index.js

process.env.GOOGLE_APPLICATION_CREDENTIALS = "./auth.json";

const dialogflow = require('@google-cloud/dialogflow');

const projectId = "caloriestracking-ebxh"
const sessionId = "123453232121"


// Instantiates a session client
const sessionClient = new dialogflow.SessionsClient();

async function detectIntent(
  projectId,
  sessionId,
  query,
  contexts,
  languageCode
) {
  // The path to identify the agent that owns the created intent.
  const sessionPath = sessionClient.projectAgentSessionPath(
    projectId,
    sessionId
  );

  // The text query request.
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        text: query,
        languageCode: languageCode,
      },
    },
  };

  if (contexts && contexts.length > 0) {
    request.queryParams = {
      contexts: contexts,
    };
  }

  const responses = await sessionClient.detectIntent(request);
  return responses[0];
}

async function executeQueries(projectId, sessionId, query, languageCode) {
  // Keeping the context across queries let's us simulate an ongoing conversation with the bot
}


// exports.handler = async (event) => {

const handler = async (event) => {

  const query = "hello"

  const languageCode = "en-US"


  let context;
  let intentResponse;
  try {
    console.log(`Sending Query: ${query}`);
    intentResponse = await detectIntent(
      projectId,
      sessionId,
      query,
      context,
      languageCode
    );

    console.log('Detected intent');
    console.log(
      `Fulfillment Text: ${intentResponse.queryResult.fulfillmentText}`
    );
    return {
      statusCode: 200,
      body: JSON.stringify(`Fulfillment Text: ${intentResponse.queryResult.fulfillmentText}`)
    };
    // Use the context from this response for next queries
    context = intentResponse.queryResult.outputContexts;
    return intentResponse
  } catch (error) {
    console.log(error);
    return {
      statusCode: 200,
      body: JSON.stringify(`Something went wrong`)
    };
  }
  // const response = {
  //   statusCode: 200,
  //   body: JSON.stringify(`Fulfillment Text: ${intentResponse.queryResult.fulfillmentText}`)
  // };
  // return response;
};

handler()