events.ts

interface GoogleCalendarEvent {
  id: string;
  summary: string;
  description: string;
}

async pollCalendarEvents() {
  // Define a range of twice the polling interval (in case of polling delays)
  const timeNow = new Date();
  const timeMin = new Date(timeNow.getTime() - this.POLLING_INTERVAL * 2);

  try {
    // Request all events in the selected calendar in the selected range
    const response = await this.calendar.events.list({
      calendarId: process.env.EVENT_CALENDAR_ID,
      singleEvents: true, // Flatten any recurring events
      timeMin: timeMin.toISOString(),
      timeMax: timeNow.toISOString()
    });

    const events = response.data.items as GoogleCalendarEvent[];

    // Process events one by one (sequentially)
    for (const event of events) {
      await this.processEvent(event);
    }
  } catch (err) {
    // log error
  }

  // Keep the interval job running
  return false;
}