PaymentTotal.h

//Austin Nguyen
#ifndef PAYMENTTOTAL_H
#define PAYMENTTOTAL_H

#include "Payment.h"
#include <string>

class PaymentTotal
{
public:
    // Calculates number of nights between check-in and check-out
    static int   calculateNights(const Payment& p);

    // Calculates final total (base rate * nights * discount * tax * currency)
    static float calculateFinalTotal(const Payment& p);

    // Full processing, sets status + total price inside Payment object
    static void  processPayment(Payment& p);

private:
    // Converts YYYY-MM-DD string into separate year/month/day variables
    static void extractDate(const std::string& date, int& y, int& m, int& d);

    // Converts year-month-day to a rough day count (simple formula)
    static int dateToDays(int y, int m, int d);
};

#endif