Bugfix converting Enums to Integer

Author: Florian Weihmann

Source/FikaAmazonAPI.SampleCode/ListingstemsSample.cs

@@ -0,0 +1,39 @@
+using FikaAmazonAPI.Parameter.ListingItem;
+using FikaAmazonAPI.Utils;
+
+namespace FikaAmazonAPI.SampleCode
+{
+    public class ListingsItemsSample
+    {
+        private readonly AmazonConnection amazonConnection;
+        public ListingsItemsSample(AmazonConnection amazonConnection)
+        {
+            this.amazonConnection = amazonConnection;
+        }
+
+        public async Task SetListingsItemAttribute(string sellerId)
+        {
+            var sku = "MP-23Q3W00058-Q898-03";
+            var marketPlace = MarketPlace.Germany;
+
+            PatchOperation[] patches = new PatchOperation[1];
+
+            patches[0] = new PatchOperation()
+            {
+                op = Op.replace,
+                path = "/attributes/gpsr_safety_attestation",
+                value = new object[] { true }
+            };
+
+            ParameterPatchListingItem parameter = new()
+            {
+                listingsItemPatchRequest = new ListingsItemPatchRequest() { patches = patches, productType = "BRA" },
+                sellerId = sellerId,
+                sku = sku,
+                marketplaceIds = new string[] { marketPlace.ID }
+            };
+
+            await amazonConnection.ListingsItem.PatchListingsItemAsync(parameter);
+        }
+    }
+}

Source/FikaAmazonAPI/Parameter/ParameterBased.cs

@@ -1,6 +1,7 @@
 using FikaAmazonAPI.Parameter;
 using FikaAmazonAPI.Utils;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using System;
 using System.Collections;
 using System.Collections.Generic;
@@ -67,7 +68,12 @@ public virtual List<KeyValuePair<string, string>> getParameters()
                     }
                     else
                     {
-                        output = JsonConvert.SerializeObject(value);
+                        var settings = new JsonSerializerSettings()
+                        {
+                            Converters = new List<JsonConverter>() { new StringEnumConverter() }
+                        };
+
+                        output = JsonConvert.SerializeObject(value, settings);
                     }