public NewsItemAuthors CreateNewsItemAuthor(int authorId, int newsItemId)
{
if (_authorRepository.GetAuthorById(authorId) != null)
{
if (_newsItemRepository.GetNewsItemById(newsItemId) != null)
{
if (!_authorRepository.CheckNewsItemAuthorRelation(authorId, newsItemId))
{
return(_authorRepository.CreateNewsItemAuthor(authorId, newsItemId));
}
throw new ResourceAlreadyExistsException();
}
throw new ResourceNotFoundException($"News item with id {newsItemId} was not found.");
}
throw new ResourceNotFoundException($"Author with id {authorId} was not found.");
}
