新增私聊相关

Hotfix/Social/Mail/Helper/MailFactory.cs

@@ -0,0 +1,30 @@
+using Fantasy;
+using Fantasy.Entitas;
+using Fantasy.Helper;
+using Fantasy.Serialize;
+using NB.Game;
+
+namespace NB.Chat;
+
+public static class MailFactory
+{
+    private static readonly ISerialize _serializer = SerializerManager.GetSerializer(FantasySerializerType.Bson);
+
+    public static Mail Create(Scene scene,  string content, List<AwardItem> items = null)
+    {
+        var mail = Entity.Create<Mail>(scene, true, true);
+        mail.Content = content;
+        mail.State = MailState.Unread;
+        mail.CreateTime = TimeHelper.Now;
+        
+        if (items != null && items.Count > 0)
+        {
+            foreach (var item in items)
+            {
+                mail.Items.Add(_serializer.Clone(item));
+            }
+        }
+        
+        return mail;
+    }
+}