package models

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

// AddCalculateTimeShift 时间移位
func AddCalculateTimeShift(req *EdbInfoCalculateBatchSaveReq, fromEdbInfo *EdbInfo, edbCode, uniqueCode string, sysUserId int, sysUserRealName string) (edbInfo *EdbInfo, err error) {
	to := global.DEFAULT_DB.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()
	if req.EdbInfoId <= 0 {
		edbInfo = new(EdbInfo)
		edbInfo.Source = utils.DATA_SOURCE_CALCULATE_TIME_SHIFT
		edbInfo.SourceName = "时间移位"
		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)
		edbInfo.MoveType = req.MoveType
		edbInfo.MoveFrequency = req.MoveFrequency
		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_TIME_SHIFT, utils.DATA_SUB_SOURCE_EDB)
		fmt.Println("dataTableName:" + dataTableName)
		deleteSql := ` DELETE FROM %s WHERE edb_info_id=? `
		deleteSql = fmt.Sprintf(deleteSql, dataTableName)
		err = to.Exec(deleteSql, req.EdbInfoId).Error
		if err != nil {
			return
		}
	}

	formulaInt, _ := strconv.Atoi(req.Formula)

	//计算数据
	err = refreshAllCalculateTimeShift(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource, formulaInt, edbInfo.MoveType, fromEdbInfo, edbInfo.EdbCode, "", "", edbInfo.MoveFrequency)

	return
}

// EditCalculateTimeShift 修改时间移位
func EditCalculateTimeShift(edbInfo *EdbInfo, req *EdbInfoCalculateBatchEditReq, fromEdbInfo *EdbInfo) (err error) {
	to := global.DEFAULT_DB.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()
	oldEdbInfo := *edbInfo //旧的指标信息

	//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.MoveType = req.MoveType
	edbInfo.MoveFrequency = req.MoveFrequency
	edbInfo.CalculateFormula = req.Formula
	edbInfo.EdbNameEn = req.EdbNameEn
	edbInfo.UnitEn = req.UnitEn
	edbInfo.ModifyTime = time.Now()
	err = to.Model(edbInfo).Select([]string{"EdbName", "EdbNameSource", "Frequency", "Unit", "ClassifyId", "MoveType", "MoveFrequency", "CalculateFormula", "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 || req.MoveType != oldEdbInfo.MoveType || req.MoveFrequency != oldEdbInfo.MoveFrequency || req.Formula != oldEdbInfo.CalculateFormula {
		//如果是依赖指标变更，那么需要删除对应的关联指标，并添加新的关系
		if count <= 0 {
			//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 {
				err = errors.New("删除计算指标关联关系失败,Err:" + err.Error())
				return
			}
			//关联关系
			{
				calculateMappingItem := &EdbInfoCalculateMapping{
					EdbInfoCalculateMappingId: 0,
					EdbInfoId:                 edbInfo.EdbInfoId,
					Source:                    utils.DATA_SOURCE_CALCULATE_TIME_SHIFT,
					SourceName:                "时间移位",
					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
				}
			}
		}

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

		//计算数据
		formulaInt, _ := strconv.Atoi(req.Formula)
		err = refreshAllCalculateTimeShift(to, edbInfo.EdbInfoId, edbInfo.Source, edbInfo.SubSource, formulaInt, edbInfo.MoveType, fromEdbInfo, edbInfo.EdbCode, "", "", edbInfo.MoveFrequency)
	}
	return
}

// RefreshAllCalculateTimeShift 刷新所有时间移位数据
func RefreshAllCalculateTimeShift(edbInfoId, source, subSource, formulaInt, moveType int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate, moveFrequency string) (err error) {
	to := global.DEFAULT_DB.Begin()
	defer func() {
		if err != nil {
			to.Rollback()
		} else {
			to.Commit()
		}
	}()

	//计算数据
	err = refreshAllCalculateTimeShift(to, edbInfoId, source, subSource, formulaInt, moveType, fromEdbInfo, edbCode, startDate, endDate, moveFrequency)

	return
}

// refreshAllCalculateTimeShift 刷新所有时间移位数据
func refreshAllCalculateTimeShift(to *gorm.DB, edbInfoId, source, subSource, formulaInt, moveType int, fromEdbInfo *EdbInfo, edbCode, startDate, endDate, moveFrequency string) (err error) {
	edbInfoIdStr := strconv.Itoa(edbInfoId)

	//计算数据

	var shiftDay int
	switch moveFrequency {
	case "天":
		shiftDay = formulaInt
	case "周":
		shiftDay = formulaInt * 7
	case "月":
		shiftDay = formulaInt * 30
	case "季":
		shiftDay = formulaInt * 90
	case "年":
		shiftDay = formulaInt * 365
	default:
		shiftDay = formulaInt
	}

	if moveType == 2 {
		shiftDay = -shiftDay
	}

	dataList, err := GetEdbDataListAllByTo(to, fromEdbInfo.Source, fromEdbInfo.SubSource, FindEdbDataListAllCond{
		EdbInfoId:         fromEdbInfo.EdbInfoId,
		StartDataTime:     startDate,
		StartDataTimeCond: ">=",
	}, 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
	}
	fmt.Println("source:", source)
	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)
	removeDateMap := make(map[string]string)
	for _, v := range existDataList {
		existDataMap[v.DataTime] = v.Value
		removeDateMap[v.DataTime] = ``
	}
	fmt.Println("existDataMap:", existDataMap)
	addSql := ` INSERT INTO edb_data_calculate_time_shift(edb_info_id,edb_code,data_time,value,create_time,modify_time,data_timestamp) values `
	addSql = utils.ReplaceDriverKeywords("", addSql)
	var isAdd bool

	existMap := make(map[string]string)
	dataLen := len(dataList)
	for i := 0; i < dataLen; i++ {
		//当期
		currentItem := dataList[i]
		existKey := edbCode + currentItem.DataTime
		if _, ok := existMap[existKey]; !ok {
			currentDate, _ := time.ParseInLocation(utils.FormatDate, currentItem.DataTime, time.Local)
			newDate := currentDate.AddDate(0, 0, shiftDay)

			timestamp := newDate.UnixNano() / 1e6
			timestampStr := fmt.Sprintf("%d", timestamp)
			valStr := decimal.NewFromFloat(currentItem.Value).Round(4).String()
			if existVal, ok := existDataMap[newDate.Format(utils.FormatDate)]; !ok {
				isAdd = true
				addSql += GetAddSql(edbInfoIdStr, edbCode, newDate.Format(utils.FormatDate), timestampStr, valStr)
			} else {
				existValDecimal, err := decimal.NewFromString(existVal)
				existStr := existValDecimal.String()
				if existStr != valStr {
					sql := ` UPDATE %s SET value=?,modify_time=NOW() WHERE edb_info_id=? AND data_time=? `
					sql = fmt.Sprintf(sql, dataTableName)
					err = to.Exec(sql, valStr, edbInfoId, newDate.Format(utils.FormatDate)).Error
					if err != nil {
						return err
					}
				}
			}

			// 指标已存在，那么就移除该日期
			delete(removeDateMap, newDate.Format(utils.FormatDate))
		}
		existMap[existKey] = currentItem.DataTime
	}

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

	// 移除不存在的日期数据
	if len(removeDateMap) > 0 {
		removeDateList := make([]string, 0) //需要移除的日期
		for k := range removeDateMap {
			removeDateList = append(removeDateList, k)
		}
		err = DelEdbDataByMysql(to, edbInfoId, dataTableName, removeDateList)
		if err != nil {
			err = fmt.Errorf("删除年化指标数据失败,Err:" + err.Error())
			return
		}
	}

	return
}