Libation/Source/LibationAvalonia/ViewModels/MainVM.Liberate.cs

using ApplicationServices;
using Avalonia.Threading;
using DataLayer;
using LibationFileManager;
using LibationUiBase.Forms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace LibationAvalonia.ViewModels;

partial class MainVM
{
	public void Configure_Liberate() { }

	/// <summary> This gets called by the "Begin Book and PDF Backups" menu item. </summary>
	public async Task BackupAllBooks()
	{
		var books = await Task.Run(DbContexts.GetUnliberated_Flat_NoTracking);
		BackupAllBooks(books);
	}

	private void BackupAllBooks(IEnumerable<LibraryBook> books)
	{
		try
		{
			var unliberated = books.UnLiberated().ToArray();

			Dispatcher.UIThread.Invoke(() =>
			{
				if (ProcessQueue.QueueDownloadDecrypt(unliberated))
					setQueueCollapseState(false);
			});
		}
		catch (Exception ex)
		{
			Serilog.Log.Logger.Error(ex, "An error occurred while backing up all library books");
		}
	}

	/// <summary> This gets called by the "Begin PDF Only Backups" menu item. </summary>
	public async Task BackupAllPdfs()
	{
		var books = await Task.Run(() => DbContexts.GetLibrary_Flat_NoTracking());
		if (ProcessQueue.QueueDownloadPdf(books))
			setQueueCollapseState(false);
	}

	public async Task ConvertAllToMp3Async()
	{
		var result = await MessageBox.Show(MainWindow,
			"This converts all m4b titles in your library to mp3 files. Original files are not deleted."
			+ "\r\nFor large libraries this will take a long time and will take up more disk space."
			+ "\r\n\r\nContinue?"
			+ "\r\n\r\n(To always download titles as mp3 instead of m4b, go to Settings: Download my books as .MP3 files)",
			"Convert all M4b => Mp3?",
			MessageBoxButtons.YesNo,
			MessageBoxIcon.Warning);
		if (result == DialogResult.Yes && ProcessQueue.QueueConvertToMp3(await Task.Run(() => DbContexts.GetLibrary_Flat_NoTracking())))
			setQueueCollapseState(false);
	}

	private void setQueueCollapseState(bool collapsed)
	{
		QueueOpen = !collapsed;
		Configuration.Instance.SetNonString(!collapsed, nameof(QueueOpen));
	}
}