package data

import (
	"errors"
	"fmt"
	"hongze/hongze_task/models/data_manage"
	"hongze/hongze_task/utils"
	"strconv"
	"strings"
	"time"

	"github.com/yidane/formula"
)

//指标运算刷新数据
func RefreshCalculate(edbInfoIdArr []*data_manage.EdbInfo, edbInfoId int, edbCode, formulaStr, startDate, endDate string, edbInfoIdBytes []string) (err error) {
	defer func() {
		if err != nil {
			utils.FileLog.Info("Calculate Err:%s" + err.Error())
			go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "RefreshCalculate ErrMsg:"+err.Error(), utils.EmailSendToUsers)
		}
	}()
	saveDataMap := make(map[string]map[int]float64)
	for _, v := range edbInfoIdArr {
		var condition string
		var pars []interface{}
		condition += " AND edb_info_id=? "
		pars = append(pars, v.EdbInfoId)
		if startDate != "" {
			condition += " AND data_time>=? "
			pars = append(pars, startDate)
		}
		if endDate != "" {
			condition += " AND data_time<=? "
			pars = append(pars, endDate)
		}
		dataList, err := data_manage.GetEdbDataListAll(condition, pars, v.Source, 1)

		if err != nil {
			return err
		}
		dataMap := make(map[string]float64)
		for _, dv := range dataList {
			if val, ok := saveDataMap[dv.DataTime]; ok {
				if _, ok := val[v.EdbInfoId]; !ok {
					val[v.EdbInfoId] = dv.Value
				}
			} else {
				temp := make(map[int]float64)
				temp[v.EdbInfoId] = dv.Value
				saveDataMap[dv.DataTime] = temp
			}
		}
		item := new(CalculateItems)
		item.EdbInfoId = v.EdbInfoId
		item.DataMap = dataMap
	}

	formulaMap := CheckFormula(formulaStr)
	addSql := ` INSERT INTO edb_data_calculate(edb_info_id,edb_code,data_time,value,create_time,modify_time,status,data_timestamp) values `
	nowStr := time.Now().Format(utils.FormatDateTime)
	var isAdd bool
	removeDateList := make([]string, 0) //需要移除的日期

	for sk, sv := range saveDataMap {
		formulaStr = strings.ToUpper(formulaStr)
		formulaFormStr := ReplaceFormula(edbInfoIdArr, sv, formulaMap, formulaStr, edbInfoIdBytes)
		//if formulaFormStr != "" && !strings.Contains(formulaFormStr, "/0") {
		if formulaFormStr != "" {
			expression := formula.NewExpression(formulaFormStr)
			calResult, err := expression.Evaluate()
			if err != nil {
				// 分母为0的报错
				if strings.Contains(err.Error(), "divide by zero") {
					removeDateList = append(removeDateList, sk)
					continue
				}
				err = errors.New("计算失败,edbCode：" + fmt.Sprint(edbCode) + "：Err:" + err.Error() + ";formulaStr:" + formulaFormStr)
				fmt.Println(err)
				return err
			}
			calVal, err := calResult.Float64()
			if err != nil {
				err = errors.New("计算失败：获取计算值失败 Err:" + err.Error() + ";formulaStr:" + formulaFormStr)
				fmt.Println(err)
				return err
			}

			count, err := data_manage.GetEdbDataCalculateByCodeAndDate(edbCode, sk)
			if err != nil && err.Error() != utils.ErrNoRow() {
				return err
			}
			if count <= 0 { //需要存入的数据
				dataTime, _ := time.Parse(utils.FormatDate, sk)
				timestamp := dataTime.UnixNano() / 1e6
				timeStr := fmt.Sprintf("%d", timestamp)
				addSql += "("
				addSql += strconv.Itoa(edbInfoId) + "," + "'" + edbCode + "'" + "," + "'" + sk + "'" + "," + utils.SubFloatToString(calVal, 4) + "," + "'" + nowStr + "'" +
					"," + "'" + nowStr + "'" + "," + "1"
				addSql += "," + "'" + timeStr + "'"
				addSql += "),"
				isAdd = true
			} else {
				calVal = utils.FixFloat(calVal, 4)
				err = data_manage.ModifyEdbDataCalculate(int64(edbInfoId), sk, calVal)
				if err != nil {
					return err
				}
			}
		}
	}
	if isAdd {
		addSql = strings.TrimRight(addSql, ",")
		err = data_manage.AddEdbDataCalculateBySql(addSql)
		if err != nil {
			fmt.Println("AddEdbDataCalculate Err:" + err.Error())
			return err
		}
	}
	if len(removeDateList) > 0 {
		removeDateStr := strings.Join(removeDateList, `","`)
		removeDateStr = `"` + removeDateStr + `"`
		//如果拼接指标变更了，那么需要删除所有的指标数据
		sql := fmt.Sprintf(` DELETE FROM edb_data_calculate WHERE edb_info_id = ? and data_time in (%s) `, removeDateStr)
		err = data_manage.DeleteEdbDataCalculateBySql(sql, edbInfoId)
		if err != nil {
			err = fmt.Errorf("删除计算失败的计算指标数据失败,Err:" + err.Error())
			return
		}
	}
	return
}