Line Bot Simple Server

line-bot-simple-server is a Node.js package that allows you to easily and quickly create a bot server for Line. It utilizes the Line Messaging API to send messages from this server to the Line app. Using this package allows you to quickly and easily create a bot server, even if you are not familiar with Node.js and the details of the Messaging API.

Prerequisites

• Node.js and npm installed
• Line Business Account
• Channel Access Token and Channel Secret from your Line Business Account. To obtain them, please refer to the instructions

Installation

npm install line-bot-simple-server --save

Usage

Firstly, import the package and initialize it with your Channel Access Token and Channel Secret. Create a message to initialize the messageProvider using the setMessage method, and then start the bot server! The server will be available at the endpoint http://localhost:8081/webhook

import { LineBotSimpleServer, MessageProvide, LineBotSimpleServerConfig } from 'line-bot-simple-server'

const lineBotSimpleServerConfig: LineBotSimpleServerConfig = {
  channelAccessToken: YOUR_CHANNEL_ACCESS_TOKEN,
  channelSecret: YOUR_CHANNEL_SECRET
}
const message: Flex | Carousel = {...***}
const PORT = 8081

const messageProvider = new MessageProvider(message)
messageProvider.setMessage(message)
const lineBotSimpleServer = new LineBotSimpleServer(lineBotSimpleServerConfig, messageProvider)
lineBotSimpleServer.startServer(PORT)

Create message

The code bellow provides an exmaple of how to create a Flex Message using the package. It utilizes CSS Flexbox and provides support for various type such as Flex, Bubble, Carousel, Text, Box, Button, Image, Video, Icon, Span, Separator and Filler.

const text: Text = {
  type: 'text',
  text: 'hoge'
}
const box: Box = {
  type: 'box',
  layout: 'horizontal',
  contents: [text]
}

const bubble: Bubble = {
  type: 'bubble',
  body: box
}

const message: Flex = {
  type: 'flex',
  altText: 'This is a flex message',
  contents: bubble
}

Demo

To create a temporary demo of your Node.js server on localhost, you can use localtunnel. Run the following commands.

npm install localtunnel -D
npx lt --port 8081 --subdomain enterYourPreferredSubdomain