public async Task <string> GetFile(FileLocation fileLocation)
{
logger.debug("Getting file {0}", fileLocation);
if (fileLocation.Constructor == Constructor.fileLocation)
{
FileLocationConstructor location = (FileLocationConstructor)fileLocation;
string filePath = FileLocationToCachePath(location);
using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication()) {
if (!storage.DirectoryExists("cache"))
{
storage.CreateDirectory("cache");
}
if (storage.FileExists(filePath))
{
logger.debug("Getting file {0} from cache", filePath);
return(filePath);
}
TLApi api = await session.GetFileSession(location.dc_id);
logger.debug("Got file session for dc {0}", location.dc_id);
Upload_fileConstructor file = (Upload_fileConstructor)await api.upload_getFile(TL.inputFileLocation(location.volume_id, location.local_id, location.secret), 0, int.MaxValue);
logger.debug("File constructor found");
using (Stream fileStream = new IsolatedStorageFileStream(filePath, FileMode.OpenOrCreate,
FileAccess.Write, storage)) {
await fileStream.WriteAsync(file.bytes, 0, file.bytes.Length);
}
logger.debug("File saved successfully");
return(filePath);
}
}
else
{
throw new MTProtoFileUnavailableException();
}
}
