public DuplicateAreaTagCommandValidator(ITagValidator tagValidator, IProjectValidator projectValidator)
{
CascadeMode = CascadeMode.Stop;
RuleFor(command => command)
.MustAsync((command, token) => NotBeAClosedProjectForTagAsync(command.TagId, token))
.WithMessage(command => $"Project is closed! Tag={command.TagId}")
.MustAsync((command, token) => BeAnExistingSourceTagAsync(command.TagId, token))
.WithMessage(command => $"Tag doesn't exist! Tag={command.TagId}")
.MustAsync((command, token) => NotBeAnExistingTagWithinProjectAsync(command.GetTagNo(), command.TagId, token))
.WithMessage(command => $"Tag already exists in scope for project! Tag={command.GetTagNo()}")
.MustAsync((command, token) => IsReadyToBeDuplicatedAsync(command.TagId, token))
.WithMessage(command => $"Tag can not be duplicated! Tag={command.TagId}");
async Task <bool> NotBeAClosedProjectForTagAsync(int tagId, CancellationToken token)
=> !await projectValidator.IsClosedForTagAsync(tagId, token);
async Task <bool> BeAnExistingSourceTagAsync(int tagId, CancellationToken token)
=> await tagValidator.ExistsAsync(tagId, token);
async Task <bool> NotBeAnExistingTagWithinProjectAsync(string tagNo, int tagId, CancellationToken token)
=> !await tagValidator.ExistsAsync(tagNo, tagId, token);
async Task <bool> IsReadyToBeDuplicatedAsync(int tagId, CancellationToken token)
=> await tagValidator.IsReadyToBeDuplicatedAsync(tagId, token);
}