Property change based updates on the mails for fast bulk operations.

Wino.Core.Domain/Enums/MailCopyChangeFlags.cs

@@ -0,0 +1,57 @@
+using System;
+
+namespace Wino.Core.Domain.Enums;
+
+[Flags]
+public enum MailCopyChangeFlags
+{
+    None = 0,
+    Id = 1 << 0,
+    FolderId = 1 << 1,
+    ThreadId = 1 << 2,
+    MessageId = 1 << 3,
+    References = 1 << 4,
+    InReplyTo = 1 << 5,
+    FromName = 1 << 6,
+    FromAddress = 1 << 7,
+    Subject = 1 << 8,
+    PreviewText = 1 << 9,
+    CreationDate = 1 << 10,
+    Importance = 1 << 11,
+    IsRead = 1 << 12,
+    IsFlagged = 1 << 13,
+    IsFocused = 1 << 14,
+    HasAttachments = 1 << 15,
+    ItemType = 1 << 16,
+    DraftId = 1 << 17,
+    IsDraft = 1 << 18,
+    FileId = 1 << 19,
+    AssignedFolder = 1 << 20,
+    AssignedAccount = 1 << 21,
+    SenderContact = 1 << 22,
+    UniqueId = 1 << 23,
+    All = Id |
+          FolderId |
+          ThreadId |
+          MessageId |
+          References |
+          InReplyTo |
+          FromName |
+          FromAddress |
+          Subject |
+          PreviewText |
+          CreationDate |
+          Importance |
+          IsRead |
+          IsFlagged |
+          IsFocused |
+          HasAttachments |
+          ItemType |
+          DraftId |
+          IsDraft |
+          FileId |
+          AssignedFolder |
+          AssignedAccount |
+          SenderContact |
+          UniqueId
+}

Wino.Core.Domain/Interfaces/IBaseSynchronizer.cs

@@ -1,4 +1,5 @@
-using System;
+using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Wino.Core.Domain.Entities.Shared;
 using Wino.Core.Domain.Enums;
@@ -30,6 +31,11 @@ public interface IBaseSynchronizer
     /// <param name="mailUniqueId">Mail unique id to check.</param>
     bool HasPendingOperation(Guid mailUniqueId);
 
+    /// <summary>
+    /// Returns mail unique ids that currently have queued or executing operations.
+    /// </summary>
+    IReadOnlyCollection<Guid> GetPendingOperationUniqueIds();
+
     /// <summary>
     /// Returns whether there is an in-progress (queued or currently executing) operation for the given calendar item id.
     /// </summary>