MeWeb/src/MeWeb.App/Services/AppSettings.cs

using System.Text.Json;

namespace MeWeb.App.Services;

public class StoredSettings
{
  public string Language { get; set; }

  public bool StorySeen { get; set; }
}

public static class AppSettings
{
  static readonly string Folder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "MeWeb");
  static readonly string FilePath = Path.Combine(Folder, "settings.json");

  public static StoredSettings Read()
  {
    try
    {
      if (!File.Exists(FilePath)) return new StoredSettings();
      using var stream = File.OpenRead(FilePath);
      return JsonSerializer.Deserialize(stream, AppJsonContext.Default.StoredSettings) ?? new StoredSettings();
    }
    catch (Exception ex) when (ex is IOException or JsonException or UnauthorizedAccessException)
    {
      return new StoredSettings();
    }
  }

  public static void Write(StoredSettings settings)
  {
    try
    {
      Directory.CreateDirectory(Folder);
      var temporary = FilePath + ".tmp";
      using (var stream = File.Create(temporary))
        JsonSerializer.Serialize(stream, settings, AppJsonContext.Default.StoredSettings);
      File.Move(temporary, FilePath, overwrite: true);
    }
    catch (Exception ex) when (ex is IOException or UnauthorizedAccessException)
    {
    }
  }
}