Updating aliases during profile sync for Gmail.

Wino.Core.Domain/Extensions/EntityExtensions.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using System.Linq;
+using Wino.Core.Domain.Entities;
+
+namespace Wino.Core.Domain.Extensions
+{
+    public static class EntityExtensions
+    {
+        public static List<MailAccountAlias> GetFinalAliasList(List<MailAccountAlias> localAliases, List<MailAccountAlias> networkAliases)
+        {
+            var finalAliases = new List<MailAccountAlias>();
+
+            var networkAliasDict = networkAliases.ToDictionary(a => a, a => a);
+
+            // Handle updating and retaining existing aliases
+            foreach (var localAlias in localAliases)
+            {
+                if (networkAliasDict.TryGetValue(localAlias, out var networkAlias))
+                {
+                    // If alias exists in both lists, update it with the network alias (preserving Id from local)
+                    networkAlias.Id = localAlias.Id; // Preserve the local Id
+                    finalAliases.Add(networkAlias);
+                    networkAliasDict.Remove(localAlias); // Remove from dictionary to track what's been handled
+                }
+                // If the alias isn't in the network list, it's considered deleted and not added to finalAliases
+            }
+
+            // Add new aliases that were not in the local list
+            finalAliases.AddRange(networkAliasDict.Values);
+
+            return finalAliases;
+        }
+    }
+}