---

using ImageMagick;
using FFMpegCore;
using Spire.Doc;
using Spire.Presentation;
using System.IO;

namespace UltraConvert
{
    public partial class Form1 : Form
    {
        // Списки расширений из первой версии
        private List<string> imageExt = new List<string> { ".jpg", ".jpeg", ".png", ".bmp", ".webp", ".heic", ".avif" };
        private List<string> docExt = new List<string> { ".docx", ".doc" };
        private List<string> videoExt = new List<string> { ".mp4", ".avi", ".mkv", ".mov" };
        private List<string> presExt = new List<string> { ".pptx" };

        public Form1()
        {
            InitializeComponent();
            SetupTools();
        }

        private void SetupTools()
        {
            string baseDir = AppDomain.CurrentDomain.BaseDirectory;
            MagickNET.SetGhostscriptDirectory(baseDir);
            GlobalFFOptions.Configure(options => options.BinaryFolder = baseDir);
        }

        private void btnSelectFiles_Click(object sender, EventArgs e)
        {
            using (OpenFileDialog ofd = new OpenFileDialog { Multiselect = true })
            {
                if (ofd.ShowDialog() == DialogResult.OK)
                {
                    foreach (string file in ofd.FileNames)
                    {
                        if (!listBoxQueue.Items.Contains(file))
                            listBoxQueue.Items.Add(file);
                    }
                }
            }
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            listBoxQueue.Items.Clear();
            lblStatus.Text = "Очередь очищена";
        }

        private async void btnConvert_Click(object sender, EventArgs e)
        {
            if (listBoxQueue.Items.Count == 0) return;

            string desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            btnConvert.Enabled = false;

            for (int i = 0; i < listBoxQueue.Items.Count; i++)
            {
                string filePath = listBoxQueue.Items[i].ToString()!;
                lblStatus.Text = $"Обработка: {Path.GetFileName(filePath)}";

                try
                {
                    await Task.Run(() => ProcessFile(filePath, desktopPath));
                }
                catch (Exception ex)
                {
                    MessageBox.Show($"Ошибка в {Path.GetFileName(filePath)}: {ex.Message}");
                }
            }

            lblStatus.Text = "Готово! Файлы на рабочем столе.";
            btnConvert.Enabled = true;
        }

        private void ProcessFile(string input, string outputDir)
        {
            string ext = Path.GetExtension(input).ToLower();
            string name = Path.GetFileNameWithoutExtension(input);
            int mode = 0;
            this.Invoke(new Action(() => { mode = comboBoxFormats.SelectedIndex; }));

            if (imageExt.Contains(ext))
            {
                using (var img = new MagickImage(input))
                {
                    img.Write(Path.Combine(outputDir, name + ".jpg"));
                }
            }
            else if (docExt.Contains(ext))
            {
                var doc = new Document();
                doc.LoadFromFile(input);
                doc.SaveToFile(Path.Combine(outputDir, name + ".pdf"), Spire.Doc.FileFormat.PDF);
            }
            else if (videoExt.Contains(ext))
            {
                FFMpeg.ExtractAudio(input, Path.Combine(outputDir, name + ".mp3"));
            }
            else if (presExt.Contains(ext))
            {
                if (mode == 3) // Режим: Извлечь фото из PPTX
                {
                    Presentation ppt = new Presentation();
                    ppt.LoadFromFile(input);
                    for (int i = 0; i < ppt.Images.Count; i++)
                    {
                        File.WriteAllBytes(Path.Combine(outputDir, $"{name}_img_{i}.png"), ppt.Images[i].Data);
                    }
                }
                else // Режим: Презентацию в PDF
                {
                    Presentation ppt = new Presentation();
                    ppt.LoadFromFile(input);
                    ppt.SaveToFile(Path.Combine(outputDir, name + ".pdf"), Spire.Presentation.FileFormat.PDF);
                }
            }
        }
    }
}