This document briefs you on how to connect Orbita to the Facebook messenger bot.

Setting up Facebook

In order to set up the Facebook integration for your agent, you'll need the following:

• a Facebook account

• a Facebook page to add your chatbot

When a user visits your page and sends a message, they'll be talking to your chatbot.

Create a Facebook App

1. Log in to the Facebook Developer Console.

2. Click on My Apps in the upper right-hand corner.

3. Click on Create App

4. Select Manage Business Integrations and click Continue.

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5. Add a display name and click on Create App.

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Making the App Public

1. Go to the App page and click on Settings > Basics.

2. Fill in the necessary details and click on Save Changes.

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3. Toggle the status to ON. Click on Confirm in the pop-up dialog box.
   

Adding messenger to your App

1. Click on Products from the side menu, select Messenger, and click on the Set Up button.

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2. In the Products > Messenger > Settings page, click on “Add or Remove Pages” to add your Facebook page to the App.

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Access Tokens

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In the Access tokens section of the settings page, click on the Generate token against the page you added.

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Webhooks

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In the Webhooks section, click on Add Callback URL.

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Click on the “Add Subscriptions” button and check the messages and messaging_postbacks options. Click on Save.

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The Webhooks should have a "Complete" status with a green tick as shown in the screenshot below.

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Make the app public

Please ensure to toggle on the Live status to make the app public.

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For Business users, you need to do Business Verification to make the app public.
Click on the Get started and submit the verification to Facebook.

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Setting up the Experience Designer

Connect two function nodes before and after Bot provider V2 node. One for getting the input from Facebook and the other to Process the output sent to Facebook.

Design a flow as shown below.

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For Facebook to verify

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Orbita’s callback URL

1. Add “http in” node with URL as bot/messenger dockflow and the Method: GET

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2. Add a function node (named Verification node in the sample flow screenshot) with the following code.
   

   Code Block
   msg.payload = msg.payload['hub.challenge'];

   
   

   return msg;

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3. Add the “http out” node to the flow.

Connecting the chatbot with Facebook messenger

Add “http in” node with URL as bot/dockflow and the Method: POST

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FB input

Place the below code in this function node.

ifvar _ = global.get('lodash')
var text = _.get(msg.payload., "entry[0].messaging[0].message.text", "");
var senderId =  _.get(msg.payload.text, "entry[0].messaging[0].sender.id", "");
var recipientId = _.get(msg.payload., "entry[0].messaging[0].message.text 
elserecipient.id", "");

if(text){
    msg.payload.text = text
}
else{
    msg.payload.text="Launch"
    msg.payload.fbSenderId = sid;
}
if(!msg.payload.entry[0].messaging[0].sender.id;.data){
    msg.data = {};
}

// while repling back to the messenger the senderId and the recipientId should be swapped.
msg.data.senderId = recipientId;
msg.data.recipientId = senderId;

return msg;

Process FB output

Place the below code in this function node. Replace the in the code with Facebook’s Place the Facebook page Access token you copied generated when the page is connected to the Facebook App., in the code (denoted by XXXXXX)

var stripTags = msg.payload.orbitaPayload.payload.multiagent.chat.chatText.replace(/<[^>]+>/g, '')

msg.payload=
{
  "messaging_type": "RESPONSE",
  "sender": {
     "id": msg.data.senderId
  },
  "recipient": {
     "id": msg.orginalPayloaddata.fbSenderIdrecipientId
  },
  "message": {
    "text":stripTags
   
  }
}


msg.url = "https://graph.facebook.com/v4.0/me/messages?access_token=XXXXXX"
msg.method = 'POST';
msg.headers = {};
msg.headers['Content-Type'] = 'application/json';
return msg;

http request

Configure this the HTTP request node as shown in the below screenshot before connecting it to the “http out” node.

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Sample flow

Import this flow

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to your Experience Designer to avoid the above steps.

Setting up Facebook

In order to set up the Facebook integration for your agent, you'll need the following:

• a Facebook account

• a Facebook page to add your chatbot

When a user visits your page and sends a message, they'll be talking to your chatbot.

Create a Facebook App

1. Log in to the Facebook Developer Console.

2. Click on My Apps in the upper right-hand corner.

3. Click on Create App

4. Select Manage Business Integrations and click Continue.

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5. Add a display name and click on Create App.

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Creating an App for the integration

1. Go to the App page and click on Settings > Basics.

2. Fill in the necessary details and click on Save Changes.
   

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Adding messenger to your App

1. Click on Products from the side menu, select Messenger, and click on the Set Up button.
   

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2. In the Products > Messenger > Settings page, click on “Add or Remove Pages” to add your Facebook page to the App.
   

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3. Select the pages you wanted to add the chatbot to and click on Next.
   

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4. Toggle the Manage and access the Page conversations on Messenger option to ON and click Done.
   

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Access Token

1. In the Access tokens section of the Settings page, click on the Generate Token against the page you added.
   

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2. Check the I Understand checkbox, Copy the token, and click Done.
   

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3. Go to Experience Designer > FB Chatbot flow > Process FB output function node.
   Replace the XXXXXX with the copied token in the msg.url property.
   

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4. Click Done and Deploy the flow.

Webhooks

1. In the Webhooks section, click on Add Callback URL.

2. Copy your web chatbot URL and paste it here.
   For example,https://<yourdomain>.orbita.cloud:8443/oeapi/bot/dockflow

3. Click on Verify and save.
   

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4. Facebook will post a request to the callback URL and the Verify Token will be auto-populated and saved in the Facebook app.
   

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5. Click on the “Add Subscriptions” button and check the messages and messaging_postbacks options and click on Save.
   

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You have now successfully connected your Facebook page messenger with Orbita’s chatbot.

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