using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace wstool
{
	public enum ActivateOptions
	{
		// No flags set
		None = 0x00000000,

		// The application is being activated for design mode, and thus will not be able to
		// to create an immersive window. Window creation must be done by design tools which
		// load the necessary components by communicating with a designer-specified service on
		// the site chain established on the activation manager.  The splash screen normally
		// shown when an application is activated will also not appear.  Most activations
		// will not use this flag.
		DesignMode = 0x00000001,

		// Do not show an error dialog if the app fails to activate
		NoErrorUI = 0x00000002,

		// Do not show the splash screen when activating the app
		NoSplashScreen = 0x00000004
	}

	[ComImport, Guid("2e941141-7f97-4756-ba1d-9decde894a3d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
	interface IApplicationActivationManager
	{
		// Activates the specified immersive application for the "Launch" contract, passing the provided arguments
		// string into the application.  Callers can obtain the process Id of the application instance fulfilling this contract.
		IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] ActivateOptions options, [Out] out UInt32 processId);
		IntPtr ActivateForFile([In] String appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] String verb, [Out] out UInt32 processId);
		IntPtr ActivateForProtocol([In] String appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out UInt32 processId);
	}

	[ComImport, Guid("45BA127D-10A8-46EA-8AB7-56EA9078943C")] // Application Activation Manager
	class ApplicationActivationManager : IApplicationActivationManager
	{
		[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)/*, PreserveSig*/]
		public extern IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] ActivateOptions options, [Out] out UInt32 processId);
		[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
		public extern IntPtr ActivateForFile([In] String appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] String verb, [Out] out UInt32 processId);
		[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
		public extern IntPtr ActivateForProtocol([In] String appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out UInt32 processId);
	}
}