public async Task <DownloadResponse> RemoteDownloadLatest(Action <DownloadInfo> callbackProgress = null)
{
var response = new DownloadResponse();
if (!RemoteAuthenticate())
{
return(response);
}
bool success = await RemoteUpdateFiles();
if (!success)
{
return(response);
}
// get last modifier build id
var file = GetLatestBuild();
if (file == null)
{
return(response);
}
var request = _driveService.Files.Get(file.Id);
request.MediaDownloader.ChunkSize = _settingsProvider.Current.DownloadChunkSize;
await using var streamMemory = new MemoryStream();
// progress callback
if (callbackProgress != null)
{
request.MediaDownloader.ProgressChanged += progress =>
{
var info = new DownloadInfo()
{
FileSize = (long)file.FileSize,
Progress = progress,
};
callbackProgress.Invoke(info);
};
}
await request.MediaDownloader.DownloadAsync(file.DownloadUrl, streamMemory);
// copy used part of the buffer
var buffer = streamMemory.GetBuffer();
var bytes = new byte[streamMemory.Length];
for (int i = 0; i < bytes.Length; i++)
{
bytes[i] = buffer[i];
}
response.Success = true;
response.Bytes = bytes;
response.File = file;
return(response);
}
public async Task <DownloadResponse> Download(Action <DownloadInfo> callbackProgress = null)
{
DownloadResponse response = new DownloadResponse();
response = await RemoteDownloadLatest(callbackProgress);
if (response.Success && response.Bytes.Length > 0)
{
var dir = $"{_settingsProvider.Current.DirectoryDownload}/";
var path = $"{dir}/{response.File.Title}";
if (_fileService.TryCreateDirectory(dir))
{
_fileService.TrySave(path, response.Bytes);
response.PathDownload = path;
}
}
return(response);
}