dialogflowAPI_3.ts

import * as functions from "firebase-functions";
import * as dialogflow from "@google-cloud/dialogflow";
const projectId = "multiple-env-pafg";
// // Start writing Firebase Functions
// // https://firebase.google.com/docs/functions/typescript
let dialogflowEnv = "";
//
export const webHook = functions.https.onRequest((request, response) => {
  if (request.body.destination === "U19476f0931c6ac37972a6b7f4b4321c6") {
    dialogflowEnv = "draft";
  } else if (request.body.destination === "U92a6f010a3fd78085b8763159a04772b") {
    dialogflowEnv = "production";
  }
  const events = request.body.events;
  events.forEach( async (event: any) => {
    console.log(event);
    if (event.type === "message") {
      const text = event.message.text;
      const userId = event.source.userId;
      const output = await detectIntent(text, userId);
      console.log(output);
      // Reply
    }
  });
  response.end();
});

/**
 * detectIntent.
 * @param {strint} message Input message.
 * @param {strint} userId userId.
 * @return {any} The result of DetectIntent from Dialogflow.
 */
async function detectIntent(message: string, userId: string): Promise<any> {
  const sessionId = userId;
  const sessionClient = new dialogflow.SessionsClient({
    projectId,
    keyFilename: "multiple-env-pafg-a9a11f6e8479.json",
  });
  const sessionPath = `projects/${projectId}/agent/environments/${dialogflowEnv}/users/${sessionId}/sessions/${sessionId}`;
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        text: message,
        languageCode: "th-TH",
      },
    },
  };

  // Send request and log result
  const responses = await sessionClient.detectIntent(request);
  const result = responses[0].queryResult;
  return result?.fulfillmentText;
}