package models

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

// AddCalculateLjzzy 累计值转月
func AddCalculateLjzzy(req *EdbInfoCalculateBatchSaveReq, fromEdbInfo *EdbInfo, edbCode, uniqueCode string, sysUserId int, sysUserRealName string) (edbInfo *EdbInfo, err error) {
	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()

	if req.EdbInfoId <= 0 {
		edbInfo = new(EdbInfo)
		edbInfo.Source = utils.DATA_SOURCE_CALCULATE_LJZZY
		edbInfo.SourceName = "累计值转月值"
		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.EdbNameEn = req.EdbName
		edbInfo.UnitEn = req.Unit
		edbInfo.EdbType = 2
		edbInfo.Sort = GetAddEdbMaxSortByClassifyId(req.ClassifyId, utils.EDB_INFO_TYPE)
		tmpErr := to.Create(edbInfo).Error
		if tmpErr != nil {
			err = tmpErr
			return
		}

		//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
			calculateMappingItem.FromSubSource = edbInfo.SubSource
			err = to.Create(calculateMappingItem).Error
			if err != nil {
				return
			}
		}
	} else {
		edbInfo, err = GetEdbInfoById(req.EdbInfoId)
		if err != nil {
			return
		}
		dataTableName := GetEdbDataTableName(utils.DATA_SOURCE_CALCULATE_LJZZY, utils.DATA_SUB_SOURCE_EDB)
		deleteSql := ` DELETE FROM %s WHERE edb_info_id=? `
		deleteSql = fmt.Sprintf(deleteSql, dataTableName)
		err = to.Exec(deleteSql, req.EdbInfoId).Error
		if err != nil {
			return
		}
	}

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

	return
}

// EditCalculateLjzzy 编辑累计值转月数据
func EditCalculateLjzzy(edbInfo *EdbInfo, req *EdbInfoCalculateBatchEditReq, fromEdbInfo *EdbInfo) (err error) {
	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()

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

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

	//判断计算指标是否被更换
	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 { // 指标未被替换，无需重新计算
		return
	}

	//删除，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.Exec(sql, edbInfo.EdbInfoId).Error
	if err != nil {
		return
	}

	//清空原有数据
	sql = ` DELETE FROM edb_data_calculate_ljzzy WHERE edb_info_id = ? `
	err = to.Exec(sql, edbInfo.EdbInfoId).Error
	if err != nil {
		return
	}

	//关联关系
	{
		calculateMappingItem := &EdbInfoCalculateMapping{
			EdbInfoCalculateMappingId: 0,
			EdbInfoId:                 edbInfo.EdbInfoId,
			Source:                    utils.DATA_SOURCE_CALCULATE_LJZZY,
			SourceName:                "累计值转月",
			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(),
			FromSubSource:             fromEdbInfo.SubSource,
		}
		err = to.Create(calculateMappingItem).Error
		if err != nil {
			return
		}
	}

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

	return
}

// RefreshAllCalculateLjzzy 刷新全部累计值转月数据
func RefreshAllCalculateLjzzy(edbInfoId, source, subSource int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate string) (err error) {
	to := global.DEFAULT_DmSQL.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()

	// 计算数据
	err = refreshAllCalculateLjzzy(to, edbInfoId, source, subSource, fromEdbInfo, edbCode, startDate, endDate)

	return
}

func refreshAllCalculateLjzzy(to *gorm.DB, edbInfoId, source, subSource int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate string) (err error) {
	edbInfoIdStr := strconv.Itoa(edbInfoId)
	//计算数据

	dataList, err := GetEdbDataListAllByTo(to, fromEdbInfo.Source, fromEdbInfo.SubSource,
		FindEdbDataListAllCond{
			EdbInfoId:         fromEdbInfo.EdbInfoId,
			StartDataTime:     startDate,
			StartDataTimeCond: ">=",
		}, 1)
	if err != nil {
		return err
	}

	yearMap := make(map[int]map[int]*EdbInfoSearchData)
	dataLen := len(dataList)
	for i := 0; i < dataLen; i++ {
		item := dataList[i]
		//日其中获取年
		itemDate, err := time.ParseInLocation(utils.FormatDate, item.DataTime, time.Local)
		if err != nil {
			return err
		}
		year := itemDate.Year()
		month := int(itemDate.Month())
		if monthMap, yok := yearMap[year]; yok {
			monthMap[month] = item
			yearMap[year] = monthMap
		} else {
			monthMap = make(map[int]*EdbInfoSearchData)
			monthMap[month] = item
			yearMap[year] = monthMap
		}
	}

	addSql := ` INSERT INTO edb_data_calculate_ljzzy(edb_info_id,edb_code,data_time,value,create_time,modify_time,data_timestamp) values `
	var isAdd bool
	dataTableName := GetEdbDataTableName(source, subSource)

	//获取指标所有数据
	existDataList, err := GetAllEdbDataListByTo(to, edbInfoId, source, subSource)
	if err != nil {
		return err
	}
	dataMap := make(map[string]string)
	for _, v := range existDataList {
		dataMap[v.DataTime] = v.Value
	}
	existDataMap := make(map[string]string)
	for yk, yv := range yearMap {
		_, oneMonthOk := yv[1]
		_, twoMonthOk := yv[2]
		if !oneMonthOk && !twoMonthOk {
			continue
		}
		for i := 1; i <= 12; i++ {
			fmt.Println(yk, i, yv[i])
			dataCurrentItem := yv[i]
			var date string
			var val float64
			if dataCurrentItem != nil {
				if i == 1 || i == 2 {
					if _, mok := yv[1]; mok { //1月有值
						if i == 1 {
							date = dataCurrentItem.DataTime
							val, _ = decimal.NewFromFloat(dataCurrentItem.Value).Float64() //a.Div(b).Float64()
						}
						if i == 2 {
							dataOneItem := yv[1]
							date = dataCurrentItem.DataTime
							twoMonth := decimal.NewFromFloat(dataCurrentItem.Value)
							oneMonth := decimal.NewFromFloat(dataOneItem.Value)
							val, _ = twoMonth.Sub(oneMonth).Float64()
						}
					} else { //1月无值
						dataTwoItem := yv[2]
						if i == 1 {
							date = strconv.Itoa(yk) + "-01-31"
							a := decimal.NewFromFloat(dataTwoItem.Value)
							b := decimal.NewFromFloat(2.0)
							val, _ = a.Div(b).Float64()
						}
						if i == 2 {
							//1月无值：1月=2月/2
							{
								date = strconv.Itoa(yk) + "-01-31"
								a := decimal.NewFromFloat(dataTwoItem.Value)
								b := decimal.NewFromFloat(2.0)
								val, _ = a.Div(b).Float64()

								tmpSql, newAdd, tmpErr := calculateLjzzy(edbInfoId, date, edbInfoIdStr, edbCode, dataTableName, addSql, val, dataMap, existDataMap, to)
								if !isAdd {
									isAdd = newAdd
								}
								addSql = tmpSql
								if tmpErr != nil {
									return tmpErr
								}
							}
							//end 1月无值

							date = dataCurrentItem.DataTime
							a := decimal.NewFromFloat(dataTwoItem.Value)
							b := decimal.NewFromFloat(2.0)
							val, _ = a.Div(b).Float64()
						}
					}
				} else {
					dataPreItem := yv[i-1]
					if dataCurrentItem != nil && dataPreItem != nil {
						date = dataCurrentItem.DataTime
						//val =  dataCurrentItem.Value - dataPreItem.Value
						a := decimal.NewFromFloat(dataCurrentItem.Value)
						b := decimal.NewFromFloat(dataPreItem.Value)
						val, _ = a.Sub(b).Float64()
					}
				}
			}
			if date != "" {
				tmpSql, newAdd, tmpErr := calculateLjzzy(edbInfoId, date, edbInfoIdStr, edbCode, dataTableName, addSql, val, dataMap, existDataMap, to)
				if !isAdd {
					isAdd = newAdd
				}
				addSql = tmpSql
				if tmpErr != nil {
					return tmpErr
				}
			}
		}
	}
	if isAdd {
		addSql = strings.TrimRight(addSql, ",")
		err = to.Exec(addSql).Error
		if err != nil {
			fmt.Println("RefreshAllCalculateLjzzy add Err", err.Error())
			return
		}
	}
	return
}

func calculateLjzzy(edbInfoId int, date, edbInfoIdStr, edbCode, dataTableName, addSql string, val float64, dataMap, existDataMap map[string]string, to *gorm.DB) (newSql string, isAdd bool, err error) {
	newSql = addSql
	saveValue := utils.SubFloatToString(val, 4)
	//判断数据是否存在
	if existVal, ok := dataMap[date]; !ok {
		dataTime, _ := time.ParseInLocation(utils.FormatDate, date, time.Local)
		timestamp := dataTime.UnixNano() / 1e6
		timeStr := fmt.Sprintf("%d", timestamp)
		if _, existOk := existDataMap[date]; !existOk {
			newSql += GetAddSql(edbInfoIdStr, edbCode, date, timeStr, saveValue)
			isAdd = true
		}
		existDataMap[date] = date
	} else {
		if existVal != saveValue {
			sql := ` UPDATE %s SET value=?,modify_time=NOW() WHERE edb_info_id=? AND data_time=? `
			sql = fmt.Sprintf(sql, dataTableName)
			err = to.Exec(sql, saveValue, edbInfoId, date).Error
		}
	}
	return
}