Reminders.

Wino.Core.Domain/Entities/Calendar/Reminder.cs

@@ -10,6 +10,10 @@ public class Reminder
     public Guid Id { get; set; }
     public Guid CalendarItemId { get; set; }
 
-    public DateTimeOffset ReminderTime { get; set; }
+    /// <summary>
+    /// Duration in seconds before the event start time when the reminder should trigger.
+    /// For example, 900 seconds = 15 minutes before event.
+    /// </summary>
+    public long DurationInSeconds { get; set; }
     public CalendarItemReminderType ReminderType { get; set; }
 }

Wino.Core.Domain/Interfaces/ICalendarService.cs

@@ -47,4 +47,11 @@ public interface ICalendarService
     Task<List<CalendarEventAttendee>> GetAttendeesAsync(Guid calendarEventTrackingId);
     Task<List<CalendarEventAttendee>> ManageEventAttendeesAsync(Guid calendarItemId, List<CalendarEventAttendee> allAttendees);
     Task UpdateCalendarItemAsync(CalendarItem calendarItem, List<CalendarEventAttendee> attendees);
+    Task<List<Reminder>> GetRemindersAsync(Guid calendarItemId);
+    Task SaveRemindersAsync(Guid calendarItemId, List<Reminder> reminders);
+
+    /// <summary>
+    /// Gets predefined reminder options in minutes (1 Hour, 30 Min, 15 Min, 5 Min, 1 Min).
+    /// </summary>
+    int[] GetPredefinedReminderMinutes();
 }

Wino.Core.Domain/Interfaces/IPreferencesService.cs

@@ -216,6 +216,11 @@ public interface IPreferencesService : INotifyPropertyChanged
     DayOfWeek WorkingDayEnd { get; set; }
     double HourHeight { get; set; }
 
+    /// <summary>
+    /// Setting: Default reminder duration in seconds for new calendar events.
+    /// Set to 0 to disable default reminders.
+    /// </summary>
+    long DefaultReminderDurationInSeconds { get; set; }
 
     CalendarSettings GetCurrentCalendarSettings();