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How can I make my Google App Script wait for an answer in telegram bot then run the if statement? – Telegram API

How do I make my Google App Script wait for an answer in telegram bot and run my if statement afterwards?

My idea of the code is:
When I type /survey, it will run the following code which will post a question, "how are you?". The script will wait for me to type any text, afterwards run my if statement when the answer is typed in.

function survey(data){
  var Q1 = {
    'chat_id': data.message.chat.id,
    'text': 'how are you?'
  }
  var method = 'sendMessage';
  var options = {
    'method' : 'post',
    'contentType': 'application/json',
    'payload' : JSON.stringify(Q1)
  }
  var response = UrlFetchApp.fetch('https://api.telegram.org/bot' + telegramToken + '/' + method, options);

var text = data.message.text;
if(text == ""){
   currentstep = '3'; //need help here
}
Tags:

2

Answers


  1. 0

    You can use Promises or async/await, in this way your IF statement will wait for response from API and executed as soon you get response.

    async function survey(data){
  var Q1 = {
    'chat_id': data.message.chat.id,
    'text': 'how are you?'
  }
  var method = 'sendMessage';
  var options = {
    'method' : 'post',
    'contentType': 'application/json',
    'payload' : JSON.stringify(Q1)
  }
  var response = await UrlFetchApp.fetch('https://api.telegram.org/bot' + telegramToken + '/' + method, options);

var text = data.message.text;
if(text == ""){
   currentstep = '3'; //need help here
}

    OR

    function survey(data){
  var Q1 = {
    'chat_id': data.message.chat.id,
    'text': 'how are you?'
  }
  var method = 'sendMessage';
  var options = {
    'method' : 'post',
    'contentType': 'application/json',
    'payload' : JSON.stringify(Q1)
  }
  UrlFetchApp.fetch('https://api.telegram.org/bot' + telegramToken + '/' + method, options).then((data)=>{
var text = data.message.text;
if(text == ""){
   currentstep = '3'; //need help here
}
})
}
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  2. 0

    Perhaps what can accommodate your needs is the reply_markup parameter with ForceReply, available in almost all send methods in the Telegram Bot API. As mentioned:

    ForceReply can be extremely useful if you want to create user-friendly
    step-by-step interfaces without having to sacrifice privacy mode

    You can see a sample JSON response from ForceReply here. Based on that structure, do the same thing by calling data.message.text to get the results of user input from ForceReply.

    if ( (( data || {} ).message || {}).text ){
  
  if ( data.message.text === "/start" ) {
  
    var dataForceReply = {
      method: "post",
      payload: {
        method: "sendMessage",
        chat_id: String( data.message.chat.id ),
        text: "how are you?",
        reply_markup: JSON.stringify({
          "force_reply": true
        })
      }
    };
    UrlFetchApp.fetch( telegramAPIURL + "/", dataForceReply );

  } else { //Assumed the user gives input
    
    var text = data.message.text;
    
    if ( text === "" ) {
      var currentstep = "3";
    } else {
      //Process according to your needs
    }

  }

}
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