Fix update/clone project to work cross platform

Author: MattEqualsCoder

MSUScripter/Services/ControlServices/CopyProjectWindowService.cs

@@ -36,6 +36,9 @@ public void SetProject(MsuProject project, bool isCopy)
 
         _model.IsCopy = isCopy;
         _model.ButtonText = isCopy ? "Copy Project" : "Open Project";
+        
+        var title = string.IsNullOrEmpty(project.BasicInfo.PackName) ? "Project" : project.BasicInfo.PackName;
+        _model.Title = isCopy ? $"Copy {title}" : $"Update {title}";
 
         var paths = new List<CopyProjectViewModel>();
 

MSUScripter/ViewModels/CopyProjectWindowViewModel.cs

@@ -20,6 +20,13 @@ public class CopyProjectWindowViewModel : TranslatedViewModelBase
 
     [Reactive] public string ButtonText { get; set; } = "Update Project";
 
+    [Reactive] public string Title { get; set; } = "Update Project";
+
+    public string TopText =>
+        IsCopy
+            ? "Update the paths below as desired for the new project."
+            : "One or more input files are missing. Update them below or continue opening the project.";
+    
     public bool IsCopy { get; set; }
 
     public override ViewModelBase DesignerExample()
@@ -48,9 +55,8 @@ public CopyProjectViewModel(string? path)
         NewPath = path ?? "";
         if (!string.IsNullOrEmpty(PreviousPath))
         {
-            var file = new FileInfo(PreviousPath);
-            BaseFileName = file.Name;
-            Extension = file.Extension;
+            BaseFileName = GetFileNameFromAnyPath(PreviousPath);
+            Extension = Path.GetExtension(PreviousPath);
         }
     }
 
@@ -73,4 +79,21 @@ public override ViewModelBase DesignerExample()
     {
         return this;
     }
+    
+    static string GetFileNameFromAnyPath(string path)
+    {
+        if (string.IsNullOrEmpty(path))
+            return string.Empty;
+
+        // Normalize to system-independent form
+        path = path.Replace('\\', '/');
+
+        // Extract after last '/'
+        int lastSlash = path.LastIndexOf('/');
+        if (lastSlash >= 0 && lastSlash < path.Length - 1)
+            return path.Substring(lastSlash + 1);
+
+        // Fall back to entire string if no slash
+        return path;
+    }
 }

MSUScripter/Views/CopyProjectWindow.axaml

@@ -10,11 +10,11 @@ xmlns:controls="using:AvaloniaControls.Controls"
         Height="768"
         x:Class="MSUScripter.Views.CopyProjectWindow"
         Icon="/Assets/MSUScripterIcon.ico"
-        Title="Clone Project"
+        Title="{Binding Title}"
         x:DataType="viewModels:CopyProjectWindowViewModel">
     <LayoutTransformControl Name="MainLayout">
         <DockPanel>
-
+            <TextBlock DockPanel.Dock="Top" Margin="5" Text="{Binding TopText}" />
 			<controls:HeaderFooter DockPanel.Dock="Bottom">
                 <StackPanel Orientation="Horizontal"  HorizontalAlignment="Center" Margin="5">
                     <Button