Messenger Platform Go SDK

A Go SDK for the Facebook Messenger Platform.

Installation

go get gopkg.in/maciekmm/messenger-platform-go-sdk.v4

Usage

The main package has been named messenger for convenience.

Your first step is to create Messenger instance.

import "gopkg.in/maciekmm/messenger-platform-go-sdk.v4"

//...

messenger := &messenger.Messenger {
	VerifyToken: "VERIFY_TOKEN/optional",
	AppSecret: "APP_SECRET/optional",
	AccessToken: "PAGE_ACCESS_TOKEN",
	Debug: messenger.DebugAll, //All,Info,Warning
}

Parameters

• VerifyToken is the token needed for a verification process facebook performs. It's only required once. Optional.
• AppSecret is the Application Secret token. It's used for message integrity check. Optional.
• AccessToken is required to send messages. You can find this token in your app developer dashboard under Messenger tab.
• Debug is used for setting debug mode type as described on https://developers.facebook.com/docs/graph-api/using-graph-api#debugging. Optional.

The next step is to hook up the handler to your HTTP server.

//hook up
http.HandleFunc("/webhook", messenger.Handler)
//start the server
http.ListenAndServe(":5646", nil)

The next step is to subscribe to an event, to do that you have to hook up your own handler.

messenger.MessageReceived = MessageReceived

//...

func MessageReceived(event messenger.Event, opts messenger.MessageOpts, msg messenger.ReceivedMessage) {
//do stuff
}

Sending messages

Example

Check more examples in examples folder.

var mess = &messenger.Messenger{
	AccessToken: "ACCESS_TOKEN",
}

func main() {
	mess.MessageReceived = MessageReceived
	http.HandleFunc("/webhook", mess.Handler)
	log.Fatal(http.ListenAndServe(":5646", nil))
}

func MessageReceived(event messenger.Event, opts messenger.MessageOpts, msg messenger.ReceivedMessage) {
	profile, err := mess.GetProfile(opts.Sender.ID)
	if err != nil {
		fmt.Println(err)
		return
	}
	resp, err := mess.SendSimpleMessage(opts.Sender.ID, fmt.Sprintf("Hello, %s %s, %s", profile.FirstName, profile.LastName, msg.Text))
	if err != nil {
		fmt.Println(err)
	}
	fmt.Printf("%+v", resp)
}