chat_design.md

Chat Design

UserService

func AddUser(userId string, name string, passHash string)
func RemoveUser(userId string)
func AddFriendRequest(fromUserId string, toUserId string)
func ApproveFriengRequest(fromUserId string, toUserId string)
func RejectFriendRequest(fromUserId string, toUserId string)

User

type UserStatus int 
const (
    UserStatusOnline  = 0x01
    UserStatusOffLine = 0x02
    UserStatusBusy    = 0x03
)

type User struct {
  Account string
  Passwd  string
  Id      string
  Friends []User
  Status  UserStatus
}

func MessageUser(friendId string, message string)
func MessageGroup(groupId string, message string)
func SendFriendRequest(friendId string)
func ReciveFriendRequest(frientId string)
func ApproveFriendRequest(friendId string)
func RejectFriendRequest(friendId string)

Message

type MessageType int
const (
  TextMessage    MessageType = 0x01
  PictureMessage MessageType = 0x02
  VoiceMessage   MessageType = 0x03
  FileMessage    MessageType = 0x04
)
type Message struct {
  Id          string
  From        string
  To          string
  CreateTime  time.Time
  Type        MessageType
  Content     string
}
func EncodeMessage(msg string) (Message, error)
func DecodeMessage(msg Message) (string, error)

type AddRequestStatus int 

const (
  Add_UNREAD    AddRequestStatus = 0x01
  Add_READ      AddRequestStatus = 0x02
  Add_ACCETPED  AddRequestStatus = 0x03
  Add_REJECTED  AddRequestStatus = 0x04
)

type AddRequest struct {
  From        string
  To          string
  Id          string
  CreateTime  time.Time
  Status      AddRequestStatus
}