package models

import (
	"errors"
	"eta/eta_index_lib/utils"
	"fmt"
	"github.com/beego/beego/v2/client/orm"
	"github.com/shopspring/decimal"
	"strconv"
	"strings"
	"time"
)

// SavePredictCalculateCjjx 超季节性
func SavePredictCalculateCjjx(req *EdbInfoCalculateBatchSaveReq, fromEdbInfo *EdbInfo, edbCode, uniqueCode string, sysUserId int, sysUserRealName string, formulaInt int) (edbInfo *EdbInfo, latestDateStr string, latestValue float64, err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("SavePredictCalculateCjjx,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()
	fmt.Println("req.EdbInfoId:", req.EdbInfoId)
	if req.EdbInfoId <= 0 {
		edbInfo = new(EdbInfo)
		edbInfo.EdbInfoType = 1
		edbInfo.Source = utils.DATA_SOURCE_PREDICT_CALCULATE_CJJX
		edbInfo.SourceName = "预测超季节性"
		edbInfo.EdbCode = edbCode
		edbInfo.EdbName = req.EdbName
		edbInfo.EdbNameSource = req.EdbName
		edbInfo.Frequency = req.Frequency
		edbInfo.Unit = req.Unit
		edbInfo.ClassifyId = req.ClassifyId
		edbInfo.SysUserId = sysUserId
		edbInfo.SysUserRealName = sysUserRealName
		edbInfo.CreateTime = time.Now()
		edbInfo.ModifyTime = time.Now()
		edbInfo.UniqueCode = uniqueCode
		edbInfo.CalculateFormula = req.Formula
		edbInfo.Calendar = req.Calendar
		edbInfo.EdbType = 2
		newEdbInfoId, tmpErr := to.Insert(edbInfo)
		if tmpErr != nil {
			err = tmpErr
			return
		}
		edbInfo.EdbInfoId = int(newEdbInfoId)

		//关联关系
		{
			calculateMappingItem := new(EdbInfoCalculateMapping)
			calculateMappingItem.CreateTime = time.Now()
			calculateMappingItem.ModifyTime = time.Now()
			calculateMappingItem.Sort = 1
			calculateMappingItem.EdbCode = edbCode
			calculateMappingItem.EdbInfoId = edbInfo.EdbInfoId
			calculateMappingItem.FromEdbInfoId = fromEdbInfo.EdbInfoId
			calculateMappingItem.FromEdbCode = fromEdbInfo.EdbCode
			calculateMappingItem.FromEdbName = fromEdbInfo.EdbName
			calculateMappingItem.FromSource = fromEdbInfo.Source
			calculateMappingItem.FromSourceName = fromEdbInfo.SourceName
			calculateMappingItem.FromTag = ""
			calculateMappingItem.Source = edbInfo.Source
			calculateMappingItem.SourceName = edbInfo.SourceName
			_, err = to.Insert(calculateMappingItem)
			if err != nil {
				return
			}
		}
	} else {
		edbInfo, err = GetEdbInfoById(req.EdbInfoId)
		if err != nil {
			return
		}
		oldCalculateFormula := edbInfo.CalculateFormula //原先的n值
		oldCalendar := edbInfo.Calendar                 //原先的公历、农历
		edbInfo, err = GetEdbInfoById(req.EdbInfoId)
		if err != nil {
			return
		}
		latestDateStr = edbInfo.LatestDate
		latestValue = edbInfo.LatestValue
		//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.Calendar = req.Calendar
		edbInfo.ModifyTime = time.Now()
		_, err = to.Update(edbInfo, "EdbName", "EdbNameSource", "Frequency", "Unit", "ClassifyId", "CalculateFormula", "Calendar", "ModifyTime")
		if err != nil {
			return
		}

		//判断计算指标是否被更换
		var existCondition string
		var existPars []interface{}
		existCondition += " AND edb_info_id=? AND from_edb_info_id=? "
		existPars = append(existPars, edbInfo.EdbInfoId, req.FromEdbInfoId)
		var count int
		count, err = GetEdbInfoCalculateCountByCondition(existCondition, existPars)
		if err != nil {
			err = errors.New("判断指标是否改变失败,Err:" + err.Error())
			return
		}
		if count > 0 && oldCalculateFormula == req.Formula && oldCalendar == req.Calendar { // 指标未被替换，同时N值未修改，同时公历/农历未变更，无需重新计算
			return
		}

		// 指标被替换，或者N值未修改，那么需要重新计算数据
		//基础指标被替换了，需要删除原先的 计算指标关联的，基础指标的关联关系
		if count <= 0 {
			// 需要删除原先的 计算指标关联的，基础指标的关联关系
			sql := ` DELETE FROM edb_info_calculate_mapping WHERE edb_info_id = ? `
			_, err = to.Raw(sql, edbInfo.EdbInfoId).Exec()
			if err != nil {
				return
			}

			// 添加新的关联关系
			{
				calculateMappingItem := &EdbInfoCalculateMapping{
					EdbInfoCalculateMappingId: 0,
					EdbInfoId:                 edbInfo.EdbInfoId,
					Source:                    utils.DATA_SOURCE_PREDICT_CALCULATE_CJJX,
					SourceName:                "预测超季节性",
					EdbCode:                   edbInfo.EdbCode,
					FromEdbInfoId:             fromEdbInfo.EdbInfoId,
					FromEdbCode:               fromEdbInfo.EdbCode,
					FromEdbName:               fromEdbInfo.EdbName,
					FromSource:                fromEdbInfo.Source,
					FromSourceName:            fromEdbInfo.SourceName,
					FromTag:                   "",
					Sort:                      1,
					CreateTime:                time.Now(),
					ModifyTime:                time.Now(),
				}
				_, err = to.Insert(calculateMappingItem)
				if err != nil {
					return
				}
			}
		}

		//清空原有数据
		tableName := GetEdbDataTableName(edbInfo.Source)
		sql := fmt.Sprintf(` DELETE FROM %s WHERE edb_info_id = ? `, tableName)
		_, err = to.Raw(sql, edbInfo.EdbInfoId).Exec()
		if err != nil {
			return
		}

	}

	//计算数据
	latestDateStr, latestValue, err = refreshAllPredictCalculateCjjx(to, edbInfo.EdbInfoId, edbInfo.Source, fromEdbInfo, edbInfo.EdbCode, "", "", edbInfo.Calendar, formulaInt)

	return
}

// RefreshAllPredictCalculateCjjx 刷新全部超季节性数据
func RefreshAllPredictCalculateCjjx(edbInfoId, source int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate, calendar string, formulaInt int) (latestDateStr string, latestValue float64, err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("RefreshAllPredictCalculateCjjx,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()

	// 重新计算
	latestDateStr, latestValue, err = refreshAllPredictCalculateCjjx(to, edbInfoId, source, fromEdbInfo, edbCode, startDate, endDate, calendar, formulaInt)

	return
}

// refreshAllPredictCalculateCjjx 刷新全部超季节性数据
func refreshAllPredictCalculateCjjx(to orm.TxOrmer, edbInfoId, source int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate, calendar string, formulaInt int) (latestDateStr string, latestValue float64, err error) {
	edbInfoIdStr := strconv.Itoa(edbInfoId)
	// 获取关联指标数据
	dataList, err := GetPredictEdbDataListAllByStartDate(fromEdbInfo, 1, "")
	if err != nil {
		return
	}
	latestDateStr = fromEdbInfo.LatestDate
	var dateArr []string
	dataMap := make(map[string]*EdbInfoSearchData)
	for _, v := range dataList {
		dateArr = append(dateArr, v.DataTime)
		dataMap[v.DataTime] = v
	}

	// 通过插值法补全所有数据(包含周末)
	handleDataMap := make(map[string]float64)
	_, err = HandleDataByLinearRegression(dataList, handleDataMap)
	if err != nil {
		return
	}

	//获取指标所有数据
	existDataList := make([]*EdbData, 0)
	dataTableName := GetEdbDataTableName(source)
	sql := `SELECT * FROM %s WHERE edb_info_id=? `
	sql = fmt.Sprintf(sql, dataTableName)
	_, err = to.Raw(sql, edbInfoId).QueryRows(&existDataList)
	if err != nil {
		return
	}
	existDataMap := make(map[string]string)
	removeDataTimeMap := make(map[string]int) //需要移除的日期数据
	for _, v := range existDataList {
		existDataMap[edbCode+v.DataTime] = v.Value
		removeDataTimeMap[v.DataTime] = 1
	}

	addSql := ` INSERT INTO edb_data_predict_calculate_cjjx(edb_info_id,edb_code,data_time,value,create_time,modify_time,data_timestamp) values `
	var isAdd bool
	//日度/周度/季度/月度
	//isCompatibility := false //是否向上下兼容35天
	//if utils.InArrayByStr([]string{"日度", "周度", "季度", "月度"}, fromEdbInfo.Frequency) {
	//	isCompatibility = true
	//}

	// 每个年份的日期数据需要平移的天数
	moveDayMap := make(map[int]int, 0) // 每个年份的春节公历
	var lastDataDay time.Time
	if len(dataList) > 0 {
		lastDataDay, _ = time.ParseInLocation(utils.FormatDate, dataList[0].DataTime, time.Local)
	}
	for _, av := range dateArr {
		currentItem := dataMap[av]
		if currentItem != nil {
			pastValueList := make([]float64, 0) // 过去几期的数据
			//当前日期
			currentDate, tmpErr := time.ParseInLocation(utils.FormatDate, av, time.Local)
			if tmpErr != nil {
				err = tmpErr
				return
			}
			pastValueList = append(pastValueList, currentItem.Value)

			for i := 1; i < formulaInt; i++ {
				//前几年当天公历的日期
				hisoryPreDate := currentDate.AddDate(-i, 0, 0)
				moveDay := 0
				if calendar == "农历" {
					if tmpMoveDay, ok := moveDayMap[hisoryPreDate.Year()]; !ok {
						moveDay, err = getMoveDay(lastDataDay, hisoryPreDate)
						if err != nil {
							return
						}
					} else {
						moveDay = tmpMoveDay
					}

					// 移动天数到对应农历 的 公历 日期
					hisoryPreDate = hisoryPreDate.AddDate(0, 0, moveDay)
				}

				historyPreDateStr := hisoryPreDate.Format(utils.FormatDate)
				if tmpValue, ok := handleDataMap[historyPreDateStr]; ok { //上一年同期找到
					pastValueList = append(pastValueList, tmpValue)
				}
				//else if isCompatibility { // 如果需要兼容上下35天
				//	nextDateDay := hisoryPreDate
				//	preDateDay := hisoryPreDate
				//	for i := 0; i < 35; i++ {
				//		nextDateDayStr := nextDateDay.Format(utils.FormatDate)
				//		if findItem, ok := dataMap[nextDateDayStr]; ok { //上一年同期->下一个月找到
				//			pastValueList = append(pastValueList, findItem.Value)
				//			break
				//		} else {
				//			preDateDayStr := preDateDay.Format(utils.FormatDate)
				//			if findItem, ok := dataMap[preDateDayStr]; ok { //上一年同期->上一个月找到
				//				pastValueList = append(pastValueList, findItem.Value)
				//				break
				//			}
				//		}
				//		nextDateDay = nextDateDay.AddDate(0, 0, 1)
				//		preDateDay = preDateDay.AddDate(0, 0, -1)
				//	}
				//}
				//if av == "2023-09-29" {
				//	fmt.Println(moveDay)
				//}
			}
			//if av == "2023-09-29" {
			//	fmt.Println(pastValueList)
			//}

			if len(pastValueList) == formulaInt {
				delete(removeDataTimeMap, av) //将待删除的日期给移除

				val := CjjxSub(currentItem.Value, pastValueList)
				if existVal, ok := existDataMap[edbCode+av]; !ok {
					timestamp := currentDate.UnixNano() / 1e6
					timestampStr := fmt.Sprintf("%d", timestamp)
					addSql += GetAddSql(edbInfoIdStr, edbCode, av, timestampStr, val)
					isAdd = true
				} else {
					var existValDecimal decimal.Decimal
					existValDecimal, err = decimal.NewFromString(existVal)
					if err != nil {
						return
					}
					existStr := existValDecimal.String()
					if existStr != val {
						sql = ` UPDATE %s SET value=?,modify_time=NOW() WHERE edb_info_id=? AND data_time=? `
						sql = fmt.Sprintf(sql, dataTableName)
						_, err = to.Raw(sql, val, edbInfoId, av).Exec()
						if err != nil {
							return
						}
					}
				}
			}
			existDataMap[edbCode+av] = av
		}
	}

	//删除已经不存在的超季节性指标数据（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(source)
			sql := fmt.Sprintf(` DELETE FROM %s WHERE edb_info_id = ? and data_time in (`+utils.GetOrmInReplace(removeNum)+`) `, tableName)
			_, err = to.Raw(sql, edbInfoId, removeDateList).Exec()
			if err != nil {
				err = fmt.Errorf("删除不存在的超季节性指标数据失败,Err:" + err.Error())
				return
			}
		}
	}

	if isAdd {
		addSql = strings.TrimRight(addSql, ",")
		_, err = to.Raw(addSql).Exec()
		if err != nil {
			return
		}
	}

	//确定最终值
	var finalLast EdbInfoSearchData
	sql = ` SELECT data_time , value FROM edb_data_predict_calculate_cjjx WHERE edb_info_id=? and data_time<=? ORDER BY data_time DESC `
	tmpErr := to.Raw(sql, edbInfoId, latestDateStr).QueryRow(&finalLast)
	if tmpErr != nil {
		if tmpErr.Error() != utils.ErrNoRow() {
			err = tmpErr
		} else {
			latestDateStr = "0000-00-00"
		}
		return
	} else {
		latestDateStr = finalLast.DataTime
		latestValue = finalLast.Value
	}
	return
}