- fixes enums projection

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Fixed a bug where the discriminator validation rule would report false positives on nullable union types.
+- Fixed a bug where the order of enum declaration might results in a missing enum type. [#3935](https://github.com/microsoft/kiota/issues/3935)
 
 ## [1.9.1] - 2023-12-13
 

src/Kiota.Builder/Extensions/OpenApiSchemaExtensions.cs

@@ -125,18 +125,19 @@ public static bool IsEnum(this OpenApiSchema schema)
     {
         if (schema is null) return false;
         return schema.Enum.OfType<OpenApiString>().Any(static x => !string.IsNullOrEmpty(x.Value)) &&
-                (string.IsNullOrEmpty(schema.Type) || "string".Equals(schema.Type, StringComparison.OrdinalIgnoreCase)) ||
-                schema.AnyOf.Where(static x => x.IsSemanticallyMeaningful(true)).Count(static x => x.IsEnum()) == 1 && !schema.AnyOf.Where(static x => x.IsSemanticallyMeaningful(true)).Any(static x => !x.IsEnum()) ||
-                schema.OneOf.Where(static x => x.IsSemanticallyMeaningful(true)).Count(static x => x.IsEnum()) == 1 && !schema.OneOf.Where(static x => x.IsSemanticallyMeaningful(true)).Any(static x => !x.IsEnum())
-        ; // number and boolean enums are not supported
+                (string.IsNullOrEmpty(schema.Type) || "string".Equals(schema.Type, StringComparison.OrdinalIgnoreCase)); // number and boolean enums are not supported
     }
     public static bool IsComposedEnum(this OpenApiSchema schema)
     {
-        return (schema.IsInclusiveUnion() && schema.AnyOf.Any(static x => x.IsEnum())) || (schema.IsExclusiveUnion() && schema.OneOf.Any(static x => x.IsEnum()));
+        if (schema is null) return false;
+        return schema.AnyOf.Count(static x => !x.IsSemanticallyMeaningful(true)) == 1 && schema.AnyOf.Count(static x => x.IsEnum()) == 1 ||
+                schema.OneOf.Count(static x => !x.IsSemanticallyMeaningful(true)) == 1 && schema.OneOf.Count(static x => x.IsEnum()) == 1;
     }
-    private static bool IsSemanticallyMeaningful(this OpenApiSchema schema, bool ignoreNullableObjects = false)
+    public static bool IsSemanticallyMeaningful(this OpenApiSchema schema, bool ignoreNullableObjects = false)
     {
+        if (schema is null) return false;
         return schema.Properties.Any() ||
+                schema.Enum is { Count: > 0 } ||
                 schema.Items != null ||
                 (!string.IsNullOrEmpty(schema.Type) &&
                     ((ignoreNullableObjects && !"object".Equals(schema.Type, StringComparison.OrdinalIgnoreCase)) ||

src/Kiota.Builder/KiotaBuilder.cs

@@ -1143,7 +1143,7 @@
 
         if (!"string".Equals(parameter.Type.Name, StringComparison.OrdinalIgnoreCase) && config.IncludeBackwardCompatible)
         { // adding a second indexer for the string version of the parameter so we keep backward compatibility
             //TODO remove for v2
             var backCompatibleValue = (CodeIndexer)result[0].Clone();
             backCompatibleValue.Name += "-string";
             backCompatibleValue.IndexParameter.Type = DefaultIndexerParameterType;
@@ -1300,7 +1300,7 @@
             var suffix = $"{operationType}Response";
             var modelType = CreateModelDeclarations(currentNode, schema, operation, parentClass, suffix);
             if (modelType is not null && config.IncludeBackwardCompatible && config.Language is GenerationLanguage.CSharp or GenerationLanguage.Go && modelType.Name.EndsWith(suffix, StringComparison.Ordinal))
             { //TODO remove for v2
                 var obsoleteTypeName = modelType.Name[..^suffix.Length] + "Response";
                 if (modelType is CodeType codeType &&
                     codeType.TypeDefinition is CodeClass codeClass)
@@ -1433,7 +1433,7 @@
             executorMethod.AddParameter(cancellationParam);// Add cancellation token parameter
 
             if (returnTypes.Item2 is not null && config.IncludeBackwardCompatible)
             { //TODO remove for v2
                 var additionalExecutorMethod = (CodeMethod)executorMethod.Clone();
                 additionalExecutorMethod.ReturnType = returnTypes.Item2;
                 additionalExecutorMethod.OriginalMethod = executorMethod;
@@ -1830,8 +1830,9 @@
 
         if (!string.IsNullOrEmpty(schema.Type) || !string.IsNullOrEmpty(schema.Format))
             return GetPrimitiveType(schema, string.Empty);
-        if (schema.AnyOf.Any() || schema.OneOf.Any() || schema.AllOf.Any()) // we have an empty node because of some local override for schema properties and need to unwrap it.
-            return CreateModelDeclarations(currentNode, (schema.AnyOf.FirstOrDefault() ?? schema.OneOf.FirstOrDefault() ?? schema.AllOf.FirstOrDefault())!, operation, parentElement, suffixForInlineSchema, response, typeNameForInlineSchema, isRequestBody);
+        if ((schema.AnyOf.Any() || schema.OneOf.Any() || schema.AllOf.Any()) &&
+           (schema.AnyOf.FirstOrDefault(static x => x.IsSemanticallyMeaningful(true)) ?? schema.OneOf.FirstOrDefault(static x => x.IsSemanticallyMeaningful(true)) ?? schema.AllOf.FirstOrDefault(static x => x.IsSemanticallyMeaningful(true))) is { } childSchema) // we have an empty node because of some local override for schema properties and need to unwrap it.
+            return CreateModelDeclarations(currentNode, childSchema, operation, parentElement, suffixForInlineSchema, response, typeNameForInlineSchema, isRequestBody);
         return null;
     }
     private CodeTypeBase? CreateCollectionModelDeclaration(OpenApiUrlTreeNode currentNode, OpenApiSchema schema, OpenApiOperation? operation, CodeNamespace codeNamespace, string typeNameForInlineSchema, bool isRequestBody)
@@ -2433,7 +2434,7 @@
         if (!parameterClass.ContainsPropertyWithWireName(prop.WireName))
         {
             if (addBackwardCompatibleParameter && config.IncludeBackwardCompatible && config.Language is GenerationLanguage.CSharp or GenerationLanguage.Go)
             { //TODO remove for v2
                 var modernProp = (CodeProperty)prop.Clone();
                 modernProp.Name = $"{prop.Name}As{modernProp.Type.Name.ToFirstCharacterUpperCase()}";
                 modernProp.SerializationName = prop.WireName;

tests/Kiota.Builder.Tests/Extensions/OpenApiSchemaExtensionsTests.cs

@@ -557,7 +557,7 @@ public void IsEnumIgnoresNullableUnions()
                 }
             }
         };
-        Assert.True(schema.IsEnum());
+        Assert.False(schema.IsEnum());
     }
     [Fact]
     public void IsEnumFailsOnNullableInheritance()
@@ -591,7 +591,7 @@ public void IsEnumIgnoresNullableExclusiveUnions()
                 }
             }
         };
-        Assert.True(schema.IsEnum());
+        Assert.False(schema.IsEnum());
     }
     private static readonly OpenApiSchema numberSchema = new OpenApiSchema
     {

tests/Kiota.Builder.Tests/KiotaBuilderTests.cs

@@ -7299,6 +7299,132 @@ public async Task InheritanceWithAllOfWith3Parts()
         Assert.Single(resultClass.Properties.Where(x => x.Name.Equals("groupprop1", StringComparison.OrdinalIgnoreCase)));
         Assert.Single(resultClass.Properties.Where(x => x.Name.Equals("groupprop2", StringComparison.OrdinalIgnoreCase)));
     }
+    [Fact]
+    public async Task EnumsWithNullableDoesNotResultInInlineType()
+    {
+        var tempFilePath = Path.Combine(Path.GetTempPath(), Path.GetTempFileName());
+        await using var fs = await GetDocumentStream(@"openapi: 3.0.1
+info:
+  title: OData Service for namespace microsoft.graph
+  description: This OData service is located at https://graph.microsoft.com/v1.0
+  version: 1.0.1
+servers:
+  - url: https://graph.microsoft.com/v1.0
+paths:
+  '/communications/calls/{call-id}/reject':
+    post:
+      requestBody:
+        description: Action parameters
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                reason:
+                  anyOf:
+                    - $ref: '#/components/schemas/microsoft.graph.rejectReason'
+                    - type: object
+                      nullable: true
+                callbackUri:
+                  type: string
+                  nullable: true
+        required: true
+      responses:
+        '204':
+          description: Success,
+components:
+  schemas:
+    microsoft.graph.rejectReason:
+      title: rejectReason
+      enum:
+        - none
+        - busy
+        - forbidden
+        - unknownFutureValue
+      type: string");
+        var mockLogger = new Mock<ILogger<KiotaBuilder>>();
+        var builder = new KiotaBuilder(mockLogger.Object, new GenerationConfiguration { ClientClassName = "Graph", OpenAPIFilePath = tempFilePath, IncludeAdditionalData = false }, _httpClient);
+        var document = await builder.CreateOpenApiDocumentAsync(fs);
+        var node = builder.CreateUriSpace(document);
+        var codeModel = builder.CreateSourceModel(node);
+        Assert.NotNull(codeModel);
+        var requestBuilderNS = codeModel.FindNamespaceByName("ApiSdk.communications.calls.item.reject");
+        Assert.NotNull(requestBuilderNS);
+        var requestBuilderClass = requestBuilderNS.FindChildByName<CodeClass>("RejectRequestBuilder", false);
+        Assert.NotNull(requestBuilderClass);
+        var reasonCandidate = requestBuilderNS.FindChildByName<CodeEnum>("RejectPostRequestBody_reason", false);
+        Assert.Null(reasonCandidate);
+        var modelsNS = codeModel.FindNamespaceByName("ApiSdk.Models");
+        Assert.NotNull(modelsNS);
+        var graphModelsNS = modelsNS.FindNamespaceByName("ApiSdk.Models.Microsoft.Graph");
+        Assert.NotNull(graphModelsNS);
+        var rejectReasonEnum = graphModelsNS.FindChildByName<CodeEnum>("RejectReason", false);
+        Assert.NotNull(rejectReasonEnum);
+    }
+
+    [Fact]
+    public async Task EnumsWithNullableDoesNotResultInInlineTypeInReveredOrder()
+    {
+        var tempFilePath = Path.Combine(Path.GetTempPath(), Path.GetTempFileName());
+        await using var fs = await GetDocumentStream(@"openapi: 3.0.1
+info:
+  title: OData Service for namespace microsoft.graph
+  description: This OData service is located at https://graph.microsoft.com/v1.0
+  version: 1.0.1
+servers:
+  - url: https://graph.microsoft.com/v1.0
+paths:
+  '/communications/calls/{call-id}/reject':
+    post:
+      requestBody:
+        description: Action parameters
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                reason:
+                  anyOf:
+                    - type: object
+                      nullable: true
+                    - $ref: '#/components/schemas/microsoft.graph.rejectReason'
+                callbackUri:
+                  type: string
+                  nullable: true
+        required: true
+      responses:
+        '204':
+          description: Success,
+components:
+  schemas:
+    microsoft.graph.rejectReason:
+      title: rejectReason
+      enum:
+        - none
+        - busy
+        - forbidden
+        - unknownFutureValue
+      type: string");
+        var mockLogger = new Mock<ILogger<KiotaBuilder>>();
+        var builder = new KiotaBuilder(mockLogger.Object, new GenerationConfiguration { ClientClassName = "Graph", OpenAPIFilePath = tempFilePath, IncludeAdditionalData = false }, _httpClient);
+        var document = await builder.CreateOpenApiDocumentAsync(fs);
+        var node = builder.CreateUriSpace(document);
+        var codeModel = builder.CreateSourceModel(node);
+        Assert.NotNull(codeModel);
+        var requestBuilderNS = codeModel.FindNamespaceByName("ApiSdk.communications.calls.item.reject");
+        Assert.NotNull(requestBuilderNS);
+        var requestBuilderClass = requestBuilderNS.FindChildByName<CodeClass>("RejectRequestBuilder", false);
+        Assert.NotNull(requestBuilderClass);
+        var reasonCandidate = requestBuilderNS.FindChildByName<CodeEnum>("RejectPostRequestBody_reason", false);
+        Assert.Null(reasonCandidate);
+        var modelsNS = codeModel.FindNamespaceByName("ApiSdk.Models");
+        Assert.NotNull(modelsNS);
+        var graphModelsNS = modelsNS.FindNamespaceByName("ApiSdk.Models.Microsoft.Graph");
+        Assert.NotNull(graphModelsNS);
+        var rejectReasonEnum = graphModelsNS.FindChildByName<CodeEnum>("RejectReason", false);
+        Assert.NotNull(rejectReasonEnum);
+    }
+
     [Fact]
     public async Task AnyTypeResponse()
     {