public Book AddBook(Book book)
{
book.Id = Environment.TickCount;
Books.Add(book);
return book;
}
public Book UpdateBook(Book book)
{
var persistedBook = Books.Single(b => b.Id == book.Id);
Books.Remove(persistedBook);
Books.Add(book);
return book;
}
public void updateBook(Book book)
{
var newBook = _repository.UpdateBook(book);
Clients.bookUpdated(newBook);
}