public static IEnumerable <IEvent> Handle(CreateGame command, params IEvent[] events)
=> new[] {
new GameCreated
{
GameId = command.GameId,
PlayerId = command.PlayerId,
Title = command.Title,
Rounds = command.Rounds,
Created = DateTime.UtcNow,
Status = GameStatus.ReadyToStart
}
};
public async Task Dispatch(ICommand command)
{
async Task subsciption(IEvent[] events)
{
_ = await store.AppendToStreamAsync("games", events);
await pub(events);
};
Func <InMemoryEventStore, Task> commandHandler = command switch
{
CreateGame cmd => (store) => Execute(store, $"game-{cmd.GameId}", events => Game.Handle(cmd, events).ToArray(), subsciption),
JoinGame cmd => (store) => Execute <GameState>(store, $"game-{cmd.GameId}", state => Game.Handle(cmd, state).ToArray(), subsciption),
_ => (store) => throw new ArgumentException($"Could not dispatch {command.GetType()}")
};
await commandHandler(store);
}