From 222c235d6b4b1d8fbca9804dd35c8e5b56d43e8a Mon Sep 17 00:00:00 2001
From: eugene-hong <58686228+eugene-doobu@users.noreply.github.com>
Date: Mon, 4 Nov 2024 21:07:50 +0900
Subject: [PATCH 1/3] add currency formatter

---
 .../Formatters/CurrencyFormatter.cs           | 42 +++++++++++++++++++
 ...ineChroniclesResolverGetFormatterHelper.cs |  4 +-
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 Lib9c.MessagePack/Formatters/CurrencyFormatter.cs

diff --git a/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs b/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs
new file mode 100644
index 0000000000..d0815927fc
--- /dev/null
+++ b/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs
@@ -0,0 +1,42 @@
+using System;
+using System.Buffers;
+using MessagePack;
+using Libplanet.Types.Assets;
+using MessagePack.Formatters;
+using Bencodex;
+
+namespace Lib9c.Formatters
+{
+    public class CurrencyFormatter : IMessagePackFormatter<Currency>
+    {
+        public void Serialize(ref MessagePackWriter writer, Currency value, MessagePackSerializerOptions options)
+        {
+            if (value.Equals(default))
+            {
+                writer.WriteNil();
+                return;
+            }
+            
+            writer.Write(new Codec().Encode(value.Serialize()));
+        }
+
+        public Currency Deserialize(ref MessagePackReader reader, MessagePackSerializerOptions options)
+        {
+            if (reader.TryReadNil())
+            {
+                return default;
+            }
+
+            options.Security.DepthStep(ref reader);
+
+            var bytes = reader.ReadBytes()?.ToArray();
+            if (bytes is null)
+            {
+                throw new InvalidOperationException();
+            }
+
+            var currency = new Currency(new Codec().Decode(bytes));
+            return new Currency(new Codec().Decode(bytes));
+        }
+    }
+}
diff --git a/Lib9c.MessagePack/Formatters/NineChroniclesResolverGetFormatterHelper.cs b/Lib9c.MessagePack/Formatters/NineChroniclesResolverGetFormatterHelper.cs
index c4ae026642..be300fa8b4 100644
--- a/Lib9c.MessagePack/Formatters/NineChroniclesResolverGetFormatterHelper.cs
+++ b/Lib9c.MessagePack/Formatters/NineChroniclesResolverGetFormatterHelper.cs
@@ -5,6 +5,7 @@
 using Libplanet.Types.Assets;
 using MessagePack.Formatters;
 using Nekoyume.Action;
+using Nekoyume.Model.State;
 
 namespace Lib9c.Formatters
 {
@@ -19,7 +20,8 @@ public static class NineChroniclesResolverGetFormatterHelper
             {typeof(PublicKey), new PublicKeyFormatter()},
             {typeof(Dictionary), new BencodexFormatter<Dictionary>()},
             {typeof(IValue), new BencodexFormatter<IValue>()},
-            {typeof(ActionBase), new NCActionFormatter()}
+            {typeof(ActionBase), new NCActionFormatter()},
+            {typeof(Currency), new CurrencyFormatter()},
             // add more your own custom serializers.
         };
 

From 7e2664eb02b6d5854d79fee708e75015458f32ae Mon Sep 17 00:00:00 2001
From: eugene-hong <58686228+eugene-doobu@users.noreply.github.com>
Date: Mon, 4 Nov 2024 21:07:59 +0900
Subject: [PATCH 2/3] fix InvalidSignatureException

---
 Lib9c/Action/InvalidSignatureException.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib9c/Action/InvalidSignatureException.cs b/Lib9c/Action/InvalidSignatureException.cs
index 5bdabd57be..d44f5bf9e2 100644
--- a/Lib9c/Action/InvalidSignatureException.cs
+++ b/Lib9c/Action/InvalidSignatureException.cs
@@ -34,7 +34,8 @@ StreamingContext context
         )
         {
             base.GetObjectData(info, context);
-            info.AddValue(nameof(Pending), new Codec().Encode(Pending.Serialize()));
+            var pendingData = Pending is null ? null : new Codec().Encode(Pending.Serialize());
+            info.AddValue(nameof(Pending), pendingData);
             info.AddValue(nameof(Signature), Signature);
         }
     }

From 64248f23b26e74d7904d92572653637fe03ff2bf Mon Sep 17 00:00:00 2001
From: eugene-hong <58686228+eugene-doobu@users.noreply.github.com>
Date: Tue, 5 Nov 2024 10:25:14 +0900
Subject: [PATCH 3/3] remove redundant line

---
 Lib9c.MessagePack/Formatters/CurrencyFormatter.cs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs b/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs
index d0815927fc..0a090da5f7 100644
--- a/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs
+++ b/Lib9c.MessagePack/Formatters/CurrencyFormatter.cs
@@ -35,7 +35,6 @@ public Currency Deserialize(ref MessagePackReader reader, MessagePackSerializerO
                 throw new InvalidOperationException();
             }
 
-            var currency = new Currency(new Codec().Decode(bytes));
             return new Currency(new Codec().Decode(bytes));
         }
     }