Separation of messages. Introducing Wino.Messages library.

Wino.Core.Domain/Models/MailItem/ToggleRequestRule.cs

@@ -0,0 +1,14 @@
+using System;
+using Wino.Core.Domain.Enums;
+
+namespace Wino.Core.Domain.Models.MailItem
+{
+    /// <summary>
+    /// Defines a single rule for toggling user actions if needed.
+    /// For example: If user wants to mark a mail as read, but it's already read, then it should be marked as unread.
+    /// </summary>
+    /// <param name="SourceAction"></param>
+    /// <param name="TargetAction"></param>
+    /// <param name="Condition"></param>
+    public record ToggleRequestRule(MailOperation SourceAction, MailOperation TargetAction, Func<IMailItem, bool> Condition);
+}