WPFBBotKit

WPFBBotKit provides an easy way for developers to start creating bots with the Facebook Messenger Platform. WPFBBotKit is not a bot itself, but allows you to easily verify and receive webhook requests from the Messenger Platform and send responses from your bot via a simplified API.

Getting Started

Download or clone this repo and install via the WordPress plugin installer.
Access WPFBBotKit Settings via the "WPFBBotKit" menu option under "Settings" in the wp-admin.
Follow the Messenger Platform setup guide to set up your bot using the Webhook URL and Verification String from the WPFBBotKit Settings page.

Usage

Receive messages via the wpfbbk_message_received hook which will provide an instance of WPFBBK_Messaging as its only argument.

add_action( 'wpfbbk_message_received', function( $M ) {
	# bot code here
}, 10, 1 );

When a message has been received, you'll have access to the message's text and/or postback content as well as a few helper functions to help you respond to the message and find out information about the sender.

add_action( 'wpfbbk_message_received', function( $M ) {

	// Retrieve user's info from Facebook API
	$info = $M->get_user_info();
	
	// set fallback since user info is not guaranteed
	$name = $info->first_name ? $info->first_name : 'Human';
	
	if ( ! $M->postback ){
	
		// if no postback  is set, respond to text message
		if ( 'hello' === $M->text || 'hi' === $M->text ) {
			$M->reply_with_text( "Hi $name!", true );
			$M->reply_with_image_url( 'https://media.giphy.com/media/13TXV4kfn7r2iA/giphy.gif' );
		} else {
		
			// reply_with_buttons is one of a few reply helpers provided by `WPFBBK_Messaging`
			$M->reply_with_buttons(
				"Sorry, $name. I don't understand what you said. Do you want me to send you a gif?",
				array(
					array(
						'type'  => 'postback',
						'title' => '👍  Sure.',
						'payload' => 'REPLY_WITH_GIF',
					),
					array(
						'type'  => 'postback',
						'title' => '👎  No, go away.',
						'payload' => 'NO_REPLY',
					),
				)
			);
		}
	} else {
	
		// postback has been received
		if( 'REPLY_WITH_GIF' === $M->postback ) {
			$M->reply_with_image_url( 'https://media.giphy.com/media/13TXV4kfn7r2iA/giphy.gif' );
		}
	}
}, 10, 1 );

Additionally, a wpfbbk_request_received action is fired whenever the webhook url is hit and provides an instance of the WP_REST_Request object for the request.

// debug requests sent to webhook
add_action( 'wpfbbk_request_received', function( $req ) {
   error_log( print_r( $req->get_raw_data(), 1 ) );
}, 10, 1 );

Finally, a wpfbbk_before_send_request filter is applied before sending any request via WPFBBK::api_send() which provides an opportunity to bypass the built-in sending functionality and offload sending API requests to a queue. Documentation for this hook can be found inline in WPFBBK::api_send().

// send requests to queue instead of using WPFBBK::api_send()
apply_filters( 'wpfbbk_before_send_request', function( $request_handled, $method, $url, $data ) {
   if ( ! $request_handled ) {
       $request_handled = SomeOtherClass::queueRequest( $method, $url, $data );
   }
   return $request_handled;
}, 10, 4 );

Requirements

Requires WordPress 4.7 or better since WPFBBotKit utilizes the WordPress Rest API.

License

This project is licensed under the GPL V2 License - see the LICENSE file for details

Credits

WPFBBotKit was created by Jeff Gould from Delicious Brains

License

manuhook/wpfbbotkit

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