public async Task <string> HandleAsync(NewGameCommand command, CancellationToken cancellationToken)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
using (var session = _documentStore.OpenAsyncSession())
{
var gameId = _guidProvider.GenerateGuidString();
var game = _gameGenerator.GenerateGame(command.TableRows, command.TableColumns, command.MineCount);
var player1MarkTable = _playerMarksGenerator.GenerateDefaultPlayerMarksTable(command.TableRows, command.TableColumns);
var player1MarksDocumentId = session.GetPlayerMarksDocumentId(gameId, command.HostPlayerId);
var player1MarksDocument = new PlayerMarks {
Marks = player1MarkTable, Id = player1MarksDocumentId
};
// TODO: Validate that the invited player's Id is not the same as the host's Id.
game.Id = _documentStore.GetPrefixedDocumentId <Game>(gameId);
game.InvitedPlayerId = string.IsNullOrWhiteSpace(command.InvitedPlayerId) ? null : command.InvitedPlayerId;
game.Player1.PlayerId = command.HostPlayerId;
game.Player1.DisplayName = command.HostPlayerDisplayName;
await session.StoreAsync(game, cancellationToken).ConfigureAwait(false);
await session.StoreAsync(player1MarksDocument, cancellationToken).ConfigureAwait(false);
await session.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
return(gameId);
}
}
public async Task HandleAsync(JoinGameCommand command, CancellationToken cancellationToken)
{
using (var session = _documentStore.OpenAsyncSession())
{
var player2Id = command.PlayerId;
var game = await session.LoadGameAsync(command.GameId, cancellationToken).ConfigureAwait(false);
var changeVector = session.Advanced.GetChangeVectorFor(game);
if (game == null)
{
throw new GameNotFoundException();
}
if ((game.InvitedPlayerId != null && game.InvitedPlayerId != player2Id) || game.Player2.PlayerId != null || game.Player1.PlayerId == player2Id)
{
throw new ActionNotAllowedException("You are not allowed to join the requested game.");
}
var player2MarkTable = _playerMarksGenerator.GenerateDefaultPlayerMarksTable(game.Rows, game.Columns);
var player2MarksDocumentId = session.GetPlayerMarksDocumentId(command.GameId, command.PlayerId);
var player2MarksDocument = new PlayerMarks {
Marks = player2MarkTable, Id = player2MarksDocumentId
};
game.UtcDateTimeStarted = _dateTimeProvider.GetUtcDateTime();
game.Status = GameStatus.InProgress;
game.Player2.PlayerId = player2Id;
game.Player2.DisplayName = command.PlayerDisplayName;
// TODO: Investigate what exception is thrown when a concurrent update occurs (because of the changevector) and rethrow an appropriate custom exception
await session.StoreAsync(game, changeVector, game.Id, cancellationToken).ConfigureAwait(false);
await session.StoreAsync(player2MarksDocument, cancellationToken).ConfigureAwait(false);
await session.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
}
}
