Refactor repo and add initial codegen

.github/workflows/release.yml

@@ -114,4 +114,4 @@ jobs:
             ${{ github.workspace }}/build-artifacts/packages/*.nupkg
             --source https://api.nuget.org/v3/index.json
             --api-key ${{ secrets.NUGET_API_KEY }}
-            --skip-duplicate
+            --skip-duplicate

.gitignore

@@ -181,3 +181,11 @@ TempTypeSpecFiles/
 # Artifacts from the generator
 tspCodeModel.json
 Configuration.json
+
+# Base specification files
+specification/base/
+
+# Generator default TypeSpec output
+codegen/tsp-output/
+codegen/temp/
+codegen/emitter/temp/tsconfig.tsbuildinfo

codegen/emitter/src/emitter.ts

@@ -0,0 +1,12 @@
+import { EmitContext } from "@typespec/compiler";
+
+import {
+    $onEmit as $OnMGCEmit,
+    CSharpEmitterOptions
+} from "@typespec/http-client-csharp";
+
+export async function $onEmit(context: EmitContext<CSharpEmitterOptions>) {
+    context.options["generator-name"] = "OpenAILibraryGenerator";
+    context.options["emitter-extension-path"] = import.meta.url;
+    await $OnMGCEmit(context);
+}

codegen/emitter/src/index.ts

@@ -0,0 +1 @@
+export * from "./emitter.js";

codegen/generator/OpenAI.Library.Plugin.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35327.3
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OpenAI.Library.Plugin", "src\OpenAI.Library.Plugin.csproj", "{E46178E4-F3F0-4E2F-8D42-A7F021B23E63}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E46178E4-F3F0-4E2F-8D42-A7F021B23E63}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E46178E4-F3F0-4E2F-8D42-A7F021B23E63}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E46178E4-F3F0-4E2F-8D42-A7F021B23E63}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E46178E4-F3F0-4E2F-8D42-A7F021B23E63}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

codegen/generator/src/OpenAI.Library.Plugin.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <RootNamespace>OpenAI.Microsoft.Generator.CSharp.ClientModel.Plugin</RootNamespace>
+        <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250626.7" />
+    </ItemGroup>
+
+  <!-- Copy output to package dist path for local execution and  -->
+  <Target Name="CopyForNpmPackage" AfterTargets="Build">
+    <Message Text="Copying output to dist path" Importance="high" />
+    <ItemGroup>
+      <SourceDir Include="$(OutputPath)**\*.*" />
+    </ItemGroup>
+    <Copy SourceFiles="@(SourceDir)" DestinationFolder="$(MSBuildThisFileDirectory)..\..\dist\generator\%(RecursiveDir)" />
+    <Copy SourceFiles="..\..\..\node_modules\@typespec\http-client-csharp\dist\generator\Microsoft.TypeSpec.Generator.runtimeconfig.json" DestinationFolder="$(MSBuildThisFileDirectory)..\..\dist\generator" />
+  </Target>
+
+</Project>

codegen/generator/src/OpenAILibraryGenerator.cs

@@ -0,0 +1,43 @@
+using System;
+using System.ComponentModel.Composition;
+using Microsoft.TypeSpec.Generator;
+using Microsoft.TypeSpec.Generator.ClientModel;
+using OpenAILibraryPlugin.Visitors;
+
+namespace OpenAILibraryPlugin
+{
+    [Export(typeof(CodeModelGenerator))]
+    [ExportMetadata("GeneratorName", nameof(OpenAILibraryGenerator))]
+    public class OpenAILibraryGenerator : ScmCodeModelGenerator
+    {
+        private static OpenAILibraryGenerator? s_instance;
+        internal static OpenAILibraryGenerator Instance => s_instance ?? throw new InvalidOperationException("OpenAILibraryGenerator was not initialized.");
+
+        [ImportingConstructor]
+        public OpenAILibraryGenerator(GeneratorContext context) : base(context)
+        {
+            s_instance = this;
+        }
+
+        protected override void Configure()
+        {
+            base.Configure();
+            AddVisitor(new ConstructorFixupVisitor());
+            AddVisitor(new KindRenameVisitor());
+            AddVisitor(new VisibilityVisitor());
+            AddVisitor(new ContentInnerCollectionDefinedVisitor());
+            AddVisitor(new NonAbstractPublicTypesVisitor());
+            AddVisitor(new PageOrderRemovalVisitor(this));
+            AddVisitor(new OmittedTypesVisitor());
+            AddVisitor(new InvariantFormatAdditionalPropertiesVisitor());
+            AddVisitor(new OpenAILibraryVisitor());
+            AddVisitor(new VirtualMessageCreationVisitor());
+            AddVisitor(new ProhibitedNamespaceVisitor());
+            AddVisitor(new ExplicitConversionFromClientResultVisitor());
+            AddVisitor(new ImplicitConversionToBinaryContentVisitor());
+            AddVisitor(new ModelSerializationVisitor());
+            AddVisitor(new ExperimentalAttributeVisitor());
+            AddVisitor(new ModelDirectoryVisitor());
+        }
+    }
+}