Remove JsonApiEndpoint, reuse logic from base library

src/JsonApiDotNetCore.OpenApi.Swashbuckle/JsonApiActionDescriptorCollectionProvider.cs

@@ -163,7 +163,7 @@ private static List<ActionDescriptor> Expand(ActionDescriptor genericEndpoint, N
 
             ActionDescriptor expandedEndpoint = Clone(genericEndpoint);
 
-            RemovePathParameter(expandedEndpoint.Parameters, JsonApiPathParameter.RelationshipName);
+            RemovePathParameter(expandedEndpoint.Parameters, "relationshipName");
 
             ExpandTemplate(expandedEndpoint.AttributeRouteInfo!, relationshipName);
 
@@ -212,12 +212,12 @@ private static FilterDescriptor Clone(FilterDescriptor descriptor)
 
     private static void RemovePathParameter(ICollection<ParameterDescriptor> parameters, string parameterName)
     {
-        ParameterDescriptor relationshipName = parameters.Single(parameterDescriptor => parameterDescriptor.Name == parameterName);
-        parameters.Remove(relationshipName);
+        ParameterDescriptor descriptor = parameters.Single(parameterDescriptor => parameterDescriptor.Name == parameterName);
+        parameters.Remove(descriptor);
     }
 
     private static void ExpandTemplate(AttributeRouteInfo route, string expansionParameter)
     {
-        route.Template = route.Template!.Replace(JsonApiRoutingTemplate.RelationshipNameRoutePlaceholder, expansionParameter);
+        route.Template = route.Template!.Replace("{relationshipName}", expansionParameter);
     }
 }

src/JsonApiDotNetCore.OpenApi.Swashbuckle/JsonApiMetadata/EndpointResolver.cs

@@ -1,72 +1,38 @@
 using System.Reflection;
 using JsonApiDotNetCore.Controllers;
-using Microsoft.AspNetCore.Mvc;
+using JsonApiDotNetCore.Middleware;
 using Microsoft.AspNetCore.Mvc.Routing;
 
 namespace JsonApiDotNetCore.OpenApi.Swashbuckle.JsonApiMetadata;
 
 internal sealed class EndpointResolver
 {
-    public JsonApiEndpoint? Get(MethodInfo controllerAction)
+    public static EndpointResolver Instance { get; } = new();
+
+    private EndpointResolver()
+    {
+    }
+
+    public JsonApiEndpoints GetEndpoint(MethodInfo controllerAction)
     {
         ArgumentGuard.NotNull(controllerAction);
 
         if (!IsJsonApiController(controllerAction))
         {
-            return null;
-        }
-
-        if (IsAtomicOperationsController(controllerAction))
-        {
-            return JsonApiEndpoint.PostOperations;
+            return JsonApiEndpoints.None;
         }
 
-        HttpMethodAttribute? method = Attribute.GetCustomAttributes(controllerAction, true).OfType<HttpMethodAttribute>().FirstOrDefault();
-
-        return ResolveJsonApiEndpoint(method);
+        IEnumerable<HttpMethodAttribute> httpMethodAttributes = controllerAction.GetCustomAttributes<HttpMethodAttribute>(true);
+        return httpMethodAttributes.GetJsonApiEndpoint();
     }
 
-    private static bool IsJsonApiController(MethodInfo controllerAction)
+    private bool IsJsonApiController(MethodInfo controllerAction)
     {
         return typeof(CoreJsonApiController).IsAssignableFrom(controllerAction.ReflectedType);
     }
 
-    private static bool IsAtomicOperationsController(MethodInfo controllerAction)
+    public bool IsAtomicOperationsController(MethodInfo controllerAction)
     {
         return typeof(BaseJsonApiOperationsController).IsAssignableFrom(controllerAction.ReflectedType);
     }
-
-    private static JsonApiEndpoint? ResolveJsonApiEndpoint(HttpMethodAttribute? httpMethod)
-    {
-        return httpMethod switch
-        {
-            HttpGetAttribute attr => attr.Template switch
-            {
-                null => JsonApiEndpoint.GetCollection,
-                JsonApiRoutingTemplate.PrimaryEndpoint => JsonApiEndpoint.GetSingle,
-                JsonApiRoutingTemplate.SecondaryEndpoint => JsonApiEndpoint.GetSecondary,
-                JsonApiRoutingTemplate.RelationshipEndpoint => JsonApiEndpoint.GetRelationship,
-                _ => null
-            },
-            HttpPostAttribute attr => attr.Template switch
-            {
-                null => JsonApiEndpoint.PostResource,
-                JsonApiRoutingTemplate.RelationshipEndpoint => JsonApiEndpoint.PostRelationship,
-                _ => null
-            },
-            HttpPatchAttribute attr => attr.Template switch
-            {
-                JsonApiRoutingTemplate.PrimaryEndpoint => JsonApiEndpoint.PatchResource,
-                JsonApiRoutingTemplate.RelationshipEndpoint => JsonApiEndpoint.PatchRelationship,
-                _ => null
-            },
-            HttpDeleteAttribute attr => attr.Template switch
-            {
-                JsonApiRoutingTemplate.PrimaryEndpoint => JsonApiEndpoint.DeleteResource,
-                JsonApiRoutingTemplate.RelationshipEndpoint => JsonApiEndpoint.DeleteRelationship,
-                _ => null
-            },
-            _ => null
-        };
-    }
 }

src/JsonApiDotNetCore.OpenApi.Swashbuckle/JsonApiMetadata/JsonApiEndpointMetadataProvider.cs

@@ -1,5 +1,6 @@
 using System.Reflection;
 using JsonApiDotNetCore.Configuration;
+using JsonApiDotNetCore.Controllers;
 using JsonApiDotNetCore.Middleware;
 using JsonApiDotNetCore.OpenApi.Swashbuckle.JsonApiObjects.Documents;
 using JsonApiDotNetCore.Resources.Annotations;
@@ -12,18 +13,14 @@ namespace JsonApiDotNetCore.OpenApi.Swashbuckle.JsonApiMetadata;
 /// </summary>
 internal sealed class JsonApiEndpointMetadataProvider
 {
-    private readonly EndpointResolver _endpointResolver;
     private readonly IControllerResourceMapping _controllerResourceMapping;
     private readonly NonPrimaryDocumentTypeFactory _nonPrimaryDocumentTypeFactory;
 
-    public JsonApiEndpointMetadataProvider(EndpointResolver endpointResolver, IControllerResourceMapping controllerResourceMapping,
-        NonPrimaryDocumentTypeFactory nonPrimaryDocumentTypeFactory)
+    public JsonApiEndpointMetadataProvider(IControllerResourceMapping controllerResourceMapping, NonPrimaryDocumentTypeFactory nonPrimaryDocumentTypeFactory)
     {
-        ArgumentGuard.NotNull(endpointResolver);
         ArgumentGuard.NotNull(controllerResourceMapping);
         ArgumentGuard.NotNull(nonPrimaryDocumentTypeFactory);
 
-        _endpointResolver = endpointResolver;
         _controllerResourceMapping = controllerResourceMapping;
         _nonPrimaryDocumentTypeFactory = nonPrimaryDocumentTypeFactory;
     }
@@ -32,16 +29,16 @@ public JsonApiEndpointMetadataContainer Get(MethodInfo controllerAction)
     {
         ArgumentGuard.NotNull(controllerAction);
 
-        JsonApiEndpoint? endpoint = _endpointResolver.Get(controllerAction);
-
-        if (endpoint == null)
+        if (EndpointResolver.Instance.IsAtomicOperationsController(controllerAction))
         {
-            throw new NotSupportedException($"Unable to provide metadata for non-JSON:API endpoint '{controllerAction.ReflectedType!.FullName}'.");
+            return new JsonApiEndpointMetadataContainer(AtomicOperationsRequestMetadata.Instance, AtomicOperationsResponseMetadata.Instance);
         }
 
-        if (endpoint == JsonApiEndpoint.PostOperations)
+        JsonApiEndpoints endpoint = EndpointResolver.Instance.GetEndpoint(controllerAction);
+
+        if (endpoint == JsonApiEndpoints.None)
         {
-            return new JsonApiEndpointMetadataContainer(AtomicOperationsRequestMetadata.Instance, AtomicOperationsResponseMetadata.Instance);
+            throw new NotSupportedException($"Unable to provide metadata for non-JSON:API endpoint '{controllerAction.ReflectedType!.FullName}'.");
         }
 
         ResourceType? primaryResourceType = _controllerResourceMapping.GetResourceTypeForController(controllerAction.ReflectedType);
@@ -51,19 +48,19 @@ public JsonApiEndpointMetadataContainer Get(MethodInfo controllerAction)
             throw new UnreachableCodeException();
         }
 
-        IJsonApiRequestMetadata? requestMetadata = GetRequestMetadata(endpoint.Value, primaryResourceType);
-        IJsonApiResponseMetadata? responseMetadata = GetResponseMetadata(endpoint.Value, primaryResourceType);
+        IJsonApiRequestMetadata? requestMetadata = GetRequestMetadata(endpoint, primaryResourceType);
+        IJsonApiResponseMetadata? responseMetadata = GetResponseMetadata(endpoint, primaryResourceType);
         return new JsonApiEndpointMetadataContainer(requestMetadata, responseMetadata);
     }
 
-    private IJsonApiRequestMetadata? GetRequestMetadata(JsonApiEndpoint endpoint, ResourceType primaryResourceType)
+    private IJsonApiRequestMetadata? GetRequestMetadata(JsonApiEndpoints endpoint, ResourceType primaryResourceType)
     {
         return endpoint switch
         {
-            JsonApiEndpoint.PostResource => GetPostResourceRequestMetadata(primaryResourceType.ClrType),
-            JsonApiEndpoint.PatchResource => GetPatchResourceRequestMetadata(primaryResourceType.ClrType),
-            JsonApiEndpoint.PostRelationship or JsonApiEndpoint.PatchRelationship or JsonApiEndpoint.DeleteRelationship => GetRelationshipRequestMetadata(
-                primaryResourceType.Relationships, endpoint != JsonApiEndpoint.PatchRelationship),
+            JsonApiEndpoints.Post => GetPostResourceRequestMetadata(primaryResourceType.ClrType),
+            JsonApiEndpoints.Patch => GetPatchResourceRequestMetadata(primaryResourceType.ClrType),
+            JsonApiEndpoints.PostRelationship or JsonApiEndpoints.PatchRelationship or JsonApiEndpoints.DeleteRelationship => GetRelationshipRequestMetadata(
+                primaryResourceType.Relationships, endpoint != JsonApiEndpoints.PatchRelationship),
             _ => null
         };
     }
@@ -92,14 +89,14 @@ private RelationshipRequestMetadata GetRelationshipRequestMetadata(IEnumerable<R
         return new RelationshipRequestMetadata(requestDocumentTypesByRelationshipName);
     }
 
-    private IJsonApiResponseMetadata? GetResponseMetadata(JsonApiEndpoint endpoint, ResourceType primaryResourceType)
+    private IJsonApiResponseMetadata? GetResponseMetadata(JsonApiEndpoints endpoint, ResourceType primaryResourceType)
     {
         return endpoint switch
         {
-            JsonApiEndpoint.GetCollection or JsonApiEndpoint.GetSingle or JsonApiEndpoint.PostResource or JsonApiEndpoint.PatchResource =>
-                GetPrimaryResponseMetadata(primaryResourceType.ClrType, endpoint == JsonApiEndpoint.GetCollection),
-            JsonApiEndpoint.GetSecondary => GetSecondaryResponseMetadata(primaryResourceType.Relationships),
-            JsonApiEndpoint.GetRelationship => GetRelationshipResponseMetadata(primaryResourceType.Relationships),
+            JsonApiEndpoints.GetCollection or JsonApiEndpoints.GetSingle or JsonApiEndpoints.Post or JsonApiEndpoints.Patch => GetPrimaryResponseMetadata(
+                primaryResourceType.ClrType, endpoint == JsonApiEndpoints.GetCollection),
+            JsonApiEndpoints.GetSecondary => GetSecondaryResponseMetadata(primaryResourceType.Relationships),
+            JsonApiEndpoints.GetRelationship => GetRelationshipResponseMetadata(primaryResourceType.Relationships),
             _ => null
         };
     }