Initial commit: Futonizer MKV track stripper

Services/SettingsService.cs

@@ -0,0 +1,48 @@
+using System.IO;
+using System.Text.Json;
+using Futonizer.Models;
+
+namespace Futonizer.Services;
+
+/// <summary>
+/// Loads and saves <see cref="AppSettings"/> as a JSON file stored next to
+/// the application executable, so it travels with the app folder.
+/// </summary>
+public static class SettingsService
+{
+    private static readonly string SettingsFilePath = Path.Combine(AppContext.BaseDirectory, "settings.json");
+    private static readonly JsonSerializerOptions Options = new() { WriteIndented = true };
+
+    public static AppSettings Load()
+    {
+        try
+        {
+            if (File.Exists(SettingsFilePath))
+            {
+                string json = File.ReadAllText(SettingsFilePath);
+                var settings = JsonSerializer.Deserialize<AppSettings>(json, Options);
+                if (settings is not null)
+                    return settings;
+            }
+        }
+        catch
+        {
+            // Corrupt or unreadable settings file - fall back to defaults.
+        }
+
+        return new AppSettings();
+    }
+
+    public static void Save(AppSettings settings)
+    {
+        try
+        {
+            string json = JsonSerializer.Serialize(settings, Options);
+            File.WriteAllText(SettingsFilePath, json);
+        }
+        catch
+        {
+            // Best effort - ignore write failures (e.g. read-only install folder).
+        }
+    }
+}