Creating events.

Wino.Core/Requests/Calendar/CreateCalendarEventRequest.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using CommunityToolkit.Mvvm.Messaging;
+using Wino.Core.Domain.Entities.Calendar;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Models.Requests;
+using Wino.Messaging.Client.Calendar;
+
+namespace Wino.Core.Requests.Calendar;
+
+/// <summary>
+/// Request to create a new calendar event on the server.
+/// The calendar item should be already saved to the local database before queuing this request.
+/// </summary>
+public record CreateCalendarEventRequest(CalendarItem Item, List<CalendarEventAttendee> Attendees) : CalendarRequestBase(Item)
+{
+    public override CalendarSynchronizerOperation Operation => CalendarSynchronizerOperation.CreateEvent;
+
+    /// <summary>
+    /// After successful creation, we need to resync to get the remote event ID.
+    /// </summary>
+    public override int ResynchronizationDelay => 2000;
+
+    public override void ApplyUIChanges()
+    {
+        // Notify UI that the event was created locally
+        WeakReferenceMessenger.Default.Send(new CalendarItemAdded(Item));
+    }
+
+    public override void RevertUIChanges()
+    {
+        // If creation fails, we should notify the UI to remove it
+        WeakReferenceMessenger.Default.Send(new CalendarItemDeleted(Item));
+    }
+}