/// <summary>
/// Gets the installed version of the product.
/// </summary>
/// <returns></returns>
public async Task <Version> GetInstalledVersionAsync()
{
// 3 major components should be present to detect a valid installation.
// - the binaries (lib, svc executable)
// - the daemon
// - the database
var libVersion = GetInstalledBinaryVersion();
var serviceIsPresent = WindowsServiceIsPresent();
var databaseIsPresent = await DatabaseClient.DatabaseIsPresentAsync().ConfigureAwait(false);
if (libVersion == null && !serviceIsPresent && !databaseIsPresent)
{
// if all the components are missing, return null (product is not installed).
return(null);
}
else if (libVersion != null && serviceIsPresent && databaseIsPresent)
{
// if all the components are present, return the version.
return(libVersion);
}
else
{
// if some of the components are missing (but not all), throw since the installation is damaged.
throw new CmdletExecutionFailedDamagedProductInstallationException("The Archivial Cloud Backup product installation appears to be damaged or partially installed.");
}
}