public void Activate(string localFilename)
{
var appDirectory = Path.GetFullPath(".");
// if the directory PreviousVersion exists, deletes it
if (Directory.Exists(backupDirectory))
{
Directory.Delete(backupDirectory, true);
}
// creates the PreviousVersion directory
Directory.CreateDirectory(backupDirectory);
// copy all the files to the PreviousVersion directory
DirectoryExtensions.CopyExcept(appDirectory, backupDirectory, true, backupDirectory);
// deletes current files (except for this executable, configuration, and previous version)
var launcherFilename = Path.GetFileName(Assembly.GetExecutingAssembly().Location);
var exceptions = new List <string>(otherFilesToPreserve ?? new string[] {});
exceptions.AddRange(new[]
{
backupDirectory,
launcherFilename,
Path.GetFileName(configuration.ConfigurationFullPath),
Path.ChangeExtension(launcherFilename, "pdb"), // for debugging
Path.ChangeExtension(launcherFilename, "vshost.exe") // for debugging
});
exceptions.AddRange(
Assembly
.GetExecutingAssembly()
.GetReferencedAssemblies()
.Select(x => Path.GetFileName(Assembly.Load(x).Location))
);
DirectoryExtensions.DeleteAllExcept(appDirectory, true, exceptions.ToArray());
// uncompress the localfile to the current directory
ZipHelper.Unzip(localFilename);
// restore application configuration from previous version
var appConfigFilename = configuration.ApplicationExe + ".config";
var previousConfiguration = Path.Combine(backupDirectory, appConfigFilename);
if (File.Exists(previousConfiguration))
{
File.Copy(previousConfiguration, appConfigFilename, true);
}
}