add settings wrt data path

src/MercuryConverter.csproj

@@ -19,8 +19,10 @@
       <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
       <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageReference Include="Deadpikle.AvaloniaProgressRing" Version="0.10.10" />
     <PackageReference Include="DialogHost.Avalonia" Version="0.9.3" />
+    <PackageReference Include="ini-parser" Version="2.5.2" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>
 

src/Program.cs

@@ -1,11 +1,12 @@
 namespace MercuryConverter;
 
-using Avalonia;
 using System;
 
-using MercuryConverter.UI;
+using Avalonia;
 using Avalonia.Logging;
 
+using MercuryConverter.UI;
+
 class Program
 {
     // Initialization code. Don't use any Avalonia, third-party APIs or any
@@ -14,16 +15,15 @@ class Program
     [STAThread]
     public static void Main(string[] args)
     {
-        // BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+        new Settings();
+
         try
         {
-            // prepare and run your App here
             BuildAvaloniaApp()
                 .StartWithClassicDesktopLifetime(args);
         }
         catch (Exception e)
         {
-            // here we can work with the exception, for example add it to our log file
             Console.WriteLine($"App exception!!\b{e}");
         }
     }

src/Settings.cs

@@ -0,0 +1,94 @@
+using System;
+using System.ComponentModel;
+using System.IO;
+using CommunityToolkit.Mvvm.ComponentModel;
+using IniParser;
+using IniParser.Model;
+
+namespace MercuryConverter;
+
+public enum Theme
+{
+    Light, Dark, System
+}
+
+public partial class Settings : ObservableObject
+{
+    public static Settings? I;
+
+    private string iniPath;
+
+    public string AppDataPath =>
+        Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "muskit", "MercuryConverter");
+
+    [ObservableProperty]
+    private string dataPath = "";
+    [ObservableProperty]
+    private Theme theme = Theme.System;
+
+    protected override void OnPropertyChanged(PropertyChangedEventArgs e)
+    {
+        Console.Write($"Setting {e.PropertyName} changed to ");
+        switch (e.PropertyName)
+        {
+            case nameof(DataPath):
+                Console.WriteLine(DataPath);
+                break;
+            default:
+                Console.WriteLine("unknown variable");
+                break;
+        }
+        SaveToIni();
+
+        base.OnPropertyChanged(e);
+    }
+
+    public Settings()
+    {
+        I = this;
+
+        Console.WriteLine($"Settings path: {AppDataPath}");
+        iniPath = Path.Combine(AppDataPath, "settings.ini");
+
+        // Attempt to read settings; try to create new if unable to
+        try
+        {
+            LoadFromIni();
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine($"Couldn't read {iniPath}!\n{e.Message}");
+            Console.WriteLine("Attempting to create new settings file.");
+            SaveToIni();
+        }
+    }
+
+    private void SaveToIni()
+    {
+        var data = new IniData();
+        data["paths"]["data"] = DataPath;
+        data["ui"]["theme"] = Theme.ToString();
+
+        try
+        {
+            Directory.CreateDirectory(Path.GetDirectoryName(iniPath)!);
+            FileIniDataParser parser = new();
+            parser.WriteFile(iniPath, data);
+            Console.WriteLine($"Settings saved to {iniPath}.");
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine($"Could not save settings to {iniPath}!\n{e.Message}");
+        }
+    }
+
+    private void LoadFromIni()
+    {
+        FileIniDataParser parser = new();
+        var iniData = parser.ReadFile(iniPath);
+
+        DataPath = iniData["paths"]["data"];
+        if (Enum.TryParse(iniData["ui"]["theme"], out Theme loadedTheme))
+            Theme = loadedTheme;
+    }
+}

src/UI/Dialogs/DataScanning.axaml

@@ -37,7 +37,7 @@
                     Margin="0,15,0,0"/>
                 <StackPanel Margin="0 12 0 0" Name="ButtonGroup" Orientation="Horizontal" Grid.Column="1" HorizontalAlignment="Right" IsVisible="false">
                     <Button Name="BtnClose" Margin="6 0 0 0" Content="Close" Click="CloseHandler"/>
-                    <Button Name="BtnSelectFolder" Margin="6 0 0 0" Content="Open Data Folder" Click="OpenDataHandler"/>
+                    <Button Name="BtnSelectFolder" Margin="6 0 0 0" Content="Open Data Folder" Click="OpenFolderHandler"/>
                 </StackPanel>
             </Grid>
         </StackPanel>

src/UI/Dialogs/DataScanning.axaml.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -12,12 +13,12 @@ namespace MercuryConverter.UI.Dialogs;
 
 public partial class DataScanning : UserControl
 {
-    public static DataScanning? Instance { get; private set; }
+    private bool requiresUser;
 
-
+    public DataScanning(bool requiresUser = true)
-    public DataScanning()
     {
-        Instance = this;
+        this.requiresUser = requiresUser;
+        Console.WriteLine($"DataScan should stay open: {requiresUser}");
         InitializeComponent();
 
         if (!Design.IsDesignMode)
@@ -28,34 +29,42 @@ public partial class DataScanning : UserControl
     {
         Task.Run(async () =>
         {
-            var path = ""; // TODO: set to current/saved data path (move to config?)
+            if (Settings.I!.DataPath == "" || requiresUser) // no data path saved
-            var selectedPath = await BeginDirSelection();
+            {
-
+                var selectedPath = await BeginDirSelection(Settings.I!.DataPath);
                 if (selectedPath == "") // cancelled opening folder
                 {
                     // TODO:
                     // return and go to completed mode if scan already completed
                     // continue if no scan has been completed
                     // break if we already have a path but somehow not scanned
+                    Dispatcher.UIThread.Post(() => ScanPath.Text = "");
                     UISetError("No data folder provided.");
                     return;
                 }
-            if (!Directory.Exists(selectedPath))
+                Settings.I.DataPath = selectedPath;
+            }
+
+            Dispatcher.UIThread.Post(() => ScanPath.Text = Settings.I.DataPath);
+            if (!Directory.Exists(Settings.I.DataPath))
             {
                 UISetError("Folder does not exist.");
                 return;
             }
-            if (!(File.Exists(Path.Combine(selectedPath, "MusicParameterTable.uasset")) && File.Exists(Path.Combine(selectedPath, "MusicParameterTable.uexp"))))
+            if (!(File.Exists(Path.Combine(Settings.I.DataPath, "MusicParameterTable.uasset"))
+                && File.Exists(Path.Combine(Settings.I.DataPath, "MusicParameterTable.uexp"))))
             {
                 UISetError("Missing MusicParameterTable asset files.\nPlease ensure you've set up your data folder properly!");
                 return;
             }
 
-            path = selectedPath;
+            UIScanningMode(Settings.I.DataPath);
+            Database.SetupNew(Settings.I.DataPath);
 
-            UIScanningMode(path);
+            if (requiresUser) // TODO: or if there are warnings
-            Database.SetupNew(path);
                 UIScanCompletedMode();
+            else
+                Dispatcher.UIThread.Post(() => MainWindow.Instance!.Dialog.IsOpen = false);
         });
     }
 
@@ -65,7 +74,7 @@ public partial class DataScanning : UserControl
         Dispatcher.UIThread.Post(() =>
         {
             ScanStatus.Text = "select your data folder...";
-            ScanPath.IsVisible = true;
+            ScanPath.IsVisible = false;
             ScanInfo.IsVisible = false;
             ButtonGroup.IsVisible = false;
             ProgressAnimation.IsVisible = true;
@@ -105,6 +114,7 @@ public partial class DataScanning : UserControl
     /// <param name="error"></param>
     private void UISetError(string? error = null)
     {
+        requiresUser = true;
         Dispatcher.UIThread.Post(() =>
         {
             if (error == null)
@@ -115,6 +125,8 @@ public partial class DataScanning : UserControl
 
             ScanError.IsVisible = true;
             ErrorText.Text = error;
+            ScanPath.IsVisible = ScanPath.Text == "" ? false : true;
+            ScanInfo.IsVisible = false;
             ProgressAnimation.IsVisible = false;
             ButtonGroup.IsVisible = true;
             ScanStatus.Text = "an error has occurred";
@@ -159,8 +171,9 @@ public partial class DataScanning : UserControl
         });
     }
 
-    private void OpenDataHandler(object sender, RoutedEventArgs args)
+    private void OpenFolderHandler(object sender, RoutedEventArgs args)
     {
+        requiresUser = true;
         RunFlow();
     }
 }

src/UI/Dialogs/Welcome.axaml.cs

@@ -14,6 +14,6 @@ public partial class Welcome : Window
 
     private void ClickHandler(object sender, RoutedEventArgs args)
     {
-        MainWindow.Instance!.Dialog.DialogContent = new DataScanning().Content;
+        MainWindow.Instance!.Dialog.DialogContent = new DataScanning(true).Content;
     }
 }

src/UI/MainWindow.axaml

@@ -6,6 +6,8 @@
         xmlns:local="clr-namespace:MercuryConverter.UI"
         x:Class="MercuryConverter.UI.MainWindow"
         
+        xmlns:views="clr-namespace:MercuryConverter.UI.Views"
+
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         Title="MercuryConverter"
         Width="1024" Height="800"
@@ -40,7 +42,7 @@
 
                 <TabControl>
                     <TabItem Name="TabSelection" Header="selection">
-                        <UserControl Name="SelectionControl"/>
+                        <views:Selection />
                     </TabItem>
 
                     <TabItem Header="export">

src/UI/MainWindow.axaml.cs

@@ -27,9 +27,6 @@ public partial class MainWindow : Window
             RequestedThemeVariant = ThemeVariant.Dark;
         }
 
-        // Setup tab views
-        SelectionControl.Content = new Selection();
-
         // Show dialog on startup
         Activated += OnActivated;
 
@@ -42,8 +39,12 @@ public partial class MainWindow : Window
         if (initialShown) return;
         initialShown = true;
 
-        Dialog.DialogContent = new Welcome().Content;
+        Dispatcher.UIThread.Post(() =>
+        {
             Dialog.IsOpen = true;
+            Dialog.DialogContent = Settings.I!.DataPath == "" ?
+                new Welcome().Content : new DataScanning(false).Content;
+        });
     }
 
     private void OnDbSelChanged(object? sender, NotifyCollectionChangedEventArgs e)
@@ -57,7 +58,7 @@ public partial class MainWindow : Window
     public void OpenDataHandler()
     {
         Dialog.IsOpen = true;
-        Dialog.DialogContent = new DataScanning().Content;
+        Dialog.DialogContent = new DataScanning(true).Content;
     }
 
     public void OpenDataHOWTO()