Initial commit.

Wino.Core/Misc/RequestComparer.cs

@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+using Wino.Core.Domain.Interfaces;
+using Wino.Core.Requests;
+
+namespace Wino.Core.Misc
+{
+    /// <summary>
+    /// This is incomplete.
+    /// </summary>
+    internal class RequestComparer : IEqualityComparer<IRequestBase>
+    {
+        public bool Equals(IRequestBase x, IRequestBase y)
+        {
+            if (x is MoveRequest sourceMoveRequest && y is MoveRequest targetMoveRequest)
+            {
+                return sourceMoveRequest.FromFolder.Id == targetMoveRequest.FromFolder.Id && sourceMoveRequest.ToFolder.Id == targetMoveRequest.ToFolder.Id;
+            }
+            else if (x is ChangeFlagRequest sourceFlagRequest && y is ChangeFlagRequest targetFlagRequest)
+            {
+                return sourceFlagRequest.IsFlagged == targetFlagRequest.IsFlagged;
+            }
+            else if (x is MarkReadRequest sourceMarkReadRequest && y is MarkReadRequest targetMarkReadRequest)
+            {
+                return sourceMarkReadRequest.Item.IsRead == targetMarkReadRequest.Item.IsRead;
+            }
+            else if (x is DeleteRequest sourceDeleteRequest && y is DeleteRequest targetDeleteRequest)
+            {
+                return sourceDeleteRequest.MailItem.AssignedFolder.Id == targetDeleteRequest.MailItem.AssignedFolder.Id;
+            }
+
+            return true;
+        }
+
+        public int GetHashCode(IRequestBase obj) => obj.Operation.GetHashCode();
+    }
+}