Build a WhatsApp Events Reminder App

This tutorial guides users in setting up an Events Reminder WhatsApp conversation that sends daily reminders of today's events and queries future events using the Vonage Messages API Sandbox integrated with Firebase Firestore and Cloud Functions for Firestore. The user sets up a WhatsApp sandbox, installs necessary dependencies, creates environment variables, and configures the application to receive inbound messages from WhatsApp. It also generates localtunnel.me URLs, retrieves events from a database, schedules daily messages containing today's events, and adds tailored messages using OpenAI. The application is run by executing the JavaScript file on port 8000, which checks for today's events and sends a message via WhatsApp at a specified time each day.