public bool EditBook(int bookId, Book newBook)
        {
            var bookToEdit = database.books.Where((book) => book.Id == bookId).First();

            if (bookToEdit == null)
            {
                return(false);
            }

            database.Entry(bookToEdit).CurrentValues.SetValues(DBToLibrary.LibraryToBook(newBook));
            database.SaveChanges();
            return(true);
        }
 public bool AddNewBook(Book book)
 {
     database.books.Add(DBToLibrary.LibraryToBook(book));
     database.SaveChanges();
     return(true);
 }