public Task GoBackAsync()
{
return(this.DoReadWriteActionOnCurrentTournamentAsync(
async currentTournament =>
{
bool sendMessage = true;
switch (currentTournament.Stage)
{
case TournamentStage.SetRoundRobins:
currentTournament.TryClearReaders();
break;
case TournamentStage.AddTeams:
currentTournament.RoundRobinsCount = 0;
break;
case TournamentStage.AddPlayers:
currentTournament.TryClearTeams();
currentTournament.ClearSymbolsToTeam();
List <Task <IMessage> > getJoinTeamMessagesTasks = new List <Task <IMessage> >();
foreach (ulong id in currentTournament.JoinTeamMessageIds)
{
getJoinTeamMessagesTasks.Add(this.Context.Channel.GetMessageAsync(id));
}
IMessage[] joinTeamMessages = await Task.WhenAll(getJoinTeamMessagesTasks);
await Task.WhenAll(joinTeamMessages
.Select(message => this.Context.Channel.DeleteMessageAsync(message)));
currentTournament.ClearJoinTeamMessageIds();
break;
case TournamentStage.Rebracketing:
// Don't send the message about the tournament starting again
sendMessage = false;
break;
default:
// Nothing to go back to, so do nothing.
this.Logger.Debug("Could not go back on stage {stage}", currentTournament.Stage);
await this.SendChannelMessage(BotStrings.CannotGoBack(currentTournament.Stage));
return;
}
TournamentStage previousStage = currentTournament.Stage == TournamentStage.Finals ?
TournamentStage.RunningTournament :
currentTournament.Stage - 1;
await this.UpdateStageAsync(currentTournament, previousStage, sendMessage);
}));
}
