Refactor Update Rendering code to stay after updating mods

Commands/UpdateCommand.cs

@@ -38,6 +38,7 @@ public class UpdateCommand(
             if (updateableMods.Count == 0)
             {
                 AnsiConsole.MarkupLine("[green]All FCP mods are up to date![/]");
+                await RenderAppUpdateNoticeAsync(updateCheckTask);
                 return 0;
             }
 
@@ -57,15 +58,7 @@ public class UpdateCommand(
 
             ModTableRenderer.RenderUpdateSummary(results);
 
-            UpdateCheckResult? updateResult = await updateCheckTask;
+            await RenderAppUpdateNoticeAsync(updateCheckTask);
-            if (updateResult != null)
-            {
-                AnsiConsole.WriteLine();
-                var label = updateResult.IsPrerelease ? "Pre-release available" : "Update available";
-                AnsiConsole.MarkupLine(
-                    $"[yellow bold]{label}: v{updateResult.LatestVersion}[/] [grey](current: {updateResult.CurrentVersion})[/]");
-                AnsiConsole.MarkupLine($"[grey]Download: {updateResult.ReleaseUrl}[/]");
-            }
 
             var failCount = results.Count(r => !r.Success);
             return failCount > 0 ? 1 : 0;
@@ -81,4 +74,14 @@ public class UpdateCommand(
             return 1;
         }
     }
+
+    private static async Task RenderAppUpdateNoticeAsync(Task<UpdateCheckResult?> updateCheckTask)
+    {
+        UpdateCheckResult? updateResult = await updateCheckTask;
+        if (updateResult is null)
+            return;
+
+        AnsiConsole.WriteLine();
+        AppUpdateNoticeRenderer.Render(updateResult);
+    }
 }

UI/AppUpdateNoticeRenderer.cs

@@ -0,0 +1,30 @@
+using System.Runtime.InteropServices;
+using FCPModUpdater.Services;
+using Spectre.Console;
+
+namespace FCPModUpdater.UI;
+
+public static class AppUpdateNoticeRenderer
+{
+    public static void Render(UpdateCheckResult updateResult)
+    {
+        var label = updateResult.IsPrerelease ? "Pre-release available" : "Update available";
+
+        AnsiConsole.MarkupLine(
+            $"[yellow bold]{label}: v{updateResult.LatestVersion}[/] [grey](current: {updateResult.CurrentVersion})[/]");
+        AnsiConsole.MarkupLine("[grey]Close this app before updating.[/]");
+        AnsiConsole.MarkupLine($"[grey]Run: {GetUpdateCommand()}[/]");
+        AnsiConsole.MarkupLine($"[grey]Manual download: {updateResult.ReleaseUrl}[/]");
+    }
+
+    private static string GetUpdateCommand()
+    {
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            return @"update-fcp-mod-manager.bat";
+
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+            return "./update-fcp-mod-manager.sh";
+
+        return "download the latest release manually";
+    }
+}

UI/InteractiveMenu.cs

@@ -47,10 +47,7 @@ public class InteractiveMenu
                 var updateResult = await _updateCheckTask;
                 if (updateResult != null)
                 {
-                    var label = updateResult.IsPrerelease ? "Pre-release available" : "Update available";
+                    AppUpdateNoticeRenderer.Render(updateResult);
-                    AnsiConsole.MarkupLine(
-                        $"[yellow bold]{label}: v{updateResult.LatestVersion}[/] [grey](current: {updateResult.CurrentVersion})[/]");
-                    AnsiConsole.MarkupLine($"[grey]Download: {updateResult.ReleaseUrl}[/]");
                 }
             }