write / respond to a group

[goguelnikov]

Hello, Amazing work Brian, thank you so much! The library is really nice and easy to use! I have a question: I can have the bot to get the message / reply when I chat with it directly one to one. I'd like my bot to be part of a Telegram group and be able to get the message from this group and respond to this group. The ESP32 only get triggered when I put "/" at the beginning of the message in a group... and in this case, it does not reply to the group… Do you have any idea? Best

[Hegy]

Hello!

So if you put a code like this you won't get any answer like I do? if (text == "test message") { bot.sendMessage(chat_id, "Test message recieved", ""); }

Please consider to share your code. At least a function which handleNewMessages

[goguelnikov]

Hello, Thanks for your feedback. is it what you get when you invite your bot in the group chat? that's what I a trying to do... the bot should reply in the group the message comes from

[goguelnikov]

here is my code

void handleNewMessages(int numNewMessages) {
  Serial.println("handleNewMessages");
  Serial.println(String(numNewMessages));

  for (int i=0; i<numNewMessages; i++) {
    // Chat id of the requester
    String chat_id = String(bot.messages[i].chat_id);
    if (chat_id != CHAT_ID){
      bot.sendMessage(chat_id, "Unauthorized user", "");
      continue;
    }

    // Print the received message
    String text = bot.messages[i].text;
    Serial.println(text);
    String from_name = bot.messages[i].from_name;

  }
}

it's the standard example. when the bot starts, it posts to the correct group (the one I created with me and the bot). I got "Bot Started" then when I post messages to the group, I have no reaction, except with "/". For example

got response
handleNewMessages
1
/test message

but when I chat directly with the bot, I got: Unauthorized user

[goguelnikov]

No idea? Can anybody help?

[Hegy]

Unauthorized user

Well... It's because you have a condition in your code. If chat_id no equal CHAT_ID then bot .send Message "Unauthorized user"

    if (chat_id != CHAT_ID){
      bot.sendMessage(chat_id, "Unauthorized user", "");
      continue;
    }

No idea? Can anybody help?

Just to double check: Do you have a call of handleNewMessages() from void loop() inside for loop and?

And again! Add this code in your handleNewMessages function inside for loop to answer on text "test message"

if (text == "test message") {
        bot.sendMessage(chat_id, "Test message recieved", "");
    }

Or make it echo bot.

bot.sendMessage(chat_id, text , "");

void handleNewMessages(int numNewMessages) {
  Serial.println("handleNewMessages");
  Serial.println(String(numNewMessages));

  for (int i=0; i<numNewMessages; i++) {
    // Chat id of the requester
    String chat_id = String(bot.messages[i].chat_id);
    //if (chat_id != CHAT_ID){
    //  bot.sendMessage(chat_id, "Unauthorized user", "");
     // continue;
    //}

    // Print the received message
    String text = bot.messages[i].text;
    Serial.println(text);
    String from_name = bot.messages[i].from_name;

    // answer on text "test message"
    if (text == "test message") {
        bot.sendMessage(chat_id, "Test message recieved", "");
    }

    // echo
    bot.sendMessage(chat_id, text , "");

  }
}

[goguelnikov]

I used the standard handleNewMessages you can check the code here : https://github.com/goguelnikov/TelegramMinitelChat/blob/main/src/main.cpp the part : if (chat_id == CHAT_ID){ bot.sendMessage(chat_id, text, ""); } else { bot.sendMessage(chat_id, "Unauthorized", ""); } is commented the handleNewMessages is indeed inside void loop() I'll try you're coode (but I think I did already)

[goguelnikov]

hello here is my code: void handleNewMessages(int numNewMessages) { //Serial.println(F("handleNewMessages")); Serial.print(F("NB message: ")); Serial.println(String(numNewMessages));

for (int i=0; i<numNewMessages; i++) { // Chat id of the requester Serial.print(F("From Chat_ID: ")); String chat_id = String(bot.messages[i].chat_id); Serial.println(chat_id); Serial.print(F("Message: ")); String text = bot.messages[i].text; Serial.println(text); Serial.print(F("From_name: ")); String from_name = bot.messages[i].from_name;

if (chat_id == CHAT_ID){
   bot.sendMessage(chat_id, text, "");
} else {
   bot.sendMessage(chat_id, "Unauthorized", "");
}

} }

here is my complete analysis : If I put the bot in a group with group ID XYZ (Chat_ID)

• if I send a message to from this group : no reply (no log on the serial monitor)
• if I send a message to from another group : no reply (no log on the serial monitor)
• if I send a message directly to the bot (one to one), here I get a reaction From Chat_ID: XXXXXXX Message: hello From_name: and a message "Unauthorized"

If I chat directly withe the bot (Chat_ID = bot_id)

• the bot reacts to message and can reply and send message to me...

[Hegy]

Have you disable Group Privacy in your bot settings?

go to @BotFather send /mybots select your bot click Bot Settings click Group Privacy (it should go like "Privacy mode is disabled for your_bot_name_bot")

REMOVE your bot from the group Add your bot to the group

Please read https://core.telegram.org/bots/features#privacy-mode

[goguelnikov]

yeah !!! it seems to be working ! nice ! this was the problem thank you !