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

namespace OF_DL.Gui.Views;

public partial class MainWindow : Window
{
    private bool _hasInitialized;
    public MainWindowViewModel? ViewModel => DataContext as MainWindowViewModel;

    public MainWindow()
    {
        InitializeComponent();
        Icon = new WindowIcon(AssetLoader.Open(new Uri("avares://OF DL.Gui/Assets/icon.ico")));
        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);
    }

    private void OnModalOverlayClicked(object? sender, PointerPressedEventArgs e)
    {
        // Only handle clicks on the overlay itself (the Grid background)
        if (DataContext is not MainWindowViewModel vm)
        {
            return;
        }

        // Execute cancel command on the modal
        vm.CreatorConfigEditor.ModalViewModel?.CancelCommand?.Execute(null);
    }

    private void OnModalContentClicked(object? sender, PointerPressedEventArgs e)
    {
        // Stop the event from bubbling up to the overlay
        e.Handled = true;
    }
}