前言:

   選定了第一種架構圖和開發語言Node.js，那就開始寫codig。

開發工具:

  1.下載Node.js  https://nodejs.org/en/  (後面是用Mac示範)
  2.下載Visual Studio Code  https://code.visualstudio.com/?wt.mc_id=vscom_downloads

Framework

Firebase Functions:

const functions = require('firebase-functions')
// ... app code here
exports.fulfillment = functions.https.onRequest(app)

Actions Console Inline Editor:

const functions = require('firebase-functions')

// ... app code here

// name has to be `ActionsOnGoogleFulfillment`
exports.ActionsOnGoogleFulfillment = functions.https.onRequest(app)

Self Hosted Express Server:

const express = require('express')
const bodyParser = require('body-parser')

// ... app code here

const expressApp = express().use(bodyParser.json())

expressApp.post('/fulfillment', app)

expressApp.listen(8080)

意圖處理(intent_process)

// ... app code start here
//build an app instance in your fulfillment webhook, follow these steps:
//step1:Call the require() function
// Import the service function and various response classes
const {
  dialogflow,
  actionssdk,
  Image,
  Table,
  Carousel,
  Payload,
  Permission
} = require('actions-on-google');


//step2:configure the app instance
const app = dialogflow({
  debug: true
});

//intent process
app.intent('intent_name', (conv) => {

	conv.ask('How are you?'); //回覆文字

});

// ... app code end here

//external API start

//external API end

使用心得:
     利用上面的方法，就可以輕鬆專注的開發意圖處理(intent_process)。

參考:
https://github.com/actions-on-google/assistant-conversation-nodejs
https://github.com/googleapis/nodejs-dialogflow
https://developers.google.com/assistant/conversational/df-asdk/reference/nodejsv2/overview