About this

Backend for mobile app dev project(wachet)

Run

yarn && yarn serve

---

HTTP Api

Listen port 3000

Login

• Request
  Url: /login
  Method: POST
  Body:

  ### x-www-form-urlencoded formated ###
  {
    "name": string,
    "pwd": string
  }

  where pwd has been hashed
• Response
  HTTP code: 200 OK | 404 Not Found
  Body:

  {
    "id": number,
    "token": string,
    "expireTime": timestamp
  }

  browser will be set cookie here
  note: token used to build websocket connection

Logout

• Request
  Url: /logout
  Method: POST
  Body: no body
• Response
  HTTP code: 204 No Content | 403 Forbidden
  Body: no body

Friends

• Request
  Url: /friends
  Method: GET
  Body: no body
• Response
  HTTP code: 200 OK | 403 Forbidden
  Body:

  [
    {
      "id": number,
      "name": string,
      "avatar": string
    }
  ]

Channels

• Request
  Url: /channels
  Method: GET
  Body: no body
• Response
  HTTP code: 200 OK | 403 Forbidden
  Body:

  [
    {
      "name": string,
      "users": [
        {
          "id": number,
          "name": string,
          "avatar": string
        }
      ]
    }
  ]

---

Websocket API

After login, client creates a websocket connection with server
Listen port 3001

Hello

• Client

  {
    "action": "hello",
    "msg": {
      "token": string
    }
  }

  all actions should be uncapitalized
  note: token gotten from login API
• Server

  {
    "action": "hi",
    "msg": {
      "id": number,
      "name": string,
      "avatar": string
    }
  }

  this response means server authorized user

New chat

• Client

  {
    "action": "new-chat",
    "msg": {
      "to": [
        {
          "id": number
        }
      ]
    }
  }

  id is a user id
• Server
  to Client:

  {
    "action": "new-chat-res",
    "msg": {
      "channel": string
    }
  }

  returns created channel

Receive Message(Client Side) / Pull Message(Server Side)

• Server

  {
    "action": "pull-message",
    "msg": {
      "messages": [
        IMessageType
      ]
    }
  }

  IMessageType is defined as:

  {
    "uuids": [
      {
        "user": number,
        "uuid": number
      }
    ],
    "sender": {
      "id": number,
      "name": string,
      "avatar": string
    },   // user
    "msgId": number,
    "channel": string,
    "content": string,
    "time": timestamp
  }

• Client

  {
    "action": "client-received",
    "msg": {
      "uuids": [number]
    }
  }

  sequence is to distinguish which message client received

Send Message(Client Side) / Push Message(Server Side)

• Client

  {
    "action": "push-message",
    "msg": {
      "sequence": number,
      "channel": string,
      "content": string
    }
  }

• Server

  {
    "action": "server-received",
    "msg": {
      "sequence": number,
      "time": timestamp,
      "msgId": number
    }
  }

  where sequence is to distinguish wich message has been received

Any Error Definations

• forbidden: No access to current channel
• invalid-param: Param invalid
• token-missing: Token given missing or incorrect