index.js

const express = require('express');
const bodyParser = require('body-parser');
const { dialogflow } = require('actions-on-google');
const graph = require('@microsoft/microsoft-graph-client');
const port = process.env.PORT || 4567;
const app = dialogflow({ debug: true });

app.intent('Default Welcome Intent', async conv => {
    const client = graph.Client.init({
        authProvider: (done) => {
            done(null, conv.user.access.token);
        }
    });
    var res = await client.api('/me/devices')
        .version('beta')
        .get();
    const targetDevice = res.value[0];
    conv.contexts.set('device', 5, targetDevice);
    conv.ask(`Hello! I can access your device. Device name is ${targetDevice.Name}. What do you do? Please talk me like "Launch Twitter."`);
});
app.intent("Launch app", async conv => {
    const client = graph.Client.init({
        authProvider: (done) => {
            done(null, conv.user.access.token);
        }
    });
    let url = 'https://bing.com/';
    switch(conv.parameters.appname) {
        case 'Twitter':
            url = 'http://twitter.com/'
        break;
    }

    const targetDevice = conv.contexts.get('device').parameters;
    await client.api(`/me/devices/${targetDevice.id}/commands`)
        .version('beta')
        .post({
            type: 'LaunchUri',
            payload: {
                uri: url
            }
        });
    conv.close('OK.');
});

const expressApp = express().use(bodyParser.json());
expressApp.post('/', app);
expressApp.listen(port);