async Task <TransactionDownloadData <T> > DownloadTransactionAttachement <T>(TransactionDownloadData <T> transactionData, bool commit) where T : Operation
{
var transaction = transactionData.Transaction;
var transactionId = transaction.OperationId;
if (transactionData.HasAttachements)
{
if (transactionData.AttachementsState != TransactionAttachementsState.Ok)
{
var attachementStorage = _attachementsStorage.Value;
if (!attachementStorage.ContainsIndex(transactionId))
{
var attachementData = new TransactionAttachements(transactionId);
var attachementTransaction = transaction as AttachementDataTransaction;
var count = attachementTransaction.Items.Count;
for (var i = 0; i < attachementTransaction.Items.Count; i++)
{
var item = attachementTransaction.Items[i];
var data = (await Client.DownloadAttachement(attachementTransaction, i)).Data;
if (data != null)
{
attachementData.AddData(item.Name, data);
}
}
if (count == attachementData.Count)
{
attachementStorage.AddEntry(transactionId, attachementData.ToByteArray());
if (commit)
{
attachementStorage.Commit();
}
transactionData.UpdateAttachement(TransactionAttachementsState.Ok, attachementData);
}
else
{
transactionData.UpdateAttachement(TransactionAttachementsState.DownloadFailed, null);
}
}
else
{
var data = attachementStorage.GetBlockData(transactionId);
if (data != null)
{
try
{
transactionData.UpdateAttachement(TransactionAttachementsState.Ok, new TransactionAttachements(new Unpacker(data)));
}
catch { }
}
}
}
}
return(transactionData);
}
public void AddDecryptedAttachement(string name, byte[] data)
{
if (_decryptedData == null)
{
_decryptedData = new TransactionAttachements(Transaction.OperationId);
}
_decryptedData.AddData(name, data);
}