Telegram callback issue with javascripting

Setup, Configuration and Use Beginners
1

I use the telegram binding with dsl code including questions with answers. I tried to build something with java scripting but can’t get it to work. In my understanding based on what I install as automation

automation = jsscripting

this must be based on graaljs in OH 5

Ik have a file called test.js with the following code

var { rules, triggers, actions } = require('openhab');

rules.JSRule({
  name: "Send telegram Goed/Fout bij start",
  triggers: [triggers.ItemCommandTrigger("carBMW_Token_Request")],
  execute: function () {
    console.log("========kort testscript=========");
    var telegramAction = actions.get("telegram", "telegram:telegramBot:Botxxxx");
    if (!telegramAction) {
      console.log("=====Telegram action is NULL – check Thing UID en status!");
      return;
    }
    console.log("=====Telegram bericht versturen");
    telegramAction.sendTelegramQuery(
      "Testbericht bij laden van het script",
      "Reply_Test",
      "Goed",
      "Fout"
    );
  }
});


rules.JSRule({
    name: "Telegram Callback Debugger (clean)",
    triggers: [
        triggers.ChannelEventTrigger("telegram:telegramBot:BotHennie:callbackRawEvent")
    ],
    execute(event) {
        try {
            console.log("===== Telegram callback event ontvangen =====");

            const payload = typeof event.receivedEvent === "string" ? JSON.parse(event.receivedEvent) : event.receivedEvent;
            console.log("Payload geparsed:", payload);

            const callbackId = payload.id;
            console.log("Callback ID:", callbackId, "type:", typeof callbackId);

            const answer = payload.data ? payload.data.split(" ")[1] : "geen antwoord";
            console.log("Antwoord bepalen:", answer);

            const telegramAction = actions.get("telegram", "telegram:telegramBot:BotHennie");
            if (!telegramAction) {
                console.error("Telegram action is NULL!");
                return;
            }

            const JavaString = Java.type("java.lang.String");
            const callbackIdJava = new JavaString(callbackId); // <-- hier! 

            const responseText = answer === "Goed" ? "Prima, actie geregistreerd." : "Oké, actie geregistreerd.";
            const success = telegramAction.sendTelegramAnswer(callbackIdJava, responseText);
            console.log("sendTelegramAnswer returned:", success);

        } catch (err) {
            console.error("Exception in Telegram callback handler:", err, err.stack || "no stack");
        }
    }
});

and in the logfile I get (I modified some names)

2025-11-18 21:44:20.602 [INFO ] [enhab.automation.script.file.test.js] - ========kort testscript=========
2025-11-18 21:44:20.603 [INFO ] [enhab.automation.script.file.test.js] - =====Telegram bericht versturen
2025-11-18 21:44:21.750 [INFO ] [enhab.automation.script.file.test.js] - ===== Telegram callback event ontvangen =====
2025-11-18 21:44:21.752 [INFO ] [enhab.automation.script.file.test.js] - Payload geparsed: {
  "id": "6789276462570019503",
  "from": {
    "id": 1580751609,
    "is_bot": false,
    "first_name": "xxx",
    "language_code": "nl"
  },
  "message": {
    "from": {
      "id": 2137109059,
      "is_bot": true,
      "first_name": "xxxOHBot",
      "username": "xxxOH_bot"
    },
    "text": "Testbericht bij laden van het script",
    "reply_markup": {
      "inline_keyboard": [
        [
          {
            "text": "Goed",
            "callbackData": "Reply_Test Goed"
          },
          {
            "text": "Fout",
            "callbackData": "Reply_Test Fout"
          }
        ]
      ]
    },
    "chat": {
      "id": 1580751609,
      "type": "private",
      "first_name": "xxxx"
    },
    "message_id": 14850,
    "date": 1763498660
  },
  "chat_instance": "2487401512688388006",
  "data": "Reply_Test Fout"
}
2025-11-18 21:44:21.752 [INFO ] [enhab.automation.script.file.test.js] - Callback ID (String): 6789276462570019503
2025-11-18 21:44:21.753 [INFO ] [enhab.automation.script.file.test.js] - Data: Reply_Test Fout
2025-11-18 21:44:21.753 [INFO ] [enhab.automation.script.file.test.js] - Antwoord bepalen: Fout
2025-11-18 21:44:21.753 [WARN ] [gram.internal.action.TelegramActions] - messageId not defined; action skipped.
2025-11-18 21:44:21.758 [INFO ] [enhab.automation.script.file.test.js] - sendTelegramAnswer returned: false

Who knows how this callback should work?

2

I think there needs to be some debug or trace level logs to find out why it returned false.

In general, you usually do not need to convert JS Strings to Java Strings. That specific conversion and a couple of others are usually handled for you. Did you try without the JavaString conversion?

And if it didn’t work using JS Strings, both arguments need to be JavaString, not just the first argument.