package cache

import (
	"Open_IM/pkg/common/config"
	"Open_IM/pkg/common/constant"
	pbChat "Open_IM/pkg/proto/msg"
	pbRtc "Open_IM/pkg/proto/rtc"
	"Open_IM/pkg/proto/sdkws"
	"Open_IM/pkg/utils"
	"context"
	"errors"
	"fmt"
	"strconv"
	"time"

	"github.com/go-redis/redis/v8"
	"github.com/golang/protobuf/jsonpb"
	"github.com/golang/protobuf/proto"
)

func NewRedis() (*RedisClient, error) {
	var rdb redis.UniversalClient
	if config.Config.Redis.EnableCluster {
		rdb = redis.NewClusterClient(&redis.ClusterOptions{
			Addrs:    config.Config.Redis.DBAddress,
			Username: config.Config.Redis.DBUserName,
			Password: config.Config.Redis.DBPassWord, // no password set
			PoolSize: 50,
		})
		//if err := rdb.Ping(ctx).Err();err != nil {
		//	return nil, fmt.Errorf("redis ping %w", err)
		//}
		//return &RedisClient{rdb: rdb}, nil
	} else {
		rdb = redis.NewClient(&redis.Options{
			Addr:     config.Config.Redis.DBAddress[0],
			Username: config.Config.Redis.DBUserName,
			Password: config.Config.Redis.DBPassWord, // no password set
			DB:       0,                              // use default DB
			PoolSize: 100,                            // 连接池大小
		})
		//err := rdb.Ping(ctx).Err()
		//if err != nil {
		//	panic(err.Error() + " redis " + config.Config.Redis.DBAddress[0] + config.Config.Redis.DBUserName + config.Config.Redis.DBPassWord)
		//}
	}
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
	defer cancel()
	err := rdb.Ping(ctx).Err()
	if err != nil {
		return nil, fmt.Errorf("redis ping %w", err)
	}
	return &RedisClient{rdb: rdb}, nil
}

type RedisClient struct {
	rdb redis.UniversalClient
}

func NewRedisClient(rdb redis.UniversalClient) *RedisClient {
	return &RedisClient{rdb: rdb}
}

func (r *RedisClient) GetClient() redis.UniversalClient {
	return r.rdb
}

// Perform seq auto-increment operation of user messages
func (r *RedisClient) IncrUserSeq(ctx context.Context, uid string) (int64, error) {
	key := userIncrSeq + uid
	seq, err := r.rdb.Incr(context.Background(), key).Result()
	return seq, err
}

// Get the largest Seq
func (r *RedisClient) GetUserMaxSeq(ctx context.Context, uid string) (int64, error) {
	key := userIncrSeq + uid
	seq, err := r.rdb.Get(context.Background(), key).Result()
	return int64(utils.StringToInt(seq)), err
}

// set the largest Seq
func (r *RedisClient) SetUserMaxSeq(ctx context.Context, uid string, maxSeq int64) error {
	key := userIncrSeq + uid
	return r.rdb.Set(context.Background(), key, maxSeq, 0).Err()
}

// Set the user's minimum seq
func (r *RedisClient) SetUserMinSeq(ctx context.Context, uid string, minSeq int64) (err error) {
	key := userMinSeq + uid
	return r.rdb.Set(context.Background(), key, minSeq, 0).Err()
}

// Get the smallest Seq
func (r *RedisClient) GetUserMinSeq(ctx context.Context, uid string) (int64, error) {
	key := userMinSeq + uid
	seq, err := r.rdb.Get(context.Background(), key).Result()
	return int64(utils.StringToInt(seq)), err
}

func (r *RedisClient) SetGroupUserMinSeq(ctx context.Context, groupID, userID string, minSeq int64) (err error) {
	key := groupUserMinSeq + "g:" + groupID + "u:" + userID
	return r.rdb.Set(context.Background(), key, minSeq, 0).Err()
}
func (r *RedisClient) GetGroupUserMinSeq(ctx context.Context, groupID, userID string) (int64, error) {
	key := groupUserMinSeq + "g:" + groupID + "u:" + userID
	seq, err := r.rdb.Get(context.Background(), key).Result()
	return int64(utils.StringToInt(seq)), err
}

func (r *RedisClient) GetGroupMaxSeq(ctx context.Context, groupID string) (int64, error) {
	key := groupMaxSeq + groupID
	seq, err := r.rdb.Get(context.Background(), key).Result()
	return int64(utils.StringToInt(seq)), err
}

func (r *RedisClient) IncrGroupMaxSeq(ctx context.Context, groupID string) (int64, error) {
	key := groupMaxSeq + groupID
	seq, err := r.rdb.Incr(context.Background(), key).Result()
	return seq, err
}

func (r *RedisClient) SetGroupMaxSeq(ctx context.Context, groupID string, maxSeq int64) error {
	key := groupMaxSeq + groupID
	return r.rdb.Set(context.Background(), key, maxSeq, 0).Err()
}

func (r *RedisClient) SetGroupMinSeq(ctx context.Context, groupID string, minSeq int64) error {
	key := groupMinSeq + groupID
	return r.rdb.Set(context.Background(), key, minSeq, 0).Err()
}

// Store userid and platform class to redis
func (r *RedisClient) AddTokenFlag(ctx context.Context, userID string, platform string, token string, flag int) error {
	key := uidPidToken + userID + ":" + platform
	return r.rdb.HSet(context.Background(), key, token, flag).Err()
}

//key:userID+platform-> <token, flag>
func (r *RedisClient) GetTokenMapByUidPid(ctx context.Context, userID, platformID string) (map[string]int, error) {
	key := uidPidToken + userID + ":" + platformID
	m, err := r.rdb.HGetAll(context.Background(), key).Result()
	mm := make(map[string]int)
	for k, v := range m {
		mm[k] = utils.StringToInt(v)
	}
	return mm, err
}

func (r *RedisClient) GetTokensWithoutError(ctx context.Context, userID, platform string) (map[string]int, error) {
	key := uidPidToken + userID + ":" + platform
	m, err := r.rdb.HGetAll(context.Background(), key).Result()
	if err != nil && err == redis.Nil {
		return nil, nil
	}
	mm := make(map[string]int)
	for k, v := range m {
		mm[k] = utils.StringToInt(v)
	}
	return mm, utils.Wrap(err, "")
}

func (r *RedisClient) SetTokenMapByUidPid(ctx context.Context, userID string, platform string, m map[string]int) error {
	key := uidPidToken + userID + ":" + platform
	mm := make(map[string]interface{})
	for k, v := range m {
		mm[k] = v
	}
	return r.rdb.HSet(context.Background(), key, mm).Err()
}

func (r *RedisClient) DeleteTokenByUidPid(ctx context.Context, userID string, platform string, fields []string) error {
	key := uidPidToken + userID + ":" + platform
	return r.rdb.HDel(context.Background(), key, fields...).Err()
}

func (r *RedisClient) GetMessageListBySeq(ctx context.Context, userID string, seqList []int64, operationID string) (seqMsg []*sdkws.MsgData, failedSeqList []int64, err2 error) {
	for _, v := range seqList {
		//MESSAGE_CACHE:169.254.225.224_reliability1653387820_0_1
		key := messageCache + userID + "_" + strconv.Itoa(int(v))
		result, err := r.rdb.Get(context.Background(), key).Result()
		if err != nil {
			if err != redis.Nil {
				err2 = err
			}
			failedSeqList = append(failedSeqList, v)
		} else {
			msg := sdkws.MsgData{}
			err = jsonpb.UnmarshalString(result, &msg)
			if err != nil {
				err2 = err
				failedSeqList = append(failedSeqList, v)
			} else {
				seqMsg = append(seqMsg, &msg)
			}
		}
	}
	return seqMsg, failedSeqList, err2
}

func (r *RedisClient) SetMessageToCache(ctx context.Context, userID string, msgList []*pbChat.MsgDataToMQ, uid string) (int, error) {
	pipe := r.rdb.Pipeline()
	var failedList []pbChat.MsgDataToMQ
	for _, msg := range msgList {
		key := messageCache + uid + "_" + strconv.Itoa(int(msg.MsgData.Seq))
		s, err := utils.Pb2String(msg.MsgData)
		if err != nil {
			continue
		}
		err = pipe.Set(ctx, key, s, time.Duration(config.Config.MsgCacheTimeout)*time.Second).Err()
		//err = r.rdb.HMSet(context.Background(), "12", map[string]interface{}{"1": 2, "343": false}).Err()
		if err != nil {
			failedList = append(failedList, *msg)
		}
	}
	if len(failedList) != 0 {
		return len(failedList), errors.New(fmt.Sprintf("set msg to cache failed, failed lists: %q,%s", failedList))
	}
	_, err := pipe.Exec(ctx)
	return 0, err
}
func (r *RedisClient) DeleteMessageFromCache(ctx context.Context, userID string, msgList []*pbChat.MsgDataToMQ) error {
	for _, msg := range msgList {
		key := messageCache + userID + "_" + strconv.Itoa(int(msg.MsgData.Seq))
		err := r.rdb.Del(ctx, key).Err()
		if err != nil {
		}
	}
	return nil
}

func (r *RedisClient) CleanUpOneUserAllMsg(ctx context.Context, userID string) error {
	key := messageCache + userID + "_" + "*"
	vals, err := r.rdb.Keys(ctx, key).Result()
	if err == redis.Nil {
		return nil
	}
	if err != nil {
		return utils.Wrap(err, "")
	}
	for _, v := range vals {
		err = r.rdb.Del(ctx, v).Err()
	}
	return nil
}

func (r *RedisClient) HandleSignalInfo(ctx context.Context, operationID string, msg *sdkws.MsgData, pushToUserID string) (isSend bool, err error) {
	req := &pbRtc.SignalReq{}
	if err := proto.Unmarshal(msg.Content, req); err != nil {
		return false, err
	}
	var inviteeUserIDs []string
	var isInviteSignal bool
	switch signalInfo := req.Payload.(type) {
	case *pbRtc.SignalReq_Invite:
		inviteeUserIDs = signalInfo.Invite.Invitation.InviteeUserIDList
		isInviteSignal = true
	case *pbRtc.SignalReq_InviteInGroup:
		inviteeUserIDs = signalInfo.InviteInGroup.Invitation.InviteeUserIDList
		isInviteSignal = true
		if !utils.IsContain(pushToUserID, inviteeUserIDs) {
			return false, nil
		}
	case *pbRtc.SignalReq_HungUp, *pbRtc.SignalReq_Cancel, *pbRtc.SignalReq_Reject, *pbRtc.SignalReq_Accept:
		return false, nil
	default:
		return false, nil
	}
	if isInviteSignal {
		for _, userID := range inviteeUserIDs {
			timeout, err := strconv.Atoi(config.Config.Rtc.SignalTimeout)
			if err != nil {
				return false, err
			}
			keyList := signalListCache + userID
			err = r.rdb.LPush(context.Background(), keyList, msg.ClientMsgID).Err()
			if err != nil {
				return false, err
			}
			err = r.rdb.Expire(context.Background(), keyList, time.Duration(timeout)*time.Second).Err()
			if err != nil {
				return false, err
			}
			key := signalCache + msg.ClientMsgID
			err = r.rdb.Set(context.Background(), key, msg.Content, time.Duration(timeout)*time.Second).Err()
			if err != nil {
				return false, err
			}
		}
	}
	return true, nil
}

func (r *RedisClient) GetSignalInfoFromCacheByClientMsgID(ctx context.Context, clientMsgID string) (invitationInfo *pbRtc.SignalInviteReq, err error) {
	key := signalCache + clientMsgID
	invitationInfo = &pbRtc.SignalInviteReq{}
	bytes, err := r.rdb.Get(context.Background(), key).Bytes()
	if err != nil {
		return nil, err
	}
	req := &pbRtc.SignalReq{}
	if err = proto.Unmarshal(bytes, req); err != nil {
		return nil, err
	}
	switch req2 := req.Payload.(type) {
	case *pbRtc.SignalReq_Invite:
		invitationInfo.Invitation = req2.Invite.Invitation
		invitationInfo.OpUserID = req2.Invite.OpUserID
	case *pbRtc.SignalReq_InviteInGroup:
		invitationInfo.Invitation = req2.InviteInGroup.Invitation
		invitationInfo.OpUserID = req2.InviteInGroup.OpUserID
	}
	return invitationInfo, err
}

func (r *RedisClient) GetAvailableSignalInvitationInfo(ctx context.Context, userID string) (invitationInfo *pbRtc.SignalInviteReq, err error) {
	keyList := signalListCache + userID
	result := r.rdb.LPop(context.Background(), keyList)
	if err = result.Err(); err != nil {
		return nil, utils.Wrap(err, "GetAvailableSignalInvitationInfo failed")
	}
	key, err := result.Result()
	if err != nil {
		return nil, utils.Wrap(err, "GetAvailableSignalInvitationInfo failed")
	}
	invitationInfo, err = r.GetSignalInfoFromCacheByClientMsgID(ctx, key)
	if err != nil {
		return nil, utils.Wrap(err, "GetSignalInfoFromCacheByClientMsgID")
	}
	err = r.DelUserSignalList(ctx, userID)
	if err != nil {
		return nil, utils.Wrap(err, "GetSignalInfoFromCacheByClientMsgID")
	}
	return invitationInfo, nil
}

func (r *RedisClient) DelUserSignalList(ctx context.Context, userID string) error {
	keyList := signalListCache + userID
	err := r.rdb.Del(context.Background(), keyList).Err()
	return err
}

func (r *RedisClient) DelMsgFromCache(ctx context.Context, uid string, seqList []int64, operationID string) {
	for _, seq := range seqList {
		key := messageCache + uid + "_" + strconv.Itoa(int(seq))
		result, err := r.rdb.Get(context.Background(), key).Result()
		if err != nil {
			if err == redis.Nil {
			} else {
			}
			continue
		}
		var msg sdkws.MsgData
		if err := utils.String2Pb(result, &msg); err != nil {
			continue
		}
		msg.Status = constant.MsgDeleted
		s, err := utils.Pb2String(&msg)
		if err != nil {
			continue
		}
		if err := r.rdb.Set(context.Background(), key, s, time.Duration(config.Config.MsgCacheTimeout)*time.Second).Err(); err != nil {
		}
	}
}

func (r *RedisClient) SetGetuiToken(ctx context.Context, token string, expireTime int64) error {
	return r.rdb.Set(context.Background(), getuiToken, token, time.Duration(expireTime)*time.Second).Err()
}

func (r *RedisClient) GetGetuiToken(ctx context.Context) (string, error) {
	result, err := r.rdb.Get(context.Background(), getuiToken).Result()
	return result, err
}

func (r *RedisClient) SetGetuiTaskID(ctx context.Context, taskID string, expireTime int64) error {
	return r.rdb.Set(context.Background(), getuiTaskID, taskID, time.Duration(expireTime)*time.Second).Err()
}

func (r *RedisClient) GetGetuiTaskID(ctx context.Context) (string, error) {
	result, err := r.rdb.Get(context.Background(), getuiTaskID).Result()
	return result, err
}

func (r *RedisClient) SetSendMsgStatus(ctx context.Context, status int32, operationID string) error {
	return r.rdb.Set(context.Background(), sendMsgFailedFlag+operationID, status, time.Hour*24).Err()
}

func (r *RedisClient) GetSendMsgStatus(ctx context.Context, operationID string) (int, error) {
	result, err := r.rdb.Get(context.Background(), sendMsgFailedFlag+operationID).Result()
	if err != nil {
		return 0, err
	}
	status, err := strconv.Atoi(result)
	return status, err
}

func (r *RedisClient) SetFcmToken(ctx context.Context, account string, platformID int, fcmToken string, expireTime int64) (err error) {
	key := FcmToken + account + ":" + strconv.Itoa(platformID)
	return r.rdb.Set(context.Background(), key, fcmToken, time.Duration(expireTime)*time.Second).Err()
}

func (r *RedisClient) GetFcmToken(ctx context.Context, account string, platformID int) (string, error) {
	key := FcmToken + account + ":" + strconv.Itoa(platformID)
	return r.rdb.Get(context.Background(), key).Result()
}
func (r *RedisClient) DelFcmToken(ctx context.Context, account string, platformID int) error {
	key := FcmToken + account + ":" + strconv.Itoa(platformID)
	return r.rdb.Del(context.Background(), key).Err()
}
func (r *RedisClient) IncrUserBadgeUnreadCountSum(ctx context.Context, uid string) (int, error) {
	key := userBadgeUnreadCountSum + uid
	seq, err := r.rdb.Incr(context.Background(), key).Result()
	return int(seq), err
}
func (r *RedisClient) SetUserBadgeUnreadCountSum(ctx context.Context, uid string, value int) error {
	key := userBadgeUnreadCountSum + uid
	return r.rdb.Set(context.Background(), key, value, 0).Err()
}
func (r *RedisClient) GetUserBadgeUnreadCountSum(ctx context.Context, uid string) (int, error) {
	key := userBadgeUnreadCountSum + uid
	seq, err := r.rdb.Get(context.Background(), key).Result()
	return utils.StringToInt(seq), err
}
func (r *RedisClient) JudgeMessageReactionEXISTS(ctx context.Context, clientMsgID string, sessionType int32) (bool, error) {
	key := r.getMessageReactionExPrefix(clientMsgID, sessionType)
	n, err := r.rdb.Exists(context.Background(), key).Result()
	return n > 0, err
}

func (r *RedisClient) GetOneMessageAllReactionList(ctx context.Context, clientMsgID string, sessionType int32) (map[string]string, error) {
	key := r.getMessageReactionExPrefix(clientMsgID, sessionType)
	return r.rdb.HGetAll(context.Background(), key).Result()

}
func (r *RedisClient) DeleteOneMessageKey(ctx context.Context, clientMsgID string, sessionType int32, subKey string) error {
	key := r.getMessageReactionExPrefix(clientMsgID, sessionType)
	return r.rdb.HDel(context.Background(), key, subKey).Err()

}
func (r *RedisClient) SetMessageReactionExpire(ctx context.Context, clientMsgID string, sessionType int32, expiration time.Duration) (bool, error) {
	key := r.getMessageReactionExPrefix(clientMsgID, sessionType)
	return r.rdb.Expire(context.Background(), key, expiration).Result()
}

func (r *RedisClient) GetMessageTypeKeyValue(ctx context.Context, clientMsgID string, sessionType int32, typeKey string) (string, error) {
	key := r.getMessageReactionExPrefix(clientMsgID, sessionType)
	result, err := r.rdb.HGet(context.Background(), key, typeKey).Result()
	return result, err
}

func (r *RedisClient) SetMessageTypeKeyValue(ctx context.Context, clientMsgID string, sessionType int32, typeKey, value string) error {
	key := r.getMessageReactionExPrefix(clientMsgID, sessionType)
	return r.rdb.HSet(context.Background(), key, typeKey, value).Err()

}

func (r *RedisClient) LockMessageTypeKey(ctx context.Context, clientMsgID string, TypeKey string) error {
	key := exTypeKeyLocker + clientMsgID + "_" + TypeKey
	return r.rdb.SetNX(context.Background(), key, 1, time.Minute).Err()
}
func (r *RedisClient) UnLockMessageTypeKey(ctx context.Context, clientMsgID string, TypeKey string) error {
	key := exTypeKeyLocker + clientMsgID + "_" + TypeKey
	return r.rdb.Del(context.Background(), key).Err()

}

func (r *RedisClient) getMessageReactionExPrefix(clientMsgID string, sessionType int32) string {
	switch sessionType {
	case constant.SingleChatType:
		return "EX_SINGLE_" + clientMsgID
	case constant.GroupChatType:
		return "EX_GROUP_" + clientMsgID
	case constant.SuperGroupChatType:
		return "EX_SUPER_GROUP_" + clientMsgID
	case constant.NotificationChatType:
		return "EX_NOTIFICATION" + clientMsgID
	}
	return ""
}