New change request abstractions.

Wino.Core/Requests/Mail/DeleteRequest.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using CommunityToolkit.Mvvm.Messaging;
+using Wino.Core.Domain.Entities.Mail;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Interfaces;
+using Wino.Core.Domain.Models.Requests;
+using Wino.Messaging.UI;
+
+namespace Wino.Core.Requests.Mail
+{
+    /// <summary>
+    /// Hard delete request. This request will delete the mail item from the server without moving it to the trash folder.
+    /// </summary>
+    /// <param name="MailItem">Item to delete permanently.</param>
+    public record DeleteRequest(MailCopy MailItem) : MailRequestBase(MailItem),
+        ICustomFolderSynchronizationRequest
+    {
+        public List<Guid> SynchronizationFolderIds => [Item.FolderId];
+
+        public override MailSynchronizerOperation Operation => MailSynchronizerOperation.Delete;
+
+        public override void ApplyUIChanges()
+        {
+            WeakReferenceMessenger.Default.Send(new MailRemovedMessage(Item));
+        }
+
+        public override void RevertUIChanges()
+        {
+            WeakReferenceMessenger.Default.Send(new MailAddedMessage(Item));
+        }
+    }
+
+    public class BatchDeleteRequest : BatchCollection<DeleteRequest>
+    {
+        public BatchDeleteRequest(IEnumerable<DeleteRequest> collection) : base(collection)
+        {
+        }
+    }
+}