public async Task <ICollection <Lobby> > GetArenas(DiscordGuild guild, DiscordChannel channel, DateTimeOffset queryTime, bool specialChannel)
{
var lobbies = specialChannel ?
await LobbyController.GetGlobalLobbies(_context) :
await LobbyController.GetLobbies(_context, guild, channel);
var lobbies2Delete = (from l in lobbies where l.RemovalReferenceTime.AddHours(Lobby.HourLimit) <= queryTime select l).ToArray();
if (lobbies2Delete.Length == 0)
{
return(lobbies);
}
await LobbyController.DeleteLobbies(_context, lobbies2Delete);
return(await LobbyController.GetLobbies(_context, guild, channel));
}