package keyword

import (
	"fmt"
	"time"

	"91porn-server/common/db"
	"91porn-server/common/log"
	"91porn-server/common/timeutil/timerange"
	"91porn-server/models/s/kwstatmod"
	"91porn-server/models/s/statrecordmod"
	"91porn-server/skd/skdg"
)

// RunStat
func RunStat(defaultStatDate time.Time) {
	log.Info("keyword stat running...")
	defer log.Info("keyword stat finished...")
	now := time.Now()
	//从历史提交记录中获取上次记录时间
	lastStatAt, err := statrecordmod.LastRecordTime(statrecordmod.KeywordStatJob, defaultStatDate) //第一次从默认记录时间开始统计
	if err != nil {
		log.Error("Keyword RunStat lastRecordTime faild!", log.E(err))
		return
	}
	recentMinute := timerange.RecentMinute(now, statrecordmod.FiveMinuteScale) //对齐本次统计时间 Minute % frequency == 0
	//拆分时间区间并依次提交,均衡数据库读写压力
	for recentMinute.After(lastStatAt) {
		end := lastStatAt.Add(statrecordmod.FiveMinuteScale * time.Minute)
		//防止时间超出范围
		if end.After(recentMinute) {
			end = recentMinute
		}
		subTimeRange := timerange.TimeRange{ //连续子切片
			Head: lastStatAt,
			Tail: end,
		}
		//此时的零日点
		sumDate := timerange.LocDayRange(subTimeRange.Head).Head
		//装配基础统计数据
		incDocList, err := GetIncDocList(subTimeRange)
		if err != nil {
			log.Error("Keyword RunStat GetIncDocList faild!", log.E(err))
			return
		}
		//提交数据
		log.Info("keywordStat committing...", log.Any("sumDate", sumDate), log.Any("location", sumDate.Location().String()))
		if err = commit(sumDate, subTimeRange.Tail, incDocList); err != nil {
			log.Error("Keyword RunStat commit faild!", log.E(err))
			return
		}
		log.Info("keywordStat committed.", log.Any("sumDate", sumDate), log.Any("location", sumDate.Location().String()))
		lastStatAt = end
	}
}

// commit 提交统计数据
func commit(sumDate time.Time, recordTime time.Time, incDocList []kwstatmod.KeywordIncDoc) error {
	opt := (&db.TransOpts{}).SetReEntry(10)
	return skdg.StatDB.Trans(func(trans *db.MongoTool) (err error) {
		if len(incDocList) != 0 {
			if err = kwstatmod.ChangeStatTrans(trans, sumDate, recordTime, incDocList); err != nil {
				return fmt.Errorf(" keyword commit ChangeStatTrans faild!, err:%+v\n", err)
			}
		}
		//提交本次修改记录
		if err = statrecordmod.UpsertOneTrans(trans, statrecordmod.KeywordStatJob, recordTime); err != nil {
			return fmt.Errorf(" keyword commit UpsertOneTrans faild!, err:%+v\n", err)
		}
		return
	}, opt)
}