package models

import (
	"errors"
	"eta_gn/eta_index_lib/global"
	"eta_gn/eta_index_lib/utils"
	"fmt"
	"github.com/shopspring/decimal"
	"gorm.io/gorm"
	"math"
	"strings"
	"time"
)

// EdbDataCalculateNhcc 拟合残差数据结构体
type EdbDataCalculateNhcc struct {
	EdbDataId     int       `gorm:"primaryKey;autoIncrement;column:edb_data_id"`
	EdbInfoId     int       `gorm:"column:edb_info_id" description:"指标ID"`
	EdbCode       string    `gorm:"column:edb_code" description:"指标编码"`
	DataTime      string    `gorm:"column:data_time" description:"数据日期"`
	Value         float64   `gorm:"column:value" description:"数据值"`
	Status        int       `gorm:"column:status" description:"状态"`
	CreateTime    time.Time `gorm:"column:create_time" description:"创建时间"`
	ModifyTime    time.Time `gorm:"column:modify_time" description:"修改时间"`
	DataTimestamp int64     `gorm:"column:data_timestamp" description:"数据日期时间戳"`
}

// NhccDate 拟合残差的开始、结束日期
type NhccDate struct {
	StartDate time.Time
	EndDate   time.Time
}

// AddCalculateNhcc 新增拟合残差数据
func AddCalculateNhcc(req *EdbInfoCalculateBatchSaveReq, firstEdbInfo, secondEdbInfo *EdbInfo, edbCode, uniqueCode string, nhccDate NhccDate, sysUserId int, sysUserRealName string) (edbInfo *EdbInfo, err error, errMsg string) {
	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()
	if req.EdbInfoId <= 0 {
		edbInfo = &EdbInfo{
			SourceName:       "拟合残差",
			Source:           utils.DATA_SOURCE_CALCULATE_NHCC,
			EdbCode:          edbCode,
			EdbName:          req.EdbName,
			EdbNameSource:    req.EdbName,
			Frequency:        req.Frequency,
			Unit:             req.Unit,
			StartDate:        firstEdbInfo.StartDate,
			EndDate:          firstEdbInfo.EndDate,
			ClassifyId:       req.ClassifyId,
			SysUserId:        sysUserId,
			SysUserRealName:  sysUserRealName,
			UniqueCode:       uniqueCode,
			CreateTime:       time.Now(),
			ModifyTime:       time.Now(),
			CalculateFormula: req.Formula,
			EdbNameEn:        req.EdbName,
			UnitEn:           req.Unit,
			EdbType:          2,
			Sort:             GetAddEdbMaxSortByClassifyId(req.ClassifyId, utils.EDB_INFO_TYPE),
		}
		tmpErr := to.Create(edbInfo).Error
		if tmpErr != nil {
			err = tmpErr
			return
		}

	} else {
		edbInfo, err = GetEdbInfoById(req.EdbInfoId)
		if err != nil {
			return
		}
		//查询
		tmpEdbInfo, tmpErr := GetEdbInfoById(edbInfo.EdbInfoId)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		tmpEdbInfo.EdbName = req.EdbName
		tmpEdbInfo.ClassifyId = req.ClassifyId
		tmpEdbInfo.Frequency = req.Frequency
		tmpEdbInfo.Unit = req.Unit
		tmpEdbInfo.CalculateFormula = req.Formula

		edbInfo = tmpEdbInfo

		//删除指标数据
		dataTableName := GetEdbDataTableName(utils.DATA_SOURCE_CALCULATE_NHCC, utils.DATA_SUB_SOURCE_EDB)
		fmt.Println("dataTableName:" + dataTableName)
		deleteSql := ` DELETE FROM %s WHERE edb_info_id=? `
		deleteSql = fmt.Sprintf(deleteSql, dataTableName)
		err = to.Exec(deleteSql, req.EdbInfoId).Error
		if err != nil {
			return
		}

		//删除指标关系
		sql := ` DELETE FROM edb_info_calculate_mapping WHERE edb_info_id=? `
		err = to.Exec(sql, edbInfo.EdbInfoId).Error
	}

	//关联关系

	var existItemA, existItemB *EdbInfoCalculateMapping
	//第一个指标
	{
		existItemA = &EdbInfoCalculateMapping{
			EdbInfoCalculateMappingId: 0,
			EdbInfoId:                 edbInfo.EdbInfoId,
			Source:                    edbInfo.Source,
			SourceName:                edbInfo.SourceName,
			EdbCode:                   edbInfo.EdbCode,
			FromEdbInfoId:             firstEdbInfo.EdbInfoId,
			FromEdbCode:               firstEdbInfo.EdbCode,
			FromEdbName:               firstEdbInfo.EdbName,
			FromSource:                firstEdbInfo.Source,
			FromSourceName:            firstEdbInfo.SourceName,
			FromTag:                   "A",
			MoveValue:                 req.EdbInfoIdArr[0].MoveValue,
			Sort:                      1,
			CreateTime:                time.Now(),
			ModifyTime:                time.Now(),
			FromSubSource:             firstEdbInfo.SubSource,
		}
		tmpErr := to.Create(existItemA).Error
		if tmpErr != nil {
			err = tmpErr
			return
		}

	}

	//第二个指标
	{
		existItemB = &EdbInfoCalculateMapping{
			EdbInfoCalculateMappingId: 0,
			EdbInfoId:                 edbInfo.EdbInfoId,
			Source:                    edbInfo.Source,
			SourceName:                edbInfo.SourceName,
			EdbCode:                   edbInfo.EdbCode,
			FromEdbInfoId:             secondEdbInfo.EdbInfoId,
			FromEdbCode:               secondEdbInfo.EdbCode,
			FromEdbName:               secondEdbInfo.EdbName,
			FromSource:                secondEdbInfo.Source,
			FromSourceName:            secondEdbInfo.SourceName,
			FromTag:                   "B",
			MoveValue:                 req.EdbInfoIdArr[1].MoveValue,
			Sort:                      1,
			CreateTime:                time.Now(),
			ModifyTime:                time.Now(),
			FromSubSource:             secondEdbInfo.SubSource,
		}
		tmpErr := to.Create(existItemB).Error
		if tmpErr != nil {
			err = tmpErr
			return
		}

	}

	//拼接数据
	err, errMsg = refreshAllCalculateNhcc(to, edbInfo, existItemA, existItemB, nhccDate)

	return
}

// EditCalculateNhcc 编辑拟合残差数据
func EditCalculateNhcc(req *EdbInfoCalculateBatchEditReq, edbInfo, firstEdbInfo, secondEdbInfo *EdbInfo, nhccDate NhccDate) (err error, errMsg string) {
	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()

	nowEdbInfo := *edbInfo // 现在的指标信息

	//修改指标信息
	edbInfo.EdbName = req.EdbName
	edbInfo.EdbNameSource = req.EdbName
	edbInfo.Frequency = req.Frequency
	edbInfo.Unit = req.Unit
	edbInfo.ClassifyId = req.ClassifyId
	edbInfo.CalculateFormula = req.Formula
	edbInfo.EdbNameEn = req.EdbNameEn
	edbInfo.UnitEn = req.UnitEn
	edbInfo.ModifyTime = time.Now()
	err = to.Model(edbInfo).Select([]string{"EdbName", "EdbNameSource", "Frequency", "Unit", "ClassifyId", "CalculateFormula", "ModifyTime", "EdbNameEn", "UnitEn"}).Updates(edbInfo).Error
	if err != nil {
		return
	}

	var existCondition string
	var existPars []interface{}
	existCondition += " AND edb_info_id=? "
	existPars = append(existPars, edbInfo.EdbInfoId)

	//查询出所有的关联指标
	existList, err := GetEdbInfoCalculateListByCondition(existCondition, existPars)
	if err != nil {
		err = fmt.Errorf("判断指标是否改变失败,Err:" + err.Error())
		return
	}

	var existItemA, existItemB *EdbInfoCalculateMapping
	for _, existItem := range existList {
		if existItem.FromTag == "A" {
			existItemA = existItem
		} else if existItem.FromTag == "B" {
			existItemB = existItem
		}
	}

	// 是否需要删除数据重新计算
	isNeedCalculateData := false

	// 如果截止日期变更，那么需要重新计算
	if req.Formula != nowEdbInfo.CalculateFormula {
		isNeedCalculateData = true
	}
	var isDeleteA, isDeleteB bool
	// 如果指标变了，那么需要删除关系
	{
		if existItemA.FromEdbInfoId != firstEdbInfo.EdbInfoId {
			//删除之前的A指标关联关系
			sql := ` DELETE FROM edb_info_calculate_mapping WHERE edb_info_id = ? and from_edb_info_id = ?`
			err = to.Exec(sql, edbInfo.EdbInfoId, existItemA.FromEdbInfoId).Error
			if err != nil {
				err = fmt.Errorf("删除指标A关联关系失败,Err:" + err.Error())
				return
			}
			isDeleteA = true
		}
		//并重新计算
		if existItemB.FromEdbInfoId != secondEdbInfo.EdbInfoId {
			//删除之前的B指标关联关系
			sql := ` DELETE FROM edb_info_calculate_mapping WHERE edb_info_id = ? and from_edb_info_id = ?`
			err = to.Exec(sql, edbInfo.EdbInfoId, existItemB.FromEdbInfoId).Error
			if err != nil {
				err = fmt.Errorf("删除指标B关联关系失败,Err:" + err.Error())
				return
			}
			isDeleteB = true
		}
	}
	//第一个指标数据
	{
		// 如果指标变了，那么需要删除关系，并重新计算
		if isDeleteA {
			//添加新的指标关系
			{
				existItemA = &EdbInfoCalculateMapping{
					EdbInfoCalculateMappingId: 0,
					EdbInfoId:                 edbInfo.EdbInfoId,
					Source:                    edbInfo.Source,
					SourceName:                edbInfo.SourceName,
					EdbCode:                   edbInfo.EdbCode,
					FromEdbInfoId:             firstEdbInfo.EdbInfoId,
					FromEdbCode:               firstEdbInfo.EdbCode,
					FromEdbName:               firstEdbInfo.EdbName,
					FromSource:                firstEdbInfo.Source,
					FromSourceName:            firstEdbInfo.SourceName,
					FromTag:                   "A",
					MoveValue:                 req.EdbInfoIdArr[0].MoveValue,
					Sort:                      1,
					CreateTime:                time.Now(),
					ModifyTime:                time.Now(),
					FromSubSource:             firstEdbInfo.SubSource,
				}
				tmpErr := to.Create(existItemA).Error
				if tmpErr != nil {
					err = tmpErr
					return
				}

				isNeedCalculateData = true
			}
		} else if existItemA.MoveValue != req.EdbInfoIdArr[0].MoveValue {
			// 如果平移天数不一致的话，
			existItemA.ModifyTime = time.Now()
			existItemA.MoveValue = req.EdbInfoIdArr[0].MoveValue
			err = to.Model(existItemA).Select([]string{"ModifyTime", "MoveValue"}).Updates(existItemA).Error
			if err != nil {
				return
			}
			isNeedCalculateData = true
		}
	}

	//第二个指标数据
	{
		// 如果指标变了，那么需要删除关系，并重新计算
		if isDeleteB {
			// 添加新的指标关联关系
			existItemB = &EdbInfoCalculateMapping{
				EdbInfoCalculateMappingId: 0,
				EdbInfoId:                 edbInfo.EdbInfoId,
				Source:                    edbInfo.Source,
				SourceName:                edbInfo.SourceName,
				EdbCode:                   edbInfo.EdbCode,
				FromEdbInfoId:             secondEdbInfo.EdbInfoId,
				FromEdbCode:               secondEdbInfo.EdbCode,
				FromEdbName:               secondEdbInfo.EdbName,
				FromSource:                secondEdbInfo.Source,
				FromSourceName:            secondEdbInfo.SourceName,
				FromTag:                   "B",
				MoveValue:                 req.EdbInfoIdArr[1].MoveValue,
				Sort:                      2,
				CreateTime:                time.Now(),
				ModifyTime:                time.Now(),
				FromSubSource:             secondEdbInfo.SubSource,
			}
			tmpErr := to.Create(existItemB).Error
			if tmpErr != nil {
				err = tmpErr
				return
			}

			isNeedCalculateData = true
		} else if existItemB.MoveValue != req.EdbInfoIdArr[1].MoveValue {
			// 如果平移天数不一致的话，
			existItemB.ModifyTime = time.Now()
			existItemB.MoveValue = req.EdbInfoIdArr[1].MoveValue
			err = to.Model(existItemB).Select([]string{"ModifyTime", "MoveValue"}).Updates(existItemB).Error
			if err != nil {
				return
			}
			isNeedCalculateData = true
		}
	}

	// 如果需要重新计算，那么先删除所有的指标数据，然后再重新计算
	if isNeedCalculateData {
		// 删除之前所有的指标数据

		tableName := GetEdbDataTableName(edbInfo.Source, edbInfo.SubSource)
		sql := fmt.Sprintf(` DELETE FROM %s WHERE edb_info_id = ? `, tableName)
		err = to.Exec(sql, edbInfo.EdbInfoId).Error
		if err != nil {
			err = fmt.Errorf("删除历史数据失败,Err:" + err.Error())
			return
		}

		err, errMsg = refreshAllCalculateNhcc(to, edbInfo, existItemA, existItemB, nhccDate)
	}

	return
}

// RefreshAllCalculateNhcc 刷新所有 拟合残差 数据
func RefreshAllCalculateNhcc(edbInfo *EdbInfo) (err error) {
	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()
	//查询关联指标信息
	var existCondition string
	var existPars []interface{}
	existCondition += " AND edb_info_id=? "
	existPars = append(existPars, edbInfo.EdbInfoId)
	existList, err := GetEdbInfoCalculateListByCondition(existCondition, existPars)
	if err != nil {
		err = fmt.Errorf("判断指标是否改变失败,Err:" + err.Error())
		return
	}

	var existItemA, existItemB *EdbInfoCalculateMapping
	for _, existItem := range existList {
		if existItem.FromTag == "A" {
			existItemA = existItem
		} else if existItem.FromTag == "B" {
			existItemB = existItem
		}
	}

	timeList := strings.Split(edbInfo.CalculateFormula, ",")
	startDate, err := time.ParseInLocation(utils.FormatDate, timeList[0], time.Local)
	if err != nil {
		return
	}
	endDate, err := time.ParseInLocation(utils.FormatDate, timeList[1], time.Local)
	if err != nil {
		return
	}
	if endDate.Sub(startDate).Hours() < 48 {
		return
	}
	nhccDate := NhccDate{
		StartDate: startDate,
		EndDate:   endDate,
	}
	// 刷新数据
	err, _ = refreshAllCalculateNhcc(to, edbInfo, existItemA, existItemB, nhccDate)

	return
}

// refreshAllCalculateNhcc 刷新所有 拟合残差 数据
func refreshAllCalculateNhcc(to *gorm.DB, edbInfo *EdbInfo, existItemA, existItemB *EdbInfoCalculateMapping, nhccDate NhccDate) (err error, errMsg string) {
	//查询当前指标现有的数据
	var condition string
	var pars []interface{}
	condition += " AND edb_info_id=? "
	pars = append(pars, edbInfo.EdbInfoId)

	//获取年化指标所有数据
	existDataList, err := GetAllEdbDataListByTo(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource)
	//var dataList []*EdbDataCalculateNhcc
	//sql := ` SELECT * FROM edb_data_calculate_nhcc WHERE edb_info_id=? ORDER BY data_time DESC `
	//err = to.Raw(sql, edbInfo.EdbInfoId).Scan(&dataList).Error
	if err != nil {
		return
	}
	var dateArr []string
	dataMap := make(map[string]*EdbData)
	removeDataTimeMap := make(map[string]int) //需要移除的日期数据
	for _, v := range existDataList {
		dateArr = append(dateArr, v.DataTime)
		dataMap[v.DataTime] = v
		removeDataTimeMap[v.DataTime] = 1
	}

	addDataList := make([]*EdbDataCalculateNhcc, 0)

	aDataList, secondDataList, aDataMap, bDataMap, nhccDate, err, errMsg := getNhccData(to, existItemA, existItemB, nhccDate)
	if err != nil {
		return
	}

	// 计算线性方程公式
	var a, b float64
	{
		coordinateData := make([]utils.Coordinate, 0)
		for i := nhccDate.StartDate; i.Before(nhccDate.EndDate) || i.Equal(nhccDate.EndDate); i = i.AddDate(0, 0, 1) {
			dateStr := i.Format(utils.FormatDate)
			xValue, ok := aDataMap[dateStr]
			if !ok {
				errMsg = "指标A日期：" + dateStr + "数据异常，导致计算线性方程公式失败"
				err = errors.New(errMsg)
				return
			}
			yValue, ok := bDataMap[dateStr]
			if !ok {
				errMsg = "指标B日期：" + dateStr + "数据异常，导致计算线性方程公式失败"
				err = errors.New(errMsg)
				return
			}
			tmpCoordinate := utils.Coordinate{
				X: xValue,
				Y: yValue,
			}
			coordinateData = append(coordinateData, tmpCoordinate)
		}
		a, b = utils.GetLinearResult(coordinateData)
	}

	if math.IsNaN(a) || math.IsNaN(b) {
		errMsg = "线性方程公式生成失败"
		err = errors.New(errMsg)
		return
	}
	//fmt.Println("a:", a, ";======b:", b)

	//计算B’
	newBDataMap := make(map[string]float64)
	{
		//B’=aA+b
		aDecimal := decimal.NewFromFloat(a)
		bDecimal := decimal.NewFromFloat(b)
		for _, aData := range aDataList {
			xDecimal := decimal.NewFromFloat(aData.Value)
			val, _ := aDecimal.Mul(xDecimal).Add(bDecimal).Round(4).Float64()
			newBDataMap[aData.DataTime] = val
		}

	}

	// Delta=B-B‘
	for _, bData := range secondDataList {
		currDate := bData.DataTime
		//校验待删除日期数据里面是否存在该元素，如果存在的话，那么移除该元素
		if _, ok := removeDataTimeMap[currDate]; ok {
			delete(removeDataTimeMap, currDate)
		}

		b2Val, ok := newBDataMap[currDate]
		if !ok {
			// 如果B`不存在数据，那么就退出当前循环
			continue
		}
		bDecimal := decimal.NewFromFloat(bData.Value)
		b2Decimal := decimal.NewFromFloat(b2Val)

		valDeci := bDecimal.Sub(b2Decimal)
		val, _ := valDeci.Round(4).Float64()

		// 判断之前有没有该数据
		existData, ok := dataMap[currDate]
		if !ok { //不存在那么就添加吧
			currentDate, _ := time.ParseInLocation(utils.FormatDate, currDate, time.Local)
			timestamp := currentDate.UnixNano() / 1e6
			edbDataNhcc := &EdbDataCalculateNhcc{
				EdbInfoId:     edbInfo.EdbInfoId,
				EdbCode:       edbInfo.EdbCode,
				DataTime:      currDate,
				Value:         val,
				Status:        1,
				CreateTime:    time.Now(),
				ModifyTime:    time.Now(),
				DataTimestamp: timestamp,
			}
			addDataList = append(addDataList, edbDataNhcc)
		} else {
			// 如果有的话，还需要判断值是否一致，一致则不处理，不一致则修改

			tmpExistVal, tmpErr := decimal.NewFromString(existData.Value)
			if tmpErr != nil {
				err = tmpErr
				return
			}

			if !tmpExistVal.Equal(valDeci) {
				err = ModifyEdbDataById(edbInfo.Source, edbInfo.SubSource, existData.EdbDataId, valDeci.String())
				if err != nil {
					return
				}
			}
		}
	}

	//删除已经不存在的拟合残差指标数据（由于该指标当日的数据删除了）
	{
		removeDateList := make([]string, 0)
		for dateTime := range removeDataTimeMap {
			removeDateList = append(removeDateList, dateTime)
		}
		removeNum := len(removeDateList)
		if removeNum > 0 {
			//如果拼接指标变更了，那么需要删除所有的指标数据
			tableName := GetEdbDataTableName(edbInfo.Source, edbInfo.SubSource)
			sql := fmt.Sprintf(` DELETE FROM %s WHERE edb_info_id = ? and data_time in (`+utils.GetOrmInReplace(removeNum)+`) `, tableName)
			err = to.Exec(sql, edbInfo.EdbInfoId, removeDateList).Error
			if err != nil {
				err = fmt.Errorf("删除不存在的拟合残差指标数据失败,Err:" + err.Error())
				return
			}
		}
	}

	//数据入库
	if len(addDataList) > 0 {
		tmpAddDataList := make([]*EdbDataCalculateNhcc, 0)
		i := 0
		for _, v := range addDataList {
			tmpAddDataList = append(tmpAddDataList, v)
			i++
			if i >= 500 {
				err = to.CreateInBatches(tmpAddDataList, 500).Error
				if err != nil {
					return
				}
				i = 0
				tmpAddDataList = make([]*EdbDataCalculateNhcc, 0)
			}
		}

		if len(tmpAddDataList) > 0 {
			err = to.CreateInBatches(tmpAddDataList, 500).Error
			if err != nil {
				return
			}
		}
	}
	return
}

// CalculateComputeCorrelation 计算相关性结果
func CalculateComputeCorrelation(req *EdbInfoCalculateBatchSaveReq, firstEdbInfo, secondEdbInfo *EdbInfo, nhccDate NhccDate) (a, b, r float64, err error, errMsg string) {
	var existItemA, existItemB *EdbInfoCalculateMapping
	//第一个指标
	{
		existItemA = &EdbInfoCalculateMapping{
			EdbInfoCalculateMappingId: 0,
			FromEdbInfoId:             firstEdbInfo.EdbInfoId,
			FromEdbCode:               firstEdbInfo.EdbCode,
			FromEdbName:               firstEdbInfo.EdbName,
			FromSource:                firstEdbInfo.Source,
			FromSourceName:            firstEdbInfo.SourceName,
			FromTag:                   "A",
			MoveValue:                 req.EdbInfoIdArr[0].MoveValue,
			Sort:                      1,
			CreateTime:                time.Now(),
			ModifyTime:                time.Now(),
			FromSubSource:             firstEdbInfo.SubSource,
		}
	}

	//第二个指标
	{
		existItemB = &EdbInfoCalculateMapping{
			EdbInfoCalculateMappingId: 0,
			FromEdbInfoId:             secondEdbInfo.EdbInfoId,
			FromEdbCode:               secondEdbInfo.EdbCode,
			FromEdbName:               secondEdbInfo.EdbName,
			FromSource:                secondEdbInfo.Source,
			FromSourceName:            secondEdbInfo.SourceName,
			FromTag:                   "B",
			MoveValue:                 req.EdbInfoIdArr[1].MoveValue,
			Sort:                      1,
			CreateTime:                time.Now(),
			ModifyTime:                time.Now(),
			FromSubSource:             secondEdbInfo.SubSource,
		}
	}

	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()
	// 获取相关数据
	_, _, aDataMap, bDataMap, nhccDate, err, errMsg := getNhccData(to, existItemA, existItemB, nhccDate)
	if err != nil {
		return
	}

	// 计算相关性
	coordinateData := make([]utils.Coordinate, 0)
	for i := nhccDate.StartDate; i.Before(nhccDate.EndDate) || i.Equal(nhccDate.EndDate); i = i.AddDate(0, 0, 1) {
		dateStr := i.Format(utils.FormatDate)
		xValue, ok := aDataMap[dateStr]
		if !ok {
			errMsg = "指标A日期：" + dateStr + "数据异常，导致计算线性方程公式失败"
			err = errors.New(errMsg)
			return
		}
		yValue, ok := bDataMap[dateStr]
		if !ok {
			errMsg = "指标B日期：" + dateStr + "数据异常，导致计算线性方程公式失败"
			err = errors.New(errMsg)
			return
		}
		tmpCoordinate := utils.Coordinate{
			X: xValue,
			Y: yValue,
		}
		coordinateData = append(coordinateData, tmpCoordinate)
	}
	// 计算线性方程公式
	a, b = utils.GetLinearResult(coordinateData)

	// 计算相关性
	r = utils.ComputeCorrelation(coordinateData)

	return
}

// getNhccData 获取拟合残差需要的数据
func getNhccData(to *gorm.DB, existItemA, existItemB *EdbInfoCalculateMapping, nhccDate NhccDate) (aDataList []EdbInfoSearchData, secondDataList []*EdbInfoSearchData, aDataMap, bDataMap map[string]float64, newNhccDate NhccDate, err error, errMsg string) {
	newNhccDate = nhccDate
	//第一个指标
	aDataList = make([]EdbInfoSearchData, 0)
	aDataMap = make(map[string]float64)
	{

		//第一个指标的数据列表
		firstDataList, tmpErr := GetEdbDataListAllByTo(to, existItemA.FromSource, existItemA.FromSubSource, FindEdbDataListAllCond{
			EdbInfoId: existItemA.FromEdbInfoId,
		}, 0)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		aDataList, aDataMap = handleNhccData(firstDataList, existItemA.MoveValue)

	}

	//第二个指标
	bDataList := make([]EdbInfoSearchData, 0)
	secondDataList = make([]*EdbInfoSearchData, 0)
	bDataMap = make(map[string]float64)
	{

		//第二个指标的数据列表
		secondDataList, err = GetEdbDataListAllByTo(to, existItemB.FromSource, existItemB.FromSubSource, FindEdbDataListAllCond{
			EdbInfoId: existItemB.FromEdbInfoId,
		}, 0)
		if err != nil {
			return
		}
		bDataList, bDataMap = handleNhccData(secondDataList, existItemB.MoveValue)
	}

	if len(aDataList) <= 0 {
		errMsg = "指标A没有数据"
		err = errors.New(errMsg)
		return
	}
	if len(bDataList) <= 0 {
		errMsg = "指标B没有数据"
		err = errors.New(errMsg)
		return
	}
	// 拟合残差计算的开始日期判断
	{
		startAData := aDataList[0]
		tmpStartDate, tmpErr := time.ParseInLocation(utils.FormatDate, startAData.DataTime, time.Local)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		// 如果A指标的最新数据日期晚于拟合残差的结束日期，那么就用A指标的最新数据日期
		if tmpStartDate.After(newNhccDate.StartDate) {
			newNhccDate.StartDate = tmpStartDate
		}
		startBData := bDataList[0]
		tmpStartDate, tmpErr = time.ParseInLocation(utils.FormatDate, startBData.DataTime, time.Local)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		// 如果B指标的最新数据日期晚于拟合残差的结束日期，那么就用A指标的最新数据日期
		if tmpStartDate.After(newNhccDate.StartDate) {
			newNhccDate.StartDate = tmpStartDate
		}
	}
	// 拟合残差计算的结束日期判断
	{
		endAData := aDataList[len(aDataList)-1]
		tmpEndDate, tmpErr := time.ParseInLocation(utils.FormatDate, endAData.DataTime, time.Local)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		// 如果A指标的最新数据日期早于拟合残差的结束日期，那么就用A指标的最新数据日期
		if tmpEndDate.Before(newNhccDate.EndDate) {
			newNhccDate.EndDate = tmpEndDate
		}
		endBData := bDataList[len(bDataList)-1]
		tmpEndDate, tmpErr = time.ParseInLocation(utils.FormatDate, endBData.DataTime, time.Local)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		// 如果B指标的最新数据日期早于拟合残差的结束日期，那么就用A指标的最新数据日期
		if tmpEndDate.Before(newNhccDate.EndDate) {
			newNhccDate.EndDate = tmpEndDate
		}
	}

	return
}

// handleNhccData 处理拟合残差需要的数据
func handleNhccData(dataList []*EdbInfoSearchData, moveDay int) (newDataList []EdbInfoSearchData, dateDataMap map[string]float64) {
	dateMap := make(map[time.Time]float64)
	var minDate, maxDate time.Time
	dateDataMap = make(map[string]float64)

	for _, v := range dataList {
		currDate, _ := time.ParseInLocation(utils.FormatDate, v.DataTime, time.Local)
		if minDate.IsZero() || currDate.Before(minDate) {
			minDate = currDate
		}
		if maxDate.IsZero() || currDate.After(maxDate) {
			maxDate = currDate
		}
		dateMap[currDate] = v.Value
	}

	// 处理领先、滞后数据
	newDateMap := make(map[time.Time]float64)
	for currDate, value := range dateMap {
		newDate := currDate.AddDate(0, 0, moveDay)
		newDateMap[newDate] = value
	}

	// 开始平移天数
	minDate = minDate.AddDate(0, 0, moveDay)
	maxDate = maxDate.AddDate(0, 0, moveDay)

	// 计算最早日期与最晚日期之间的相差天数
	dayNum := utils.GetTimeSubDay(minDate, maxDate)

	// 将最早日期与最晚日期之间不存在的日期进行数据补全（按前一期数据补充）
	for i := 0; i <= dayNum; i++ {
		currDate := minDate.AddDate(0, 0, i)
		tmpValue, ok := newDateMap[currDate]
		if !ok {
			// 万一没有数据,那么就过滤当次循环
			if len(newDataList) <= 0 {
				continue
			}
			//找不到数据，那么就用前面的数据吧
			tmpValue = newDataList[len(newDataList)-1].Value
		}
		tmpData := EdbInfoSearchData{
			//EdbDataId: 0,
			DataTime: currDate.Format(utils.FormatDate),
			Value:    tmpValue,
		}
		dateDataMap[tmpData.DataTime] = tmpData.Value
		newDataList = append(newDataList, tmpData)
	}

	return
}