fb-bot

fb-bot

SDK wrapper to verifyRequest, send message, recieve with Facebook Messenger Bots.

Install

$ npm install --save fb-bot

Initializing

This link initializing module parameters.

var express = require('express');
var facebookModule = require('fb-bot.js');
var app = express();
    
facebookModule.init({
  APP_SECRET: 'YOUR_APP_SECRET',
  VALIDATION_TOKEN: 'YOUR_VALIDATION_TOKEN',
  PAGE_ACCESS_TOKEN: 'YOUR_PAGE_ACCESS_TOKEN',
  SERVER_URL: 'YOUR_SERVER_UR'
});

app.use(bodyParser.json({ verify: facebookModule.verifyRequestSignature }));

Usage

 ### 2 important funtions
    facebookModule.sendTextMessage(_senderId, _message).then( ... )
    facebookModule.messageListener(data, callback)

Send an Echo message back to user

//Facebook message 
app.post('/webhook', facebookModule.parsePOST, function (req, res) {
  var dataList = req.afterParse ;
  dataList.forEach(function(data){
    facebookModule.messageListener(data, function(){
      facebookModule.sendTextMessage(data.senderId, data.message.text);
    });
  });
  res.sendStatus(200);
});

Send url of attachments back to user

//Facebook message 
app.post('/webhook', facebookModule.parsePOST, function (req, res) {
  var dataList = req.afterParse ;
  dataList.forEach(function(data){
    facebookModule.messageListener(data, function(){
      facebookModule.sendTextMessage(data.senderId, data.message.attachments[0].payload.url);
    });
  });
  res.sendStatus(200);
});

Two import routes

Important

• GET /webhook
• POST /webhook
• /webhook is default url routes where facebook send verification to

##  Verification

app.get('/webhook', facebookModule.authGET, function (req, res, next) {
    res.status(200).send(req.query['hub.challenge']);
});

## Recieve Message

app.post('/webhook', facebookModule.parsePOST, function (req, res) {
  var dataList = req.afterParse ;
  dataList.forEach(function(data){
      // ....
  });
  res.sendStatus(200);
});

License

MIT