Lark bot Message Card Builder

For Context this library is used for sending message card on larksuite Messenger, this would save your time building json strings just of the layout of your message card

To get Started

You need to install the necessary third-party libaries to make things work

1. Axios
2. Form-Data

Copy this line to your terminal to install these libraries

npm i axios form-data

Features

• Sends Message easily
• Automatic JSON Builder
• No manual uploads of image

Documentation

Import the libaries following its methods and classes

import { ButtonType, Colors, MessageCard } from "./lark_msgcard/src/messageCard";
import { Credentials, MsgType, Token } from "./lark_msgcard/src/token";
const creds = new Credentials();

Initialize your

app_id and app_secret

creds.app_id = '<app_id_here>';
creds.app_secret = '<app_secret_here>';

Optional instance when using image

img_path_file

creds.img_path_file = '<image_file_path>';

Create instance on Token class passing the value of Credentials class

const lark = new Token(creds);

By doing this, you're adding your initializations value to Token class to generate tenant_token

Generate tenant_token

const token = await lark.generateToken();

For generating tenant_token it returns promises and needed to use await so it's necessary to enclose to asynchronous function just like this

(async() => {
  const token = await lark.generateToken();
)()

Message Card

You need to create instance of Message Card class and call every methods you needed

  const msgCard = new MessageCard();

The problemm here that if you call directly the msgCard instance you will get the incorrect value of JSON string which has "data" object that suposedly not to be included when making message card, so to fix this you then to assign the instance to variable and just call the method just like this

  const json = msgCard.generate().message_type().generate().card().config(true, true)

The .config(boolean, boolean) method is sets the default value as true which means it will dynamically adjust its width and height depending on the window size

Header

Adding header is Optional but you can do it like this

  const json = msgCard.generate().message_type()
        .generate().card().config(true, true)
        .generate().card().header("This is Header", Colors.blue) //First Argument is the content of your header and Second Argument represent as color

Elements

The Elements is where the card contents wrap in there are many types of value you can put inside Elements These are the following

• Fields
• Description
• Image
• Button
• Horizontal line etc...

Element values

const json = msgCard.generate().message_type()
       .generate().card().config(true, true)
       .generate().card().header("PIF COLLECTION PIPELINE UPDATE", Colors.blue)
       .generate().card().elements(
           msgCard.image(img_key,"This is Image Description"),
           msgCard.description("Hi <at id=all></at>,\n This is description"),
           msgCard.hr(),
           msgCard.fields(["Value 1", "Value 2", "Value 3", "Value 4"]),
           msgCard.extra(msgCard.description("Extra Description"), msgCard.button("https://www.example.com", "Download", ButtonType.regular)), //Button types Regular, Danger and Primary
           msgCard.hr(),
           msgCard.description("This is Description")
       ).generate().card().build();

Send the Message Card

 lark.sendMsg(json, token,"<your_email_here>")

Note as other markdown like:

• Hyperlink
• Bold
• Italic

You can do the same..

Generating Image Key

   //Initialize image path
   creds.img_path_file = "<image_file_path_here>";

   // Creating intance of Token passing value being declared on creds
   const lark = new Token(creds);
   
   const token = await lark.generateToken(); //Generates token
   const img_key = await lark.uploadImg(token); //Using token to upload image to lark server

Please take note that this is not the official library of larksuite messenger

For full documentation visit Larksuites Official Documentation