package models

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

// CheckFrequency 判断是否可以降频
func CheckFrequency(fromEdbFrequency, edbFrequency string) (ok bool) {
	frequencyList := make([]string, 0)
	switch fromEdbFrequency {
	case "日度":
		frequencyList = []string{"日度"}
	case "周度":
		frequencyList = []string{"日度", "周度"}
	case "旬度":
		frequencyList = []string{"日度", "周度", "旬度"}
	case "月度":
		frequencyList = []string{"日度", "周度", "旬度", "月度"}
	case "季度":
		frequencyList = []string{"日度", "周度", "旬度", "月度", "季度"}
	default:
		return
	}

	// 如果存在,那么就标识不允许降频
	if utils.InArrayByStr(frequencyList, edbFrequency) {
		return
	}
	ok = true

	return
}

// AddCalculateJp 降频
func AddCalculateJp(req *EdbInfoCalculateBatchSaveReq, fromEdbInfo *EdbInfo, edbCode, uniqueCode string, sysUserId int, sysUserRealName string) (edbInfo *EdbInfo, err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("AddCalculateJp,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()
	if req.EdbInfoId <= 0 {
		edbInfo = new(EdbInfo)
		edbInfo.Source = utils.DATA_SOURCE_CALCULATE_JP
		edbInfo.SourceName = utils.DATA_SOURCE_NAME_CALCULATE_JP
		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)
		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
			calculateMappingItem.FromSubSource = fromEdbInfo.SubSource
			_, err = to.Insert(calculateMappingItem)
			if err != nil {
				return
			}
		}
	} else {
		edbInfo, err = GetEdbInfoById(req.EdbInfoId)
		if err != nil {
			return
		}
		dataTableName := GetEdbDataTableName(utils.DATA_SOURCE_CALCULATE_JP, utils.DATA_SUB_SOURCE_EDB)
		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 = refreshAllCalculateJp(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource, fromEdbInfo, edbInfo.EdbCode, edbInfo.Frequency, edbInfo.CalculateFormula)

	return
}

// EditCalculateJp 修改降频数据
func EditCalculateJp(edbInfo *EdbInfo, req *EdbInfoCalculateBatchEditReq, fromEdbInfo *EdbInfo) (err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("EditCalculateJp,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()

	//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.Update(edbInfo, "EdbName", "EdbNameSource", "Frequency", "Unit", "ClassifyId", "CalculateFormula", "ModifyTime", "EdbNameEn", "UnitEn")
	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 { // 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.Raw(sql, edbInfo.EdbInfoId).Exec()
	if err != nil {
		err = errors.New("删除计算指标关联关系失败,Err:" + err.Error())
		return
	}
	//清空原有数据
	tableName := GetEdbDataTableName(edbInfo.Source, edbInfo.SubSource)
	sql = ` DELETE FROM ` + tableName + ` WHERE edb_info_id = ? `
	_, err = to.Raw(sql, edbInfo.EdbInfoId).Exec()
	if err != nil {
		return
	}
	//关联关系
	{
		calculateMappingItem := &EdbInfoCalculateMapping{
			EdbInfoCalculateMappingId: 0,
			EdbInfoId:                 edbInfo.EdbInfoId,
			Source:                    edbInfo.Source,
			SourceName:                edbInfo.SourceName,
			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.Insert(calculateMappingItem)
		if err != nil {
			return
		}
	}

	//计算数据
	err = refreshAllCalculateJp(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource, fromEdbInfo, edbInfo.EdbCode, edbInfo.Frequency, edbInfo.CalculateFormula)

	return
}

func RefreshAllCalculateJp(edbInfoId, source, subSource int, fromEdbInfo *EdbInfo, edbCode, edbFrequency, formula string) (err error) {
	o := orm.NewOrm()
	to, err := o.Begin()
	if err != nil {
		return
	}
	defer func() {
		if err != nil {
			fmt.Println("RefreshAllCalculateJp,Err:" + err.Error())
			_ = to.Rollback()
		} else {
			_ = to.Commit()
		}
	}()

	// 计算数据
	err = refreshAllCalculateJp(to, edbInfoId, source, subSource, fromEdbInfo, edbCode, edbFrequency, formula)

	return
}

// refreshAllCalculateJp 刷新降频数据
func refreshAllCalculateJp(to orm.TxOrmer, edbInfoId, source, subSource int, fromEdbInfo *EdbInfo, edbCode, edbFrequency, formula string) (err error) {
	edbInfoIdStr := strconv.Itoa(edbInfoId)

	//计算数据
	//获取来源指标的数据
	dataList, err := GetEdbDataListAllByTo(to, fromEdbInfo.Source, fromEdbInfo.SubSource, FindEdbDataListAllCond{
		EdbInfoId: fromEdbInfo.EdbInfoId,
	}, 1)
	if err != nil {
		return err
	}
	var dateArr []string
	dataMap := make(map[string]*EdbInfoSearchData)
	fromDataMap := make(map[string]float64)
	//来源指指标数据
	for _, v := range dataList {
		dateArr = append(dateArr, v.DataTime)
		dataMap[v.DataTime] = v
		fromDataMap[v.DataTime] = v.Value
	}
	fmt.Println("source:", source)

	// 获取已经入库的降频指标所有数据
	existDataList, err := GetAllEdbDataListByTo(to, edbInfoId, source, subSource)
	if err != nil {
		return
	}
	//计算指标的map
	existDataMap := make(map[string]*EdbData)

	// 已经入库的日期map
	existDelDateMap := make(map[string]string)
	//existDataMap := make(map[string]string, 0)
	for _, v := range existDataList {
		existDataMap[v.DataTime] = v
		existDelDateMap[v.DataTime] = v.DataTime
	}

	tableName := GetEdbDataTableName(utils.DATA_SOURCE_CALCULATE_JP, subSource)
	addSql := ` INSERT INTO ` + tableName + ` (edb_info_id,edb_code,data_time,value,create_time,modify_time,data_timestamp) values `
	var isAdd bool

	//existMap := make(map[string]string)
	dataLen := len(dataList)
	if dataLen <= 0 {
		return
	}
	startDataTime, _ := time.ParseInLocation(utils.FormatDate, dataList[0].DataTime, time.Local)
	endDataTime, _ := time.ParseInLocation(utils.FormatDate, dataList[dataLen-1].DataTime, time.Local)

	nextEndDate := utils.GetFrequencyEndDay(startDataTime, edbFrequency) // 下一个节点的日期
	weekDayDataList := make([]float64, 0)
	for tmpStartDataTime := startDataTime; !tmpStartDataTime.After(endDataTime); tmpStartDataTime = tmpStartDataTime.AddDate(0, 0, 1) {
		// 将当前数据加入到 weekDayDataList
		if tmpData, ok := dataMap[tmpStartDataTime.Format(utils.FormatDate)]; ok {
			tmpValue := decimal.NewFromFloat(tmpData.Value)
			tmpValueFloat, _ := tmpValue.Round(4).Float64()
			weekDayDataList = append(weekDayDataList, tmpValueFloat)
		}

		// 日期处理过滤
		switch edbFrequency {
		case "周度":
			if tmpStartDataTime.Weekday() != 5 {
				//不是周五,代表需要进入下一个循环获取数据并计算
				continue
			} else {
				//记录下一个结束节点的日期
				nextEndDate = tmpStartDataTime.AddDate(0, 0, 7)
			}
		case "旬度":
			nextDay := tmpStartDataTime.AddDate(0, 0, 1)
			if nextDay.Day() != 1 && nextDay.Day() != 11 && nextDay.Day() != 21 {
				//不是每月10、20、最后一天,代表需要进入下一个循环获取数据并计算
				continue
			} else {
				//记录下一个结束节点的日期
				if nextDay.Day() == 1 || nextDay.Day() == 11 {
					//月初或者月末的时候,加10天就好了
					nextEndDate = nextDay.AddDate(0, 0, 9)
				} else {
					tmpNextMonth := nextDay.AddDate(0, 1, 0)
					nextEndDate = time.Date(tmpNextMonth.Year(), tmpNextMonth.Month(), 1, 0, 0, 0, 0, time.Local).AddDate(0, 0, -1)
				}
			}
		case "月度":
			nextDay := tmpStartDataTime.AddDate(0, 0, 1)
			if nextDay.Day() != 1 {
				//不是每月最后一天,代表需要进入下一个循环获取数据并计算
				continue
			} else {
				//记录下一个结束节点的日期
				nextEndDate = nextDay.AddDate(0, 1, -1)
			}
		case "季度":
			nextDay := tmpStartDataTime.AddDate(0, 0, 1)
			if (nextDay.Month() == 1 || nextDay.Month() == 4 || nextDay.Month() == 7 || nextDay.Month() == 10) && nextDay.Day() == 1 {
				//记录下一个结束节点的日期
				nextEndDate = nextDay.AddDate(0, 3, -1)
			} else {
				//不是3,6,9,12 月份的最后一天,代表需要进入下一个循环获取数据并计算
				continue
			}
		case "年度":
			if tmpStartDataTime.Month() == 12 && tmpStartDataTime.Day() == 31 {
				//记录下一个结束节点的日期
				nextEndDate = tmpStartDataTime.AddDate(1, 0, 0)
			} else {
				//不是每年的12-31日,代表需要进入下一个循环获取数据并计算
				continue
			}
		default:
			err = errors.New("错误的频度:" + edbFrequency)
			return
		}

		// 本期的数据值
		lenWeekDayDataList := len(weekDayDataList)
		if lenWeekDayDataList <= 0 {
			continue
		}

		// 当前时间段内的数据计算,得出实际值
		var currVal float64
		if formula == "期末值" { // 期末值，取区间最后一个日期的数据值
			currVal = weekDayDataList[lenWeekDayDataList-1]
		} else {
			// 平均值 取区间平均值
			sumValDeci := decimal.NewFromFloat(0)
			for _, v := range weekDayDataList {
				tmpValDeci := decimal.NewFromFloat(v)
				sumValDeci = sumValDeci.Add(tmpValDeci)
			}
			lenDeci := decimal.NewFromInt(int64(lenWeekDayDataList))
			currVal, _ = sumValDeci.Div(lenDeci).Round(4).Float64()
		}

		tmpStartDataTimeStr := tmpStartDataTime.Format(utils.FormatDate)

		// 判断降频指标是否存在数据
		if existData, ok := existDataMap[tmpStartDataTimeStr]; ok {
			// 处理降频数据的值
			existValStr := existData.Value
			existValDeci, tmpErr := decimal.NewFromString(existValStr)
			if tmpErr != nil {
				err = tmpErr
				return
			}

			existVal, _ := existValDeci.Round(4).Float64()
			// 判断降频数据的值 与 当前计算出来的结果, 如果两个数据结果不相等的话,那么就修改咯
			if existVal != currVal {
				err = ModifyEdbDataById(source, subSource, existData.EdbDataId, fmt.Sprint(currVal))
				if err != nil {
					return err
				}
			}

			// 移除待删除的日期
			delete(existDelDateMap, tmpStartDataTimeStr)
		} else {
			// 直接入库
			timestamp := tmpStartDataTime.UnixNano() / 1e6
			timestampStr := fmt.Sprintf("%d", timestamp)
			addSql += GetAddSql(edbInfoIdStr, edbCode, tmpStartDataTimeStr, timestampStr, fmt.Sprint(currVal))
			isAdd = true

			// 移除待删除的日期
			delete(existDelDateMap, tmpStartDataTimeStr)
		}

		// 一轮结束后,数据清空
		weekDayDataList = make([]float64, 0)
	}

	// 最后已有的日期处理完成后,需要对剩余不在时间段内的数据做处理
	lenWeekDayDataList := len(weekDayDataList)
	if lenWeekDayDataList > 0 {
		// 当前时间段内的数据计算,得出实际值
		var currVal float64
		if formula == "期末值" {
			currVal = weekDayDataList[lenWeekDayDataList-1]
		} else {
			// 平均值
			sumValDeci := decimal.NewFromFloat(0)
			for _, v := range weekDayDataList {
				tmpValDeci := decimal.NewFromFloat(v)
				sumValDeci = sumValDeci.Add(tmpValDeci)
			}
			lenDeci := decimal.NewFromInt(int64(lenWeekDayDataList))
			currVal, _ = sumValDeci.Div(lenDeci).Round(4).Float64()
		}
		nextEndDateStr := nextEndDate.Format(utils.FormatDate)

		// 判断降频指标是否存在数据
		if existData, ok := existDataMap[nextEndDateStr]; ok {
			// 处理降频数据的值
			existValStr := existData.Value
			existValDeci, tmpErr := decimal.NewFromString(existValStr)
			if tmpErr != nil {
				err = tmpErr
				return
			}
			existVal, _ := existValDeci.Round(4).Float64()
			// 判断降频数据的值 与 当前计算出来的结果, 如果两个数据结果不相等的话,那么就修改咯
			if existVal != currVal {
				err = ModifyEdbDataById(source, subSource, existData.EdbDataId, fmt.Sprint(currVal))
				if err != nil {
					return err
				}
			}
			// 移除待删除的日期
			delete(existDelDateMap, nextEndDateStr)
		} else {
			// 直接入库
			timestamp := nextEndDate.UnixNano() / 1e6
			timestampStr := fmt.Sprintf("%d", timestamp)
			addSql += GetAddSql(edbInfoIdStr, edbCode, nextEndDate.Format(utils.FormatDate), timestampStr, fmt.Sprint(currVal))
			isAdd = true
			// 移除待删除的日期
			delete(existDelDateMap, nextEndDate.Format(utils.FormatDate))
		}
	}

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

	// 移除不存在的日期数据
	if len(existDelDateMap) > 0 {
		removeDateList := make([]string, 0) //需要移除的日期
		for k := range existDelDateMap {
			removeDateList = append(removeDateList, k)
		}
		removeDateStr := strings.Join(removeDateList, `","`)
		removeDateStr = `"` + removeDateStr + `"`
		sql := fmt.Sprintf(` DELETE FROM %s WHERE edb_info_id = ? and data_time in (%s) `, tableName, removeDateStr)
		_, err = to.Raw(sql, edbInfoId).Exec()
		if err != nil {
			err = fmt.Errorf("删除年化指标数据失败,Err:" + err.Error())
			return
		}
	}

	return
}