// Copyright © 2023 OpenIM. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package controller

import (
	"fmt"
	"time"

	"github.com/redis/go-redis/v9"

	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/convert"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/db/cache"
	unRelationTb "github.com/OpenIMSDK/Open-IM-Server/pkg/common/db/table/unrelation"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/db/unrelation"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/kafka"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/log"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/prome"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"

	"context"
	"errors"

	"go.mongodb.org/mongo-driver/mongo"

	pbMsg "github.com/OpenIMSDK/Open-IM-Server/pkg/proto/msg"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/proto/sdkws"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
)

const (
	updateKeyMsg = iota
	updateKeyRevoke
)

type CommonMsgDatabase interface {
	// 批量插入消息
	BatchInsertChat2DB(ctx context.Context, conversationID string, msgs []*sdkws.MsgData, currentMaxSeq int64) error
	// 撤回消息
	RevokeMsg(ctx context.Context, conversationID string, seq int64, revoke *unRelationTb.RevokeModel) error
	// mark as read
	MarkSingleChatMsgsAsRead(ctx context.Context, userID string, conversationID string, seqs []int64) error
	// 刪除redis中消息缓存
	DeleteMessagesFromCache(ctx context.Context, conversationID string, seqs []int64) error
	DelUserDeleteMsgsList(ctx context.Context, conversationID string, seqs []int64)
	// incrSeq然后批量插入缓存
	BatchInsertChat2Cache(
		ctx context.Context,
		conversationID string,
		msgs []*sdkws.MsgData,
	) (seq int64, isNewConversation bool, err error)

	//  通过seqList获取mongo中写扩散消息
	GetMsgBySeqsRange(
		ctx context.Context,
		userID string,
		conversationID string,
		begin, end, num, userMaxSeq int64,
	) (minSeq int64, maxSeq int64, seqMsg []*sdkws.MsgData, err error)
	// 通过seqList获取大群在 mongo里面的消息
	GetMsgBySeqs(
		ctx context.Context,
		userID string,
		conversationID string,
		seqs []int64,
	) (minSeq int64, maxSeq int64, seqMsg []*sdkws.MsgData, err error)
	// 删除会话消息重置最小seq， remainTime为消息保留的时间单位秒,超时消息删除， 传0删除所有消息(此方法不删除redis cache)
	DeleteConversationMsgsAndSetMinSeq(ctx context.Context, conversationID string, remainTime int64) error
	// 用户根据seq删除消息
	DeleteUserMsgsBySeqs(ctx context.Context, userID string, conversationID string, seqs []int64) error
	// 物理删除消息置空
	DeleteMsgsPhysicalBySeqs(ctx context.Context, conversationID string, seqs []int64) error

	SetMaxSeq(ctx context.Context, conversationID string, maxSeq int64) error
	GetMaxSeqs(ctx context.Context, conversationIDs []string) (map[string]int64, error)
	GetMaxSeq(ctx context.Context, conversationID string) (int64, error)
	SetMinSeq(ctx context.Context, conversationID string, minSeq int64) error
	SetMinSeqs(ctx context.Context, seqs map[string]int64) error

	GetMinSeqs(ctx context.Context, conversationIDs []string) (map[string]int64, error)
	GetMinSeq(ctx context.Context, conversationID string) (int64, error)
	GetConversationUserMinSeq(ctx context.Context, conversationID string, userID string) (int64, error)
	GetConversationUserMinSeqs(ctx context.Context, conversationID string, userIDs []string) (map[string]int64, error)
	SetConversationUserMinSeq(ctx context.Context, conversationID string, userID string, minSeq int64) error
	SetConversationUserMinSeqs(ctx context.Context, conversationID string, seqs map[string]int64) (err error)
	SetUserConversationsMinSeqs(ctx context.Context, userID string, seqs map[string]int64) (err error)
	SetHasReadSeq(ctx context.Context, userID string, conversationID string, hasReadSeq int64) error
	GetHasReadSeqs(ctx context.Context, userID string, conversationIDs []string) (map[string]int64, error)
	GetHasReadSeq(ctx context.Context, userID string, conversationID string) (int64, error)
	UserSetHasReadSeqs(ctx context.Context, userID string, hasReadSeqs map[string]int64) error

	GetMongoMaxAndMinSeq(ctx context.Context, conversationID string) (maxSeq, minSeq int64, err error)
	GetConversationMinMaxSeqInMongoAndCache(
		ctx context.Context,
		conversationID string,
	) (minSeqMongo, maxSeqMongo, minSeqCache, maxSeqCache int64, err error)
	SetSendMsgStatus(ctx context.Context, id string, status int32) error
	GetSendMsgStatus(ctx context.Context, id string) (int32, error)

	// to mq
	MsgToMQ(ctx context.Context, key string, msg2mq *sdkws.MsgData) error
	MsgToModifyMQ(ctx context.Context, key, conversarionID string, msgs []*sdkws.MsgData) error
	MsgToPushMQ(ctx context.Context, key, conversarionID string, msg2mq *sdkws.MsgData) (int32, int64, error)
	MsgToMongoMQ(ctx context.Context, key, conversarionID string, msgs []*sdkws.MsgData, lastSeq int64) error

	// modify
	JudgeMessageReactionExist(ctx context.Context, clientMsgID string, sessionType int32) (bool, error)
	SetMessageTypeKeyValue(ctx context.Context, clientMsgID string, sessionType int32, typeKey, value string) error
	SetMessageReactionExpire(
		ctx context.Context,
		clientMsgID string,
		sessionType int32,
		expiration time.Duration,
	) (bool, error)
	GetExtendMsg(
		ctx context.Context,
		conversationID string,
		sessionType int32,
		clientMsgID string,
		maxMsgUpdateTime int64,
	) (*pbMsg.ExtendMsg, error)
	InsertOrUpdateReactionExtendMsgSet(
		ctx context.Context,
		conversationID string,
		sessionType int32,
		clientMsgID string,
		msgFirstModifyTime int64,
		reactionExtensionList map[string]*sdkws.KeyValue,
	) error
	GetMessageTypeKeyValue(ctx context.Context, clientMsgID string, sessionType int32, typeKey string) (string, error)
	GetOneMessageAllReactionList(ctx context.Context, clientMsgID string, sessionType int32) (map[string]string, error)
	DeleteOneMessageKey(ctx context.Context, clientMsgID string, sessionType int32, subKey string) error
	DeleteReactionExtendMsgSet(
		ctx context.Context,
		conversationID string,
		sessionType int32,
		clientMsgID string,
		msgFirstModifyTime int64,
		reactionExtensionList map[string]*sdkws.KeyValue,
	) error
}

func NewCommonMsgDatabase(msgDocModel unRelationTb.MsgDocModelInterface, cacheModel cache.MsgModel) CommonMsgDatabase {
	return &commonMsgDatabase{
		msgDocDatabase:   msgDocModel,
		cache:            cacheModel,
		producer:         kafka.NewKafkaProducer(config.Config.Kafka.Addr, config.Config.Kafka.LatestMsgToRedis.Topic),
		producerToMongo:  kafka.NewKafkaProducer(config.Config.Kafka.Addr, config.Config.Kafka.MsgToMongo.Topic),
		producerToPush:   kafka.NewKafkaProducer(config.Config.Kafka.Addr, config.Config.Kafka.MsgToPush.Topic),
		producerToModify: kafka.NewKafkaProducer(config.Config.Kafka.Addr, config.Config.Kafka.MsgToModify.Topic),
	}
}

func InitCommonMsgDatabase(rdb redis.UniversalClient, database *mongo.Database) CommonMsgDatabase {
	cacheModel := cache.NewMsgCacheModel(rdb)
	msgDocModel := unrelation.NewMsgMongoDriver(database)
	CommonMsgDatabase := NewCommonMsgDatabase(msgDocModel, cacheModel)
	return CommonMsgDatabase
}

type commonMsgDatabase struct {
	msgDocDatabase    unRelationTb.MsgDocModelInterface
	extendMsgDatabase unRelationTb.ExtendMsgSetModelInterface
	extendMsgSetModel unRelationTb.ExtendMsgSetModel
	msg               unRelationTb.MsgDocModel
	cache             cache.MsgModel
	producer          *kafka.Producer
	producerToMongo   *kafka.Producer
	producerToModify  *kafka.Producer
	producerToPush    *kafka.Producer
}

func (db *commonMsgDatabase) MsgToMQ(ctx context.Context, key string, msg2mq *sdkws.MsgData) error {
	_, _, err := db.producer.SendMessage(ctx, key, msg2mq)
	return err
}

func (db *commonMsgDatabase) MsgToModifyMQ(
	ctx context.Context,
	key, conversationID string,
	messages []*sdkws.MsgData,
) error {
	if len(messages) > 0 {
		_, _, err := db.producerToModify.SendMessage(
			ctx,
			key,
			&pbMsg.MsgDataToModifyByMQ{ConversationID: conversationID, Messages: messages},
		)
		return err
	}
	return nil
}

func (db *commonMsgDatabase) MsgToPushMQ(
	ctx context.Context,
	key, conversationID string,
	msg2mq *sdkws.MsgData,
) (int32, int64, error) {
	partition, offset, err := db.producerToPush.SendMessage(
		ctx,
		key,
		&pbMsg.PushMsgDataToMQ{MsgData: msg2mq, ConversationID: conversationID},
	)
	if err != nil {
		log.ZError(ctx, "MsgToPushMQ", err, "key", key, "msg2mq", msg2mq)
		return 0, 0, err
	}
	return partition, offset, nil
}

func (db *commonMsgDatabase) MsgToMongoMQ(
	ctx context.Context,
	key, conversationID string,
	messages []*sdkws.MsgData,
	lastSeq int64,
) error {
	if len(messages) > 0 {
		_, _, err := db.producerToMongo.SendMessage(
			ctx,
			key,
			&pbMsg.MsgDataToMongoByMQ{LastSeq: lastSeq, ConversationID: conversationID, MsgData: messages},
		)
		return err
	}
	return nil
}

func (db *commonMsgDatabase) BatchInsertBlock(
	ctx context.Context,
	conversationID string,
	fields []any,
	key int8,
	firstSeq int64,
) error {
	if len(fields) == 0 {
		return nil
	}
	num := db.msg.GetSingleGocMsgNum()
	//num = 100
	for i, field := range fields { // 检查类型
		var ok bool
		switch key {
		case updateKeyMsg:
			var msg *unRelationTb.MsgDataModel
			msg, ok = field.(*unRelationTb.MsgDataModel)
			if msg != nil && msg.Seq != firstSeq+int64(i) {
				return errs.ErrInternalServer.Wrap("seq is invalid")
			}
		case updateKeyRevoke:
			_, ok = field.(*unRelationTb.RevokeModel)
		default:
			return errs.ErrInternalServer.Wrap("key is invalid")
		}
		if !ok {
			return errs.ErrInternalServer.Wrap("field type is invalid")
		}
	}
	// 返回值为true表示数据库存在该文档，false表示数据库不存在该文档
	updateMsgModel := func(seq int64, i int) (bool, error) {
		var (
			res *mongo.UpdateResult
			err error
		)
		docID := db.msg.GetDocID(conversationID, seq)
		index := db.msg.GetMsgIndex(seq)
		field := fields[i]
		switch key {
		case updateKeyMsg:
			res, err = db.msgDocDatabase.UpdateMsg(ctx, docID, index, "msg", field)
		case updateKeyRevoke:
			res, err = db.msgDocDatabase.UpdateMsg(ctx, docID, index, "revoke", field)
		}
		if err != nil {
			return false, err
		}
		return res.MatchedCount > 0, nil
	}
	tryUpdate := true
	for i := 0; i < len(fields); i++ {
		seq := firstSeq + int64(i) // 当前seq
		if tryUpdate {
			matched, err := updateMsgModel(seq, i)
			if err != nil {
				return err
			}
			if matched {
				continue // 匹配到了，继续下一个(不一定修改)
			}
		}
		doc := unRelationTb.MsgDocModel{
			DocID: db.msg.GetDocID(conversationID, seq),
			Msg:   make([]*unRelationTb.MsgInfoModel, num),
		}
		var insert int // 插入的数量
		for j := i; j < len(fields); j++ {
			seq = firstSeq + int64(j)
			if db.msg.GetDocID(conversationID, seq) != doc.DocID {
				break
			}
			insert++
			switch key {
			case updateKeyMsg:
				doc.Msg[db.msg.GetMsgIndex(seq)] = &unRelationTb.MsgInfoModel{
					Msg: fields[j].(*unRelationTb.MsgDataModel),
				}
			case updateKeyRevoke:
				doc.Msg[db.msg.GetMsgIndex(seq)] = &unRelationTb.MsgInfoModel{
					Revoke: fields[j].(*unRelationTb.RevokeModel),
				}
			}
		}
		for i, model := range doc.Msg {
			if model == nil {
				model = &unRelationTb.MsgInfoModel{}
				doc.Msg[i] = model
			}
			if model.DelList == nil {
				doc.Msg[i].DelList = []string{}
			}
		}
		if err := db.msgDocDatabase.Create(ctx, &doc); err != nil {
			if mongo.IsDuplicateKeyError(err) {
				i--              // 存在并发,重试当前数据
				tryUpdate = true // 以修改模式
				continue
			}
			return err
		}
		tryUpdate = false // 当前以插入成功,下一块优先插入模式
		i += insert - 1   // 跳过已插入的数据
	}
	return nil
}

func (db *commonMsgDatabase) BatchInsertChat2DB(
	ctx context.Context,
	conversationID string,
	msgList []*sdkws.MsgData,
	currentMaxSeq int64,
) error {
	if len(msgList) == 0 {
		return errs.ErrArgs.Wrap("msgList is empty")
	}
	msgs := make([]any, len(msgList))
	for i, msg := range msgList {
		if msg == nil {
			continue
		}
		var offlinePushModel *unRelationTb.OfflinePushModel
		if msg.OfflinePushInfo != nil {
			offlinePushModel = &unRelationTb.OfflinePushModel{
				Title:         msg.OfflinePushInfo.Title,
				Desc:          msg.OfflinePushInfo.Desc,
				Ex:            msg.OfflinePushInfo.Ex,
				IOSPushSound:  msg.OfflinePushInfo.IOSPushSound,
				IOSBadgeCount: msg.OfflinePushInfo.IOSBadgeCount,
			}
		}
		msgs[i] = &unRelationTb.MsgDataModel{
			SendID:           msg.SendID,
			RecvID:           msg.RecvID,
			GroupID:          msg.GroupID,
			ClientMsgID:      msg.ClientMsgID,
			ServerMsgID:      msg.ServerMsgID,
			SenderPlatformID: msg.SenderPlatformID,
			SenderNickname:   msg.SenderNickname,
			SenderFaceURL:    msg.SenderFaceURL,
			SessionType:      msg.SessionType,
			MsgFrom:          msg.MsgFrom,
			ContentType:      msg.ContentType,
			Content:          string(msg.Content),
			Seq:              msg.Seq,
			SendTime:         msg.SendTime,
			CreateTime:       msg.CreateTime,
			Status:           msg.Status,
			Options:          msg.Options,
			OfflinePush:      offlinePushModel,
			AtUserIDList:     msg.AtUserIDList,
			AttachedInfo:     msg.AttachedInfo,
			Ex:               msg.Ex,
		}
	}
	return db.BatchInsertBlock(ctx, conversationID, msgs, updateKeyMsg, msgList[0].Seq)
}

func (db *commonMsgDatabase) RevokeMsg(
	ctx context.Context,
	conversationID string,
	seq int64,
	revoke *unRelationTb.RevokeModel,
) error {
	return db.BatchInsertBlock(ctx, conversationID, []any{revoke}, updateKeyRevoke, seq)
}

func (db *commonMsgDatabase) MarkSingleChatMsgsAsRead(
	ctx context.Context,
	userID string,
	conversationID string,
	totalSeqs []int64,
) error {
	for docID, seqs := range db.msg.GetDocIDSeqsMap(conversationID, totalSeqs) {
		var indexes []int64
		for _, seq := range seqs {
			indexes = append(indexes, db.msg.GetMsgIndex(seq))
		}
		log.ZDebug(ctx, "MarkSingleChatMsgsAsRead", "userID", userID, "docID", docID, "indexes", indexes)
		if err := db.msgDocDatabase.MarkSingleChatMsgsAsRead(ctx, userID, docID, indexes); err != nil {
			log.ZError(ctx, "MarkSingleChatMsgsAsRead", err, "userID", userID, "docID", docID, "indexes", indexes)
			return err
		}
	}
	return nil
}

func (db *commonMsgDatabase) DeleteMessagesFromCache(ctx context.Context, conversationID string, seqs []int64) error {
	return db.cache.DeleteMessages(ctx, conversationID, seqs)
}

func (db *commonMsgDatabase) DelUserDeleteMsgsList(ctx context.Context, conversationID string, seqs []int64) {
	db.cache.DelUserDeleteMsgsList(ctx, conversationID, seqs)
}

func (db *commonMsgDatabase) BatchInsertChat2Cache(
	ctx context.Context,
	conversationID string,
	msgs []*sdkws.MsgData,
) (seq int64, isNew bool, err error) {
	currentMaxSeq, err := db.cache.GetMaxSeq(ctx, conversationID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		prome.Inc(prome.SeqGetFailedCounter)
		return 0, false, err
	}
	prome.Inc(prome.SeqGetSuccessCounter)
	lenList := len(msgs)
	if int64(lenList) > db.msg.GetSingleGocMsgNum() {
		return 0, false, errors.New("too large")
	}
	if lenList < 1 {
		return 0, false, errors.New("too short as 0")
	}
	if errs.Unwrap(err) == redis.Nil {
		isNew = true
	}
	lastMaxSeq := currentMaxSeq
	userSeqMap := make(map[string]int64)
	for _, m := range msgs {
		currentMaxSeq++
		m.Seq = currentMaxSeq
		userSeqMap[m.SendID] = m.Seq
	}
	failedNum, err := db.cache.SetMessageToCache(ctx, conversationID, msgs)
	if err != nil {
		prome.Add(prome.MsgInsertRedisFailedCounter, failedNum)
		log.ZError(ctx, "setMessageToCache error", err, "len", len(msgs), "conversationID", conversationID)
	} else {
		prome.Inc(prome.MsgInsertRedisSuccessCounter)
	}
	err = db.cache.SetMaxSeq(ctx, conversationID, currentMaxSeq)
	if err != nil {
		prome.Inc(prome.SeqSetFailedCounter)
	} else {
		prome.Inc(prome.SeqSetSuccessCounter)
	}
	err2 := db.cache.SetHasReadSeqs(ctx, conversationID, userSeqMap)
	if err != nil {
		log.ZError(ctx, "SetHasReadSeqs error", err2, "userSeqMap", userSeqMap, "conversationID", conversationID)
		prome.Inc(prome.SeqSetFailedCounter)
	} else {
		prome.Inc(prome.SeqSetSuccessCounter)
	}
	return lastMaxSeq, isNew, utils.Wrap(err, "")
}

func (db *commonMsgDatabase) getMsgBySeqs(
	ctx context.Context,
	userID, conversationID string,
	seqs []int64,
) (totalMsgs []*sdkws.MsgData, err error) {
	for docID, seqs := range db.msg.GetDocIDSeqsMap(conversationID, seqs) {
		//log.ZDebug(ctx, "getMsgBySeqs", "docID", docID, "seqs", seqs)
		msgs, err := db.findMsgInfoBySeq(ctx, userID, docID, seqs)
		if err != nil {
			return nil, err
		}
		for _, msg := range msgs {
			totalMsgs = append(totalMsgs, convert.MsgDB2Pb(msg.Msg))
		}
	}
	return totalMsgs, nil
}

// func (db *commonMsgDatabase) refetchDelSeqsMsgs(ctx context.Context, conversationID string, delNums, rangeBegin,
// begin int64) (seqMsgs []*unRelationTb.MsgDataModel, err error) {
// 	var reFetchSeqs []int64
// 	if delNums > 0 {
// 		newBeginSeq := rangeBegin - delNums
// 		if newBeginSeq >= begin {
// 			newEndSeq := rangeBegin - 1
// 			for i := newBeginSeq; i <= newEndSeq; i++ {
// 				reFetchSeqs = append(reFetchSeqs, i)
// 			}
// 		}
// 	}
// 	if len(reFetchSeqs) == 0 {
// 		return
// 	}
// 	if len(reFetchSeqs) > 0 {
// 		m := db.msg.GetDocIDSeqsMap(conversationID, reFetchSeqs)
// 		for docID, seqs := range m {
// 			msgs, _, err := db.findMsgInfoBySeq(ctx, docID, seqs)
// 			if err != nil {
// 				return nil, err
// 			}
// 			for _, msg := range msgs {
// 				if msg.Status != constant.MsgDeleted {
// 					seqMsgs = append(seqMsgs, msg)
// 				}
// 			}
// 		}
// 	}
// 	if len(seqMsgs) < int(delNums) {
// 		seqMsgs2, err := db.refetchDelSeqsMsgs(ctx, conversationID, delNums-int64(len(seqMsgs)), rangeBegin-1, begin)
// 		if err != nil {
// 			return seqMsgs, err
// 		}
// 		seqMsgs = append(seqMsgs, seqMsgs2...)
// 	}
// 	return seqMsgs, nil
// }

func (db *commonMsgDatabase) findMsgInfoBySeq(
	ctx context.Context,
	userID, docID string,
	seqs []int64,
) (totalMsgs []*unRelationTb.MsgInfoModel, err error) {
	msgs, err := db.msgDocDatabase.GetMsgBySeqIndexIn1Doc(ctx, userID, docID, seqs)
	for _, msg := range msgs {
		if msg.IsRead {
			msg.Msg.IsRead = true
		}
	}
	return msgs, err
}

func (db *commonMsgDatabase) getMsgBySeqsRange(
	ctx context.Context,
	userID string,
	conversationID string,
	allSeqs []int64,
	begin, end int64,
) (seqMsgs []*sdkws.MsgData, err error) {
	log.ZDebug(
		ctx,
		"getMsgBySeqsRange",
		"conversationID",
		conversationID,
		"allSeqs",
		allSeqs,
		"begin",
		begin,
		"end",
		end,
	)
	for docID, seqs := range db.msg.GetDocIDSeqsMap(conversationID, allSeqs) {
		log.ZDebug(ctx, "getMsgBySeqsRange", "docID", docID, "seqs", seqs)
		msgs, err := db.findMsgInfoBySeq(ctx, userID, docID, seqs)
		if err != nil {
			return nil, err
		}
		for _, msg := range msgs {
			if msg.IsRead {
				msg.Msg.IsRead = true
			}
			seqMsgs = append(seqMsgs, convert.MsgDB2Pb(msg.Msg))
		}
	}
	return seqMsgs, nil
}

func (db *commonMsgDatabase) GetMsgBySeqsRange(
	ctx context.Context,
	userID string,
	conversationID string,
	begin, end, num, userMaxSeq int64,
) (int64, int64, []*sdkws.MsgData, error) {
	userMinSeq, err := db.cache.GetConversationUserMinSeq(ctx, conversationID, userID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		return 0, 0, nil, err
	}
	minSeq, err := db.cache.GetMinSeq(ctx, conversationID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		return 0, 0, nil, err
	}
	if userMinSeq > minSeq {
		minSeq = userMinSeq
	}
	if minSeq > end {
		log.ZInfo(ctx, "minSeq > end", "minSeq", minSeq, "end", end)
		return 0, 0, nil, nil
	}
	maxSeq, err := db.cache.GetMaxSeq(ctx, conversationID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		return 0, 0, nil, err
	}
	log.ZDebug(
		ctx,
		"GetMsgBySeqsRange",
		"userMinSeq",
		userMinSeq,
		"conMinSeq",
		minSeq,
		"conMaxSeq",
		maxSeq,
		"userMaxSeq",
		userMaxSeq,
	)
	if userMaxSeq != 0 {
		if userMaxSeq < maxSeq {
			maxSeq = userMaxSeq
		}
	}
	if begin < minSeq {
		begin = minSeq
	}
	if end > maxSeq {
		end = maxSeq
	}
	if end < begin {
		return 0, 0, nil, errs.ErrArgs.Wrap("seq end < begin")
	}
	var seqs []int64
	for i := end; i > end-num; i-- {
		if i >= begin {
			seqs = append([]int64{i}, seqs...)
		} else {
			break
		}
	}
	if len(seqs) == 0 {
		return 0, 0, nil, nil
	}
	newBegin := seqs[0]
	newEnd := seqs[len(seqs)-1]
	log.ZDebug(ctx, "GetMsgBySeqsRange", "first seqs", seqs, "newBegin", newBegin, "newEnd", newEnd)
	cachedMsgs, failedSeqs, err := db.cache.GetMessagesBySeq(ctx, conversationID, seqs)
	if err != nil {
		if err != redis.Nil {
			prome.Add(prome.MsgPullFromRedisFailedCounter, len(failedSeqs))
			log.ZError(ctx, "get message from redis exception", err, "conversationID", conversationID, "seqs", seqs)
		}
	}
	var successMsgs []*sdkws.MsgData
	if len(cachedMsgs) > 0 {
		delSeqs, err := db.cache.GetUserDelList(ctx, userID, conversationID)
		if err != nil && errs.Unwrap(err) != redis.Nil {
			return 0, 0, nil, err
		}
		var cacheDelNum int
		for _, msg := range cachedMsgs {
			if !utils.Contain(msg.Seq, delSeqs...) {
				successMsgs = append(successMsgs, msg)
			} else {
				cacheDelNum += 1
			}
		}
		log.ZDebug(
			ctx,
			"get delSeqs from redis",
			"delSeqs",
			delSeqs,
			"userID",
			userID,
			"conversationID",
			conversationID,
			"cacheDelNum",
			cacheDelNum,
		)
		var reGetSeqsCache []int64
		for i := 1; i <= cacheDelNum; {
			newSeq := newBegin - int64(i)
			if newSeq >= begin {
				if !utils.Contain(newSeq, delSeqs...) {
					log.ZDebug(ctx, "seq del in cache, a new seq in range append", "new seq", newSeq)
					reGetSeqsCache = append(reGetSeqsCache, newSeq)
					i++
				}
			} else {
				break
			}
		}
		if len(reGetSeqsCache) > 0 {
			log.ZDebug(ctx, "reGetSeqsCache", "reGetSeqsCache", reGetSeqsCache)
			cachedMsgs, failedSeqs2, err := db.cache.GetMessagesBySeq(ctx, conversationID, reGetSeqsCache)
			if err != nil {
				if err != redis.Nil {
					prome.Add(prome.MsgPullFromRedisFailedCounter, len(failedSeqs2))
					log.ZError(
						ctx,
						"get message from redis exception",
						err,
						"conversationID",
						conversationID,
						"seqs",
						reGetSeqsCache,
					)
				}
			}
			failedSeqs = append(failedSeqs, failedSeqs2...)
			successMsgs = append(successMsgs, cachedMsgs...)
		}
	}
	log.ZDebug(ctx, "get msgs from cache", "successMsgs", successMsgs)
	if len(failedSeqs) != 0 {
		log.ZDebug(ctx, "msgs not exist in redis", "seqs", failedSeqs)
	}
	// get from cache or db
	prome.Add(prome.MsgPullFromRedisSuccessCounter, len(successMsgs))
	if len(failedSeqs) > 0 {
		mongoMsgs, err := db.getMsgBySeqsRange(ctx, userID, conversationID, failedSeqs, begin, end)
		if err != nil {
			prome.Add(prome.MsgPullFromMongoFailedCounter, len(failedSeqs))
			return 0, 0, nil, err
		}
		prome.Add(prome.MsgPullFromMongoSuccessCounter, len(mongoMsgs))
		successMsgs = append(successMsgs, mongoMsgs...)
	}

	return minSeq, maxSeq, successMsgs, nil
}

func (db *commonMsgDatabase) GetMsgBySeqs(
	ctx context.Context,
	userID string,
	conversationID string,
	seqs []int64,
) (int64, int64, []*sdkws.MsgData, error) {
	userMinSeq, err := db.cache.GetConversationUserMinSeq(ctx, conversationID, userID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		return 0, 0, nil, err
	}
	minSeq, err := db.cache.GetMinSeq(ctx, conversationID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		return 0, 0, nil, err
	}
	maxSeq, err := db.cache.GetMaxSeq(ctx, conversationID)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		return 0, 0, nil, err
	}
	if userMinSeq < minSeq {
		minSeq = userMinSeq
	}
	var newSeqs []int64
	for _, seq := range seqs {
		if seq >= minSeq && seq <= maxSeq {
			newSeqs = append(newSeqs, seq)
		}
	}
	successMsgs, failedSeqs, err := db.cache.GetMessagesBySeq(ctx, conversationID, newSeqs)
	if err != nil {
		if err != redis.Nil {
			prome.Add(prome.MsgPullFromRedisFailedCounter, len(failedSeqs))
			log.ZError(
				ctx,
				"get message from redis exception",
				err,
				"failedSeqs",
				failedSeqs,
				"conversationID",
				conversationID,
			)
		}
	}
	log.ZInfo(
		ctx,
		"db.cache.GetMessagesBySeq",
		"userID",
		userID,
		"conversationID",
		conversationID,
		"seqs",
		seqs,
		"successMsgs",
		len(successMsgs),
		"failedSeqs",
		failedSeqs,
		"conversationID",
		conversationID,
	)
	prome.Add(prome.MsgPullFromRedisSuccessCounter, len(successMsgs))
	if len(failedSeqs) > 0 {
		mongoMsgs, err := db.getMsgBySeqs(ctx, userID, conversationID, failedSeqs)
		if err != nil {
			prome.Add(prome.MsgPullFromMongoFailedCounter, len(failedSeqs))
			return 0, 0, nil, err
		}
		prome.Add(prome.MsgPullFromMongoSuccessCounter, len(mongoMsgs))
		successMsgs = append(successMsgs, mongoMsgs...)
	}
	return minSeq, maxSeq, successMsgs, nil
}

func (db *commonMsgDatabase) DeleteConversationMsgsAndSetMinSeq(
	ctx context.Context,
	conversationID string,
	remainTime int64,
) error {
	var delStruct delMsgRecursionStruct
	var skip int64
	minSeq, err := db.deleteMsgRecursion(ctx, conversationID, skip, &delStruct, remainTime)
	if err != nil {
		return err
	}
	log.ZInfo(ctx, "DeleteConversationMsgsAndSetMinSeq", "conversationID", conversationID, "minSeq", minSeq)
	if minSeq == 0 {
		return nil
	}
	if remainTime == 0 {
		err = db.cache.CleanUpOneConversationAllMsg(ctx, conversationID)
		if err != nil {
			log.ZWarn(ctx, "CleanUpOneUserAllMsg", err, "conversationID", conversationID)
		}
	}
	return db.cache.SetMinSeq(ctx, conversationID, minSeq)
}

// this is struct for recursion
type delMsgRecursionStruct struct {
	minSeq    int64
	delDocIDs []string
}

func (d *delMsgRecursionStruct) getSetMinSeq() int64 {
	return d.minSeq
}

// index 0....19(del) 20...69
// seq 70
// set minSeq 21
// recursion 删除list并且返回设置的最小seq
func (db *commonMsgDatabase) deleteMsgRecursion(
	ctx context.Context,
	conversationID string,
	index int64,
	delStruct *delMsgRecursionStruct,
	remainTime int64,
) (int64, error) {
	// find from oldest list
	msgDocModel, err := db.msgDocDatabase.GetMsgDocModelByIndex(ctx, conversationID, index, 1)
	if err != nil || msgDocModel.DocID == "" {
		if err != nil {
			if err == unrelation.ErrMsgListNotExist {
				log.ZDebug(
					ctx,
					"deleteMsgRecursion ErrMsgListNotExist",
					"conversationID",
					conversationID,
					"index:",
					index,
				)
			} else {
				log.ZError(ctx, "deleteMsgRecursion GetUserMsgListByIndex failed", err, "conversationID", conversationID, "index", index)
			}
		}
		// 获取报错，或者获取不到了，物理删除并且返回seq delMongoMsgsPhysical(delStruct.delDocIDList), 结束递归
		err = db.msgDocDatabase.DeleteDocs(ctx, delStruct.delDocIDs)
		if err != nil {
			return 0, err
		}
		return delStruct.getSetMinSeq() + 1, nil
	}
	log.ZDebug(
		ctx,
		"doc info",
		"conversationID",
		conversationID,
		"index",
		index,
		"docID",
		msgDocModel.DocID,
		"len",
		len(msgDocModel.Msg),
	)
	if int64(len(msgDocModel.Msg)) > db.msg.GetSingleGocMsgNum() {
		log.ZWarn(ctx, "msgs too large", nil, "lenth", len(msgDocModel.Msg), "docID:", msgDocModel.DocID)
	}
	if msgDocModel.IsFull() &&
		msgDocModel.Msg[len(msgDocModel.Msg)-1].Msg.SendTime+(remainTime*1000) < utils.GetCurrentTimestampByMill() {
		log.ZDebug(ctx, "doc is full and all msg is expired", "docID", msgDocModel.DocID)
		delStruct.delDocIDs = append(delStruct.delDocIDs, msgDocModel.DocID)
		delStruct.minSeq = msgDocModel.Msg[len(msgDocModel.Msg)-1].Msg.Seq
	} else {
		var hasMarkDelFlag bool
		var delMsgIndexs []int
		for i, MsgInfoModel := range msgDocModel.Msg {
			if MsgInfoModel != nil && MsgInfoModel.Msg != nil {
				if utils.GetCurrentTimestampByMill() > MsgInfoModel.Msg.SendTime+(remainTime*1000) {
					delMsgIndexs = append(delMsgIndexs, i)
					hasMarkDelFlag = true
				} else {
					// 到本条消息不需要删除, minSeq置为这条消息的seq
					if len(delStruct.delDocIDs) > 0 {
						log.ZDebug(ctx, "delete docs", "delDocIDs", delStruct.delDocIDs)
					}
					if err := db.msgDocDatabase.DeleteDocs(ctx, delStruct.delDocIDs); err != nil {
						return 0, err
					}
					if hasMarkDelFlag {
						log.ZDebug(ctx, "delete msg by index", "delMsgIndexs", delMsgIndexs, "docID", msgDocModel.DocID)
						// mark del all delMsgIndexs
						if err := db.msgDocDatabase.DeleteMsgsInOneDocByIndex(ctx, msgDocModel.DocID, delMsgIndexs); err != nil {
							return delStruct.getSetMinSeq(), err
						}
					}
					return MsgInfoModel.Msg.Seq, nil
				}
			}
		}
	}
	//  继续递归 index+1
	seq, err := db.deleteMsgRecursion(ctx, conversationID, index+1, delStruct, remainTime)
	return seq, err
}

func (db *commonMsgDatabase) DeleteMsgsPhysicalBySeqs(
	ctx context.Context,
	conversationID string,
	allSeqs []int64,
) error {
	if err := db.cache.DeleteMessages(ctx, conversationID, allSeqs); err != nil {
		return err
	}
	for docID, seqs := range db.msg.GetDocIDSeqsMap(conversationID, allSeqs) {
		var indexes []int
		for _, seq := range seqs {
			indexes = append(indexes, int(db.msg.GetMsgIndex(seq)))
		}
		if err := db.msgDocDatabase.DeleteMsgsInOneDocByIndex(ctx, docID, indexes); err != nil {
			return err
		}
	}
	return nil
}

func (db *commonMsgDatabase) DeleteUserMsgsBySeqs(
	ctx context.Context,
	userID string,
	conversationID string,
	seqs []int64,
) error {
	cachedMsgs, _, err := db.cache.GetMessagesBySeq(ctx, conversationID, seqs)
	if err != nil && errs.Unwrap(err) != redis.Nil {
		log.ZWarn(ctx, "DeleteUserMsgsBySeqs", err, "conversationID", conversationID, "seqs", seqs)
		return err
	}
	if len(cachedMsgs) > 0 {
		var cacheSeqs []int64
		for _, msg := range cachedMsgs {
			cacheSeqs = append(cacheSeqs, msg.Seq)
		}
		if err := db.cache.UserDeleteMsgs(ctx, conversationID, cacheSeqs, userID); err != nil {
			return err
		}
	}

	for docID, seqs := range db.msg.GetDocIDSeqsMap(conversationID, seqs) {
		for _, seq := range seqs {
			if _, err := db.msgDocDatabase.PushUnique(ctx, docID, db.msg.GetMsgIndex(seq), "del_list", []string{userID}); err != nil {
				return err
			}
		}
	}
	return nil
}

func (db *commonMsgDatabase) DeleteMsgsBySeqs(ctx context.Context, conversationID string, seqs []int64) error {
	return nil
}

func (db *commonMsgDatabase) CleanUpUserConversationsMsgs(ctx context.Context, user string, conversationIDs []string) {
	for _, conversationID := range conversationIDs {
		maxSeq, err := db.cache.GetMaxSeq(ctx, conversationID)
		if err != nil {
			if err == redis.Nil {
				log.ZInfo(ctx, "max seq is nil", "conversationID", conversationID)
			} else {
				log.ZError(ctx, "get max seq failed", err, "conversationID", conversationID)
			}
			continue
		}
		if err := db.cache.SetMinSeq(ctx, conversationID, maxSeq+1); err != nil {
			log.ZError(ctx, "set min seq failed", err, "conversationID", conversationID, "minSeq", maxSeq+1)
		}
	}
}

func (db *commonMsgDatabase) SetMaxSeq(ctx context.Context, conversationID string, maxSeq int64) error {
	return db.cache.SetMaxSeq(ctx, conversationID, maxSeq)
}
func (db *commonMsgDatabase) GetMaxSeqs(ctx context.Context, conversationIDs []string) (map[string]int64, error) {
	return db.cache.GetMaxSeqs(ctx, conversationIDs)
}
func (db *commonMsgDatabase) GetMaxSeq(ctx context.Context, conversationID string) (int64, error) {
	return db.cache.GetMaxSeq(ctx, conversationID)
}
func (db *commonMsgDatabase) SetMinSeq(ctx context.Context, conversationID string, minSeq int64) error {
	return db.cache.SetMinSeq(ctx, conversationID, minSeq)
}
func (db *commonMsgDatabase) SetMinSeqs(ctx context.Context, seqs map[string]int64) error {
	return db.cache.SetMinSeqs(ctx, seqs)
}

func (db *commonMsgDatabase) GetMinSeqs(ctx context.Context, conversationIDs []string) (map[string]int64, error) {
	return db.cache.GetMinSeqs(ctx, conversationIDs)
}
func (db *commonMsgDatabase) GetMinSeq(ctx context.Context, conversationID string) (int64, error) {
	return db.cache.GetMinSeq(ctx, conversationID)
}

func (db *commonMsgDatabase) GetConversationUserMinSeq(
	ctx context.Context,
	conversationID string,
	userID string,
) (int64, error) {
	return db.cache.GetConversationUserMinSeq(ctx, conversationID, userID)
}

func (db *commonMsgDatabase) GetConversationUserMinSeqs(
	ctx context.Context,
	conversationID string,
	userIDs []string,
) (map[string]int64, error) {
	return db.cache.GetConversationUserMinSeqs(ctx, conversationID, userIDs)
}

func (db *commonMsgDatabase) SetConversationUserMinSeq(
	ctx context.Context,
	conversationID string,
	userID string,
	minSeq int64,
) error {
	return db.cache.SetConversationUserMinSeq(ctx, conversationID, userID, minSeq)
}

func (db *commonMsgDatabase) SetConversationUserMinSeqs(
	ctx context.Context,
	conversationID string,
	seqs map[string]int64,
) (err error) {
	return db.cache.SetConversationUserMinSeqs(ctx, conversationID, seqs)
}

func (db *commonMsgDatabase) SetUserConversationsMinSeqs(
	ctx context.Context,
	userID string,
	seqs map[string]int64,
) error {
	return db.cache.SetUserConversationsMinSeqs(ctx, userID, seqs)
}

func (db *commonMsgDatabase) UserSetHasReadSeqs(
	ctx context.Context,
	userID string,
	hasReadSeqs map[string]int64,
) error {
	return db.cache.UserSetHasReadSeqs(ctx, userID, hasReadSeqs)
}

func (db *commonMsgDatabase) SetHasReadSeq(
	ctx context.Context,
	userID string,
	conversationID string,
	hasReadSeq int64,
) error {
	return db.cache.SetHasReadSeq(ctx, userID, conversationID, hasReadSeq)
}

func (db *commonMsgDatabase) GetHasReadSeqs(
	ctx context.Context,
	userID string,
	conversationIDs []string,
) (map[string]int64, error) {
	return db.cache.GetHasReadSeqs(ctx, userID, conversationIDs)
}

func (db *commonMsgDatabase) GetHasReadSeq(ctx context.Context, userID string, conversationID string) (int64, error) {
	return db.cache.GetHasReadSeq(ctx, userID, conversationID)
}

func (db *commonMsgDatabase) SetSendMsgStatus(ctx context.Context, id string, status int32) error {
	return db.cache.SetSendMsgStatus(ctx, id, status)
}

func (db *commonMsgDatabase) GetSendMsgStatus(ctx context.Context, id string) (int32, error) {
	return db.cache.GetSendMsgStatus(ctx, id)
}

func (db *commonMsgDatabase) GetConversationMinMaxSeqInMongoAndCache(
	ctx context.Context,
	conversationID string,
) (minSeqMongo, maxSeqMongo, minSeqCache, maxSeqCache int64, err error) {
	minSeqMongo, maxSeqMongo, err = db.GetMinMaxSeqMongo(ctx, conversationID)
	if err != nil {
		return
	}
	minSeqCache, err = db.cache.GetMinSeq(ctx, conversationID)
	if err != nil {
		return
	}
	maxSeqCache, err = db.cache.GetMaxSeq(ctx, conversationID)
	if err != nil {
		return
	}
	return
}

func (db *commonMsgDatabase) GetMongoMaxAndMinSeq(
	ctx context.Context,
	conversationID string,
) (maxSeq, minSeq int64, err error) {
	return db.GetMinMaxSeqMongo(ctx, conversationID)
}

func (db *commonMsgDatabase) GetMinMaxSeqMongo(
	ctx context.Context,
	conversationID string,
) (minSeqMongo, maxSeqMongo int64, err error) {
	oldestMsgMongo, err := db.msgDocDatabase.GetOldestMsg(ctx, conversationID)
	if err != nil {
		return
	}
	minSeqMongo = oldestMsgMongo.Msg.Seq
	newestMsgMongo, err := db.msgDocDatabase.GetNewestMsg(ctx, conversationID)
	if err != nil {
		return
	}
	maxSeqMongo = newestMsgMongo.Msg.Seq
	return
}

func (db *commonMsgDatabase) JudgeMessageReactionExist(
	ctx context.Context,
	clientMsgID string,
	sessionType int32,
) (bool, error) {
	return db.cache.JudgeMessageReactionExist(ctx, clientMsgID, sessionType)
}

func (db *commonMsgDatabase) SetMessageTypeKeyValue(
	ctx context.Context,
	clientMsgID string,
	sessionType int32,
	typeKey, value string,
) error {
	return db.cache.SetMessageTypeKeyValue(ctx, clientMsgID, sessionType, typeKey, value)
}

func (db *commonMsgDatabase) SetMessageReactionExpire(
	ctx context.Context,
	clientMsgID string,
	sessionType int32,
	expiration time.Duration,
) (bool, error) {
	return db.cache.SetMessageReactionExpire(ctx, clientMsgID, sessionType, expiration)
}

func (db *commonMsgDatabase) GetMessageTypeKeyValue(
	ctx context.Context,
	clientMsgID string,
	sessionType int32,
	typeKey string,
) (string, error) {
	return db.cache.GetMessageTypeKeyValue(ctx, clientMsgID, sessionType, typeKey)
}

func (db *commonMsgDatabase) GetOneMessageAllReactionList(
	ctx context.Context,
	clientMsgID string,
	sessionType int32,
) (map[string]string, error) {
	return db.cache.GetOneMessageAllReactionList(ctx, clientMsgID, sessionType)
}

func (db *commonMsgDatabase) DeleteOneMessageKey(
	ctx context.Context,
	clientMsgID string,
	sessionType int32,
	subKey string,
) error {
	return db.cache.DeleteOneMessageKey(ctx, clientMsgID, sessionType, subKey)
}

func (db *commonMsgDatabase) InsertOrUpdateReactionExtendMsgSet(
	ctx context.Context,
	conversationID string,
	sessionType int32,
	clientMsgID string,
	msgFirstModifyTime int64,
	reactionExtensions map[string]*sdkws.KeyValue,
) error {
	return db.extendMsgDatabase.InsertOrUpdateReactionExtendMsgSet(
		ctx,
		conversationID,
		sessionType,
		clientMsgID,
		msgFirstModifyTime,
		db.extendMsgSetModel.Pb2Model(reactionExtensions),
	)
}

func (db *commonMsgDatabase) GetExtendMsg(
	ctx context.Context,
	conversationID string,
	sessionType int32,
	clientMsgID string,
	maxMsgUpdateTime int64,
) (*pbMsg.ExtendMsg, error) {
	extendMsgSet, err := db.extendMsgDatabase.GetExtendMsgSet(ctx, conversationID, sessionType, maxMsgUpdateTime)
	if err != nil {
		return nil, err
	}
	extendMsg, ok := extendMsgSet.ExtendMsgs[clientMsgID]
	if !ok {
		return nil, errs.ErrRecordNotFound.Wrap(fmt.Sprintf("cant find client msg id: %s", clientMsgID))
	}
	reactionExtensionList := make(map[string]*pbMsg.KeyValueResp)
	for key, model := range extendMsg.ReactionExtensionList {
		reactionExtensionList[key] = &pbMsg.KeyValueResp{
			KeyValue: &sdkws.KeyValue{
				TypeKey:          model.TypeKey,
				Value:            model.Value,
				LatestUpdateTime: model.LatestUpdateTime,
			},
		}
	}
	return &pbMsg.ExtendMsg{
		ReactionExtensions: reactionExtensionList,
		ClientMsgID:        extendMsg.ClientMsgID,
		MsgFirstModifyTime: extendMsg.MsgFirstModifyTime,
		AttachedInfo:       extendMsg.AttachedInfo,
		Ex:                 extendMsg.Ex,
	}, nil
}

func (db *commonMsgDatabase) DeleteReactionExtendMsgSet(
	ctx context.Context,
	conversationID string,
	sessionType int32,
	clientMsgID string,
	msgFirstModifyTime int64,
	reactionExtensions map[string]*sdkws.KeyValue,
) error {
	return db.extendMsgDatabase.DeleteReactionExtendMsgSet(
		ctx,
		conversationID,
		sessionType,
		clientMsgID,
		msgFirstModifyTime,
		db.extendMsgSetModel.Pb2Model(reactionExtensions),
	)
}