Follow ups for Blazor AOT (#31098)

* Follow ups for Blazor AOT

* Add Emscripten packs to manifest
* Update acquire tool to use manifest from the dotnet sdk
* Add AOT option to templates

* Undo Emscripten for now

Author: pranavkm

src/Components/WebAssembly/BlazorManifest/acquire/Program.cs

@@ -25,23 +25,19 @@ static string GetDotnetPath()
 
         static int Main(string[] args)
         {
-            System.Console.WriteLine(MuxerPath);
             var sdkDirectory = args.Length > 0 ? args[0] : Path.GetDirectoryName(MuxerPath);
             var tempDirectory = Path.Combine(Directory.GetCurrentDirectory(), "tmp", Path.GetRandomFileName());
             var restoreDirectory = Path.Combine(tempDirectory, ".nuget");
 
             try
             {
-                var restore = Restore(tempDirectory, restoreDirectory, out var packs);
+                var packs = GetPacks(sdkDirectory);
+                var restore = RestorePacks(tempDirectory, restoreDirectory, packs);
                 if (restore != 0)
                 {
                     return restore;
                 }
 
-                var sourceManifestDirectory = Path.Combine(restoreDirectory, "microsoft.net.sdk.blazorwebassembly.aot", ManifestVersion);
-                var targetManifestDirectory = Path.Combine(sdkDirectory, "sdk-manifests", ManifestVersion, "Microsoft.NET.Sdk.BlazorWebAssembly.AOT");
-                Move(sourceManifestDirectory, targetManifestDirectory);
-
                 foreach (var (id, version) in packs)
                 {
                     var source = Path.Combine(restoreDirectory, id.ToLowerInvariant(), version);
@@ -59,7 +55,7 @@ static int Main(string[] args)
                 sdkVersionProc.WaitForExit();
                 var sdkVersion = sdkVersionProc.StandardOutput.ReadToEnd().Trim();
                 var sentinelPath = Path.Combine(sdkDirectory, "sdk", sdkVersion, "EnableWorkloadResolver.sentinel");
-                Console.WriteLine($"Writing sentinel to {sentinelPath}.");
+                Console.WriteLine($"Enabling Workloads support in dotnet SDK v{sdkVersion}.");
 
                 File.WriteAllBytes(sentinelPath, Array.Empty<byte>());
             }
@@ -84,64 +80,17 @@ static void Move(string source, string destination)
             Directory.Move(source, destination);
         }
 
-        static int Restore(string tempDirectory, string restoreDirectory, out List<(string, string)> packs)
+        static List<(string Id, string Version)> GetPacks(string sdkDirectory)
         {
-            packs = null;
-
-            var restoreProject = Path.Combine(tempDirectory, "restore", "Restore.csproj");
-            var restoreProjectDirectory = Directory.CreateDirectory(Path.GetDirectoryName(restoreProject));
-
-            File.WriteAllText(Path.Combine(restoreProjectDirectory.FullName, "Directory.Build.props"), "<Project />");
-            File.WriteAllText(Path.Combine(restoreProjectDirectory.FullName, "Directory.Build.targets"), "<Project />");
-
-            var projectFile = @"
-<Project Sdk=""Microsoft.NET.Sdk"">
-    <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
-    </PropertyGroup>
-    <ItemGroup>
-        <PackageReference Include=""Microsoft.NET.Sdk.BlazorWebAssembly.AOT"" Version=""6.0.0-*"" />
-    </ItemGroup>
-</Project>
-";
-            File.WriteAllText(restoreProject, projectFile);
-
-            Console.WriteLine("Restoring...");
-
-            var process = Process.Start(new ProcessStartInfo
-            {
-                FileName = MuxerPath,
-                ArgumentList = { "restore", restoreProject },
-                Environment =
-                {
-                    ["NUGET_PACKAGES"] = restoreDirectory,
-                },
-            });
-            process.WaitForExit();
-            if (process.ExitCode != 0)
+            var manifestDirectory = Path.Combine(sdkDirectory, "sdk-manifests", ManifestVersion, "Microsoft.NET.Workload.BlazorWebAssembly");
+            if (!Directory.Exists(manifestDirectory))
             {
-                Console.Error.WriteLine("Unable to restore Microsoft.NET.Sdk.BlazorWebAssembly.AOT workload.");
-                return 1;
+                throw new DirectoryNotFoundException($"Cound not find directory {manifestDirectory}. A 6.0-preview3 SDK or newer is required for this tool to function.");
             }
 
-            var manifestDirectory = Path.Combine(restoreDirectory, "microsoft.net.sdk.blazorwebassembly.aot");
-            var version = Directory.EnumerateDirectories(manifestDirectory).First();
-
-            manifestDirectory = Path.Combine(manifestDirectory, ManifestVersion);
-            Directory.Move(version, manifestDirectory);
-
             var manifestPath = Path.Combine(manifestDirectory, "WorkloadManifest.json");
             var manifest = JsonSerializer.Deserialize<PackInformation>(File.ReadAllBytes(manifestPath), new JsonSerializerOptions(JsonSerializerDefaults.Web));
-
-            projectFile = @"
-<Project Sdk=""Microsoft.NET.Sdk"">
-    <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
-        <NoWarn>$(NoWarn);NU1213</NoWarn>
-    </PropertyGroup>
-    <ItemGroup>
-";
-            packs = new List<(string id, string version)>();
+            var packs = new List<(string, string)>();
             foreach (var item in manifest.Packs)
             {
                 var packageName = item.Key;
@@ -161,34 +110,56 @@ static int Restore(string tempDirectory, string restoreDirectory, out List<(stri
                     }
                     else
                     {
-                        Console.Error.WriteLine("Unsupported platform.");
-                        return 1;
+                        throw new NotSupportedException("Unsupported OS platform.");
                     }
                 }
-                projectFile += @$"<PackageReference Include=""{packageName}"" Version=""{item.Value.Version}"" />";
                 packs.Add((packageName, item.Value.Version));
             }
 
+            return packs;
+        }
+
+        static int RestorePacks(string tempDirectory, string restoreDirectory, List<(string Id, string Version)> packs)
+        {
+            var restoreProject = Path.Combine(tempDirectory, "restore", "Restore.csproj");
+            var restoreProjectDirectory = Directory.CreateDirectory(Path.GetDirectoryName(restoreProject));
+
+            File.WriteAllText(Path.Combine(restoreProjectDirectory.FullName, "Directory.Build.props"), "<Project />");
+            File.WriteAllText(Path.Combine(restoreProjectDirectory.FullName, "Directory.Build.targets"), "<Project />");
+
+            var projectFile = @"
+<Project Sdk=""Microsoft.NET.Sdk"">
+    <PropertyGroup>
+        <TargetFramework>net6.0</TargetFramework>
+        <NoWarn>$(NoWarn);NU1213</NoWarn>
+    </PropertyGroup>
+    <ItemGroup>
+";
+            foreach (var (Id, Version) in packs)
+            {
+                projectFile += $"<PackageReference Include=\"{Id}\" Version=\"{Version}\" />";
+            }
+
             projectFile += @"
     </ItemGroup>
 </Project>
 ";
             File.WriteAllText(restoreProject, projectFile);
 
-            process = Process.Start(new ProcessStartInfo
+            var process = Process.Start(new ProcessStartInfo
             {
                 FileName = MuxerPath,
                 ArgumentList = { "restore", restoreProject },
+#if !DEBUG
                 RedirectStandardError = true,
                 RedirectStandardOutput = true,
+#endif
                 Environment =
                 {
                     ["NUGET_PACKAGES"] = restoreDirectory,
                 },
             });
             process.WaitForExit();
-
-
             return 0;
         }