public RescheduleCommandValidator(
IProjectValidator projectValidator,
ITagValidator tagValidator,
IRowVersionValidator rowVersionValidator)
{
CascadeMode = CascadeMode.Stop;
RuleFor(command => command.Tags)
.Must(ids => ids != null && ids.Any())
.WithMessage("At least 1 tag must be given!")
.Must(BeUniqueTags)
.WithMessage("Tags must be unique!")
.MustAsync(BeInSameProjectAsync)
.WithMessage("Tags must be in same project!")
.MustAsync(NotBeAClosedProjectForTagAsync)
.WithMessage("Project is closed!");
RuleFor(command => command.Weeks)
.InclusiveBetween(1, MaxRescheduleWeeks)
.WithMessage($"Rescheduling must be in range of 1 to {MaxRescheduleWeeks} week(s)!");
When(command => command.Tags.Any() && BeUniqueTags(command.Tags), () =>
{
RuleForEach(command => command.Tags)
.MustAsync((_, tag, __, token) => BeAnExistingTagAsync(tag.Id, token))
.WithMessage((_, tag) => $"Tag doesn't exist! Tag={tag.Id}")
.MustAsync((_, tag, __, token) => NotBeAVoidedTagAsync(tag.Id, token))
.WithMessage((_, tag) => $"Tag is voided! Tag={tag.Id}")
.MustAsync((_, tag, __, token) => IsReadyToBeRescheduledAsync(tag.Id, token))
.WithMessage((_, tag) => $"Tag can not be rescheduled! Tag={tag.Id}")
.Must(tag => HaveAValidRowVersion(tag.RowVersion))
.WithMessage((_, tag) => $"Not a valid row version! Row version={tag.RowVersion}");
});
bool BeUniqueTags(IEnumerable <IdAndRowVersion> tags)
{
var ids = tags.Select(x => x.Id).ToList();
return(ids.Distinct().Count() == ids.Count);
}
async Task <bool> BeInSameProjectAsync(IEnumerable <IdAndRowVersion> tags, CancellationToken token)
=> await projectValidator.AllTagsInSameProjectAsync(tags.Select(t => t.Id), token);
async Task <bool> NotBeAClosedProjectForTagAsync(IEnumerable <IdAndRowVersion> tags, CancellationToken token)
=> !await projectValidator.IsClosedForTagAsync(tags.First().Id, token);
async Task <bool> BeAnExistingTagAsync(int tagId, CancellationToken token)
=> await tagValidator.ExistsAsync(tagId, token);
async Task <bool> NotBeAVoidedTagAsync(int tagId, CancellationToken token)
=> !await tagValidator.IsVoidedAsync(tagId, token);
async Task <bool> IsReadyToBeRescheduledAsync(int tagId, CancellationToken token)
=> await tagValidator.IsReadyToBeRescheduledAsync(tagId, token);
bool HaveAValidRowVersion(string rowVersion)
=> rowVersionValidator.IsValid(rowVersion);
}