public async Task AddTeamAsync(AddTeam cmd)
{
// Check if the team already exists
var teamGrain = GrainFactory.GetGrain <ITeamGrain>(cmd.TeamId);
var exists = await teamGrain.TeamExistAsync();
if (!exists)
{
await PublishErrorAsync(new ErrorHasOccurred((int)Results.TeamDoesNotExist, nameof(AddTeam), cmd.TraceId, cmd.InvokerUserId));
}
// Check other preconditions
var result = ResultsUtil.Eval(
State.TournamentExists(),
State.TeamIsNotAdded(cmd.TeamId),
State.LessThanEightTeams());
var task = result switch
{
Results.Unit => PersistPublishAsync(new TeamAdded(cmd.TeamId, cmd.TournamentId, cmd.TraceId, cmd.InvokerUserId)),
Results x => PublishErrorAsync(new ErrorHasOccurred((int)x, x.ToString(), cmd.TraceId, cmd.InvokerUserId))
};
await task;
}
public async Task SetMatchResultAsync(SetMatchResult cmd)
{
var result = ResultsUtil.Eval(
State.TournamentExists(),
State.TournamentStarted(),
State.MatchIsNotDraw(cmd.Match.MatchResult),
State.MatchExistsAndIsNotPlayed(cmd.Match));
var task = result switch
{
Results.Unit => PersistPublishAsync(new MatchResultSet(cmd.TournamentId, cmd.Match, cmd.TraceId, cmd.InvokerUserId)),
Results x => PublishErrorAsync(new ErrorHasOccurred((int)x, x.ToString(), cmd.TraceId, cmd.InvokerUserId))
};
await task;
}
}
public async Task StartAsync(StartTournament cmd)
{
var result = ResultsUtil.Eval(
State.TournamentExists(),
State.TournamentDidNotStart(),
State.EightTeamsToStartTournament());
// Randomize seed
var seed = DateTime.Now.Millisecond;
var task = result switch
{
Results.Unit => PersistPublishAsync(new TournamentStarted(cmd.TournamentId, State.Teams, seed, cmd.TraceId, cmd.InvokerUserId)),
Results x => PublishErrorAsync(new ErrorHasOccurred((int)x, x.ToString(), cmd.TraceId, cmd.InvokerUserId))
};
await task;
}