public Task <RollListDto <Message> > GetMessagesOfLobbyAsync(Guid lobbyId, Guid?oldestId,
int requestedCount)
{
var lobby = lobbyStorage.GetLobby(lobbyId);
if (!lobby.Contains(identityService.GetCurrentUserName()))
{
throw new UnauthorizedAccessException("Not authorized to read the messages of this lobby.");
}
List <Message>?results = null;
if (oldestId.HasValue)
{
var oldest = lobbyStorage.GetMessages(lobbyId).Single(x => x.Id == oldestId);
results = lobbyStorage.GetMessages(lobbyId)
.Where(x => x.Timestamp < oldest.Timestamp)
.OrderByDescending(x => x.Timestamp)
.Take(requestedCount)
.OrderBy(x => x.Timestamp)
.ToList();
}
else
{
results = lobbyStorage.GetMessages(lobbyId)
.OrderByDescending(x => x.Timestamp)
.Take(requestedCount)
.OrderBy(x => x.Timestamp)
.ToList();
}
var hasMore = results.Count == requestedCount && lobbyStorage.GetMessages(lobbyId)
.Any(x => x.Timestamp < results.First().Timestamp);
return(Task.FromResult(new RollListDto <Message>
{
HasMoreLeft = hasMore,
Data = results
}));
}
public Task <List <Message> > GetMessages(Guid lobbyId)
{
return(Task.FromResult(lobbyStorage.GetMessages(lobbyId)));
}