fb-chatbot

NPM module that helps you build a chatbot.

Getting Started

1. Follow step 1 from the Messenger Quickstart.
2. Create a black NodeJS app. Add the following code. (Make sure you enter a sane verify_token)

var fbChatBot = require('fb-chatbot');

var bot = new fbChatBot('/webhook/', 3000, '<random verify_token>', '', true);

bot.subscribe(function(error, response, body) {
	console.log(error);
	console.log(body);
});

bot.on('message', function(message) {
	console.log(message);
});

3. Deploy on a HTTPS server. ngrok works great for testing, but you can deploy it pretty much anywhere.
4. Setup your webhook in your fb developer console on the "Messenger" tab. While setting up, enter the correct url and the verify_token from your code. When you click on "Verify and Save", it should give a success indicator. If not, check that your server is running, and is deployed via HTTPS, and the URL and verify_token are correct.
5. Generate a page access token from your developer console on the "Messenger" tab. Copy this token. Modify your code to add in this token:

var fbChatBot = require('fb-chatbot');

var bot = new fbChatBot('/webhook/', 3000, '<random verify_token>', '<page access_token>', true);

bot.subscribe(function(error, response, body) {
	console.log(error);
	console.log(body);
});

bot.on('message', function(message) {
	console.log(message);
});

Redeploy your server. You do not need to manually subscribe your app. 6. You can now start receiving messages. Send a message to your page, and the message object should appear in your console. 7. Reply to messages. Modify your code to this to reply a standard phrase on every message.

var fbChatBot = require('fb-chatbot');

var bot = new fbChatBot('/webhook/', 3000, '<random verify_token>', '<page access_token>', true);

bot.subscribe(function(error, response, body) {
	console.log(error);
	console.log(body);
});

bot.on('message', function(message) {
	bot.sendTextMessage(message.sender, 'Hello! You are chatting with a bot', function(error, response, body) {
  	  console.log(error);
  	  console.log(body);
    });
});

How to use

1. Initialize

var fbChatBot = require('fb-chatbot');
//var bot = new fbChatBot('<webhook url>', <server port>, <fb webhook verify token>, <fb page access token> , true); 
var bot = new fbChatBot('/webhook/', 3000, process.env.FB_WEBHOOK_VERIFY_TOKEN, process.env.FB_ACCESS_TOKEN, true); 

2. Receive messages

You can receive messages by listening to specific events: Any type of message received

bot.on('message', function(message) {
	console.log(message);
});

Any type of message received from specific user

    bot.on('[senderid]->message', function(message) {
  	  console.log(message);
    });

Example:

    bot.on('111122223333->message', function(message) {
  	  console.log(message);
    });

Any type of message received for specific page

    bot.on('message->[page_id]', function(message) {
  	  console.log(message);
    });

Example:

    bot.on('message->111122223333', function(message) {
  	  console.log(message);
    });

Text Message received

    bot.on('text', function(message) {
      console.log(message);
    });

Text message received from specific user

   bot.on('[senderid]->text', function(message) {
     console.log(message);
   });

Example:

    bot.on('111122223333->text', function(message) {
      console.log(message);
    });

Text message received for specific page

    bot.on('text->[page_id]', function(message) {
      console.log(message);
    });

Example:

    bot.on('text->111122223333', function(message) {
      console.log(message);
    });

Attachment received

    bot.on('attachment', function(message) {
      console.log(message);
    });

Attachment received from specific user

    bot.on('[senderid]->attachment', function(message) {
      console.log(message);
    });

Example:

    bot.on('111122223333->attachment', function(message) {
      console.log(message);
    });

Attachment received for specific page

    bot.on('attachment->[page_id]', function(message) {
      console.log(message);
    });

Example:

    bot.on('attachment->111122223333', function(message) {
      console.log(message);
    });

3. Send messages

Messages are sent using the Facebook Graph API.

bot.sendTextMessage(<sender>, <text>)
.then(function(response) {
		
});

Example:

bot.on('text', function (event) {
  console.log('Text received:' + event.data + ' from:' + event.sender);
  bot.sendTextMessage(event.sender, "Hello you said " + event.data)
    .then(function(response) {

    })
    .catch(function(err) {

    })
});