From 90ad59c63aaefe96c43eedfecfde00e793ef32e9 Mon Sep 17 00:00:00 2001
From: Jkorf <jankorf91@gmail.com>
Date: Fri, 22 Nov 2024 16:20:09 +0100
Subject: [PATCH] Added comma split enum string json converter

---
 .../SystemTextJson/CommaSplitEnumConverter.cs | 27 +++++++++++++++++++
 .../Comparers/SystemTextJsonComparer.cs       |  3 +++
 2 files changed, 30 insertions(+)
 create mode 100644 CryptoExchange.Net/Converters/SystemTextJson/CommaSplitEnumConverter.cs

diff --git a/CryptoExchange.Net/Converters/SystemTextJson/CommaSplitEnumConverter.cs b/CryptoExchange.Net/Converters/SystemTextJson/CommaSplitEnumConverter.cs
new file mode 100644
index 0000000..f74af7a
--- /dev/null
+++ b/CryptoExchange.Net/Converters/SystemTextJson/CommaSplitEnumConverter.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace CryptoExchange.Net.Converters.SystemTextJson
+{
+    /// <summary>
+    /// Converter for comma seperated enum values
+    /// </summary>
+    public class CommaSplitEnumConverter<T> : JsonConverter<IEnumerable<T>> where T : Enum
+    {
+        /// <inheritdoc />
+        public override IEnumerable<T>? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            return (reader.GetString()?.Split(',').Select(x => EnumConverter.ParseString<T>(x)).ToArray() ?? new T[0])!;
+        }
+
+        /// <inheritdoc />
+        public override void Write(Utf8JsonWriter writer, IEnumerable<T> value, JsonSerializerOptions options)
+        {
+            writer.WriteStringValue(string.Join(",", value.Select(x => EnumConverter.GetString(x))));
+        }
+    }
+}
diff --git a/CryptoExchange.Net/Testing/Comparers/SystemTextJsonComparer.cs b/CryptoExchange.Net/Testing/Comparers/SystemTextJsonComparer.cs
index 12c603c..7c44f4e 100644
--- a/CryptoExchange.Net/Testing/Comparers/SystemTextJsonComparer.cs
+++ b/CryptoExchange.Net/Testing/Comparers/SystemTextJsonComparer.cs
@@ -224,6 +224,9 @@ namespace CryptoExchange.Net.Testing.Comparers
             else if (propertyValue.GetType().GetInterfaces().Contains(typeof(IEnumerable))
                 && propertyValue.GetType() != typeof(string))
             {
+                if (propValue.Type != JTokenType.Array)
+                    return;
+
                 var jObjs = (JArray)propValue;
                 var list = (IEnumerable)propertyValue;
                 var enumerator = list.GetEnumerator();