public void ReturnBook(Guid bookId)
{
var book = _bookStorage.GetById(bookId);
book.CheckIn();
var loan = _loanStorage.GetByBookId(bookId);
var patron = _patronStorage.GetById(loan.Patron.Id);
patron.CheckInBook();
loan.IsReturned = true;
}
public void ReturnBook(Guid bookId, Guid userId)
{
var book = _bookStorage.GetById(bookId, userId);
book.CheckIn();
_bookStorage.Update(book);
var loan = _loanStorage.GetByBookId(bookId, userId);
var patron = _patronStorage.GetById(loan.Patron.Id, userId);
patron.CheckInBook();
_patronStorage.Update(patron);
loan.IsReturned = true;
_loanStorage.Update(loan);
}