/// <exception cref="IOException">Failed to apply the update.</exception>
public async Task Update(Progress <double> progressCallback, CancellationToken cancellationToken)
{
var downloadTarget = await GetTempDownloadFilename();
// Need to store the filename because MoveTo changes it to the new filename
var downloadFilename = downloadTarget.FullName;
if (RemoteFile != null)
{
Console.WriteLine($"Attempting download of {TargetPath.Name} from source {RemoteFile.Source.Origin}");
await RetryHelper.RetryOnExceptionAsync(async() => await RemoteFile.Download(downloadTarget, progressCallback, cancellationToken), 2, TimeSpan.FromSeconds(10), cancellationToken);
downloadTarget.Refresh();
if (!downloadTarget.Exists || downloadTarget.Length != RemoteFile.ItemSize)
{
throw new IOException($"Failed to download the update file {RemoteFile.Name} - the downloaded file doesn't exist or is corrupted");
}
Console.WriteLine($"Downloaded {downloadTarget.Length} bytes successfully");
}
retryDelete:
try
{
Directory.CreateDirectory(Path.GetDirectoryName(TargetPath.FullName));
try
{
if (TargetPath.Exists)
{
Console.WriteLine($"Deleting old file {TargetPath.FullName}");
// Prevent issues removing readonly files
TargetPath.Attributes = FileAttributes.Normal;
TargetPath.Delete();
// Make sure the file gets deleted before continuing
await Task.Delay(200, cancellationToken);
}
if (RemoteFile != null)
{
downloadTarget.MoveTo(TargetPath.FullName);
}
}
catch (IOException)
{
if (RemoteFile != null)
{
await Task.Delay(1000, cancellationToken);
downloadTarget.Replace(TargetPath.FullName, TargetPath.FullName + ".old", true);
await Task.Delay(1000, cancellationToken);
File.Delete(TargetPath.FullName + ".old");
}
else
{
throw;
}
}
}
catch (IOException ex)
{
if (await ProcessWaiter.CheckForProcessesBlockingKoiDir() != true)
{
throw RetryHelper.DoNotAttemptToRetry(new IOException($"Failed to apply update {TargetPath.FullName} because of an IO issue - {ex.Message}", ex));
}
goto retryDelete;
}
catch (SecurityException ex)
{
if (MessageBox.Show($"Failed to apply update {TargetPath.FullName} because of a security issue - {ex.Message}\n\nDo you want KK Manager to attempt to fix the issue? Click cancel if you want to abort.", "Could not apply update", MessageBoxButtons.OKCancel, MessageBoxIcon.Error) != DialogResult.OK)
{
throw;
}
var fixPermissions = ProcessTools.FixPermissions(InstallDirectoryHelper.GameDirectory.FullName);
if (fixPermissions == null)
{
throw RetryHelper.DoNotAttemptToRetry(new IOException($"Failed to create file in directory {TargetPath.FullName} because of a security issue - {ex.Message}", ex));
}
fixPermissions.WaitForExit();
goto retryDelete;
}
finally
{
try { File.Delete(downloadFilename); }
catch (SystemException ex) { Console.WriteLine(ex); }
}
}
public Task Update(Progress <double> progressCallback, CancellationToken cancellationToken)
{
TargetPath.Delete();
return(Task.CompletedTask);
}