AppBuilderExtensions.cs

using System;
using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using DesktopNotifications;
using DesktopNotifications.FreeDesktop;
using DesktopNotifications.Windows;

namespace urlhandler;

public static class AppBuilderExtensions {
  public static AppBuilder SetupDesktopNotifications(this AppBuilder builder, out INotificationManager? manager) {
    if (Environment.OSVersion.Platform == PlatformID.Win32NT && Environment.OSVersion.Version.Major >= 10) {
      var context = WindowsApplicationContext.FromCurrentProcess();
      manager = new WindowsNotificationManager(context);
    }
    else if (Environment.OSVersion.Platform == PlatformID.Unix) {
      var context = FreeDesktopApplicationContext.FromCurrentProcess();
      manager = new FreeDesktopNotificationManager(context);
    }
    else {
      // todo: macOS once implemented/stable
      manager = null;
      return builder;
    }

    // todo: any better way of doing this?
    manager.Initialize().GetAwaiter().GetResult();

    var manager_ = manager;
    builder.AfterSetup(b => {
      if (b.Instance?.ApplicationLifetime is IControlledApplicationLifetime lifetime) {
        lifetime.Exit += (s, e) => { manager_.Dispose(); };
      }
    });

    return builder;
  }
}