From afb4bc67aea08ce971f45c2f5a557e8c4deb7940 Mon Sep 17 00:00:00 2001
From: Oleksii Holub <1935960+Tyrrrz@users.noreply.github.com>
Date: Sun, 20 Feb 2022 22:29:23 +0200
Subject: [PATCH] Auto-detect dark mode preference in GUI

---
 .../Services/SettingsService.cs               | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/DiscordChatExporter.Gui/Services/SettingsService.cs b/DiscordChatExporter.Gui/Services/SettingsService.cs
index 9ee9886..cca7042 100644
--- a/DiscordChatExporter.Gui/Services/SettingsService.cs
+++ b/DiscordChatExporter.Gui/Services/SettingsService.cs
@@ -1,13 +1,14 @@
 using DiscordChatExporter.Core.Exporting;
+using Microsoft.Win32;
 using Tyrrrz.Settings;
 
 namespace DiscordChatExporter.Gui.Services;
 
-public class SettingsService : SettingsManager
+public partial class SettingsService : SettingsManager
 {
     public bool IsAutoUpdateEnabled { get; set; } = true;
 
-    public bool IsDarkModeEnabled { get; set; }
+    public bool IsDarkModeEnabled { get; set; } = IsDarkModeEnabledByDefault();
 
     public bool IsTokenPersisted { get; set; } = true;
 
@@ -35,4 +36,21 @@ public class SettingsService : SettingsManager
     }
 
     public bool ShouldSerializeLastToken() => IsTokenPersisted;
+}
+
+public partial class SettingsService
+{
+    private static bool IsDarkModeEnabledByDefault()
+    {
+        try
+        {
+            return Registry.CurrentUser.OpenSubKey(
+                "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize", false
+            )?.GetValue("AppsUseLightTheme") is 0;
+        }
+        catch
+        {
+            return false;
+        }
+    }
 }
\ No newline at end of file