Add MediaStreamProtocol enum (#10153)

* Add MediaStreamProtocol enum

* Add default handling for enum during deserialization

---------

Co-authored-by: Cody Robibero <cody@robibe.ro>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/Jellyfin.Extensions/Json/Converters/JsonDefaultStringEnumConverterFactory.cs b/src/Jellyfin.Extensions/Json/Converters/JsonDefaultStringEnumConverterFactory.cs
new file mode 100644
index 000000000..5a9bf546e
--- /dev/null
+++ b/src/Jellyfin.Extensions/Json/Converters/JsonDefaultStringEnumConverterFactory.cs
@@ -0,0 +1,31 @@
+using System;
+using System.ComponentModel;
+using System.Reflection;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Jellyfin.Extensions.Json.Converters;
+
+/// <summary>
+/// Utilizes the JsonStringEnumConverter and sets a default value if not provided.
+/// </summary>
+public class JsonDefaultStringEnumConverterFactory : JsonConverterFactory
+{
+    private static readonly JsonStringEnumConverter _baseConverterFactory = new();
+
+    /// <inheritdoc />
+    public override bool CanConvert(Type typeToConvert)
+    {
+        return _baseConverterFactory.CanConvert(typeToConvert)
+               && typeToConvert.IsDefined(typeof(DefaultValueAttribute));
+    }
+
+    /// <inheritdoc />
+    public override JsonConverter? CreateConverter(Type typeToConvert, JsonSerializerOptions options)
+    {
+        var baseConverter = _baseConverterFactory.CreateConverter(typeToConvert, options);
+        var converterType = typeof(JsonDefaultStringEnumConverter<>).MakeGenericType(typeToConvert);
+
+        return (JsonConverter?)Activator.CreateInstance(converterType, baseConverter);
+    }
+}