Add OnAutoInsert delegation target

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/RazorLanguageServerCustomMessageTargets.cs

@@ -42,5 +42,7 @@ namespace Microsoft.AspNetCore.Razor.LanguageServer.Common
         public const string RazorSignatureHelpEndpointName = "razor/signatureHelp";
 
         public const string RazorImplementationEndpointName = "razor/implementation";
+
+        public const string RazorOnAutoInsertnEndpointName = "razor/onAutoInsert";
     }
 }

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Protocol/DelegatedTypes.cs

@@ -14,6 +14,13 @@ internal record DelegatedPositionParams(
     Position ProjectedPosition,
     RazorLanguageKind ProjectedKind) : IDelegatedParams;
 
+internal record DelegatedOnAutoInsertParams(
+    VersionedTextDocumentIdentifier HostDocument,
+    Position ProjectedPosition,
+    RazorLanguageKind ProjectedKind,
+    string Character,
+    FormattingOptions Options) : IDelegatedParams;
+
 internal record DelegatedRenameParams(
     VersionedTextDocumentIdentifier HostDocument,
     Position ProjectedPosition,

src/Razor/src/Microsoft.VisualStudio.LanguageServerClient.Razor/DefaultRazorLanguageServerCustomMessageTarget.cs

@@ -1083,6 +1083,34 @@ namespace Microsoft.VisualStudio.LanguageServerClient.Razor
             return response?.Response;
         }
 
+        public override async Task<VSInternalDocumentOnAutoInsertResponseItem?> OnAutoInsertAsync(DelegatedOnAutoInsertParams request, CancellationToken cancellationToken)
+        {
+            var delegationDetails = await GetProjectedRequestDetailsAsync(request, cancellationToken).ConfigureAwait(false);
+            if (delegationDetails is null)
+            {
+                return default;
+            }
+
+            var onAutoInsertParams = new VSInternalDocumentOnAutoInsertParams
+            {
+                TextDocument = new TextDocumentIdentifier()
+                {
+                    Uri = delegationDetails.Value.ProjectedUri,
+                },
+                Position = request.ProjectedPosition,
+                Character = request.Character,
+                Options = request.Options
+            };
+
+            var response = await _requestInvoker.ReinvokeRequestOnServerAsync<VSInternalDocumentOnAutoInsertParams, VSInternalDocumentOnAutoInsertResponseItem?>(
+               delegationDetails.Value.TextBuffer,
+               VSInternalMethods.OnAutoInsertName,
+               delegationDetails.Value.LanguageServerName,
+               onAutoInsertParams,
+               cancellationToken).ConfigureAwait(false);
+            return response?.Response;
+        }
+
         public override Task<VSInternalHover?> HoverAsync(DelegatedPositionParams request, CancellationToken cancellationToken)
             => DelegateTextDocumentPositionRequestAsync<VSInternalHover>(request, Methods.TextDocumentHoverName, cancellationToken);
 

src/Razor/src/Microsoft.VisualStudio.LanguageServerClient.Razor/RazorLanguageServerCustomMessageTarget.cs

@@ -114,5 +114,8 @@ namespace Microsoft.VisualStudio.LanguageServerClient.Razor
 
         [JsonRpcMethod(RazorLanguageServerCustomMessageTargets.RazorImplementationEndpointName, UseSingleObjectParameterDeserialization = true)]
         public abstract Task<ImplementationResult> ImplementationAsync(DelegatedPositionParams request, CancellationToken cancellationToken);
+
+        [JsonRpcMethod(RazorLanguageServerCustomMessageTargets.RazorOnAutoInsertnEndpointName, UseSingleObjectParameterDeserialization = true)]
+        public abstract Task<VSInternalDocumentOnAutoInsertResponseItem?> OnAutoInsertAsync(DelegatedOnAutoInsertParams request, CancellationToken cancellationToken);
     }
 }