HACK: Adjust generated code to log HTTP requests/responses

Author: bkoelman

src/Examples/OpenApiLiblabClientExample/output/csharp/JsonApiDotNetCoreClientExample/ColoredConsoleLogHttpMessageHandler.cs

@@ -0,0 +1,67 @@
+using JetBrains.Annotations;
+
+namespace JsonApiDotNetCoreClientExample;
+
+/// <summary>
+/// Writes incoming and outgoing HTTP messages to the console.
+/// </summary>
+internal sealed class ColoredConsoleLogHttpMessageHandler : DelegatingHandler
+{
+    protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+    {
+#if DEBUG
+        await LogRequestAsync(request, cancellationToken);
+#endif
+
+        HttpResponseMessage response = await base.SendAsync(request, cancellationToken);
+
+#if DEBUG
+        await LogResponseAsync(response, cancellationToken);
+#endif
+
+        return response;
+    }
+
+    [UsedImplicitly]
+    private static async Task LogRequestAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+    {
+        using var _ = new ConsoleColorScope(ConsoleColor.Green);
+
+        Console.WriteLine($"--> {request}");
+        string? requestBody = request.Content != null ? await request.Content.ReadAsStringAsync(cancellationToken) : null;
+
+        if (!string.IsNullOrEmpty(requestBody))
+        {
+            Console.WriteLine();
+            Console.WriteLine(requestBody);
+        }
+    }
+
+    [UsedImplicitly]
+    private static async Task LogResponseAsync(HttpResponseMessage response, CancellationToken cancellationToken)
+    {
+        using var _ = new ConsoleColorScope(ConsoleColor.Cyan);
+
+        Console.WriteLine($"<-- {response}");
+        string responseBody = await response.Content.ReadAsStringAsync(cancellationToken);
+
+        if (!string.IsNullOrEmpty(responseBody))
+        {
+            Console.WriteLine();
+            Console.WriteLine(responseBody);
+        }
+    }
+
+    private sealed class ConsoleColorScope : IDisposable
+    {
+        public ConsoleColorScope(ConsoleColor foregroundColor)
+        {
+            Console.ForegroundColor = foregroundColor;
+        }
+
+        public void Dispose()
+        {
+            Console.ResetColor();
+        }
+    }
+}

src/Examples/OpenApiLiblabClientExample/output/csharp/JsonApiDotNetCoreClientExample/JsonApiDotNetCoreClientExampleClient.cs

@@ -18,7 +18,10 @@ public class JsonApiDotNetCoreClientExampleClient : IDisposable
 
     public JsonApiDotNetCoreClientExampleClient(JsonApiDotNetCoreClientExampleConfig? config = null)
     {
-        var retryHandler = new RetryHandler();
+        // HACK: Enable logging of HTTP requests and responses.
+        //var retryHandler = new RetryHandler();
+        var retryHandler = new RetryHandler(new ColoredConsoleLogHttpMessageHandler { InnerHandler = new SocketsHttpHandler() });
+
         _accessTokenHandler = new TokenHandler(retryHandler)
         {
             Header = "Authorization",