productID: variation.productID, variationID: variation.productVariationID)
             }
         }()
 
         return OrderItem(itemID: Int64(input.id.hashValue),
                          name: "",
                          productID: parameters.productID,
                          variationID: parameters.variationID ?? 0,
-                         quantity: quantity,
+                         quantity: parameters.quantity,
                          price: parameters.price as NSDecimalNumber,
                          sku: nil,
                          subtotal: parameters.subtotal,

WooCommerce/Classes/ViewRelated/Orders/Order Creation/Synchronizer/OrderSynchronizer.swift

@@ -19,9 +19,9 @@ struct OrderSyncProductInput {
         case product(Product)
         case variation(ProductVariation)
     }
-    let id = UUID().uuidString
+    var id = Int64(UUID().uuidString.hashValue)
     let product: ProductType
-    let quantity: Int
+    let quantity: Decimal
 }
 
 /// Addresses input for an `OrderSynchronizer` type.