public Book Add(string title, string name)
{
var author = authorRepository.AuthorWithName(name);
var book = new Book(title, author);
return(bookRepository.Add(book));
}
public Book EditBookWithTitle(string title, string newAuthor)
{
var book = bookRepository.WithTitle(title);
if (book != null)
{
// Remove existing book
bookRepository.Delete(book.Title);
// Create new one with same title and different author
var author = authorRepository.AuthorWithName(newAuthor);
var newBook = new Book(title, author);
bookRepository.Add(newBook);
return(newBook);
}
else
{
return(null);
}
}
