1、阶段减仓

services/binanceservice/orderservice.go

@@ -1,10 +1,15 @@
 package binanceservice
 
 import (
+	"fmt"
 	"go-admin/app/admin/models"
 	DbModels "go-admin/app/admin/models"
+	"go-admin/pkg/utility"
+	"go-admin/pkg/utility/snowflakehelper"
+	"time"
 
 	"github.com/go-admin-team/go-admin-core/logger"
+	"github.com/jinzhu/copier"
 	"github.com/shopspring/decimal"
 	"gorm.io/gorm"
 )
@@ -170,3 +175,68 @@ func GetChildTpOrder(db *gorm.DB, pid int) (int, error) {
 
 	return int(count), nil
 }
+
+// 创建减仓后减仓单
+func CreateReduceReduceOrder(db *gorm.DB, pid int, price, num decimal.Decimal, amountDigit int) (models.LinePreOrder, error) {
+	var preOrder models.LinePreOrder
+	var result models.LinePreOrder
+	var ext models.LinePreOrderExt
+
+	if err := db.Model(&models.LinePreOrder{}).Preload("Childs").Where("id =? ", pid).First(&preOrder).Error; err != nil {
+		return preOrder, err
+	}
+
+	if err := db.Model(&models.LinePreOrderExt{}).Where("order_id =? ", pid).Find(&ext).Error; err != nil {
+		return preOrder, err
+	}
+
+	copier.Copy(&result, &preOrder)
+
+	result.Id = 0
+	result.OrderSn = utility.Int64ToString(snowflakehelper.GetOrderId())
+	result.Status = 0
+	result.CreatedAt = time.Now()
+	result.TriggerTime = nil
+	result.UpdatedAt = time.Now()
+	result.BuyPrice = decimal.Zero.String()
+	result.Price = price.String()
+	result.Num = num.String()
+
+	for index := range result.Childs {
+		result.Childs[index].Id = 0
+		result.Childs[index].OrderSn = utility.Int64ToString(snowflakehelper.GetOrderId())
+		result.Childs[index].Status = 0
+		result.Childs[index].CreatedAt = time.Now()
+		result.Childs[index].TriggerTime = nil
+		result.Childs[index].UpdatedAt = time.Now()
+		result.Childs[index].BuyPrice = decimal.Zero.String()
+		var pricePercent decimal.Decimal
+
+		if result.Childs[index].OrderType == 1 && ext.TakeProfitRatio.Cmp(decimal.Zero) > 0 {
+			// 减仓单卖出
+			if preOrder.Site == "SELL" {
+				pricePercent = decimal.NewFromInt(100).Add(ext.TakeProfitRatio).Div(decimal.NewFromInt(100))
+			} else {
+				pricePercent = decimal.NewFromInt(100).Sub(ext.TakeProfitRatio).Div(decimal.NewFromInt(100))
+			}
+
+		} else if result.Childs[index].OrderType == 2 && ext.StopLossRatio.Cmp(decimal.Zero) > 0 {
+			if preOrder.Site == "SELL" {
+				pricePercent = decimal.NewFromInt(100).Sub(ext.StopLossRatio).Div(decimal.NewFromInt(100))
+			} else {
+				pricePercent = decimal.NewFromInt(100).Add(ext.StopLossRatio).Div(decimal.NewFromInt(100))
+			}
+		}
+
+		//重新计算止盈止损价
+		if pricePercent.Cmp(decimal.Zero) > 0 {
+			result.Childs[index].Price = price.Mul(pricePercent).Truncate(int32(amountDigit)).String()
+		}
+	}
+
+	if err := db.Create(&result).Error; err != nil {
+		return result, fmt.Errorf("复制减仓单失败：pid:%d err:%v", pid, err)
+	}
+
+	return result, nil
+}