package msg

import (
	"Open_IM/pkg/common/config"
	"Open_IM/pkg/common/constant"
	"Open_IM/pkg/common/db"
	rocksCache "Open_IM/pkg/common/db/rocks_cache"
	"Open_IM/pkg/common/log"
	"Open_IM/pkg/common/tokenverify"
	"Open_IM/pkg/common/tracelog"
	cacheRpc "Open_IM/pkg/proto/cache"
	"Open_IM/pkg/proto/msg"
	sdkws "Open_IM/pkg/proto/sdkws"
	"Open_IM/pkg/utils"
	"context"
	"errors"
	"math/rand"
	"strconv"
	"sync"
	"time"

	go_redis "github.com/go-redis/redis/v8"
)

var (
	ExcludeContentType = []int{constant.HasReadReceipt, constant.GroupHasReadReceipt}
)

type Validator interface {
	validate(pb *msg.SendMsgReq) (bool, int32, string)
}

type MessageRevoked struct {
	RevokerID                   string `json:"revokerID"`
	RevokerRole                 int32  `json:"revokerRole"`
	ClientMsgID                 string `json:"clientMsgID"`
	RevokerNickname             string `json:"revokerNickname"`
	RevokeTime                  int64  `json:"revokeTime"`
	SourceMessageSendTime       int64  `json:"sourceMessageSendTime"`
	SourceMessageSendID         string `json:"sourceMessageSendID"`
	SourceMessageSenderNickname string `json:"sourceMessageSenderNickname"`
	SessionType                 int32  `json:"sessionType"`
	Seq                         uint32 `json:"seq"`
}
type MsgCallBackReq struct {
	SendID       string `json:"sendID"`
	RecvID       string `json:"recvID"`
	Content      string `json:"content"`
	SendTime     int64  `json:"sendTime"`
	MsgFrom      int32  `json:"msgFrom"`
	ContentType  int32  `json:"contentType"`
	SessionType  int32  `json:"sessionType"`
	PlatformID   int32  `json:"senderPlatformID"`
	MsgID        string `json:"msgID"`
	IsOnlineOnly bool   `json:"isOnlineOnly"`
}
type MsgCallBackResp struct {
	ErrCode         int32  `json:"errCode"`
	ErrMsg          string `json:"errMsg"`
	ResponseErrCode int32  `json:"responseErrCode"`
	ResponseResult  struct {
		ModifiedMsg string `json:"modifiedMsg"`
		Ext         string `json:"ext"`
	}
}

func userIsMuteAndIsAdminInGroup(ctx context.Context, groupID, userID string) (isMute bool, isAdmin bool, err error) {
	groupMemberInfo, err := rocksCache.GetGroupMemberInfoFromCache(ctx, groupID, userID)
	if err != nil {
		return false, false, utils.Wrap(err, "")
	}

	if groupMemberInfo.MuteEndTime.Unix() >= time.Now().Unix() {
		return true, groupMemberInfo.RoleLevel > constant.GroupOrdinaryUsers, nil
	}
	return false, groupMemberInfo.RoleLevel > constant.GroupOrdinaryUsers, nil
}

func groupIsMuted(ctx context.Context, groupID string) (bool, error) {
	groupInfo, err := rocksCache.GetGroupInfoFromCache(ctx, groupID)
	if err != nil {
		return false, utils.Wrap(err, "GetGroupInfoFromCache failed")
	}
	if groupInfo.Status == constant.GroupStatusMuted {
		return true, nil
	}
	return false, nil
}

func (rpc *msgServer) messageVerification(ctx context.Context, data *msg.SendMsgReq) ([]string, error) {
	switch data.MsgData.SessionType {
	case constant.SingleChatType:
		if utils.IsContain(data.MsgData.SendID, config.Config.Manager.AppManagerUid) {
			return true, 0, "", nil
		}
		if data.MsgData.ContentType <= constant.NotificationEnd && data.MsgData.ContentType >= constant.NotificationBegin {
			return true, 0, "", nil
		}
		log.NewDebug(data.OperationID, *config.Config.MessageVerify.FriendVerify)
		reqGetBlackIDListFromCache := &cacheRpc.GetBlackIDListFromCacheReq{UserID: data.MsgData.RecvID, OperationID: data.OperationID}
		etcdConn, err := rpc.GetConn(context.Background(), config.Config.RpcRegisterName.OpenImCacheName)
		if err != nil {
			errMsg := data.OperationID + "getcdv3.GetDefaultConn == nil"
			log.NewError(data.OperationID, errMsg)
			return true, 0, "", nil
		}

		cacheClient := cacheRpc.NewCacheClient(etcdConn)
		cacheResp, err := cacheClient.GetBlackIDListFromCache(context.Background(), reqGetBlackIDListFromCache)
		if err != nil {
			log.NewError(data.OperationID, "GetBlackIDListFromCache rpc call failed ", err.Error())
		} else {
			if cacheResp.CommonResp.ErrCode != 0 {
				log.NewError(data.OperationID, "GetBlackIDListFromCache rpc logic call failed ", cacheResp.String())
			} else {
				if utils.IsContain(data.MsgData.SendID, cacheResp.UserIDList) {
					return false, 600, "in black list", nil
				}
			}
		}
		log.NewDebug(data.OperationID, *config.Config.MessageVerify.FriendVerify)
		if *config.Config.MessageVerify.FriendVerify {
			reqGetFriendIDListFromCache := &cacheRpc.GetFriendIDListFromCacheReq{UserID: data.MsgData.RecvID, OperationID: data.OperationID}
			etcdConn, err := rpc.GetConn(context.Background(), config.Config.RpcRegisterName.OpenImCacheName)
			if err != nil {
				errMsg := data.OperationID + "getcdv3.GetDefaultConn == nil"
				log.NewError(data.OperationID, errMsg)
				return true, 0, "", nil
			}
			cacheClient := cacheRpc.NewCacheClient(etcdConn)
			cacheResp, err := cacheClient.GetFriendIDListFromCache(context.Background(), reqGetFriendIDListFromCache)
			if err != nil {
				log.NewError(data.OperationID, "GetFriendIDListFromCache rpc call failed ", err.Error())
			} else {
				if cacheResp.CommonResp.ErrCode != 0 {
					log.NewError(data.OperationID, "GetFriendIDListFromCache rpc logic call failed ", cacheResp.String())
				} else {
					if !utils.IsContain(data.MsgData.SendID, cacheResp.UserIDList) {
						return false, 601, "not friend", nil
					}
				}
			}
			return true, 0, "", nil
		} else {
			return true, 0, "", nil
		}
	case constant.GroupChatType:
		userIDList, err := utils.GetGroupMemberUserIDList(ctx, data.MsgData.GroupID, data.OperationID)
		if err != nil {
			errMsg := data.OperationID + err.Error()
			log.NewError(data.OperationID, errMsg)
			return false, 201, errMsg, nil
		}
		if tokenverify.IsManagerUserID(data.MsgData.SendID) {
			return true, 0, "", userIDList
		}
		if data.MsgData.ContentType <= constant.NotificationEnd && data.MsgData.ContentType >= constant.NotificationBegin {
			return true, 0, "", userIDList
		} else {
			if !utils.IsContain(data.MsgData.SendID, userIDList) {
				//return returnMsg(&replay, pb, 202, "you are not in group", "", 0)
				return false, 202, "you are not in group", nil
			}
		}
		isMute, isAdmin, err := userIsMuteAndIsAdminInGroup(ctx, data.MsgData.GroupID, data.MsgData.SendID)
		if err != nil {
			errMsg := data.OperationID + err.Error()
			return false, 223, errMsg, nil
		}
		if isMute {
			return false, 224, "you are muted", nil
		}
		if isAdmin {
			return true, 0, "", userIDList
		}
		isMute, err = groupIsMuted(ctx, data.MsgData.GroupID)
		if err != nil {
			errMsg := data.OperationID + err.Error()
			return false, 223, errMsg, nil
		}
		if isMute {
			return false, 225, "group id muted", nil
		}
		return true, 0, "", userIDList
	case constant.SuperGroupChatType:
		groupInfo, err := rocksCache.GetGroupInfoFromCache(ctx, data.MsgData.GroupID)
		if err != nil {
			return false, 201, err.Error(), nil
		}

		if data.MsgData.ContentType == constant.AdvancedRevoke {
			revokeMessage := new(MessageRevoked)
			err := utils.JsonStringToStruct(string(data.MsgData.Content), revokeMessage)
			if err != nil {
				log.Error(data.OperationID, "json unmarshal err:", err.Error())
				return false, 201, err.Error(), nil
			}
			log.Debug(data.OperationID, "revoke message is", *revokeMessage)
			if revokeMessage.RevokerID != revokeMessage.SourceMessageSendID {
				req := pbChat.GetSuperGroupMsgReq{OperationID: data.OperationID, Seq: revokeMessage.Seq, GroupID: data.MsgData.GroupID}
				resp, err := rpc.GetSuperGroupMsg(context.Background(), &req)
				if err != nil {
					log.Error(data.OperationID, "GetSuperGroupMsgReq err:", err.Error())
				} else if resp.ErrCode != 0 {
					log.Error(data.OperationID, "GetSuperGroupMsgReq err:", resp.ErrCode, resp.ErrMsg)
				} else {
					if resp.MsgData != nil && resp.MsgData.ClientMsgID == revokeMessage.ClientMsgID && resp.MsgData.Seq == revokeMessage.Seq {
						revokeMessage.SourceMessageSendTime = resp.MsgData.SendTime
						revokeMessage.SourceMessageSenderNickname = resp.MsgData.SenderNickname
						revokeMessage.SourceMessageSendID = resp.MsgData.SendID
						log.Debug(data.OperationID, "new revoke message is ", revokeMessage)
						data.MsgData.Content = []byte(utils.StructToJsonString(revokeMessage))
					} else {
						return false, 201, errors.New("msg err").Error(), nil
					}
				}
			}
		}
		if groupInfo.GroupType == constant.SuperGroup {
			return true, 0, "", nil
		} else {
			userIDList, err := utils.GetGroupMemberUserIDList(ctx, data.MsgData.GroupID, data.OperationID)
			if err != nil {
				errMsg := data.OperationID + err.Error()
				log.NewError(data.OperationID, errMsg)
				return false, 201, errMsg, nil
			}
			if tokenverify.IsManagerUserID(data.MsgData.SendID) {
				return true, 0, "", userIDList
			}
			if data.MsgData.ContentType <= constant.NotificationEnd && data.MsgData.ContentType >= constant.NotificationBegin {
				return true, 0, "", userIDList
			} else {
				if !utils.IsContain(data.MsgData.SendID, userIDList) {
					//return returnMsg(&replay, pb, 202, "you are not in group", "", 0)
					return false, 202, "you are not in group", nil
				}
			}
			isMute, isAdmin, err := userIsMuteAndIsAdminInGroup(ctx, data.MsgData.GroupID, data.MsgData.SendID)
			if err != nil {
				errMsg := data.OperationID + err.Error()
				return false, 223, errMsg, nil
			}
			if isMute {
				return false, 224, "you are muted", nil
			}
			if isAdmin {
				return true, 0, "", userIDList
			}
			isMute, err = groupIsMuted(ctx, data.MsgData.GroupID)
			if err != nil {
				errMsg := data.OperationID + err.Error()
				return false, 223, errMsg, nil
			}
			if isMute {
				return false, 225, "group id muted", nil
			}
			return true, 0, "", userIDList
		}
	default:
		return true, 0, "", nil
	}

}
func (rpc *msgServer) encapsulateMsgData(msg *sdkws.MsgData) {
	msg.ServerMsgID = GetMsgID(msg.SendID)
	msg.SendTime = utils.GetCurrentTimestampByMill()
	switch msg.ContentType {
	case constant.Text:
		fallthrough
	case constant.Picture:
		fallthrough
	case constant.Voice:
		fallthrough
	case constant.Video:
		fallthrough
	case constant.File:
		fallthrough
	case constant.AtText:
		fallthrough
	case constant.Merger:
		fallthrough
	case constant.Card:
		fallthrough
	case constant.Location:
		fallthrough
	case constant.Custom:
		fallthrough
	case constant.Quote:
		utils.SetSwitchFromOptions(msg.Options, constant.IsConversationUpdate, true)
		utils.SetSwitchFromOptions(msg.Options, constant.IsUnreadCount, true)
		utils.SetSwitchFromOptions(msg.Options, constant.IsSenderSync, true)
	case constant.Revoke:
		utils.SetSwitchFromOptions(msg.Options, constant.IsUnreadCount, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsOfflinePush, false)
	case constant.HasReadReceipt:
		utils.SetSwitchFromOptions(msg.Options, constant.IsConversationUpdate, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsSenderConversationUpdate, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsUnreadCount, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsOfflinePush, false)
	case constant.Typing:
		utils.SetSwitchFromOptions(msg.Options, constant.IsHistory, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsPersistent, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsSenderSync, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsConversationUpdate, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsSenderConversationUpdate, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsUnreadCount, false)
		utils.SetSwitchFromOptions(msg.Options, constant.IsOfflinePush, false)
	}
}

func GetMsgID(sendID string) string {
	t := time.Now().Format("2006-01-02 15:04:05")
	return utils.Md5(t + "-" + sendID + "-" + strconv.Itoa(rand.Int()))
}

func modifyMessageByUserMessageReceiveOpt(userID, sourceID string, sessionType int, pb *msg.SendMsgReq) (bool, error) {
	opt, err := db.DB.GetUserGlobalMsgRecvOpt(userID)
	if err != nil {
		return false, err
	}
	switch opt {
	case constant.ReceiveMessage:
	case constant.NotReceiveMessage:
		return false
	case constant.ReceiveNotNotifyMessage:
		if pb.MsgData.Options == nil {
			pb.MsgData.Options = make(map[string]bool, 10)
		}
		utils.SetSwitchFromOptions(pb.MsgData.Options, constant.IsOfflinePush, false)
		return true
	}
	conversationID := utils.GetConversationIDBySessionType(sourceID, sessionType)
	singleOpt, sErr := db.DB.GetSingleConversationRecvMsgOpt(userID, conversationID)
	if sErr != nil && sErr != go_redis.Nil {
		log.NewError(pb.OperationID, "GetSingleConversationMsgOpt from redis err", conversationID, pb.String(), sErr.Error())
		return true
	}
	switch singleOpt {
	case constant.ReceiveMessage:
		return true
	case constant.NotReceiveMessage:
		if utils.IsContainInt(int(pb.MsgData.ContentType), ExcludeContentType) {
			return true
		}
		return false
	case constant.ReceiveNotNotifyMessage:
		if pb.MsgData.Options == nil {
			pb.MsgData.Options = make(map[string]bool, 10)
		}
		utils.SetSwitchFromOptions(pb.MsgData.Options, constant.IsOfflinePush, false)
		return true
	}

	return true
}

func valueCopy(pb *msg.SendMsgReq) *msg.SendMsgReq {
	offlinePushInfo := sdkws.OfflinePushInfo{}
	if pb.MsgData.OfflinePushInfo != nil {
		offlinePushInfo = *pb.MsgData.OfflinePushInfo
	}
	msgData := sdkws.MsgData{}
	msgData = *pb.MsgData
	msgData.OfflinePushInfo = &offlinePushInfo

	options := make(map[string]bool, 10)
	for key, value := range pb.MsgData.Options {
		options[key] = value
	}
	msgData.Options = options
	return &msg.SendMsgReq{MsgData: &msgData}
}

func (m *msgServer) sendMsgToGroupOptimization(ctx context.Context, list []string, groupPB *msg.SendMsgReq, wg *sync.WaitGroup) error {
	msgToMQGroup := msg.MsgDataToMQ{OperationID: tracelog.GetOperationID(ctx), MsgData: groupPB.MsgData}
	tempOptions := make(map[string]bool, 1)
	for k, v := range groupPB.MsgData.Options {
		tempOptions[k] = v
	}
	for _, v := range list {
		groupPB.MsgData.RecvID = v
		options := make(map[string]bool, 1)
		for k, v := range tempOptions {
			options[k] = v
		}
		groupPB.MsgData.Options = options
		isSend, err := modifyMessageByUserMessageReceiveOpt(v, groupPB.MsgData.GroupID, constant.GroupChatType, groupPB)
		if err != nil {
			wg.Done()
			return err
		}
		if isSend {
			if v == "" || groupPB.MsgData.SendID == "" {
				return constant.ErrArgs.Wrap("userID or groupPB.MsgData.SendID is empty")
			}
			err := m.MsgInterface.MsgToMQ(ctx, v, &msgToMQGroup)
			if err != nil {
				wg.Done()
				return err
			}
		}
	}
	wg.Done()
	return nil
}