From bcf979917771f8ab9581477ffbc5c9b309665f00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Franti=C5=A1ek=20Boh=C3=A1=C4=8Dek?=
 <fandabohacek@gmail.com>
Date: Thu, 30 Dec 2021 00:28:55 +0100
Subject: [PATCH] feat: add nullable type converter

---
 .../Special/NullableTypeConverter.cs          | 37 +++++++++++++++++++
 .../Extensions/ServiceCollectionExtensions.cs |  1 +
 2 files changed, 38 insertions(+)
 create mode 100644 Core/NosSmooth.Packets/Converters/Special/NullableTypeConverter.cs

diff --git a/Core/NosSmooth.Packets/Converters/Special/NullableTypeConverter.cs b/Core/NosSmooth.Packets/Converters/Special/NullableTypeConverter.cs
new file mode 100644
index 0000000..feb214f
--- /dev/null
+++ b/Core/NosSmooth.Packets/Converters/Special/NullableTypeConverter.cs
@@ -0,0 +1,37 @@
+//
+//  NullableTypeConverter.cs
+//
+//  Copyright (c) František Boháček. All rights reserved.
+//  Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using Remora.Results;
+
+namespace NosSmooth.Packets.Converters.Special;
+
+/// <inheritdoc />
+public class NullableTypeConverter : ISpecialTypeConverter
+{
+    private readonly TypeConverterRepository _typeConverterRepository;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="NullableTypeConverter"/> class.
+    /// </summary>
+    /// <param name="typeConverterRepository">The type converter repository.</param>
+    public NullableTypeConverter(TypeConverterRepository typeConverterRepository)
+    {
+        _typeConverterRepository = typeConverterRepository;
+    }
+
+    /// <inheritdoc />
+    public bool ShouldHandle(Type type)
+        => Nullable.GetUnderlyingType(type) != null;
+
+    /// <inheritdoc />
+    public Result<object?> Deserialize(Type type, PacketStringEnumerator stringEnumerator)
+        => _typeConverterRepository.Deserialize(Nullable.GetUnderlyingType(type)!, stringEnumerator);
+
+    /// <inheritdoc />
+    public Result Serialize(Type type, object? obj, PacketStringBuilder builder)
+        => _typeConverterRepository.Serialize(Nullable.GetUnderlyingType(type)!, obj, builder);
+}
\ No newline at end of file
diff --git a/Core/NosSmooth.Packets/Extensions/ServiceCollectionExtensions.cs b/Core/NosSmooth.Packets/Extensions/ServiceCollectionExtensions.cs
index d40a2b2..00cdf91 100644
--- a/Core/NosSmooth.Packets/Extensions/ServiceCollectionExtensions.cs
+++ b/Core/NosSmooth.Packets/Extensions/ServiceCollectionExtensions.cs
@@ -87,6 +87,7 @@ public static class ServiceCollectionExtensions
     {
         return serviceCollection
             .AddSpecialConverter<ListTypeConverter>()
+            .AddSpecialConverter<NullableTypeConverter>()
             .AddSpecialConverter<EnumTypeConverter>()
             .AddTypeConverter<IntTypeConverter>()
             .AddTypeConverter<UIntTypeConverter>()
-- 
2.49.0