public Task <IEnumerable <UnicastCommentMessage> > GetUnicastCommentMessages(Signature signature, AgreementPrivateKey agreementPrivateKey,
int messageCountUpperLimit, IEnumerable <MessageCondition> conditions)
{
if (signature == null)
{
throw new ArgumentNullException(nameof(signature));
}
if (agreementPrivateKey == null)
{
throw new ArgumentNullException(nameof(agreementPrivateKey));
}
return(Task.Run(() =>
{
try
{
var filter = new Dictionary <Signature, HashSet <DateTime> >();
{
foreach (var item in conditions)
{
filter.GetOrAdd(item.AuthorSignature, (_) => new HashSet <DateTime>()).Add(item.CreationTime);
}
}
var trustedMetadatas = new List <UnicastClue>();
{
foreach (var UnicastClue in _coreManager.GetUnicastClues(signature, "MailMessage"))
{
if (!_searchSignatures.Contains(UnicastClue.Certificate.GetSignature()))
{
continue;
}
trustedMetadatas.Add(UnicastClue);
}
trustedMetadatas.Sort((x, y) => y.CreationTime.CompareTo(x.CreationTime));
}
var results = new List <UnicastCommentMessage>();
foreach (var UnicastClue in trustedMetadatas.Take(messageCountUpperLimit))
{
if (filter.TryGetValue(UnicastClue.Certificate.GetSignature(), out var hashSet) && hashSet.Contains(UnicastClue.CreationTime))
{
continue;
}
var stream = _coreManager.VolatileGetStream(UnicastClue.Metadata, 1024 * 1024 * 1);
if (stream == null)
{
continue;
}
var result = new UnicastCommentMessage(
UnicastClue.Signature,
UnicastClue.Certificate.GetSignature(),
UnicastClue.CreationTime,
ContentConverter.FromCryptoStream <CommentContent>(stream, agreementPrivateKey, 0));
if (result.Value == null)
{
continue;
}
results.Add(result);
}
return (IEnumerable <UnicastCommentMessage>)results.ToArray();
}
catch (Exception e)
{
Log.Error(e);
}
return Array.Empty <UnicastCommentMessage>();
}));
}
