Add native menu for mac and refactor MainWindow

Source/LibationAvalonia/ViewModels/MainVM.ScanAuto.cs

@@ -0,0 +1,83 @@
+using ApplicationServices;
+using AudibleUtilities;
+using Dinah.Core;
+using LibationFileManager;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace LibationAvalonia.ViewModels
+{
+	partial class MainVM
+	{
+		private readonly InterruptableTimer autoScanTimer = new InterruptableTimer(TimeSpan.FromMinutes(5));
+
+		private void Configure_ScanAuto()
+		{
+			// subscribe as async/non-blocking. I'd actually rather prefer blocking but real-world testing found that caused a deadlock in the AudibleAPI
+			autoScanTimer.Elapsed += async (_, __) =>
+			{
+				using var persister = AudibleApiStorage.GetAccountsSettingsPersister();
+				var accounts = persister.AccountsSettings
+					.GetAll()
+					.Where(a => a.LibraryScan)
+					.ToArray();
+
+				// in autoScan, new books SHALL NOT show dialog
+				try
+				{
+					await LibraryCommands.ImportAccountAsync(LibationAvalonia.Dialogs.Login.AvaloniaLoginChoiceEager.ApiExtendedFunc, accounts);
+				}
+				catch (OperationCanceledException)
+				{
+					Serilog.Log.Information("Audible login attempt cancelled by user");
+				}
+				catch (Exception ex)
+				{
+					Serilog.Log.Logger.Error(ex, "Error invoking auto-scan");
+				}
+			};
+
+			// if enabled: begin on load
+			MainWindow.Loaded += startAutoScan;
+
+			// if new 'default' account is added, run autoscan
+			AccountsSettingsPersister.Saving += accountsPreSave;
+			AccountsSettingsPersister.Saved += accountsPostSave;
+
+			// when autoscan setting is changed, update menu checkbox and run autoscan
+			Configuration.Instance.PropertyChanged += startAutoScan;
+		}
+
+
+		private List<(string AccountId, string LocaleName)> preSaveDefaultAccounts;
+		private List<(string AccountId, string LocaleName)> getDefaultAccounts()
+		{
+			using var persister = AudibleApiStorage.GetAccountsSettingsPersister();
+			return persister.AccountsSettings
+				.GetAll()
+				.Where(a => a.LibraryScan)
+				.Select(a => (a.AccountId, a.Locale.Name))
+				.ToList();
+		}
+
+		private void accountsPreSave(object sender = null, EventArgs e = null)
+			=> preSaveDefaultAccounts = getDefaultAccounts();
+
+		private void accountsPostSave(object sender = null, EventArgs e = null)
+		{
+			if (getDefaultAccounts().Except(preSaveDefaultAccounts).Any())
+				startAutoScan();
+		}
+
+		[PropertyChangeFilter(nameof(Configuration.AutoScan))]
+		private void startAutoScan(object sender = null, EventArgs e = null)
+		{
+			AutoScanChecked = Configuration.Instance.AutoScan;
+			if (AutoScanChecked)
+				autoScanTimer.PerformNow();
+			else
+				autoScanTimer.Stop();
+		}
+	}
+}