public AcceptPunchOutCommandValidator(IInvitationValidator invitationValidator, IRowVersionValidator rowVersionValidator) { CascadeMode = CascadeMode.Stop; RuleFor(command => command) .MustAsync((command, cancellationToken) => BeAnExistingInvitation(command.InvitationId, cancellationToken)) .WithMessage(command => $"Invitation with this ID does not exist! Id={command.InvitationId}") .MustAsync((command, cancellationToken) => BeAnInvitationInCompletedStage(command.InvitationId, cancellationToken)) .WithMessage(command => "Invitation is not in completed stage, and thus cannot be accepted!") .Must(command => HaveAValidRowVersion(command.InvitationRowVersion)) .WithMessage(command => $"Invitation row version is not valid! InvitationRowVersion={command.InvitationRowVersion}") .Must(command => HaveAValidRowVersion(command.ParticipantRowVersion)) .WithMessage(command => $"Participant row version is not valid! ParticipantRowVersion={command.ParticipantRowVersion}") .MustAsync((command, cancellationToken) => BeAnAccepterOnIpo(command.InvitationId, cancellationToken)) .WithMessage(command => "The IPO does not have a construction company assigned to accept the IPO!") .MustAsync((command, cancellationToken) => BeTheAssignedPersonIfPersonParticipant(command.InvitationId, cancellationToken)) .WithMessage(command => "Person signing is not the construction company assigned to accept this IPO, or there is not a valid construction company on the IPO!"); RuleForEach(command => command.Participants) .MustAsync((command, participant, _, cancellationToken) => BeAnExistingParticipant(participant.Id, command.InvitationId, cancellationToken)) .WithMessage((command, participant) => $"Participant with ID does not exist on invitation! Participant={participant.Id}") .Must((command, participant) => HaveAValidRowVersion(participant.RowVersion)) .WithMessage((command, participant) => $"Participant doesn't have valid rowVersion! Participant={participant.Id}"); async Task <bool> BeAnExistingInvitation(int invitationId, CancellationToken cancellationToken) => await invitationValidator.IpoExistsAsync(invitationId, cancellationToken); async Task <bool> BeAnInvitationInCompletedStage(int invitationId, CancellationToken cancellationToken) => await invitationValidator.IpoIsInStageAsync(invitationId, IpoStatus.Completed, cancellationToken); async Task <bool> BeAnAccepterOnIpo(int invitationId, CancellationToken cancellationToken) => await invitationValidator.IpoHasAccepterAsync(invitationId, cancellationToken); async Task <bool> BeTheAssignedPersonIfPersonParticipant(int invitationId, CancellationToken cancellationToken) => await invitationValidator.CurrentUserIsValidAccepterParticipantAsync(invitationId, cancellationToken); async Task <bool> BeAnExistingParticipant(int participantId, int invitationId, CancellationToken cancellationToken) => await invitationValidator.ParticipantExistsAsync(participantId, invitationId, cancellationToken); bool HaveAValidRowVersion(string rowVersion) => rowVersionValidator.IsValid(rowVersion); }