package com.nq.utils;

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

public class TradeFeeUtil {

    public static final BigDecimal BUY_FEE_RATE = new BigDecimal("0.03");

    private TradeFeeUtil() {
    }

    public static BigDecimal calcBuyFee(BigDecimal buyAmt) {
        if (buyAmt == null) {
            return BigDecimal.ZERO;
        }
        return buyAmt.multiply(BUY_FEE_RATE).setScale(2, RoundingMode.HALF_UP);
    }

    public static BigDecimal calcBuyFeeByNotional(BigDecimal notional, Integer lever) {
        return calcBuyFee(notional);
    }

    public static BigDecimal calcBuyDebit(BigDecimal margin, BigDecimal fee) {
        BigDecimal marginAmt = margin == null ? BigDecimal.ZERO : margin;
        BigDecimal feeAmt = fee == null ? BigDecimal.ZERO : fee;
        return marginAmt.add(feeAmt).setScale(2, RoundingMode.HALF_UP);
    }
}