public override async Task ResetAsync()
{
windowsFile = await CreateTemporaryFile();
fileStream = await windowsFile.OpenStreamForWriteAsync();
downloader = new RestRequests.Downloader(CloudFile.Id, fileStream);
}
protected override async Task StartPrivateAsync()
{
switch (Status)
{
case NetworkStatus.ErrorNeedRestart:
case NetworkStatus.NotStarted:
case NetworkStatus.Paused:
{
if (Status != NetworkStatus.Paused)
{
//Status = NetworkStatus.Starting;
//MyLogger.Assert(downloader == null && windowsFile == null && fileStream == null);
windowsFile = await CreateTemporaryFile();
fileStream = await windowsFile.OpenStreamForWriteAsync();
downloader = new RestRequests.Downloader(CloudFile.Id, fileStream);
}
Status = NetworkStatus.Networking;
var progressChangedEventHandler = new RestRequests.ProgressChangedEventHandler((bytesProcessed, totalLength) =>
{
BytesDownloaded = bytesProcessed;
TotalFileLength = totalLength;
MyLogger.Assert(this.GetType() == typeof(Downloaders.FileDownloader));
OnProgressChanged(BytesDownloaded, TotalFileLength);
});
var messageAppendedEventHandler = new MessageAppendedEventHandler((msg) =>
{
OnMessageAppended("Rest: " + msg);
});
downloader.ProgressChanged += progressChangedEventHandler;
downloader.MessageAppended += messageAppendedEventHandler;
await downloader.DownloadAsync();
downloader.ProgressChanged -= progressChangedEventHandler;
downloader.MessageAppended -= messageAppendedEventHandler;
downloadAgain_index :;
switch (downloader.Status)
{
case RestRequests.Downloader.DownloadStatus.Completed :
{
fileStream.Dispose();
Status = NetworkStatus.Completed;
return;
}
case RestRequests.Downloader.DownloadStatus.ErrorNeedRestart:
{
OnMessageAppended("Error need restart");
Status = NetworkStatus.ErrorNeedRestart;
return;
}
case RestRequests.Downloader.DownloadStatus.ErrorNeedResume:
{
OnMessageAppended("Error need resume...");
goto downloadAgain_index;
}
case RestRequests.Downloader.DownloadStatus.Paused:
{
Status = NetworkStatus.Paused;
return;
}
case RestRequests.Downloader.DownloadStatus.Downloading:
case RestRequests.Downloader.DownloadStatus.NotStarted:
default: throw new Exception($"downloader.Status: {downloader.Status}");
}
}
case NetworkStatus.Completed:
case NetworkStatus.Networking:
//case NetworkStatus.Starting:
default: throw new Exception($"Status: {Status}");
}
}