Create and use a memory stream for binary model types

Author: alec-petersen

modules/openapi-generator/src/main/resources/csharp/libraries/generichost/AsModel.mustache

@@ -1,4 +1,4 @@
 // This logic may be modified with the AsModel.mustache template
 return Is{{vendorExtensions.x-http-status}}
-    ? System.Text.Json.JsonSerializer.Deserialize<{{#isModel}}{{^containerType}}{{packageName}}.{{modelPackage}}.{{/containerType}}{{/isModel}}{{{dataType}}}>(RawContent, _jsonSerializerOptions)
+    ? {{#isBinary}}ContentStream{{/isBinary}}{{^isBinary}}System.Text.Json.JsonSerializer.Deserialize<{{#isModel}}{{^containerType}}{{packageName}}.{{modelPackage}}.{{/containerType}}{{/isModel}}{{{dataType}}}>(RawContent, _jsonSerializerOptions){{/isBinary}}
     : {{#net60OrLater}}null{{/net60OrLater}}{{^net60OrLater}}default{{/net60OrLater}};

modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api.mustache

@@ -624,11 +624,35 @@ namespace {{packageName}}.{{apiPackage}}
 
                     using (HttpResponseMessage httpResponseMessageLocalVar = await HttpClient.SendAsync(httpRequestMessageLocalVar, cancellationToken).ConfigureAwait(false))
                     {
-                        string responseContentLocalVar = await httpResponseMessageLocalVar.Content.ReadAsStringAsync({{#net60OrLater}}cancellationToken{{/net60OrLater}}).ConfigureAwait(false);
-
                         ILogger<{{#vendorExtensions.x-duplicates}}{{.}}.{{/vendorExtensions.x-duplicates}}{{operationId}}ApiResponse> apiResponseLoggerLocalVar = LoggerFactory.CreateLogger<{{#vendorExtensions.x-duplicates}}{{.}}.{{/vendorExtensions.x-duplicates}}{{operationId}}ApiResponse>();
+                        {{#vendorExtensions.x-duplicates}}{{.}}.{{/vendorExtensions.x-duplicates}}{{operationId}}ApiResponse apiResponseLocalVar;
+
+                        switch ((int)httpResponseMessageLocalVar.StatusCode) {
+                            {{#responses}}
+                            {{#isBinary}}
+                            case ({{code}}):
+                            {{/isBinary}}
+                            {{/responses}}
+                            {{#responses}}
+                            {{#isBinary}}
+                            {{#-first}}
+                            {
+                                byte[] responseBytesArrayLocalVar = await httpResponseMessageLocalVar.Content.ReadAsByteArrayAsync({{#net60OrLater}}cancellationToken{{/net60OrLater}}).ConfigureAwait(false);
+                                System.IO.Stream responseContentStreamLocalVar = new System.IO.MemoryStream(responseBytesArrayLocalVar);
+                                apiResponseLocalVar = new{{^net60OrLater}} {{operationId}}ApiResponse{{/net60OrLater}}(apiResponseLoggerLocalVar, httpRequestMessageLocalVar, httpResponseMessageLocalVar, responseContentStreamLocalVar, "{{{path}}}", requestedAtLocalVar, _jsonSerializerOptions);
 
-                        {{#vendorExtensions.x-duplicates}}{{.}}.{{/vendorExtensions.x-duplicates}}{{operationId}}ApiResponse apiResponseLocalVar = new{{^net60OrLater}} {{operationId}}ApiResponse{{/net60OrLater}}(apiResponseLoggerLocalVar, httpRequestMessageLocalVar, httpResponseMessageLocalVar, responseContentLocalVar, "{{{path}}}", requestedAtLocalVar, _jsonSerializerOptions);
+                                break;
+                            }
+                            {{/-first}}
+                            {{/isBinary}}
+                            {{/responses}}
+                            default: {
+                                string responseContentLocalVar = await httpResponseMessageLocalVar.Content.ReadAsStringAsync({{#net60OrLater}}cancellationToken{{/net60OrLater}}).ConfigureAwait(false);
+                                apiResponseLocalVar = new{{^net60OrLater}} {{operationId}}ApiResponse{{/net60OrLater}}(apiResponseLoggerLocalVar, httpRequestMessageLocalVar, httpResponseMessageLocalVar, responseContentLocalVar, "{{{path}}}", requestedAtLocalVar, _jsonSerializerOptions);
+
+                                break;
+                            }
+                        }
 
                         After{{operationId}}DefaultImplementation({{#lambda.joinWithComma}}apiResponseLocalVar  {{#allParams}}{{paramName}}  {{/allParams}}{{/lambda.joinWithComma}});
 
@@ -717,6 +741,22 @@ namespace {{packageName}}.{{apiPackage}}
                 OnCreated(httpRequestMessage, httpResponseMessage);
             }
 
+            /// <summary>
+            /// The <see cref="{{operationId}}ApiResponse"/>
+            /// </summary>
+            /// <param name="logger"></param>
+            /// <param name="httpRequestMessage"></param>
+            /// <param name="httpResponseMessage"></param>
+            /// <param name="contentStream"></param>
+            /// <param name="path"></param>
+            /// <param name="requestedAt"></param>
+            /// <param name="jsonSerializerOptions"></param>
+            public {{operationId}}ApiResponse(ILogger<{{operationId}}ApiResponse> logger, System.Net.Http.HttpRequestMessage httpRequestMessage, System.Net.Http.HttpResponseMessage httpResponseMessage, System.IO.Stream contentStream, string path, DateTime requestedAt, System.Text.Json.JsonSerializerOptions jsonSerializerOptions) : base(httpRequestMessage, httpResponseMessage, contentStream, path, requestedAt, jsonSerializerOptions)
+            {
+                Logger = logger;
+                OnCreated(httpRequestMessage, httpResponseMessage);
+            }
+
             partial void OnCreated(global::System.Net.Http.HttpRequestMessage httpRequestMessage, System.Net.Http.HttpResponseMessage httpResponseMessage);
             {{#responses}}