public DeleteActionAttachmentCommandValidator(
IProjectValidator projectValidator,
ITagValidator tagValidator,
IActionValidator actionValidator,
IRowVersionValidator rowVersionValidator)
{
CascadeMode = CascadeMode.Stop;
RuleFor(command => command)
.MustAsync((command, token) => NotBeAClosedProjectForTagAsync(command.TagId, token))
.WithMessage(command => $"Project for tag is closed! Tag={command.TagId}")
.MustAsync(BeAnExistingActionAttachmentAsync)
.WithMessage(command => "Tag, action and/or attachment doesn't exist!")
.MustAsync((command, token) => NotBeAVoidedTagAsync(command.TagId, token))
.WithMessage(command => $"Tag is voided! Tag={command.TagId}")
.MustAsync((command, token) => NotBeAClosedActionAsync(command.ActionId, token))
.WithMessage(command => $"Action is closed! Action={command.ActionId}")
.Must(command => HaveAValidRowVersion(command.RowVersion))
.WithMessage(command => $"Not a valid row version! Row version={command.RowVersion}");
async Task <bool> NotBeAClosedProjectForTagAsync(int tagId, CancellationToken token)
=> !await projectValidator.IsClosedForTagAsync(tagId, token);
async Task <bool> BeAnExistingActionAttachmentAsync(DeleteActionAttachmentCommand command, CancellationToken token)
=> await tagValidator.ExistsActionAttachmentAsync(command.TagId, command.ActionId, command.AttachmentId, token);
async Task <bool> NotBeAVoidedTagAsync(int tagId, CancellationToken token)
=> !await tagValidator.IsVoidedAsync(tagId, token);
async Task <bool> NotBeAClosedActionAsync(int actionId, CancellationToken token)
=> !await actionValidator.IsClosedAsync(actionId, token);
bool HaveAValidRowVersion(string rowVersion)
=> rowVersionValidator.IsValid(rowVersion);
}