SyncKit

SyncKit allows you to synchronize system events and calendars with your database.

How to implement this package

1. Conform your Event and Calendar class to SKEvent and SKCalendar

class Event: SKEvent {
   
   var title: String
   var eventIdentifier: String
   
   var lastModifiedDate: Date?
   ...
   
    func toEKEvent() -> EKEvent {
        if let event = store.event(withIdentifier: eventIdentifier) {
            event.title = title
            ...
            return event
        } else {
            let event = EKEvent(eventStore: store)
            ...
            return event
        }
    }
    
}

2. Request access to event( You must implement Privacy keys in your info.plist )
3. Compare events and calendars stored in your app with system ones.

let comparison = SKCenter.shared.compareCalendars(calendars: systemCalendars, storedCalendars: storedCalendars)

4. Update your app

db.save(comparison.calendarsToSave)
db.update(comparison.calendarsToUpdate)
db.remove(comparison.calendarsToDelete)