Refactor code

internal/rpc/group/group.go

@@ -78,9 +78,10 @@ func (s *groupServer) CreateGroup(ctx context.Context, req *pbGroup.CreateGroupR
 	//Time stamp + MD5 to generate group chat id
 	groupId := utils.Md5(strconv.FormatInt(time.Now().UnixNano(), 10))
 	//to group
-	groupInfo := db.Group{GroupID: groupId}
+	groupInfo := db.Group{}
 	utils.CopyStructFields(&groupInfo, req.GroupInfo)
 	groupInfo.CreatorUserID = req.OpUserID
+	groupInfo.GroupID = groupId
 	err := imdb.InsertIntoGroup(groupInfo)
 	if err != nil {
 		log.NewError(req.OperationID, "InsertIntoGroup failed, ", err.Error(), groupInfo)