public Downloader(Windows.Storage.IStorageFile loсalFile, OneDrive.IFileStorageFile file)
{
RemoteFile = file;
_loсalFile = loсalFile;
TotalBytesToTransfer = RemoteFile.Size;
_localFileToken = StorageApplicationPermissions.FutureAccessList.Add(loсalFile);
}
private async Task Run()
{
_cancellationToken = new CancellationTokenSource();
var request = new System.Net.Http.HttpRequestMessage(System.Net.Http.HttpMethod.Get, _uploadUrl);
request.Headers.Authorization =
new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _storageFolder.Account.Token);
var httpClient = new System.Net.Http.HttpClient();
var response = await httpClient.SendAsync(request);
if (response.StatusCode != HttpStatusCode.Created && response.StatusCode != HttpStatusCode.OK)
{
throw new InvalidOperationException("Session of upload did not create");
}
DeserializedUploadSession deserializedUploadSession = new DeserializedUploadSession();
using (System.IO.Stream stream = await response.Content.ReadAsStreamAsync())
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(deserializedUploadSession.GetType());
deserializedUploadSession = ser.ReadObject(stream) as DeserializedUploadSession;
if (deserializedUploadSession?.NextExpectedRanges == null)
{
throw new NullReferenceException("Couldn't deserialized the data");
}
}
var fileStream = await _loсalFile.OpenReadAsync();
uint bytesCount = 13 * 320 * 1024;
Byte[] bytes = new byte[bytesCount];
Regex regex = new Regex("[0-9]*");
var result = regex.Match(deserializedUploadSession.NextExpectedRanges[0]);
_previewUploadBytes = UInt32.Parse(result.Value);
fileStream.Seek(_previewUploadBytes);
ulong offset = _previewUploadBytes;
string token = _storageFolder.Account.Token;
do
{
request = new System.Net.Http.HttpRequestMessage(System.Net.Http.HttpMethod.Put, _uploadUrl);
request.Headers.Authorization =
new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", token);
var reader = await fileStream.ReadAsync(bytes.AsBuffer(), bytesCount, InputStreamOptions.None);
request.Content = new ByteArrayContent(reader.ToArray());
request.Content.Headers.ContentRange = new ContentRangeHeaderValue((long)offset, (long)offset + reader.Length - 1,
(long)TotalBytesToTransfer);
response = await httpClient.SendAsync(request);
offset += reader.Length;
} while (offset != TotalBytesToTransfer && !_cancellationToken.IsCancellationRequested);
if (_cancellationToken.IsCancellationRequested)
{
StorageApplicationPermissions.FutureAccessList.Remove(_localFileToken);
return;
}
DeserializedItem deserializedItem = new DeserializedItem();
using (System.IO.Stream stream = await response.Content.ReadAsStreamAsync())
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(deserializedItem.GetType());
deserializedItem = ser.ReadObject(stream) as DeserializedItem;
if (deserializedItem?.File == null)
{
throw new NullReferenceException("Couldn't deserialized the data");
}
}
RemoteFile = new FileStorageFile(new FileBuilder(deserializedItem))
{
Account = _storageFolder.Account
};
StorageApplicationPermissions.FutureAccessList.Remove(_localFileToken);
}
