botpress-messenger
Official Facebook Messenger connector module for Botpress.
This module has been build to accelerate and facilitate development of Messenger bots.
Usage with UMM
There's 3 supported UMM messages: text, attachments and templates. For doing anything else, please use code (see the other methods supported in bp.messenger
below).
Note on Messenger UMM
All of the Messenger messages support the
typing
option. You can specifytrue
a number (of milliseconds) or a natural duration string (e.g.4s
).
Sending Text
content.yml
welcome: - Hello, world! - This is a message on Messenger! - text: this works too! typing: 2s - | This is a multi-line message :).
Quick Replies
Sending Text withTip: We created a shortcut for specifying quick replies and their payloads.
<EXAMPLE_PAYLOAD> This is the text <.EXAMPLE_PAYLOAD> Text In the latter, starting the payload with a dot (
.
) will prepend the name of the bloc to the postback
content.yml
welcome: - text: Hello, world! typing: 250ms quick_replies: - <QR_YES> Yes - <QR_NO> No
content.yml
welcome: - text: Hello, world! quick_replies: - <.QR_YES> Yes - <.QR_NO> No
In this example, the payloads will be welcome.QR_YES
and welcome.QR_NO
respectively.
content.yml
welcome: - text: Hello, world! quick_replies: - content_type: text title: Yes payload: QR_YES - content_type: text title: No payload: QR_NO image_url: http://petersfantastichats.com/img/green.png - content_type: location
Templates
SendingTip: We created a shortcut for specifying buttons and their payload (same as quick replies)
<EXAMPLE_PAYLOAD> This is the text
content.yml
welcome: - on: facebook template_type: button text: Please click any of the buttons below buttons: - <BTN_RANDOM> Random cat videos - type: postback title: This button gives the same thing payload: BTN_RANDOM - type: web_url url: https://youtube.com/?q=cats title: Cats on Youtube
Attachments
SendingTip: We created shortcuts for all the attachment types (see examples)
content.yml
welcome: - on: facebook image: https://botpress.io/static/img/nobg_primary_black.png - on: facebook video: https://www.youtube.com/watch?v=QIokUU4HAKU - on: facebook attachment: video url: https://www.youtube.com/watch?v=QIokUU4HAKU
Installation
Installing modules on Botpress is simple. By using the CLI, you only need to type this command in your terminal to add the messenger module to your bot.
botpress install messenger
It's also possible to install it through the Botpress UI in the modules section.
Get started
To setup connexion of your chatbot to Messenger, you need to fill the connexion settings directly in the module interface. In fact, you only need to follow these 5 steps and your bot will be active.
We highly recommand to set your configuration in the botpress-messenger.config.yml
file that has been automatically created for you, so you won't have any problem to migrate and commit your configuration settings. Settings in this file can (and should) be overwritten by environment variables in production.
Tip: You can also set all the other configs using this configuration file, simply add them and it will override the configuration set in the database.
Facebook page and a Messenger application.
1. Create a2. Get App ID and App Secret
These information are available on dashboard of developers page. You only need to copy them in module interface.
3. Get Access token
Acces token is available in Messenger section of developers. You need to copy it in the appropriate section of botpress-messenger UI.
4. Setup Hostname
You need to manually set your hostname, here are some you secure tunnels to localhost tools, we suggest you to use for local development:
- pagekite (highly recommanded, to get a fix url)
- localtunnel (recommanded)
- ngrok (recommanded)
In production, the hostname is your public server hostname (for example your heroku address).
5. Connect
Tip: To see in details how to configure completly this module, videos are available on our Youtube Channel
Features
Incoming
Outgoing
- Text messages
- Attachments
- Templates
- Quick replies
- Automatic typing indicator
- Postbacks
- Referrals
- Display Get Started
- Greeting message
- Persistent menu
- Automatically mark as read
- Composer input disabled
- Trusted domains
- Automatic profile lookup
- Save users in DB
- Webhook security check
Reference
Incoming
You can listen to incoming event easily with Botpress by using bp
built-in hear
function. You only need to listen to specific Messenger event to be able to react to user's actions.
bp
In fact, this module preprocesses almost all types of message (message, attachment, postback, quick_reply, delivery, read, optin, referrals...) and send them to incoming middlewares. When you build a bot or a module, you can access to all information about incoming messages that have been send to middlewares.
bpmiddlewares
Profile
You can acces to all user's profile information by using this module. A cache have been implemented to fetch all information about users and this information is sent to middlewares.
id: profileid platform: 'facebook' gender: profilegender timezone: profiletimezone locale: profilelocale
Note: All new users are automatically saved by this module in Botpress built-in database (bp.db
).
Text messages
An event
is sent to middlewares for each incoming text message from Messenger platform with all specific information.
platform: 'facebook' type: 'message' user: profile text: emessagetext raw: e
Then, you can listen easily to this event
in your module or bot
bp
Postbacks
platform: 'facebook' type: 'postback' user: profile text: epostbackpayload raw: e
Attachments
The original attachments messenger event. May contain multiple attachments. Individual attachments are also emmited individually (see Image, Video, File below)
platform: 'facebook' type: 'attachments' user: profile text: emessageattachmentslength raw: e
Image
Individual Attachment extracted from the Attachments event.
Note that Stickers, Thumbs Up, GIFs and Pictures are considered images too.
platform: 'facebook' type: 'image' // Same for 'video', 'file' and 'audio' user: profile text: 'http://www.image.url' raw: type: 'image' payload: url: '...'
Audio
Video
File
Same signature as Image
above.
Referrals
platform: 'facebook' type: 'referral' user: profile text: ereferralref raw: e
Quick Replies
platform: 'facebook' type: 'quick_reply' user: profile text: emessagequick_replypayload raw: e
Optins
platform: 'facebook' type: 'optin' user: profile text: eoptinref raw: e
Delivery
platform: 'facebook' type: 'delivery' user: profile text: edeliverywatermark raw: e
Read
platform: 'facebook' type: 'read' user: profile text: ereadwatermark raw: e
Outgoing
By using our module, you can send anything you want to your users on Messenger. In fact, this module support all types of messages that are available on Facebook (text, images, videos, audios, webviews...).
Creating actions without sending them
Note that all the below actions are available under two format: send___
and create____
, the latter effectively only creating the middleware Event without sending it to the outgoing middleware. This is useful when combining libraries together (for example Botkit):
// This message won't be sent const message = bpmessenger // But `message` is a fully formed middleware event object, ready to be sent // example using the botpress-botkit module convo
Text messages
In code, it is simple to send a message text to a specific users (facebook doc).
sendText(userId, text, [options])
-> Promise
Arguments
-
userId
(String): Correspond to unique Messenger's recipient identifier. Usually, thisrecipient_id
is available from input message. -
text
(String): Text message that will be send to user. -
options
(Object): An object that may contain:
quick_replies
which is an array of quick replies to attach to the messagetyping
indicator. true for automatic timing calculation or a number in milliseconds (turns off automatically)waitDelivery
the returning Promise will resolve only when the message is delivered to the userwaitRead
the returning Promise will resolve only when the user reads the message
Returns
(Promise): Send to outgoing middlewares a formatted Object
than contains all information (platform, type, text, raw) about the text message that needs to be sent to Messenger platform. The promise resolves when the message was successfully sent to facebook, except if you set the waitDelivery
or waitRead
options.
Example
const userId = 'USER_ID'const text = "Select between these two options?"const options = quick_replies: content_type: "text" title: "Option 1" payload: "DEVELOPER_DEFINED_PAYLOAD_FOR_OPTION_1" content_type:"text" title:"Option 2" payload: "DEVELOPER_DEFINED_PAYLOAD_FOR_OPTION_2" typing: true waitRead: true bpmessenger
Attachments
By using this function, you can send any type of attachment to your users (facebook doc).
sendAttachment(userId, type, url, [options])
-> Promise
Arguments
-
userId
(String): Correspond to unique Messenger's recipient identifier -
type
(String): Specific type of attachment can be'audio'
,'file'
,'image'
or'video'
-
url
(String): Correspond to specific url of the attachment that need to be sent. -
options
(Object): An object that may contain:
quick_replies
typing
waitDelivery
the returning Promise will resolve only when the message is delivered to the userwaitRead
the returning Promise will resolve only when the user reads the message
Returns
(Promise): Send to outgoing middlewares a formatted Object
than contains all information (platform, type, text, raw) about the attachment that needs to be sent to Messenger platform.
Example
const userId = 'USER_ID'const type = 'image'const url = 'https://botpress.io/static/img/nobg_primary_black.png' bpmessenger
Templates
By using this module, it's easy to send any type of supported template to your users (facebook doc).
sendTemplate(userId, payload, [options])
-> Promise
Arguments
-
userId
(String): Correspond to unique Messenger's recipient identifier -
payload
(Object): Specificpayload
object for your selected template. Actually, many types of template (button, generic, list, receipt...) are supported by Messenger. -
options
(Object): An object that may contains:
typing
waitDelivery
the returning Promise will resolve only when the message is delivered to the userwaitRead
the returning Promise will resolve only when the user reads the message
Returns
(Promise): Send to outgoing middlewares a formatted Object
than contains all information (platform, type, text, raw) about the template that needs to be sent.
Example
const userId = 'USER_ID'const payload = template_type: "button" text: "Have you seen our awesome website?" buttons: type: "web_url" url: "https://www.botpress.io" title: "Show Website" bpmessenger
Quick replies
By using options
argument, you can easily add quick replies to text messages or attachments.
const options = quick_replies: content_type :"text" title: "Option" payload: "DEVELOPER_DEFINED_PAYLOAD_FOR_OPTION"
Automatic typing indicator
As quick replies, you can add an automatic typing indicator to your messages by adding typing
to options
argument.
const options = typing: true
Postbacks
This module support postbacks. Postbacks occur when a Postback button, Get Started button, Persistent menu or Structured Message is tapped (facebook doc).
Referrals
This module also support referrals. In fact, the value of the ref
parameter is passed by the server via webhook and we are able to access these referrals in parameters of input messages (facebook doc).
Display Get Started
To active get started button on Messenger, users can modify display setting directly in user interface (facebook doc).
Greeting message
Directly in module view, users are able to modify greeting message (facebook doc).
Persistent menu
Users can directly modify persistent menu in module user interface. By using UI, it's possible to add, modify and remove items (facebook doc).
Automatically mark as read
Directly in UI, users can setup if they want to automatically mark all messages as read (facebook doc).
Composer input disabled
Directly in UI, users can setup if they want to deactivate or not the user input (facebook doc).
Trusted domains
By using UI, users can configure (add, modify and remove) trusted domains (facebook doc).
Chat Extensions
Using the UI, you can set the home URL for your chat extension (facebook doc).
Note: the URL you specify must use HTTPS. Facebook will return an error if you enter an URL that is not using HTTPS.
Chat extensions supports the following configuration options:
- Update Home URL: the url that hosts your chat extension. You can remove the URL by leaving the box blank.
- Show Share Button: if checked, this will show a Facebook share button in the header of your webview.
- In Test: if checked, your chat extension is in test mode and is only viewable by people associated with your Messenger app in the developer console. Uncheck this box when you want your chat extension to be viewable to the general public
Payment Testers
Using the UI, you can assign users to be "Payment Testers."
In order for this to work, the user must be a registered admin, developer or test user through your Facebook developer console and they must have initiated conversation with your bot. You cannot just add any user to be a payment tester. It is also important to note that this is the only way to run a test payment with Messenger Extensions.
When adding a new user, you can start typing their name into the box. This will pull up a list of matching users who have been communicating with your bot. The value in the parentheses is the page-scoped user ID for that user.
Automatic profile lookup
Profiles are automatically lookedup using Facebook Graph API. The profile of the user can be found in the incoming middleware events: event.user
The following properties are available: first_name, last_name, locale, gender, timezone.
Save users in Database
Users are automatically persisted in the built-in botpress database using the built-in bp.db.saveUser
function.
Webhook security check
botpress-messenger verifies that requests really come from Facebook's servers by validating requests hash.
Example
- Botpress examples (soon).
- Youtube Channel (soon).
Community
There's a Slack community where you are welcome to join us, ask any question and even help others.
Get an invite and join us now! 👉 https://slack.botpress.io
License
botpress-messenger is licensed under AGPL-3.0