Dialogflow.js

require(Modules.ASR);
let mycall = null;

VoxEngine.addEventListener(AppEvents.CallAlerting, (e) => {

  mycall = e.call;
  mycall.addEventListener(CallEvents.Connected, handleCallConnected);
  mycall.answer();

});

function handleCallConnected() {
  
  mycall.say("Hi, my dear friend! Ask me about the weather in San Francisco or other city.", Language.US_ENGLISH_FEMALE); 
  
  myasr = VoxEngine.createASR({
    lang: ASRLanguage.ENGLISH_US
  });
  
  mycall.addEventListener(CallEvents.PlaybackFinished, function onWelcomeFinished() {
    mycall.sendMediaTo(myasr);
    mycall.removeEventListener(CallEvents.PlaybackFinished, onWelcomeFinished);
  });
  
  mycall.addEventListener(CallEvents.Disconnected, VoxEngine.terminate);
  
  myasr.addEventListener(ASREvents.Result, (e) => {
    
    recognitionEnded();
    const userSpeech = e.text;
    const sessionId = () => Math.floor(100000 * Math.random());
    Net.httpRequest("https://api.dialogflow.com/v1/query?v=20170712&contexts=weather&query=" +
                    encodeURI(userSpeech) +
                    "&lang=ru&sessionId=" + sessionId() + "&timezone=Europe/Moscow", (e) => {
      const res = JSON.parse(e.text);
      if (!res.result || res.result.action !== "weather"){
        mycall.say("Sorry, something went wrong, please try again", Language.US_ENGLISH_FEMALE);
        mycall.addEventListener(CallEvents.PlaybackFinished, firstPlaybackFinished);
      }
      else if (!res.result.parameters || !res.result.parameters.location["city"] ){
        mycall.say("Couldn't recognize your phrase", Language.US_ENGLISH_FEMALE);
        mycall.addEventListener(CallEvents.PlaybackFinished, firstPlaybackFinished);
      }
      else {
        const city = res.result.parameters.location["city"];
        Net.httpRequest("https://api.openweathermap.org/data/2.5/weather?q=" +
                        city +
                        "&lang=en&appid=4e078747a16a1f2d9351e2419b65ec3a", (e) => {
            const weather = e.text;
            const weatherDescription = JSON.parse(weather);
            mycall.say("It's " + weatherDescription.weather[0].description + " in " + city + " today.", Language.US_ENGLISH_FEMALE);
            mycall.addEventListener(CallEvents.PlaybackFinished, () => {
              VoxEngine.terminate();
            });
          });
      }
    }, 
    { headers: ["Authorization: bearer 1799227ce77f446fa8d64749f70527ca"]});
    
  });
}  


function recognitionEnded(){
  myasr.stop();
}

function firstPlaybackFinished() {
  mycall.removeEventListener(CallEvents.PlaybackFinished, firstPlaybackFinished);
  handleCallConnected();
}