I assume that before you are using my code you have created needed INTENT with proper name of it (MakeAppointment).

Appointment Scheduler

Setup Instructions

Dialogflow and Fulfillment Setup

Service Account Setup

1. In Dialogflow's console, go to settings ⚙ and under the general tab, you'll see the project ID section with a Google Cloud link to open the Google Cloud console. Open Google Cloud.
2. In the Cloud console, go to the menu icon ☰ > APIs & Services > Library
3. Select Google Calendar API and then Enable to enable the API on your cloud project.
4. Under the menu icon ☰ > APIs & Services > Credentials > Create Credentials > Service Account Key.
5. Under Create service account key, select New Service Account from the dropdown and enter AppointmentCalendar for the name and click Create. In the popup, select Create Without Role.
   • JSON file will be downloaded to your computer that you will need in the setup sections below.

DMV Appointment Calendar Setup

1. Open the JSON file that was downloaded in the Service Account Setup section and copy the email address from "client_email": "[email protected]",
2. Open Google Calendar. On the left, next to Add a friend's calendar click the + and select New Calendar
3. Enter Appointment Calendar for the name of the calendar and select Create Calendar. Next, go to the Appointment Calendar calendar that will appear on the left column.
4. Paste the email copied from the previous step into the Add people field of the Share with specific people section and then select Make changes to events in the permissions dropdown and select Send.
5. While still in Settings, scroll down and copy the Calendar ID in the Integrate Calendar section.

Add Service Account and Calendar ID to Fulfillment

Go to the index.js file in Dialogflow's Fulfillment section

Take the Calendar ID copied from the prior section and replace <Add your calendar ID here> on line 30 of index.js.

// Ex:
const calendarId = '[email protected]';

Next copy the all contents of the JSON file downloaded in the Service Account Setup section and replace with it on line 30 of index.js const serviceAccount = . Starts with {"type": "service_account",... and Ends With "client_x509_cert_url": "Your Project Google API URL "}; It will look like given example below.

//Ex: 
 const serviceAccount = {"type": "service_account",
  "project_id": "<Your-project_id>",
  "private_key_id": "<Your-private_key_id>",
  "private_key": "<Your-private_key> As like this -----BEGIN PRIVATE KEY-----\nViral...Kirankumar...Vyas==\n-----END PRIVATE KEY-----\n",
  "client_email": "<Your Service Account ID> As like this [email protected]",
  "client_id": "<Your Client ID>",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://oauth2.googleapis.com/token",
  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  "client_x509_cert_url": "Your Project Google API URL"};

Time Zone Setting

1. Make sure that const timeZone = 'Your time zone e.g America/Los_Angeles or Asia/Colombo', Some time zone are named diffrent or merged https://cloud.google.com/dataprep/docs/html/Supported-Time-Zone-Values_66194188 and https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
2. Also make sure that const timeZoneOffset = 'Your time + /- to gmt 000 e.g -07:00 or +5:30';

Click Deploy at at the bottom of the page.

Running the sample

In Dialogflow's console, in the simulator on the right, query your Dialogflow agent with Set an appointment at 4pm tomorrow for drivers license and respond to the questions your Dialogflow agent asks. After getting the required information, an appointment will be added to the "Appointment Calendar" calendar.

How to make contributions?

Please read and follow the steps in the CONTRIBUTING.md.

License

See LICENSE.

Disclaimer

This code is a sample, should not be used for any potential production workloads.

Terms

Your use of this sample is subject to, and by using or downloading the sample files you agree to comply with, the Google APIs Terms of Service.