Actions on Google SDK

actions.json

{
  "actions": [
    {
      "description": "Default Welcome Intent",
      "name": "MAIN",
      "fulfillment": {
        "conversationName": "welcome"
      },
      "intent": {
        "name": "actions.intent.MAIN",
        "trigger": {
          "queryPatterns":["talk to CCAIDemo"]
        }
      }
    },
    {
      "description": "Dialogflow Intents",
      "name": "TEXT",
      "fulfillment": {
        "conversationName": "dialogflow_intent"
      },
      "intent": {
        "name": "actions.intent.TEXT",
        "trigger": {
          "queryPatterns": []
        }
      }
    }
  ],
  "conversations": {
    "welcome": {
      "name": "welcome",
      "url": "https://5d9233546d75.ngrok.io/aog/"
    },
    "dialogflow_intent": {
      "name": "dialogflow_intent",
      "url": "https://5d9233546d75.ngrok.io/aog/"
    }
  },
  "locale": "en"
}

aog-integration.js

// Import the appropriate service and chosen wrappers
const { actionssdk } = require('actions-on-google');
const dialogflow = require('@google-cloud/dialogflow');
const uuid = require('uuid');
 
// Create an app instance
const app = actionssdk()
 
// Register handlers for Actions SDK intents
app.intent('actions.intent.MAIN', async (conv) => {
    // Detect Dialogflow Intent based on Welcome Event
    var queryInput = {
        event: {
            name: 'WELCOME',
            languageCode: 'en'
        }
    };
    var response = await dialogflowDetection(queryInput);

    // Let the Google Assistant speak it out
    conv.ask(response.response.queryResult.fulfillmentText);
})
 
app.intent('actions.intent.TEXT', (conv, input) => {
    // Pass all the text input (transcribed from Google Assistant Speech to Text)
    // To Dialogflow, to do an intent detection on text.
    var queryInput = {
        text: {
            text: input,
            languageCode: 'en'
        }
    };
    var response = await dialogflowDetection(queryInput);

    // Let the Google Assistant speak it out
    conv.ask(response.response.queryResult.fulfillmentText);
});

async function dialogflowDetection(){
    const sessionId = uuid.v4();
    // Create a new session
    const sessionClient = new dialogflow.SessionsClient();
    const sessionPath = sessionClient.projectAgentSessionPath(projectId, sessionId);

    const request = {
        session: this.sessionPath,
        queryInput: qInput,
        queryParams: null
    };

    const [response] = await this.sessionClient.detectIntent(request);
    return response;
}