public void UpdateBook(int bookId, UpdateBookData data)
{
var book = _booksRepository.GetBook(bookId);
if (book == null)
{
throw new ArgumentException($"Cannot edit book {bookId} cause it is not exist!");
}
UpdateBookData(book, data);
_booksRepository.UpdateBook(book);
}
private void UpdateBookData(Book book, UpdateBookData data)
{
UpdateValue((value) => book.Title = value, data.Title);
UpdateValue((value) => book.ISBN = value, data.ISBN);
UpdateValue((value) => book.PageNumber = (int)value, data.PageNumber);
UpdateValue((value) => book.Publisher = value, data.Publisher);
UpdateValue(() => book.PublicationDate = new DateTime(data.PublishYear.Value, 1, 1),
data.PublishYear);
if (data.AuthorIds != null)
{
var authors = _authorsRepository.GetAuthors(data.AuthorIds);
book.SetAuthors(authors);
}
}