unical_flutter

Device-calendar backend for unical, built on device_calendar_plus. Reads and writes events on the Android Calendar Provider and iOS EventKit — including corporate calendars (Google, Exchange) already synced on the device — with no OAuth and no server.

Device calendars have no tasks and no custom X- properties, so this backend reports Capabilities.deviceCalendar: the engine runs the driftOnly strategy, task percent/tags stay in the caller's store, and the calendar shows a clean event projection. Task methods throw UnsupportedError.

final backend = DeviceCalendarBackend(calendarId: myCalendarId);
await backend.requestPermissions();
final engine = SyncEngine(backend: backend, mappings: driftMappingStore);

Needs READ_CALENDAR + WRITE_CALENDAR on Android and the calendar usage description keys on iOS (see device_calendar_plus).