package dao

import (
	"encoding/json"
	"fmt"
	"service/app/mix/conf"
	"service/bizcommon/util"
	"service/dbstruct"
	"service/library/elasticsearchdb"
	"service/library/logger"
	"time"
	"unicode"

	"service/api/consts"
	streameracctproto "service/api/proto/streamer_acct/proto"

	"github.com/gin-gonic/gin"
	"github.com/olivere/elastic/v7"
)

const (
	EsEnvProd  = 0
	EsEnvTest  = 1
	EsEnvLocal = 2
)

type ElasticSearch struct {
	clientMix *elastic.Client
}

func NewElasticSearch(cfg *conf.ConfigSt) (es *ElasticSearch, err error) {
	es = new(ElasticSearch)

	es.clientMix, err = elasticsearchdb.NewElasticSearchClient(cfg.ElasticSearch)
	if err != nil {
		logger.Error("NewElasticSearchClient fail, cfg: %v, err: %v", util.ToJson(cfg.ElasticSearch), err)
		return
	}

	return
}

const (
	IndexStreamerAcct = "new_streamer_acct"
	TypeStreamerAcct  = "_doc"
)

func (es *ElasticSearch) getIndexStreamerAcct() string {
	return IndexStreamerAcct
}

func (es *ElasticSearch) CreateStreamerAcct(ctx *gin.Context, streameraccts []*dbstruct.EsStreamerAcct) error {
	bulk := es.clientMix.Bulk().Index(es.getIndexStreamerAcct()).Refresh("true")
	for _, streameracct := range streameraccts {
		bulk.Add(elastic.NewBulkCreateRequest().Id(fmt.Sprint(streameracct.Mid)).Doc(streameracct))
	}
	_, err := bulk.Do(ctx)
	return err
}

func (es *ElasticSearch) UpdateStreamerAcct(ctx *gin.Context, streameracct *dbstruct.EsStreamerAcct) error {
	_, err := es.clientMix.Update().Index(es.getIndexStreamerAcct()).Id(fmt.Sprint(streameracct.Mid)).Doc(map[string]any{
		"name":   streameracct.Name,
		"pinyin": streameracct.PinYin,
		"ut":     streameracct.Ut,
	}).Do(ctx)
	return err
}

func (es *ElasticSearch) UpdateStreamerAcctSelectively(ctx *gin.Context, streameracct *dbstruct.EsStreamerAcctUpdater) error {
	_, err := es.clientMix.Update().Index(es.getIndexStreamerAcct()).Id(fmt.Sprint(streameracct.GetMid())).Doc(util.EntityToM(streameracct)).Do(ctx)
	return err
}

func (es *ElasticSearch) UpdateStreamerAcctSelectivelyByMids(ctx *gin.Context, streameracct *dbstruct.EsStreamerAcctUpdater, mids []int64) error {
	mp := util.EntityToM(streameracct)
	bulk := es.clientMix.Bulk().Index(es.getIndexStreamerAcct()).Refresh("true")
	for _, mid := range mids {
		bulk.Add(elastic.NewBulkUpdateRequest().Id(fmt.Sprint(mid)).Doc(mp))
	}
	_, err := bulk.Do(ctx)
	return err
}

func (es *ElasticSearch) GetStreamerAcctListFuzzilyByName(ctx *gin.Context, req *streameracctproto.OpListFuzzilyByNameReq) (list []*dbstruct.EsStreamerAcct, err error) {

	list = make([]*dbstruct.EsStreamerAcct, 0)

	var nameClause elastic.Query
	var pinyinClause elastic.Query
	// 查询文字长度小于短语匹配的，进行Term匹配，否则进行短语匹配
	len := 0
	for _, char := range req.Name {
		if unicode.Is(unicode.Han, char) {
			len++
		} else {
			len++
		}
	}
	if len < consts.StreamerAcct_MatchPhraseLen {
		nameClause = elastic.NewTermQuery("name.short_char", req.Name)
		pinyinClause = elastic.NewTermQuery("pinyin.short_char", req.Name)
	} else {
		nameClause = elastic.NewMatchPhraseQuery("name.long_char", req.Name)
		pinyinClause = elastic.NewMatchPhraseQuery("pinyin.long_char", req.Name)
	}
	orClause := elastic.NewBoolQuery().Should(nameClause, pinyinClause)
	delFlagClause := elastic.NewMatchQuery("del_flag", 0)
	mustnotClause := elastic.NewTermsQueryFromStrings("_id", req.BlockedFromBeingSearchedList...)
	query := elastic.NewBoolQuery().Must(orClause, delFlagClause).MustNot(mustnotClause)

	res, err := es.clientMix.Search(es.getIndexStreamerAcct()).Query(query).From(req.Offset).Size(req.Limit).Sort("ct", true).Do(ctx)
	if err != nil {
		logger.Error("Search %v fail, err: %v", IndexStreamerAcct, err)
		return
	}

	for _, hit := range res.Hits.Hits {
		streameracct := &dbstruct.EsStreamerAcct{}
		err = json.Unmarshal(hit.Source, streameracct)
		if err != nil {
			logger.Error("json Unmarshal fail, err: %v", err)
			return
		}
		list = append(list, streameracct)
	}

	return
}

func (es *ElasticSearch) GetStreamerAcctListFuzzilyByUserId(ctx *gin.Context, req *streameracctproto.OpListFuzzilyByUserIdReq) (list []*dbstruct.EsStreamerAcct, err error) {

	list = make([]*dbstruct.EsStreamerAcct, 0)

	var nameClause elastic.Query
	var userIdStringClause elastic.Query
	// 查询文字长度小于短语匹配的，进行Term匹配，否则进行短语匹配
	len := 0
	for _, char := range req.UserIdString {
		if unicode.Is(unicode.Han, char) {
			len++
		} else {
			len++
		}
	}
	if len < consts.StreamerAcct_MatchPhraseLen {
		nameClause = elastic.NewTermQuery("name.short_char", req.UserIdString)
		userIdStringClause = elastic.NewTermQuery("user_id_string.short_char", req.UserIdString)
	} else {
		nameClause = elastic.NewMatchPhraseQuery("name.long_char", req.UserIdString)
		userIdStringClause = elastic.NewMatchPhraseQuery("user_id_string.long_char", req.UserIdString)
	}
	orClause := elastic.NewBoolQuery().Should(nameClause, userIdStringClause)
	delFlagClause := elastic.NewMatchQuery("del_flag", 0)
	mustnotClause := elastic.NewTermsQueryFromStrings("_id", req.BlockedFromBeingSearchedList...)
	query := elastic.NewBoolQuery().Must(orClause, delFlagClause).MustNot(mustnotClause)

	res, err := es.clientMix.Search(es.getIndexStreamerAcct()).Query(query).From(req.Offset).Size(req.Limit).Sort("ct", true).Do(ctx)
	if err != nil {
		logger.Error("Search %v fail, err: %v", IndexStreamerAcct, err)
		return
	}

	for _, hit := range res.Hits.Hits {
		streameracct := &dbstruct.EsStreamerAcct{}
		err = json.Unmarshal(hit.Source, streameracct)
		if err != nil {
			logger.Error("json Unmarshal fail, err: %v", err)
			return
		}
		list = append(list, streameracct)
	}

	return
}

func (es *ElasticSearch) FilterStreamerAcctList(ctx *gin.Context, req *streameracctproto.OpFilterReq) (list []*dbstruct.EsStreamerAcct, scorelist []float64, fullscore float64, err error) {

	list = make([]*dbstruct.EsStreamerAcct, 0)
	scorelist = make([]float64, 0)
	fullscore = 0

	// 查询范围
	delFlagClause := elastic.NewMatchQuery("del_flag", 0)
	mustnotClause := elastic.NewTermsQueryFromStrings("_id", req.BlockedFromBeingSearchedList...)
	condition := elastic.NewBoolQuery().Must(delFlagClause).MustNot(mustnotClause).Boost(1.0)

	// 建立得分机制
	funcScoreQuery := elastic.NewFunctionScoreQuery().Query(condition)
	funcScoreQuery.ScoreMode("sum")
	funcScoreQuery.BoostMode("replace")
	funcScoreQuery.MinScore(0)
	funcScoreQuery.MaxBoost(3.4028235e38)
	funcScoreQuery.Boost(1.0)

	// 写入关于年龄、粉丝量、身高、体重、微信价格、空间价格的高斯衰减打分
	matchall := elastic.NewMatchAllQuery().Boost(1.0)
	agefunc := util.CreateGaussDecayFunction("age", req.Age, req.RefStreamerFilter.Age)
	fansfunc := util.CreateGaussDecayFunction("fans", req.Fans, req.RefStreamerFilter.Fans)
	heightfunc := util.CreateGaussDecayFunction("height", req.Height, req.RefStreamerFilter.Height)
	weightfunc := util.CreateGaussDecayFunction("weight", req.Weight, req.RefStreamerFilter.Weight)
	wechatcoinpricefunc := util.CreateGaussDecayFunction("wechat_coin_price", req.WechatCoinPrice, req.RefStreamerFilter.WechatCoinPrice)
	zoneadmissionpricefunc := util.CreateGaussDecayFunction("zone_admission_price", req.ZoneAdmissionPrice, req.RefStreamerFilter.ZoneAdmissionPrice)

	if agefunc != nil {
		funcScoreQuery.Add(matchall, agefunc)
		fullscore += req.RefStreamerFilter.Age.Weight
	}
	if fansfunc != nil {
		funcScoreQuery.Add(matchall, fansfunc)
		fullscore += req.RefStreamerFilter.Fans.Weight
	}
	if heightfunc != nil {
		funcScoreQuery.Add(matchall, heightfunc)
		fullscore += req.RefStreamerFilter.Height.Weight
	}
	if weightfunc != nil {
		funcScoreQuery.Add(matchall, weightfunc)
		fullscore += req.RefStreamerFilter.Weight.Weight
	}
	if wechatcoinpricefunc != nil {
		funcScoreQuery.Add(matchall, wechatcoinpricefunc)
		fullscore += req.RefStreamerFilter.WechatCoinPrice.Weight
	}
	if zoneadmissionpricefunc != nil {
		funcScoreQuery.Add(matchall, zoneadmissionpricefunc)
		fullscore += req.RefStreamerFilter.ZoneAdmissionPrice.Weight
	}

	// 写入关于城市、星座的脚本打分
	if req.City != nil && util.DerefString(req.City) != "" {
		funcScoreQuery.AddScoreFunc(util.CreateKeywordScriptScoreFunction("city", util.DerefString(req.City), req.RefStreamerFilter.CityWeight))
		fullscore += req.RefStreamerFilter.CityWeight
	}
	if req.Constellation != nil && util.DerefString(req.Constellation) != "" {
		funcScoreQuery.AddScoreFunc(util.CreateKeywordScriptScoreFunction("constellation", util.DerefString(req.Constellation), req.RefStreamerFilter.ConstellationWeight))
		fullscore += req.RefStreamerFilter.ConstellationWeight
	}

	// 写入关于是否7日内有更新的脚本打分
	if req.IsActiveWithinAWeek != nil {
		isActiveWithinAWeek := util.DerefInt64(req.IsActiveWithinAWeek)
		if isActiveWithinAWeek == 1 {
			daystartBeforeAWeek := util.GetDayStartTimeStamp(time.Now()) - 7*86400 // 这是7日前的日始整点时间戳
			scriptStr := "doc['%s'].value >= %d ? %f : %f"
			script := elastic.NewScript(fmt.Sprintf(scriptStr, "last_zone_moment_create_day_start", daystartBeforeAWeek, 1.0, 0.0))
			funcScoreQuery.AddScoreFunc(elastic.NewScriptFunction(script).Weight(req.RefStreamerFilter.IsActiveWithinAWeekWeight))
			fullscore += req.RefStreamerFilter.IsActiveWithinAWeekWeight
		}
	}

	// 按得分倒序排列
	sortClause := elastic.NewScoreSort().Desc()

	source, _ := funcScoreQuery.Source()
	logger.Info(util.ToJson(source))

	res, err := es.clientMix.Search(es.getIndexStreamerAcct()).Query(funcScoreQuery).From(req.Offset).Size(req.Limit).SortBy(sortClause).Do(ctx)
	if err != nil {
		logger.Error("Search %v fail, err: %v", IndexStreamerAcct, err)
		return
	}

	for _, hit := range res.Hits.Hits {
		streameracct := &dbstruct.EsStreamerAcct{}
		err = json.Unmarshal(hit.Source, streameracct)
		if err != nil {
			logger.Error("json Unmarshal fail, err: %v", err)
			return
		}
		list = append(list, streameracct)
		scorelist = append(scorelist, util.DerefFloat64(hit.Score))
	}

	return
}