public bool DeleteBook(int authorId, int id)
{
ValidateAuthor(authorId);
var bookToDelete = authorsRepository.GetBooks().SingleOrDefault(b => b.Id == id);
if (bookToDelete == null)
{
throw new NotFoundException("invalid book to delete");
}
return(authorsRepository.DeleteBook(id));
}
public IEnumerable <Author> GetAuthors(string orderBy, bool showBooks)
{
orderBy = orderBy.ToLower();
if (!allowedOrderByQueries.Contains(orderBy))
{
throw new InvalidOperationException($"Invalid \" {orderBy} \" orderBy query param. The allowed values are {string.Join(",", allowedOrderByQueries)}");
}
var authors = authorsRepository.GetAuthors();
foreach (var author in authors)
{
if (showBooks)
{
author.books = authorsRepository.GetBooks().Where(b => b.AuthorId == author.Id);
}
else
{
author.books = null;
}
}
switch (orderBy)
{
case "id":
return(authors.OrderBy(a => a.Id));
case "name":
return(authors.OrderBy(a => a.Name));
case "lastname":
return(authors.OrderBy(a => a.LastName));
case "nationallity":
return(authors.OrderBy(a => a.Name));
default:
return(authors);
}
}
