Facebook messager receive message

fb_messager.py

@app.route(config.web_hook_url, methods=["POST"])
def receive_message():
    message_entries = json.loads(request.data.decode("utf-8"))
    print("message_entries:", message_entries)

    for entry in message_entries["entry"]:
        for message in entry["messaging"]:
            sender = message["sender"]["id"]
            # print("sender:", sender)
            if chat_thread.get(sender, None) is None:
                bot = Bot(sender)

                # detect language
                user_req = requests.get("https://graph.facebook.com/v2.6/{user_id}?access_token={token}"
                                        .format(user_id=sender, token=config.access_token))
                if user_req.status_code == 200:
                    bot.locale = user_req.json()["locale"]
                chat_thread[sender] = bot
            else:
                bot = chat_thread[sender]

            if message.get("message"):
                print("\tmessage:", message["message"])
                bot.receive_message(message)
            elif message.get("postback"):
                print("\tpostback:", message["postback"])
                bot.receive_postback(message)

    return Response(status=200)