Add support for DI container

src/Stack/Infrastructure/ServiceCollectionTypeRegistrar.cs

@@ -0,0 +1,39 @@
+using Microsoft.Extensions.DependencyInjection;
+using Spectre.Console.Cli;
+
+namespace Stack.Infrastructure;
+
+public sealed class ServiceCollectionTypeRegistrar : ITypeRegistrar
+{
+    private readonly IServiceCollection _builder;
+
+    public ServiceCollectionTypeRegistrar(IServiceCollection builder)
+    {
+        _builder = builder;
+    }
+
+    public ITypeResolver Build()
+    {
+        return new ServiceProviderTypeResolver(_builder.BuildServiceProvider());
+    }
+
+    public void Register(Type service, Type implementation)
+    {
+        _builder.AddSingleton(service, implementation);
+    }
+
+    public void RegisterInstance(Type service, object implementation)
+    {
+        _builder.AddSingleton(service, implementation);
+    }
+
+    public void RegisterLazy(Type service, Func<object> func)
+    {
+        if (func is null)
+        {
+            throw new ArgumentNullException(nameof(func));
+        }
+
+        _builder.AddSingleton(service, (provider) => func());
+    }
+}

src/Stack/Infrastructure/ServiceProviderTypeResolver.cs

@@ -0,0 +1,31 @@
+using Spectre.Console.Cli;
+
+namespace Stack.Infrastructure;
+
+public sealed class ServiceProviderTypeResolver : ITypeResolver, IDisposable
+{
+    private readonly IServiceProvider _provider;
+
+    public ServiceProviderTypeResolver(IServiceProvider provider)
+    {
+        _provider = provider ?? throw new ArgumentNullException(nameof(provider));
+    }
+
+    public object? Resolve(Type? type)
+    {
+        if (type == null)
+        {
+            return null;
+        }
+
+        return _provider.GetService(type);
+    }
+
+    public void Dispose()
+    {
+        if (_provider is IDisposable disposable)
+        {
+            disposable.Dispose();
+        }
+    }
+}

src/Stack/Program.cs

@@ -1,9 +1,14 @@
 
+using Microsoft.Extensions.DependencyInjection;
 using Spectre.Console.Cli;
 using Stack.Commands;
 using Stack.Help;
+using Stack.Infrastructure;
 
-var app = new CommandApp();
+var services = new ServiceCollection();
+var registrar = new ServiceCollectionTypeRegistrar(services);
+
+var app = new CommandApp(registrar);
 app.Configure(configure =>
 {
     configure.SetApplicationName("stack");

src/Stack/Stack.csproj

@@ -14,6 +14,7 @@
 
   <ItemGroup>
     <PackageReference Include="Humanizer.Core" Version="2.14.1" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
     <PackageReference Include="Octopus.Shellfish" Version="0.2.1180" />
     <PackageReference Include="Spectre.Console.Cli" Version="0.49.1" />
   </ItemGroup>