Initial commit carried over from private repo. This is V2.

code/MessengerApi.Contracts.MessageParser/IMessageParser.cs

@@ -0,0 +1,22 @@
+namespace MessengerApi.Contracts.MessageParser
+{
+    /// <summary>
+    /// A tool that helps converting POCO request/response models into <see cref="InboxMessage"/>, <see cref="OutboxMessage"/> and back.
+    /// </summary>
+    /// <remarks>
+    /// If you implement this, it's gonna be a lot easier for you to translate 
+    /// dumb request class into <see cref="OutboxMessage"/>, then convert 
+    /// <see cref="InboxMessage"/> back to request at server-side, and do the
+    /// same with the response all the way down to the client.
+    /// </remarks>
+    public interface IMessageParser<TRequest, TResponse>
+    {
+        OutboxMessage GetMessageFromRequest(TRequest request, int targetUserId);
+
+        TRequest GetRequestFromMessage(InboxMessage message);
+
+        OutboxMessage GetMessageFromResponse(TResponse response, string apiKey, int targetUserId, InboxMessage requestOrigin = null);
+
+        TResponse GetResponseFromMessage(InboxMessage message);
+    }
+}

code/MessengerApi.Contracts.MessageParser/MessageParser.cs

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+using Newtonsoft.Json;
+
+namespace MessengerApi.Contracts.MessageParser
+{
+    public class MessageParser<TRequest, TResponse> : IMessageParser<TRequest, TResponse>
+    {
+        public OutboxMessage GetMessageFromRequest(
+            TRequest request, 
+            int targetUserId)
+        {
+            var message = new OutboxMessage
+            {
+                
+            }
+                apikey,
+                targetUserId,
+                typeof(TRequest).Name,
+                JsonConvert.SerializeObject(request));
+
+            return message;
+        }
+
+        public OutboxMessage GetMessageFromResponse(
+            TResponse response, 
+            string apiKey, 
+            int targetUserId, 
+            InboxMessage requestOrigin = null)
+        {
+            var message = new OutboxMessage(
+                apiKey,
+                targetUserId,
+                requestOrigin.PayloadType,
+                JsonConvert.SerializeObject(response));
+
+            return message;
+        }
+
+        public TRequest GetRequestFromMessage(InboxMessage message)
+        {
+            var request = JsonConvert.DeserializeObject<TRequest>(message.Payload);
+            return request;
+        }
+
+        public TResponse GetResponseFromMessage(InboxMessage message)
+        {
+            var request = JsonConvert.DeserializeObject<TResponse>(message.Payload);
+            return request;
+        }
+    }
+}

code/MessengerApi.Contracts.MessageParser/MessengerApi.Contracts.MessageParser.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFramework>net9.0</TargetFramework>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>disable</Nullable>
+		<AssemblyVersion>$([System.DateTime]::UtcNow.ToString("yyyy.MM.dd.HHmm"))</AssemblyVersion>
+		<PackageVersion>$([System.DateTime]::UtcNow.ToString("yyyy.MM.dd.HHmm"))</PackageVersion>
+		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
+		<BaseOutputPath>..\out\</BaseOutputPath>
+	</PropertyGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="MessengerApi.Contracts" Version="2025.6.28.2202" />
+	  <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+	</ItemGroup>
+
+</Project>