public double ComputeNecessaryFee(BookCopy bookCopy, TransactionInfo bookTransInfo)
{
var bookInfo = _BookCopyService.GetBookInfo(bookCopy);
if (bookInfo == null)
{
throw new InvalidOperationException("Book copy has no known book information.");
}
var section = _SectionService.GetBookSection(bookInfo);
if (section == null)
{
throw new InvalidOperationException("The book does not belong to a section.");
}
if (DateTime.Now.Date <= bookTransInfo.ExpectedReturnDate.Date)
{
return(0);
}
return((DateTime.Now.Date - bookTransInfo.ExpectedReturnDate.Date).Days * section.LateReturningFee);
}
public ReturnBookIgnorePaymentTransaction(BookCopy bookCopy, TransactionInfo transInfo)
: base(bookCopy)
{
_LastTransaction = transInfo;
}
public JustReturnBookTransaction(BookCopy bookCopy, TransactionInfo transInfo)
: base(bookCopy)
{
_LastTransaction = transInfo;
_PaymentService = new PaymentService();
}
public int CompareTo(TransactionInfo other)
{
return(this.BorrowDate.Value.CompareTo(other.BorrowDate));
}