public async void DownloadItem(ResourceItem item)
{
var client = new HttpClient();
var cancellationTokenSource = new CancellationTokenSource();
var cancellationToken = cancellationTokenSource.Token;
CancellationTokens[item.id] = cancellationTokenSource;
try
{
Progress <double> progress = new Progress <double>();
progress.ProgressChanged += (sender, value) =>
{
ReportProgress(item, value);
};
var tempFolder = Windows.Storage.ApplicationData.Current.TemporaryFolder;
var tempFile = await tempFolder.CreateFileAsync(GuidHelper.CreateNewGuid().ToString() + ".zip");
var response = await client.GetAsync(item.item, HttpCompletionOption.ResponseHeadersRead, cancellationToken);
response.EnsureSuccessStatusCode();
var total = response.Content.Headers.ContentLength.HasValue ? response.Content.Headers.ContentLength.Value : -1L;
var canReportProgress = total != -1 && progress != null;
using (var stream = await response.Content.ReadAsStreamAsync())
using (var outputStream = await tempFile.OpenStreamForWriteAsync())
{
var totalRead = 0L;
var buffer = new byte[4096];
var isMoreToRead = true;
do
{
cancellationToken.ThrowIfCancellationRequested();
var read = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken);
if (read == 0)
{
isMoreToRead = false;
}
else
{
var data = new byte[read];
buffer.ToList().CopyTo(0, data, 0, read);
totalRead += read;
await outputStream.WriteAsync(data, 0, read);
if (canReportProgress)
{
((IProgress <double>)progress).Report((totalRead * 1d) / (total * 1d));
}
}
} while (isMoreToRead);
}
var destinationPath = ItemPath(item);
ZipFile.ExtractToDirectory(tempFile.Path, destinationPath);
File.WriteAllText(destinationPath + "\\description.json", JsonConvert.SerializeObject(item));
CancellationTokens.Remove(item.id);
DownloadSuccess(item);
}
catch
{
CancellationTokens.Remove(item.id);
DownloadFailure(item);
}
}
public string ItemPath(ResourceItem item)
{
return(AddonFolderPath + "\\" + item.id);
}
private void ShowItem(ResourceItem item)
{
Nav.IsBackEnabled = true;
Container.Navigate(typeof(ResourceItemPage), new ItemParameter(item));
}
private void ReportProgress(ResourceItem item, double progress)
{
ProgressUpdate(item, progress);
}
public ItemParameter(ResourceItem item)
{
this.Item = item;
}