public static async Task DownloadDirectoryAsync(this IHosting hosting, UPath source, DirectoryInfo destination,
IProgress <UPath> failures = null, IProgress <UPath> successes = null)
{
if (File.Exists(destination.FullName))
{
throw new UnexpectedItemType("Destination should be a directory");
}
if (destination.Parent == null || File.Exists(destination.Parent.FullName) || !destination.Parent.Exists)
{
throw new UnexpectedItemType("Problem with destination parent");
}
if (!destination.Exists)
{
Directory.CreateDirectory(destination.FullName);
}
var tasks = new List <Task>();
var items = await hosting.GetDirectoryListAsync(source);
foreach (var item in items)
{
var destFile = destination.GetSubFile(item.Name);
var destDir = destination.GetSubDirectory(item.Name);
var task = item.IsFile
? hosting.DownloadFileAsync(item.Path, destFile)
: hosting.DownloadDirectoryAsync(item.Path, destDir, failures, successes);
task = task.ContinueWith(t => (t.IsFaulted ? failures : successes).Report(item.Path));
tasks.Add(task);
}
await Task.WhenAll(tasks);
}
public static async Task DownloadFileAsync(this IHosting hosting, UPath source, FileInfo destination,
IProgress <double> progress = null)
{
using (var stream = destination.OpenWrite())
{
await hosting.DownloadFileAsync(stream, source, progress);
}
}