package models

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

// AddCalculateCjjx 超季节性
func AddCalculateCjjx(req *EdbInfoCalculateBatchSaveReq, fromEdbInfo *EdbInfo, edbCode, uniqueCode string, sysUserId int, sysUserRealName string, formulaInt int) (edbInfo *EdbInfo, err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("AddCalculateCjjx,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()
	fmt.Println("req.EdbInfoId:", req.EdbInfoId)
	if req.EdbInfoId <= 0 {
		edbInfo = new(EdbInfo)
		edbInfo.Source = utils.DATA_SOURCE_CALCULATE_CJJX
		edbInfo.SourceName = "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.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
		}
		dataTableName := GetEdbDataTableName(utils.DATA_SOURCE_CALCULATE_CJJX)
		fmt.Println("dataTableName:", dataTableName)
		deleteSql := ` DELETE FROM %s WHERE edb_info_id=? `
		deleteSql = fmt.Sprintf(deleteSql, dataTableName)
		_, err = to.Raw(deleteSql, req.EdbInfoId).Exec()
		if err != nil {
			return
		}
	}

	//计算数据
	err = refreshAllCalculateCjjx(to, edbInfo.EdbInfoId, edbInfo.Source, fromEdbInfo, edbInfo.EdbCode, "", "", formulaInt)

	return
}

// EditCalculateCjjx 超季节性
func EditCalculateCjjx(req *EdbInfoCalculateBatchEditReq, edbInfo, fromEdbInfo *EdbInfo, formulaInt int) (err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("EditCalculateCjjx,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()

	oldCalculateFormula := edbInfo.CalculateFormula //原先的n值
	edbInfo, err = GetEdbInfoById(req.EdbInfoId)
	if err != nil {
		return
	}

	//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.ModifyTime = time.Now()
	_, err = to.Update(edbInfo, "EdbName", "EdbNameSource", "Frequency", "Unit", "ClassifyId", "CalculateFormula", "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)

	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 { // 指标未被替换，同时N值未修改，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_CALCULATE_CJJX,
				SourceName:                "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
	err = refreshAllCalculateCjjx(to, edbInfo.EdbInfoId, edbInfo.Source, fromEdbInfo, edbInfo.EdbCode, "", "", formulaInt)

	return
}

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

	// 重新计算
	err = refreshAllCalculateCjjx(to, edbInfoId, source, fromEdbInfo, edbCode, startDate, endDate, formulaInt)

	return
}

// refreshAllCalculateCjjx 刷新全部超季节性数据
func refreshAllCalculateCjjx(to orm.TxOrmer, edbInfoId, source int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate string, formulaInt int) (err error) {
	if err != nil {
		return
	}
	edbInfoIdStr := strconv.Itoa(edbInfoId)
	//计算数据

	var condition string
	var pars []interface{}
	condition += " AND edb_info_id=? "
	pars = append(pars, fromEdbInfo.EdbInfoId)

	if startDate != "" {
		condition += " AND data_time>=? "
		pars = append(pars, startDate)
	}
	//if endDate != "" {
	//	condition += " AND data_time<=? "
	//	pars = append(pars, endDate)
	//}

	dataList, err := GetEdbDataListAllByTo(to, condition, pars, fromEdbInfo.Source, 0)
	if err != nil {
		return err
	}
	var dateArr []string
	dataMap := make(map[string]*EdbInfoSearchData)
	for _, v := range dataList {
		dateArr = append(dateArr, v.DataTime)
		dataMap[v.DataTime] = v
	}
	//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 err
	}
	existDataMap := make(map[string]string)
	for _, v := range existDataList {
		existDataMap[edbCode+v.DataTime] = v.Value
	}

	addSql := ` INSERT INTO edb_data_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
	}

	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.Parse(utils.FormatDate, av)
			if tmpErr != nil {
				err = tmpErr
				return
			}
			pastValueList = append(pastValueList, currentItem.Value)
			for i := 1; i < formulaInt; i++ {
				//前几年的日期
				preDate := currentDate.AddDate(-i, 0, 0)
				preDateStr := preDate.Format(utils.FormatDate)
				if findItem, ok := dataMap[preDateStr]; ok { //上一年同期找到
					pastValueList = append(pastValueList, findItem.Value)
				} else if isCompatibility { // 如果需要兼容上下35天
					nextDateDay := preDate
					preDateDay := preDate
					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 len(pastValueList) == formulaInt {
				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 {
					existValDecimal, err := decimal.NewFromString(existVal)
					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 err
						}
					}
				}
			}
			existDataMap[edbCode+av] = av
		}
	}
	if isAdd {
		addSql = strings.TrimRight(addSql, ",")
		_, err = to.Raw(addSql).Exec()
		if err != nil {
			return err
		}
	}
	return
}

// CjjxSub 计算超季节性值
// 计算公式=现值-过去n年（包括今年）均值，n为取数个数，需大于等于1；
//举例：A指标  2022-10-13值100，2021-10-13值120，2020-10-13值110，设置n=3，则“超季节性”指标计算值为100-（100+120+110）/3=-10。
func CjjxSub(currValue float64, pastValue []float64) (value string) {
	num := len(pastValue)
	if num == 0 {
		return
	}
	numDecimal := decimal.NewFromInt(int64(num))

	af := decimal.NewFromFloat(currValue)
	fmt.Println(af)

	bf := decimal.NewFromFloat(pastValue[0])

	for k := 1; k < num; k++ {
		tmpVal := decimal.NewFromFloat(pastValue[k])
		bf = bf.Add(tmpVal)
	}
	val, _ := af.Sub(bf.Div(numDecimal)).Float64()
	//valStr := utils.SubFloatToString(val, 4)
	valStr := decimal.NewFromFloat(val).RoundCeil(4).String()
	return valStr
}