// upload.getFile#e3a6cfb5 location:InputFileLocation offset:int limit:int = upload.File;
public async Task <UploadFileConstructor> GetFile(FileLocationConstructor fileLocation, int offset, int limit)
{
var request = new GetFileRequest(new InputFileLocationConstructor(fileLocation.volumeId, fileLocation.localId, fileLocation.secret), offset, limit);
await SendRpcRequestInSeparateSession(fileLocation.dcId, request);
// only single implementation available
return((UploadFileConstructor)request.file);
}
static TgLocation MapLocation(FileLocationConstructor location)
{
if (location == null)
{
return(null);
}
return(new TgLocation
{
VolumeId = location.volume_id,
LocalId = location.local_id,
Secret = location.secret,
InputType = typeof(InputFileLocationConstructor)
});
}
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();
}
}
private string FileLocationToCachePath(FileLocationConstructor fileLocation)
{
return(String.Format("cache/{0}.{1}.{2}.jpg", fileLocation.volume_id, fileLocation.local_id, fileLocation.secret));
}
private string FileLocationToCachePath(FileLocationConstructor fileLocation) {
return String.Format("cache/{0}.{1}.{2}.jpg", fileLocation.volume_id, fileLocation.local_id, fileLocation.secret);
}
