messenger

README

Messenger

Messenger is a Facebook Messenger target for fsm.

Environment Variables

When using this target, you must set two environment variables:

MESSENGER_VERIFY_TOKEN=""
MESSENGER_ACCESS_TOKEN=""

Getting Started

Note: The environment variables above are assumed to be set in this example code:

package main

import (
	"net/http"

	"github.com/fsm/fsm"
	"github.com/fsm/messenger"
	"github.com/julienschmidt/httprouter"
)

func main() {
	router := &httprouter.Router{
		RedirectTrailingSlash:  true,
		RedirectFixedPath:      true,
		HandleMethodNotAllowed: true,
    }

	router.HandlerFunc(http.MethodGet, "/facebook", messenger.SetupWebhook)
    router.HandlerFunc(http.MethodPost, "/facebook", messenger.GetMessageReceivedWebhook(getStateMachine(), getStore()))

	http.ListenAndServe(":5000", router)
}

func getStateMachine() fsm.StateMachine {
	// ...
}

func getStore() fsm.Store {
	// ...
}

License

MIT

Documentation

Index

• func GetMessageReceivedWebhook(stateMachine fsm.StateMachine, store fsm.Store) func(http.ResponseWriter, *http.Request)
• func SetupWebhook(w http.ResponseWriter, r *http.Request)

Functions

func GetMessageReceivedWebhook

func GetMessageReceivedWebhook(stateMachine fsm.StateMachine, store fsm.Store) func(http.ResponseWriter, *http.Request)

GetMessageReceivedWebhook is the webhook that facebook posts to when a message is received from a user.

This must be a POST request, and have the same URL as the GET request.

https://developers.facebook.com/docs/messenger-platform/getting-started/webhook-setup

func SetupWebhook

func SetupWebhook(w http.ResponseWriter, r *http.Request)

SetupWebhook adds support for the Messenger Platform's webhook verification to your webhook. This is required to ensure your webhook is authentic and working.

This must be a GET request, and have the same URL as the POST request.

https://developers.facebook.com/docs/messenger-platform/getting-started/webhook-setup