egg_system_rules/rule/egg_energy/available_green_energy_settlement.go

package egg_energy

import (
	"code.fnuoos.com/EggPlanet/egg_models.git/src/model"
	"code.fnuoos.com/EggPlanet/egg_system_rules.git/rule/egg_energy/md"
	egg_system_rules "code.fnuoos.com/EggPlanet/egg_system_rules.git/utils"
	"encoding/json"
	"errors"
	"fmt"
	"github.com/shopspring/decimal"
)

// CalcPriceIncreaseFormula 计算涨价公式(【用户资金 ÷（用户资金+星球价值）÷ 现行数量】 = 用户获得蛋蛋能量个数)
func CalcPriceIncreaseFormula(userAmountValue string, eggEnergyCoreData *model.EggEnergyCoreData) (err error, resp md.CalcPriceIncreaseFormulaResp) {
	userAmount, _ := decimal.NewFromString(userAmountValue)                               //用户资金
	nowPrice, _ := decimal.NewFromString(eggEnergyCoreData.NowPrice)                      //当前价格
	nowEnergyTotalNums, _ := decimal.NewFromString(eggEnergyCoreData.NowEnergyTotalNums)  //现行数量
	planetTotalValue, _ := decimal.NewFromString(eggEnergyCoreData.PlanetTotalValue)      //星球价值
	afterPrice := (planetTotalValue.Add(userAmount)).Div(nowEnergyTotalNums).Truncate(16) //涨价后的价格
	fmt.Println("userAmount:::", userAmount.String())
	fmt.Println("nowEnergyTotalNums:::", nowEnergyTotalNums.String())
	fmt.Println("planetTotalValue:::", planetTotalValue.String())
	fmt.Println("afterPrice:::", afterPrice.String())
	getEggEnergyNumsValue := userAmount.Div(afterPrice).Truncate(8)            //用户得到绿色能量个数
	afterEnergyTotalNumsValue := nowEnergyTotalNums.Add(getEggEnergyNumsValue) //变更后-现行数量
	afterPlanetTotalValue := afterEnergyTotalNumsValue.Mul(afterPrice)         //变更后-星球价值
	fmt.Println("afterPlanetTotalValue:::", afterPlanetTotalValue.String())

	resp.GetEggEnergyNums = getEggEnergyNumsValue.String()
	resp.BeforePrice = nowPrice.String()
	resp.AfterPrice = afterPrice.String()
	resp.BeforePlanetTotalValue = eggEnergyCoreData.PlanetTotalValue
	resp.AfterPlanetTotalValue = afterPlanetTotalValue.Truncate(8).String()
	resp.BeforeEnergyTotalNums = eggEnergyCoreData.NowEnergyTotalNums
	resp.AfterEnergyTotalNums = afterEnergyTotalNumsValue.Truncate(8).String()
	egg_system_rules.FilePutContents("CalcPriceIncreaseFormula", egg_system_rules.SerializeStr(resp))
	return
}

// CalcPriceReductionFormula 计算降价公式(【用户需兑换蛋蛋能量数量*｛星球价值 ÷（用户需兑换蛋蛋能量数量+现行数量｝ *（1 - 扣比例50% ~ 23%） = 用户获得钱)
func CalcPriceReductionFormula(userExchangeNumsValue string, eggEnergyCoreData *model.EggEnergyCoreData, levelId string, eggEnergyBasicSetting model.EggEnergyBasicSetting) (err error, resp md.CalcPriceReductionFormulaResp) {
	exchangeAccountBalanceFee := decimal.NewFromInt(0)                  //兑换手续费
	userExchangeNums, _ := decimal.NewFromString(userExchangeNumsValue) //用户兑换绿色能量
	if levelId != "" {
		var vipEquitySetting []*md.VipEquitySettingStruct
		err = json.Unmarshal([]byte(eggEnergyBasicSetting.VipEquitySetting), &vipEquitySetting)
		if err != nil {
			fmt.Println("err:::::", err)
			return
		}
		var exchangeAccountBalanceFeeValue string
		for _, v := range vipEquitySetting {
			if v.VipLevelId == levelId {
				exchangeAccountBalanceFeeValue = v.ExchangeAccountBalanceFee
			}
		}
		if exchangeAccountBalanceFeeValue == "" {
			err = errors.New("未查询到当前会员等级兑换余额手续费")
			return
		}
		exchangeAccountBalanceFee, _ = decimal.NewFromString(exchangeAccountBalanceFeeValue) //兑换手续费
	}

	decimalRate := decimal.NewFromInt(100)                                                    //百分比
	nowEnergyTotalNums, _ := decimal.NewFromString(eggEnergyCoreData.NowEnergyTotalNums)      //现行数量
	planetTotalValue, _ := decimal.NewFromString(eggEnergyCoreData.PlanetTotalValue)          //星球价值
	afterPrice := planetTotalValue.Div(userExchangeNums.Add(nowEnergyTotalNums)).Truncate(16) //降价后的价格

	greenEnergyValues := userExchangeNums.Mul(afterPrice)                                      //能量价值
	greenEnergyFeeValues := greenEnergyValues.Mul(exchangeAccountBalanceFee.Div(decimalRate))  //能量个数扣除手续费价值
	resp.GetEggEnergyAmount = greenEnergyValues.Sub(greenEnergyFeeValues).Truncate(2).String() //用户实际得到的钱
	amountFee := userExchangeNums.Mul(exchangeAccountBalanceFee.Div(decimalRate))              //能量手续费
	resp.AmountFee = amountFee.Truncate(8).String()

	afterEnergyTotalNumsValue := nowEnergyTotalNums.Sub(userExchangeNums.Sub(amountFee)) //变更后-现行数量
	afterPlanetTotalValue := afterEnergyTotalNumsValue.Mul(afterPrice)                   //变更后-星球价值

	resp.BeforePrice = eggEnergyCoreData.NowPrice
	resp.AfterPrice = afterPrice.String()
	resp.BeforePlanetTotalValue = eggEnergyCoreData.PlanetTotalValue
	resp.AfterPlanetTotalValue = afterPlanetTotalValue.String()
	resp.BeforeEnergyTotalNums = eggEnergyCoreData.NowEnergyTotalNums
	resp.AfterEnergyTotalNums = afterEnergyTotalNumsValue.String()

	egg_system_rules.FilePutContents("CalcPriceReductionFormula", egg_system_rules.SerializeStr(resp))
	return
}