Discover Calendar and EventKit

// Create an event store
let store = EKEventStore()

// Create an event
let event = EKEvent(eventStore: store)
event.title = "WWDC23 Keynote"
let startDateComponents = DateComponents(year: 2023, month: 6, day: 5, hour: 10)
let startDate = Calendar.current.date(from: startDateComponents)!
event.startDate = startDate
event.endDate = Calendar.current.date(byAdding: .hour, value: 2, to: startDate)!
event.timeZone = TimeZone(identifier: "America/Los_Angeles")
event.location = "1 Apple Park Way, Cupertino, CA, United States"
event.notes = "Kick off an exhilarating week of technology and community."

// Create a view controller
let eventEditViewController = EKEventEditViewController()
eventEditViewController.event = event
eventEditViewController.eventStore = store
eventEditViewController.editViewDelegate = self

// Present the view controller
present(eventEditViewController, animated: true)

// Create an INReservation
let spokenPhrase = “Lunch at Caffè Macs”
let reservationReference = INSpeakableString(vocabularyIdentifier: "df9bc3f5",
                                             spokenPhrase: spokenPhrase,
                                             pronunciationHint: nil)
let duration = INDateComponentsRange(start: myEventStart, end: myEventEnd)
let location = CLPlacemark(location: myCLLocation,
                           name: "Caffè Macs",
                           postalAddress: myAddress)
let reservation = INRestaurantReservation(itemReference: reservationReference,
                                          reservationStatus: .confirmed,
                                          reservationHolderName: "Jane Appleseed",
                                          reservationDuration: duration,
                                          restaurantLocation: location)

// Create an intent and response
let intent = INGetReservationDetailsIntent(reservationContainerReference:
    reservationReference)
let intentResponse = INGetReservationDetailsIntentResponse(code: .success, userActivity: nil)
intentResponse.reservations = [reservation]

// Create an INInteraction
let interaction = INInteraction(intent: intent, response: intentResponse)

// Donate the interaction to the system
interaction.donate()

// Create an event store
let store = EKEventStore()

// Request write-only access
guard try await store.requestWriteOnlyAccessToEvents() else { return }

// Create an event
let event = EKEvent(eventStore: store)
event.calendar = store.defaultCalendarForNewEvents
event.title = "WWDC23 Keynote"
event.startDate = myEventStartDate
event.endDate = myEventEndDate
event.timeZone = TimeZone(identifier: "America/Los_Angeles")
event.location = "1 Apple Park Way, Cupertino, CA, United States"
event.notes = "Kick off an exhilarating week of technology and community."

// Save the event
guard try eventStore.save(event, span: .thisEvent) else { return }

// Create an event store
let store = EKEventStore()

// Request full access
guard try await store.requestFullAccessToEvents() else { return }

// Create a predicate
guard let interval = Calendar.current.dateInterval(of: .month, for: Date()) else { return }
let predicate = store.predicateForEvents(withStart: interval.start,
                                         end: interval.end,
                                         calendars: nil)

// Fetch the events
let events = store.events(matching: predicate)

let sortedEvents = events.sorted { $0.compareStartDate(with: $1) == .orderedAscending }

// Create the extension target
class VirtualConferenceProvider: EKVirtualConferenceProvider {
  
    // Provide the room types
    override func fetchAvailableRoomTypes() async throws ->
        [EKVirtualConferenceRoomTypeDescriptor] {
        let title = "My Room"
        let identifier = "my_room"
        let roomType = EKVirtualConferenceRoomTypeDescriptor(title: title, identifier: identifier)
        return [roomType]
    }

    // Provide the virtual conference
    override func fetchVirtualConference(identifier: EKVirtualConferenceRoomTypeIdentifier)
        async throws -> EKVirtualConferenceDescriptor {
        let urlDescriptor = EKVirtualConferenceURLDescriptor(title: nil, url: myURL)
        let details = "Enter the meeting code 12345 to enter the meeting."
        return EKVirtualConferenceDescriptor(title: nil,
                                             urlDescriptors: [urlDescriptor],
                                             conferenceDetails: details)
    }
  
}