From 10a14f39ed3ead07664dcf24edc0b70dc469c717 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Tue, 12 Jul 2022 15:42:20 +0900
Subject: [PATCH] Show an error message on startup when attempting to run on an
 unsupported version of windows

A lot of sentry error reports are coming from realm / EF failures due to the host operating system being too old. Let's give the user some proper feedback rather than a silent crash and error report hitting our logging.
---
 osu.Desktop/Program.cs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/osu.Desktop/Program.cs b/osu.Desktop/Program.cs
index 712f300671..da2a580086 100644
--- a/osu.Desktop/Program.cs
+++ b/osu.Desktop/Program.cs
@@ -14,6 +14,7 @@ using osu.Framework.Platform;
 using osu.Game;
 using osu.Game.IPC;
 using osu.Game.Tournament;
+using SDL2;
 using Squirrel;
 
 namespace osu.Desktop
@@ -29,7 +30,19 @@ namespace osu.Desktop
         {
             // run Squirrel first, as the app may exit after these run
             if (OperatingSystem.IsWindows())
+            {
+                var windowsVersion = Environment.OSVersion.Version;
+
+                if (windowsVersion.Major < 6 || (windowsVersion.Major == 6 && windowsVersion.Minor <= 1))
+                {
+                    SDL.SDL_ShowSimpleMessageBox(SDL.SDL_MessageBoxFlags.SDL_MESSAGEBOX_ERROR,
+                        "Your operating system is too old to run osu!",
+                        "This version of osu! requires at least Windows 8 to run.\nPlease upgrade your operating system or consider using an older version of osu!.", IntPtr.Zero);
+                    return;
+                }
+
                 setupSquirrel();
+            }
 
             // Back up the cwd before DesktopGameHost changes it
             string cwd = Environment.CurrentDirectory;