private IEnumerable <Book> GetUserBooks(int userId)
{
var booksIds = _rentalRepository.GetUserBooksIds(userId);
return(booksIds.Select(bookId => _inventoryRepository.GetBookById(bookId)).ToList());
}
public Book GetBookById(int bookId)
{
return(_inventoryRepository.GetBookById(bookId));
}
public Book RentBook(Borrow borrow)
{
_rentalRepository.RentBook(borrow);
return(_inventoryRepository.GetBookById(borrow.BookId));
}