/// <summary>
/// Copy files from the download cache to the desired installation state
/// </summary>
/// <remarks>Precondition: all files must already exist in the cache</remarks>
protected async Task <ILibraryOperationResult> WriteToFilesAsync(ILibraryInstallationState state, CancellationToken cancellationToken)
{
if (state.Files != null)
{
try
{
foreach (string file in state.Files)
{
if (cancellationToken.IsCancellationRequested)
{
return(LibraryOperationResult.FromCancelled(state));
}
if (string.IsNullOrEmpty(file))
{
string id = LibraryNamingScheme.GetLibraryId(state.Name, state.Version);
return(new LibraryOperationResult(state, PredefinedErrors.FileNameMustNotBeEmpty(id)));
}
string sourcePath = GetCachedFileLocalPath(state, file);
string destinationPath = Path.Combine(state.DestinationPath, file);
bool writeOk = await HostInteraction.CopyFileAsync(sourcePath, destinationPath, cancellationToken);
if (!writeOk)
{
return(new LibraryOperationResult(state, PredefinedErrors.CouldNotWriteFile(file)));
}
}
}
catch (UnauthorizedAccessException)
{
return(new LibraryOperationResult(state, PredefinedErrors.PathOutsideWorkingDirectory()));
}
catch (Exception ex)
{
HostInteraction.Logger.Log(ex.ToString(), LogLevel.Error);
return(new LibraryOperationResult(state, PredefinedErrors.UnknownException()));
}
}
return(LibraryOperationResult.FromSuccess(state));
}
