botbuilder-line

Bot Framework connector to Line, just better.

Setup

const express = require('express'),
      builder = require('botbuilder'),
      bodyParser = require('body-parser');
var connector = new builder.ChatConnector({
    appId: process.env.appid,
    appPassword: process.env.appkey
}),
    bot = new builder.UniversalBot(connector);
    
const lineConnector = require("botbuilder-line")({
    channelSecret: "channel secret",
    channelAccessToken: "access token",
      debug: false // Switch to true for a bunch of console spam
});
bot.connector("directline", lineConnector); // Use "directline" so we can cheat BotBuilder
 
var server = express();
server.use(bodyParser.json({type: "*/*"})); // Required
server.post('/api/messages', connector.listen());
server.post('/linebot', lineConnector.listen);
 
bot.dialog('/', function (session) {
    if (session.message.source === "line") session.endDialog("This is working.");
});

What works

Receiving events

Just the message event.

Sending messages

• Image, Video, Audio as attachments
• Hero card (List (max 4 buttons) and carousel (max 10 cards x 3 buttons))
• Keyboard buttons

Note

Line API has a lot of super tight limits (Such as: Max 4 buttons on a "Buttons" message, or Max 3 buttons on each card of a "carousel" message, maximum 10 cards per carousel, etc). You will need to change your code (This connector can't convert everything) according to the documentation.