embed ui executable directly into c# assembly

.github/workflows/build.yml

@@ -52,19 +52,15 @@ jobs:
       - name: Restore NuGet packages
         run: dotnet restore -r win-x64 ./Il2CppInspector.Redux.GUI
       
-      - name: Build GUI C# component
+        # note: we embed the exe directly into the c# component, and it it is built alongside it
+        # in another msbuild target.
+      - name: Build GUI
         run: dotnet publish ./Il2CppInspector.Redux.GUI/Il2CppInspector.Redux.GUI.csproj -r win-x64 --no-self-contained
 
-      - name: Build GUI TS component
-        run: pnpm tauri build --no-bundle
-        working-directory: ./Il2CppInspector.Redux.GUI.UI
-
       - name: Copy components to output directory
         run: |
            mkdir ./build_output
-           mkdir ./build_output/resources
            cp ./Il2CppInspector.Redux.GUI/bin/Release/net9.0/win-x64/publish/Il2CppInspector.Redux.GUI.exe ./build_output/
-           cp ./Il2CppInspector.Redux.GUI.UI/src-tauri/target/release/il2cppinspectorredux.exe ./build_output/resources/
 
       - name: Upload GUI Artifact
         uses: actions/upload-artifact@v4

Il2CppInspector.Redux.GUI/Il2CppInspector.Redux.GUI.csproj

@@ -5,10 +5,10 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <InvariantGlobalization>true</InvariantGlobalization>
-    <PublishAot>false</PublishAot>
-	  <!-- todo: enable this once the app is aot compliant! -->
-	  <OutputType Condition="'$(Configuration)' == 'Release'">WinExe</OutputType>
-	  <PublishSingleFile>true</PublishSingleFile>
+      <!-- todo: enable this once the app is aot compliant! -->
+      <PublishAot>false</PublishAot>
+      <OutputType Condition="'$(Configuration)' == 'Release'">WinExe</OutputType>
+      <PublishSingleFile>true</PublishSingleFile>
   </PropertyGroup>
 
   <ItemGroup>
@@ -16,4 +16,12 @@
     <ProjectReference Include="..\Il2CppInspector.Common\Il2CppInspector.csproj" />
   </ItemGroup>
 
+    <!-- todo: this needs to be adjusted for multiplatform support -->
+    <Target Name="BuildTauriFrontend" BeforeTargets="BeforeBuild">
+        <Exec Command="pnpm tauri build --no-bundle" WorkingDirectory="..\Il2CppInspector.Redux.GUI.UI" />
+        <ItemGroup>
+            <EmbeddedResource Include="..\Il2CppInspector.Redux.GUI.UI\src-tauri\target\release\il2cppinspectorredux.exe" />
+        </ItemGroup>
+    </Target>
+
 </Project>

Il2CppInspector.Redux.GUI/UiProcessService.cs

@@ -4,14 +4,39 @@ namespace Il2CppInspector.Redux.GUI;
 
 public class UiProcessService(IHostApplicationLifetime lifetime) : BackgroundService
 {
-    // NOTE: this is not really a good solution for getting people to launch the correct program.
-    private const string UiExecutableName = "./resources/il2cppinspectorredux.exe";
+    // TODO: This needs to be adjusted for multiplatform support
+    private const string UiExecutableName = "il2cppinspectorredux.exe";
 
     private Process? _uiProcess;
+    private string? _uiExectuablePath;
 
     public void LaunchUiProcess(int port)
     {
-        _uiProcess = Process.Start(new ProcessStartInfo(UiExecutableName, [port.ToString()]));
+        _uiExectuablePath ??= ExtractUiExecutable();
+        _uiProcess = Process.Start(new ProcessStartInfo(_uiExectuablePath, [port.ToString()]));
+    }
+
+    private static string ExtractUiExecutable()
+    {
+        try
+        {
+            using var executable =
+                typeof(UiProcessService).Assembly.GetManifestResourceStream(
+                    $"{typeof(UiProcessService).Namespace!}.{UiExecutableName}");
+            if (executable == null)
+                throw new FileNotFoundException("Failed to open resource as stream.");
+
+            var tempDir = Directory.CreateTempSubdirectory("il2cppinspectorredux-ui");
+            var uiExePath = Path.Join(tempDir.FullName, UiExecutableName);
+
+            using var fs = File.Create(uiExePath);
+            executable.CopyTo(fs);
+            return uiExePath;
+        }
+        catch (Exception ex)
+        {
+            throw new InvalidOperationException($"Failed to find embedded UI executable: {ex}");
+        }
     }
 
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
@@ -28,6 +53,9 @@ public class UiProcessService(IHostApplicationLifetime lifetime) : BackgroundSer
         if (_uiProcess is { HasExited: false }) 
             _uiProcess.Kill();
 
+        if (_uiExectuablePath != null)
+            File.Delete(_uiExectuablePath);
+
         return base.StopAsync(cancellationToken);
     }
 }