var
  global_AppCmdFilePath :String;
  global_IsIIS7 :Boolean;
  global_WebSites :SiteList;
  global_WebSiteName :String;
  global_vDir :String;
  global_AppCmdExitCode :Integer;

const
  IISServerName = 'localhost';
  IISApplicationPoolName = 'Test Pool';

  ERROR_NOT_FOUND = 1168;
  ERROR_NOT_SUPPORTED = 50;

  MD_APPPOOL_IDENTITY_TYPE_LOCALSYSTEM = 0;
  MD_APPPOOL_IDENTITY_TYPE_LOCALSERVICE = 1;
  MD_APPPOOL_IDENTITY_TYPE_NETWORKSERVICE = 2;
  MD_APPPOOL_IDENTITY_TYPE_SPECIFICUSER = 3;

  MD_logoN_INTERACTIVE = 0;
  MD_logoN_BATCH = 1;
  MD_logoN_NETWORK = 2;
  MD_logoN_NETWORK_CLEARTEXT = 3;

function ExecAppCmd(params :String) :Boolean;
var
  execSuccessfully :Boolean;
  resultCode :Integer;
begin
  execSuccessfully := Exec('cmd.exe','/c ' + global_AppCmdFilePath + ' ' + params,'',SW_HIDE,ewWaitUntilTerminated,resultCode);

  global_AppCmdExitCode := resultCode;

  Result := execSuccessfully and (resultCode = 0);
end;


function CreateVirtualDirectoryForIIS6(physicalPath :String) :String;
var
  IIS,webService,webServer,webRoot,vDir,vDirApp :Variant;
  appPools,appPool :Variant;
  webSiteId :String;
begin
  webSiteId := GetWebSiteIdByName(global_WebSiteName);

  { Create the main IIS COM Automation object. }
  IIS := CreateOleObject('IISNamespace');

  { Get application pools. }
  appPools := IIS.GetObject('IIsApplicationPools','localhost/W3SVC/AppPools');

  try
    { Check if the application pool already exists. }
    appPool := appPools.GetObject('IIsApplicationPool',IISApplicationPoolName);
  except
    { Crete the application pool. }
    try
      appPool := appPools.Create('IIsApplicationPool',IISApplicationPoolName);

      appPool.logonMethod := MD_logoN_NETWORK_CLEARTEXT;
      appPool.AppPoolIdentityType := MD_APPPOOL_IDENTITY_TYPE_NETWORKSERVICE;

      appPool.SetInfo();
    except
      Result := 'Failed to create an apllication pool.';
      Exit;
    end;
  end;

  { Connect to the IIS server. }
  webService := IIS.GetObject('IIsWebService',IISServerName + '/w3svc');

  { Get the website. }
  webServer := webService.GetObject('IIsWebServer',webSiteId);
  webRoot := webServer.GetObject('IIsWebVirtualDir','Root');

  { Delete the virtual dir if it already exists. }
  try
    webRoot.Delete('IIsWebVirtualDir',global_vDir);
    webRoot.SetInfo();
  except
    { An exception will be raised if there is not such a website. }
  end;

  { Create the virtual directory. }
  try
    vDir := WebRoot.Create('IIsWebVirtualDir',global_vDir);

    vDir.AccessRead := True;
    vDir.AccessScript := True;
    vDir.AppFriendlyName := 'Test friendly name';
    vDir.Path := physicalPath;

    vDir.AppCreate(False);

    vDir.SetInfo();
  except
    Result := 'Failed to create a virtual directory.';
    Exit;
  end;

  { Assign the application pool to the virtual directory. }
  try
    vDir := webRoot.GetObject('IIsWebVirtualDir',global_vDir);

    vDir.AppPoolId := IISApplicationPoolName;

    vDir.SetInfo();
  except
    Result := 'Failed to assign the application pool to the virtual directory.';
    Exit;
  end;
end;

function CreateVirtualDirectoryForIIS7(physicalPath :String) :String;
var
  tempFileName :String;
  appPoolList :String;
  createAppPool :Boolean;
begin
  { Delete the application if it already exists. }
  if not ExecAppCmd(Format('delete app "%s/%s"',[global_WebSiteName,global_vDir])) then
  begin
    if (global_AppCmdExitCode <> ERROR_NOT_FOUND) and (global_AppCmdExitCode <> ERROR_NOT_SUPPORTED) then
    begin
      Result := 'Failed to delete the application.  ' + GetErrorMessageByCode(global_AppCmdExitCode);
      Exit;
    end;
  end;

  { Check if the application pool already exists. }
  tempFileName := ExpandConstant('{tmp}\AppPoolNames.txt');

  ExecAppCmd(Format('list apppool "%s" > "%s"',[IISApplicationPoolName,tempFileName]));

  if (LoadStringFromFile(tempFileName,appPoolList)) then
  begin
    createAppPool := (Pos(IISApplicationPoolName,appPoolList) = 0);
  end
  else
  begin
    createAppPool := True;
  end;

  { Create the application pool. }
  if (createAppPool) then
  begin
    if not ExecAppCmd(Format('add apppool /name:"%s" /managedRuntimeVersion:v4.0',[IISApplicationPoolName])) then
    begin
      Result := 'Failed to add the application pool. ' + GetErrorMessageByCode(global_AppCmdExitCode);
      Exit;
    end;
  end;

  { Create the application. }
  if not ExecAppCmd(Format('add app /site.name:"%s" /path:"/%s" /physicalPath:"%s" /applicationPool:"%s"',global_vDir,physicalPath,IISApplicationPoolName])) then
  begin
    Result := 'Failed to add the application. ' + GetErrorMessageByCode(global_AppCmdExitCode);
    Exit;
  end;

  Result := '';
end;