OF-DL/OF DL.Gui/Views/MainWindow.axaml.cs

using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Platform.Storage;
using OF_DL.Gui.ViewModels;

namespace OF_DL.Gui.Views;

public partial class MainWindow : Window
{
    private bool _hasInitialized;

    public MainWindow()
    {
        InitializeComponent();
        Opened += OnOpened;
    }

    private async void OnOpened(object? sender, EventArgs e)
    {
        if (_hasInitialized)
        {
            return;
        }

        _hasInitialized = true;
        if (DataContext is MainWindowViewModel vm)
        {
            await vm.InitializeAsync();
        }
    }

    private async void OnBrowseFfmpegPathClick(object? sender, RoutedEventArgs e)
    {
        if (DataContext is not MainWindowViewModel vm)
        {
            return;
        }

        TopLevel? topLevel = TopLevel.GetTopLevel(this);
        if (topLevel?.StorageProvider == null)
        {
            return;
        }

        IReadOnlyList<IStorageFile> selectedFiles = await topLevel.StorageProvider.OpenFilePickerAsync(
            new FilePickerOpenOptions
            {
                Title = "Select FFmpeg executable",
                AllowMultiple = false
            });

        IStorageFile? selectedFile = selectedFiles.FirstOrDefault();
        if (selectedFile == null)
        {
            return;
        }

        string? localPath = selectedFile.TryGetLocalPath();
        if (!string.IsNullOrWhiteSpace(localPath))
        {
            vm.SetFfmpegPath(localPath);
            return;
        }

        vm.SetFfmpegPath(selectedFile.Name);
    }

    private async void OnBrowseDownloadPathClick(object? sender, RoutedEventArgs e)
    {
        if (DataContext is not MainWindowViewModel vm)
        {
            return;
        }

        TopLevel? topLevel = TopLevel.GetTopLevel(this);
        if (topLevel?.StorageProvider == null)
        {
            return;
        }

        IReadOnlyList<IStorageFolder> selectedFolders = await topLevel.StorageProvider.OpenFolderPickerAsync(
            new FolderPickerOpenOptions
            {
                Title = "Select download folder",
                AllowMultiple = false
            });

        IStorageFolder? selectedFolder = selectedFolders.FirstOrDefault();
        if (selectedFolder == null)
        {
            return;
        }

        string? localPath = selectedFolder.TryGetLocalPath();
        if (!string.IsNullOrWhiteSpace(localPath))
        {
            vm.SetDownloadPath(localPath);
            return;
        }

        vm.SetDownloadPath(selectedFolder.Name);
    }
}