From ae25ed327aa4247093253c9ee989369f27e23921 Mon Sep 17 00:00:00 2001
From: Glenn Maynard <glenn@steprevolution.com>
Date: Wed, 18 Sep 2019 21:59:03 -0500
Subject: [PATCH] Fix AreUnifiedThresholdsSynced modifying config.

---
 smx-config/ConfigPresets.cs |  2 +-
 smx-config/Helpers.cs       | 15 +++++++++++++++
 smx-config/SMX.cs           |  2 ++
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/smx-config/ConfigPresets.cs b/smx-config/ConfigPresets.cs
index 9c8808b..cbfeaf1 100644
--- a/smx-config/ConfigPresets.cs
+++ b/smx-config/ConfigPresets.cs
@@ -141,7 +141,7 @@ namespace smx_config
         // have no effect.
         static public bool AreUnifiedThresholdsSynced(SMX.SMXConfig config)
         {
-            SMX.SMXConfig config2 = config;
+            SMX.SMXConfig config2 = Helpers.DeepClone(config);
             SyncUnifiedThresholds(ref config2);
             return SamePreset(config, config2);
         }
diff --git a/smx-config/Helpers.cs b/smx-config/Helpers.cs
index 765260a..a50404f 100644
--- a/smx-config/Helpers.cs
+++ b/smx-config/Helpers.cs
@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
+using System.Runtime.Serialization.Formatters.Binary;
 using System.Windows;
 using System.Windows.Media;
 using System.Windows.Resources;
@@ -107,6 +109,19 @@ namespace smx_config
             return new System.ComponentModel.Win32Exception(error).Message;
         }
 
+        // https://stackoverflow.com/a/129395/136829
+        public static T DeepClone<T>(T obj)
+        {
+            using (var ms = new MemoryStream())
+            {
+                var formatter = new BinaryFormatter();
+                formatter.Serialize(ms, obj);
+                ms.Position = 0;
+
+                return (T) formatter.Deserialize(ms);
+            }
+        }
+
         // Work around Enumerable.SequenceEqual not checking if the arrays are null.
         public static bool SequenceEqual<TSource>(this IEnumerable<TSource> first, IEnumerable<TSource> second)
         {
diff --git a/smx-config/SMX.cs b/smx-config/SMX.cs
index 58ff795..a48e2bf 100644
--- a/smx-config/SMX.cs
+++ b/smx-config/SMX.cs
@@ -27,6 +27,7 @@ namespace SMX
         PlatformFlags_FSR = 1 << 1,
     };
 
+    [Serializable]
     public struct PackedSensorSettings {
         // Load cell thresholds:
         public Byte loadCellLowThreshold;
@@ -47,6 +48,7 @@ namespace SMX
     };
 
     [StructLayout(LayoutKind.Sequential, Pack=1)]  
+    [Serializable]
     public struct SMXConfig {  
         public Byte masterVersion;
         public Byte configVersion;