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"
)

// AddCalculateTbz 同比值
func AddCalculateTbz(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_TBZ
		edbInfo.SourceName = "同比值"
		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 = fromEdbInfo.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_TBZ, 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 = refreshAllCalculateTbz(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource, fromEdbInfo, edbCode, "", "")

	return
}

// EditCalculateTbz 同比值
func EditCalculateTbz(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.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
	}

	//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.Exec(sql, edbInfo.EdbInfoId).Error
	if err != nil {
		return
	}
	//清空原有数据
	sql = ` DELETE FROM edb_data_calculate_tbz 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_TBZ,
			SourceName:                "同比值",
			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 = refreshAllCalculateTbz(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource, fromEdbInfo, edbInfo.EdbCode, "", "")

	return
}

// RefreshAllCalculateTbz 刷新所有同比值数据
func RefreshAllCalculateTbz(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 = refreshAllCalculateTbz(to, edbInfoId, source, subSource, fromEdbInfo, edbCode, startDate, endDate)
	return
}

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

	// 获取来源指标数据
	dataList, err := GetEdbDataListAll(fromEdbInfo.Source, fromEdbInfo.SubSource, FindEdbDataListAllCond{
		EdbInfoId: fromEdbInfo.EdbInfoId,
		//StartDataTime:     startDate,
		//StartDataTimeCond: ">=",
	}, 0)
	if err != nil {
		return err
	}

	// 来源指标数据参与计算
	calculateDataList, err := EdbInfoSearchDataToEdbInfoData(dataList)
	if err != nil {
		return err
	}
	baseCalculate := BaseCalculate{
		DataList:  calculateDataList,
		Frequency: fromEdbInfo.Frequency,
		Source:    3,
	}
	dateDataMap, err, _ := baseCalculate.Tbz()
	if err != nil {
		return err
	}

	dataTableName := GetEdbDataTableName(source, subSource)

	//获取指标所有数据
	existDataList, err := GetAllEdbDataListByTo(to, edbInfoId, source, subSource)
	if err != nil {
		return err
	}
	existDataMap := make(map[string]string)
	removeDataTimeMap := make(map[string]bool) //需要移除的日期数据
	for _, v := range existDataList {
		existDataMap[v.DataTime] = v.Value
		removeDataTimeMap[v.DataTime] = true
	}
	//fmt.Println("existDataMap:", existDataMap)

	addSql := ` INSERT INTO edb_data_calculate_tbz(edb_info_id,edb_code,data_time,value,create_time,modify_time,data_timestamp) values `
	var isAdd bool
	existAddDataMap := make(map[string]string)

	for currentDate, valFloat := range dateDataMap {
		currentDateStr := currentDate.Format(utils.FormatDate)
		timestamp := currentDate.UnixNano() / 1e6
		timestampStr := fmt.Sprintf("%d", timestamp)
		val := decimal.NewFromFloat(valFloat).String()

		//校验待删除日期数据里面是否存在该元素，如果存在的话，那么移除该日期
		delete(removeDataTimeMap, currentDateStr)

		if existVal, ok := existDataMap[currentDateStr]; !ok {
			if _, existOk := existAddDataMap[currentDateStr]; !existOk {
				addSql += GetAddSql(edbInfoIdStr, edbCode, currentDateStr, timestampStr, val)
				isAdd = true
			}
			existAddDataMap[currentDateStr] = currentDateStr
		} 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.Exec(sql, val, edbInfoId, currentDateStr).Error
				if err != nil {
					return err
				}
			}
		}
	}

	//删除已经不存在的指标数据（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
			sql := fmt.Sprintf(` DELETE FROM %s WHERE edb_info_id = ? and data_time in (`+utils.GetOrmInReplace(removeNum)+`) `, dataTableName)

			err = to.Exec(sql, edbInfoId, removeDateList).Error
			if err != nil {
				err = fmt.Errorf("删除自有数据的明细数据失败,Err:" + err.Error())
				return
			}
		}
	}

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

	return
}