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"
	"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(8) //涨价后的价格
	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

	resp.GetEggEnergyNums = getEggEnergyNumsValue.String()
	resp.BeforePrice = nowPrice.String()
	resp.AfterPrice = afterPrice.String()
	resp.BeforePlanetTotalValue = eggEnergyCoreData.PlanetTotalValue
	resp.AfterPlanetTotalValue = afterPlanetTotalValue.String()
	resp.BeforeEnergyTotalNums = eggEnergyCoreData.NowEnergyTotalNums
	resp.AfterEnergyTotalNums = afterEnergyTotalNumsValue.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) (err error, resp md.CalcPriceReductionFormulaResp) {
	userExchangeNums, _ := decimal.NewFromString(userExchangeNumsValue)                  //用户兑换绿色能量
	nowEnergyTotalNums, _ := decimal.NewFromString(eggEnergyCoreData.NowEnergyTotalNums) //现行数量
	planetTotalValue, _ := decimal.NewFromString(eggEnergyCoreData.PlanetTotalValue)     //星球价值
	afterPrice := planetTotalValue.Div(userExchangeNums.Add(nowEnergyTotalNums))         //降价后的价格
	greenEnergyValues := userExchangeNums.Mul(afterPrice)                                //用户获得的钱
	afterEnergyTotalNumsValue := nowEnergyTotalNums.Sub(userExchangeNums)                //变更后-现行数量
	afterPlanetTotalValue := afterEnergyTotalNumsValue.Mul(afterPrice)                   //变更后-星球价值

	resp.GetEggEnergyAmount = greenEnergyValues.Truncate(8).String()
	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
}