package com.yami.trading.util;

/**
 * @program: trading-order-master
 * @description: 强平价格计算
 * @create: 2025-01-15 15:56
 **/
public class StrongLevelCalculationUtil {

    public static void main(String[] args) {
        // 给定参数
        double marginBalance = 968.802; // 保证金余额
        double faceValue = 0.01; // 合约面值（固定面值不能调整）
        double contractQuantity = 1; // 合约张数  张数=保证金/开仓均价*面值/杠杆
        double openingPrice = 96880.2; // 开仓均价
        double maintenanceMarginRate = 0.004; // 维持保证金率（固定不变）
        double feeRate = 0.0005; // 手续费率  根据实际设置

        // 计算强平价
        double liquidationPrice = calculateLiquidationPrice(marginBalance, faceValue, contractQuantity,
                openingPrice, maintenanceMarginRate, feeRate);

        // 输出结果
        System.out.println("多仓预估强平价: " + liquidationPrice);

        // 计算空仓预估强平价
        double liquidationPrice2 = calculateEmptyLiquidationPrice(marginBalance, faceValue, contractQuantity,
                openingPrice, maintenanceMarginRate, feeRate);

        // 输出结果
        System.out.println("空仓预估强平价: " + liquidationPrice2);
    }

    /**
     * 多仓强平价格计算 多仓预估强平价 =(保证金余额-面值 *|张数|*开仓均价)/(面值*张数|*(维持保证金率+手续费率 -1));
     * @param marginBalance 保证金余额
     * @param faceValue 合约面值
     * @param contractQuantity 合约张数
     * @param openingPrice 开仓均价
     * @param maintenanceMarginRate 维持保证金率
     * @param feeRate 手续费率
     * @return
     */
    public static double calculateLiquidationPrice(double marginBalance, double faceValue, double contractQuantity,
                                                   double openingPrice, double maintenanceMarginRate, double feeRate){
        // 计算分子部分
        double numerator = marginBalance - (faceValue * contractQuantity * openingPrice);

        // 计算分母部分
        double denominator = faceValue * contractQuantity * (maintenanceMarginRate + feeRate - 1);

        // 计算强平价
        return numerator / denominator;
    }


    /**
     *  空仓强平价格计算   空仓预估强平价 =(保证金余额+面值 *|张数|*开仓均价)/(面值*|张数|*(维持金率+王续费率 +1))
     * @param marginBalance 保证金余额
     * @param faceValue 合约面值
     * @param contractQuantity 合约张数
     * @param openingPrice 开仓均价
     * @param maintenanceMarginRate 维持保证金率
     * @param feeRate 手续费率
     * @return
     */
    public static double calculateEmptyLiquidationPrice(double marginBalance, double faceValue, double contractQuantity,
                                                        double openingPrice, double maintenanceMarginRate, double feeRate){
        // 计算分子部分
        double numerator = marginBalance + (faceValue * contractQuantity * openingPrice);

        // 计算分母部分
        double denominator = faceValue * contractQuantity * (maintenanceMarginRate + feeRate + 1);

        // 计算空仓预估强平价
        return numerator / denominator;
    }
}