fix(openapi20): support formData

Author: Fresa

src/OpenAPI.WebApiGenerator/ApiGenerator.cs

@@ -141,8 +141,8 @@ private static void GenerateCode(SourceProductionContext context, (
                 {
                     var contentGenerators = body.GetContent().Select(pair =>
                     {
-                        var requestBodyContent = pair.Value;
-                        var schemaReference = openApiOperationVisitor.GetSchemaReference(requestBodyContent);
+                        var mediaType = pair.Value;
+                        var schemaReference = openApiOperationVisitor.GetSchemaReference(mediaType);
                         var typeDeclaration = schemaGenerator.Generate(schemaReference);
                         return new RequestBodyContentGenerator(
                             pair.Key,

src/OpenAPI.WebApiGenerator/OpenApi/Visitor/V2/OpenApiV2Visitor.OperationVisitor.cs

@@ -15,7 +15,8 @@ private sealed class OperationVisitor :
             private Dictionary<IOpenApiParameter, JsonReference> _parameterSchemaReferences = new();
             private JsonReference? _bodySchemaReference;
             private readonly Dictionary<IOpenApiResponse, IOpenApiResponseVisitor> _responseVisitors = new();
-            
+            private JsonReference? _formDataSchemaReference;
+
             private OperationVisitor(OpenApiReference<OpenApiOperation> openApiReference) : base(openApiReference)
             {
                 VisitParameters();
@@ -36,6 +37,7 @@ private void VisitParameters()
                         new JsonReference(Reference.Uri, parametersPointer.ToString().AsSpan())));
                 _parameterSchemaReferences = parametersVisitor.Schemas;
                 _bodySchemaReference = parametersVisitor.BodySchema;
+                _formDataSchemaReference = parametersVisitor.FormData;
             }
 
             private void VisitResponses()
@@ -58,8 +60,8 @@ internal static OperationVisitor Visit(
             public JsonReference GetSchemaReference(IOpenApiParameter parameter) =>
                 _parameterSchemaReferences[parameter];
 
-            public JsonReference GetSchemaReference(IOpenApiMediaType requestBodyContent) => 
-                _bodySchemaReference ?? throw new InvalidOperationException("Operation doesn't define a body");
+            public JsonReference GetSchemaReference(IOpenApiMediaType mediaType) =>
+                _bodySchemaReference ?? _formDataSchemaReference ?? throw new InvalidOperationException($"Operation {Pointer} doesn't define a body or formData");
 
             public IOpenApiResponseVisitor Visit(IOpenApiResponse response) => 
                 _responseVisitors[response];

src/OpenAPI.WebApiGenerator/OpenApi/Visitor/V2/OpenApiV2Visitor.ParametersVisitor.cs

@@ -17,6 +17,7 @@ private ParametersVisitor(OpenApiReference<IList<IOpenApiParameter>> openApiRefe
 
         internal Dictionary<IOpenApiParameter, JsonReference> Schemas { get; } = new();
         internal JsonReference? BodySchema { get; private set; }
+        internal JsonReference? FormData { get; private set; }
 
         internal static ParametersVisitor Visit(OpenApiReference<IList<IOpenApiParameter>> openApiReference) => 
             new(openApiReference);
@@ -45,11 +46,16 @@ private void VisitParameters()
 
                 parameters.Add((parameterName, parameterLocation),
                     new JsonReference(Reference.Uri, schemaPointer.ToString().AsSpan()));
-                if (parameterLocation == "body")
+                switch (parameterLocation)
                 {
-                    BodySchema = parameters[(parameterName, parameterLocation)];
+                    case "body":
+                        BodySchema = parameters[(parameterName, parameterLocation)];
+                        break;
+                    case "formData":
+                        FormData = parameters[(parameterName, parameterLocation)];
+                        break;
                 }
-                
+
                 parameterIndex++;
             }
 

src/OpenAPI.WebApiGenerator/OpenApi/Visitor/V3/OpenApiV3Visitor.OperationVisitor.cs

@@ -78,8 +78,8 @@ internal static OperationVisitor Visit(
             public JsonReference GetSchemaReference(IOpenApiParameter parameter) =>
                 _parameterSchemaReferences[parameter];
 
-            public JsonReference GetSchemaReference(IOpenApiMediaType requestBodyContent) => 
-                _requestContentSchemaReferences[requestBodyContent];
+            public JsonReference GetSchemaReference(IOpenApiMediaType mediaType) => 
+                _requestContentSchemaReferences[mediaType];
 
             public IOpenApiResponseVisitor Visit(IOpenApiResponse response) => 
                 _responseVisitors[response];