/// <summary>
/// Checks the SlowCheetah NuGet package on current project.
/// If no version is installed, prompts for install of latest version;
/// if an older version is detected, shows update information.
/// </summary>
/// <param name="hierarchy">Hierarchy of the project to be verified</param>
public void CheckSlowCheetahInstallation(IVsHierarchy hierarchy)
{
if (hierarchy == null)
{
throw new ArgumentNullException(nameof(hierarchy));
}
Project currentProject = PackageUtilities.GetAutomationFromHierarchy <Project>(hierarchy, (uint)VSConstants.VSITEMID.Root);
// Whether or not an even older version of SlowCheetah (before NuGet) is installed
bool isOldScInstalled = IsOldSlowCheetahInstalled(hierarchy as IVsBuildPropertyStorage);
if (isOldScInstalled)
{
this.UpdateSlowCheetah(currentProject);
}
else if (!this.IsSlowCheetahInstalled(currentProject))
{
// If SlowCheetah is not installed at all
this.BackgroundInstallSlowCheetah(currentProject);
}
else if (!this.IsSlowCheetahUpdated(currentProject))
{
// In this case, an older NuGet package is installed,
// but traces of old SlowCheetah installation were not found
// This means the user may have manually edited their project file.
// In this case, show the update information so that they know the proper way to uninstall
INugetPackageHandler nugetHandler = NugetHandlerFactory.GetHandler(this.package);
nugetHandler.ShowUpdateInfo();
}
}
/// <summary>
/// Gets the appropriate <see cref="INugetPackageHandler"/> depending on the user's Visual Stuido version
/// </summary>
/// <param name="package">Visual Studio Package</param>
/// <returns>The correct handler</returns>
public static INugetPackageHandler GetHandler(IServiceProvider package)
{
if (handler == null)
{
EnvDTE.DTE dte = ProjectUtilities.GetDTE();
bool showInfoBar = false;
if (Version.TryParse(dte.Version, out Version vsVersion))
{
showInfoBar = vsVersion >= new Version(14, 0);
}
if (showInfoBar)
{
handler = new NugetInfoBarHandler(package);
}
else
{
handler = new LegacyNugetMessageHandler(package);
}
}
return(handler);
}
