LongDeposit

package com.epam.rd.qa.aggregation;

import java.math.BigDecimal;
import java.math.RoundingMode;

public class LongDeposit extends Deposit {
    public LongDeposit(BigDecimal amount, int period) {
        super(amount, period);
    }

    @Override
    public BigDecimal income() {
        BigDecimal totalIncome = BigDecimal.ZERO;
        BigDecimal currentAmount = getAmount();
        for (int i = 1; i <= getPeriod(); i++) {
            BigDecimal rawInterest;
            BigDecimal interest;
            if (i > 6) {
                rawInterest = currentAmount.multiply(BigDecimal.valueOf(0.15));
            } else {
                rawInterest = BigDecimal.ZERO; // No interest for the first 6 months
            }
            interest = rawInterest.setScale(2, RoundingMode.HALF_EVEN);

            totalIncome = totalIncome.add(interest);
            currentAmount = currentAmount.add(interest);
        }
        return totalIncome;
    }

}