using System.Windows;
using System.Windows.Controls;
using System.Windows.Forms;
using System.Windows.Media;
using System.IO;
using System.Windows.Input;
using TaskbarLauncher.Models;
using TaskbarLauncher.Services;
using MessageBox = System.Windows.MessageBox;
using TreeView = System.Windows.Controls.TreeView;
using TreeViewItem = System.Windows.Controls.TreeViewItem;

namespace TaskbarLauncher;

public partial class MainWindow : Window
{
    private readonly LauncherController? controller;
    private LauncherItem? selectedItem;
    private bool isLoadingSelection;
    private bool isLoadingStartupState;
    private List<int>? selectedPath;
    private string? loadedAutoIconPath;
    private System.Windows.Point dragStartPoint;

    public MainWindow()
    {
        InitializeComponent();
    }

    public MainWindow(LauncherController controller)
    {
        InitializeComponent();
        this.controller = controller;
        DisplayModeBox.ItemsSource = Enum.GetValues<LauncherDisplayMode>();
        ItemDisplayModeBox.ItemsSource = Enum.GetValues<LauncherDisplayMode>();
        TypeBox.ItemsSource = Enum.GetValues<LauncherItemType>();
        VersionText.Text = $"Version {AppInfo.Version}  Build {AppInfo.Build}";
        RefreshView();
    }

    private void RefreshView(LauncherItem? itemToSelect = null)
    {
        if (controller is null)
        {
            return;
        }

        ItemsTree.Items.Clear();
        foreach (LauncherItem item in controller.Config.Items)
        {
            ItemsTree.Items.Add(CreateTreeItem(item));
        }

        HotkeyBox.Text = controller.Config.Hotkey;
        DisplayModeBox.SelectedItem = controller.Config.DisplayMode;
        LoadStartupState();
        StatusText.Text = "Config file: config.json beside TaskbarLauncher.exe";
        if (itemToSelect is not null && SelectTreeItem(itemToSelect))
        {
            selectedItem = itemToSelect;
            selectedPath = FindItemPath(itemToSelect);
            LoadItemFields(itemToSelect);
        }
        else
        {
            ClearItemFields();
        }
    }

    private static TreeViewItem CreateTreeItem(LauncherItem item)
    {
        var treeItem = new TreeViewItem { Header = $"{item.Title} ({item.Type})", Tag = item };
        foreach (LauncherItem child in item.Children)
        {
            treeItem.Items.Add(CreateTreeItem(child));
        }

        return treeItem;
    }

    private bool SelectTreeItem(LauncherItem item)
    {
        foreach (object root in ItemsTree.Items)
        {
            if (root is TreeViewItem treeItem && SelectTreeItem(treeItem, item))
            {
                return true;
            }
        }

        return false;
    }

    private static bool SelectTreeItem(TreeViewItem treeItem, LauncherItem item)
    {
        if (ReferenceEquals(treeItem.Tag, item))
        {
            treeItem.IsSelected = true;
            treeItem.BringIntoView();
            return true;
        }

        foreach (object child in treeItem.Items)
        {
            if (child is TreeViewItem childTreeItem && SelectTreeItem(childTreeItem, item))
            {
                treeItem.IsExpanded = true;
                return true;
            }
        }

        return false;
    }

    private void ItemsTree_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
    {
        if (e.NewValue is not TreeViewItem treeItem || treeItem.Tag is not LauncherItem item)
        {
            selectedItem = null;
            ClearItemFields();
            return;
        }

        selectedItem = item;
        selectedPath = FindItemPath(item);
        LoadItemFields(item);
    }

    private void ItemsTree_PreviewMouseMove(object sender, System.Windows.Input.MouseEventArgs e)
    {
        if (e.LeftButton != MouseButtonState.Pressed)
        {
            dragStartPoint = e.GetPosition(ItemsTree);
            return;
        }

        System.Windows.Point currentPosition = e.GetPosition(ItemsTree);
        if (Math.Abs(currentPosition.X - dragStartPoint.X) < SystemParameters.MinimumHorizontalDragDistance &&
            Math.Abs(currentPosition.Y - dragStartPoint.Y) < SystemParameters.MinimumVerticalDragDistance)
        {
            return;
        }

        if (ItemsTree.SelectedItem is TreeViewItem { Tag: LauncherItem item })
        {
            DragDrop.DoDragDrop(ItemsTree, item, System.Windows.DragDropEffects.Move);
        }
    }

    private void ItemsTree_DragOver(object sender, System.Windows.DragEventArgs e)
    {
        e.Effects = CanDrop(e) ? System.Windows.DragDropEffects.Move : System.Windows.DragDropEffects.None;
        e.Handled = true;
    }

    private void ItemsTree_Drop(object sender, System.Windows.DragEventArgs e)
    {
        if (controller is null ||
            !e.Data.GetDataPresent(typeof(LauncherItem)) ||
            e.Data.GetData(typeof(LauncherItem)) is not LauncherItem draggedItem)
        {
            return;
        }

        TreeViewItem? targetTreeItem = FindAncestor<TreeViewItem>(e.OriginalSource as DependencyObject);
        LauncherItem? targetItem = targetTreeItem?.Tag as LauncherItem;
        if (targetItem is not null && (ReferenceEquals(draggedItem, targetItem) || ContainsItem(draggedItem, targetItem)))
        {
            return;
        }

        ApplyCurrentItem();
        List<LauncherItem>? sourceSiblings = FindSiblings(controller.Config.Items, draggedItem);
        if (sourceSiblings is null)
        {
            return;
        }

        sourceSiblings.Remove(draggedItem);

        if (targetItem is null)
        {
            controller.Config.Items.Add(draggedItem);
        }
        else if (targetItem.Type == LauncherItemType.Menu)
        {
            targetItem.Children.Add(draggedItem);
        }
        else
        {
            List<LauncherItem>? targetSiblings = FindSiblings(controller.Config.Items, targetItem);
            if (targetSiblings is null)
            {
                controller.Config.Items.Add(draggedItem);
            }
            else
            {
                int targetIndex = targetSiblings.IndexOf(targetItem);
                targetSiblings.Insert(targetIndex + 1, draggedItem);
            }
        }

        selectedPath = FindItemPath(draggedItem);
        RefreshView(draggedItem);
        StatusText.Text = $"Moved {draggedItem.Title}. Click Save to keep the new order.";
        e.Handled = true;
    }

    private bool CanDrop(System.Windows.DragEventArgs e)
    {
        if (!e.Data.GetDataPresent(typeof(LauncherItem)) ||
            e.Data.GetData(typeof(LauncherItem)) is not LauncherItem draggedItem)
        {
            return false;
        }

        TreeViewItem? targetTreeItem = FindAncestor<TreeViewItem>(e.OriginalSource as DependencyObject);
        LauncherItem? targetItem = targetTreeItem?.Tag as LauncherItem;
        return targetItem is null || (!ReferenceEquals(draggedItem, targetItem) && !ContainsItem(draggedItem, targetItem));
    }

    private static bool ContainsItem(LauncherItem parent, LauncherItem possibleChild)
    {
        foreach (LauncherItem child in parent.Children)
        {
            if (ReferenceEquals(child, possibleChild) || ContainsItem(child, possibleChild))
            {
                return true;
            }
        }

        return false;
    }

    private static T? FindAncestor<T>(DependencyObject? current)
        where T : DependencyObject
    {
        while (current is not null)
        {
            if (current is T match)
            {
                return match;
            }

            current = VisualTreeHelper.GetParent(current);
        }

        return null;
    }

    private void LoadItemFields(LauncherItem item)
    {
        isLoadingSelection = true;
        TitleBox.Text = item.Title;
        TypeBox.SelectedItem = item.Type;
        TargetBox.Text = item.Target;
        ArgumentsBox.Text = item.Arguments ?? "";
        IconPathBox.Text = item.IconPath ?? "";
        loadedAutoIconPath = GetAutomaticIconPath(item);
        ItemDisplayModeBox.SelectedItem = item.DisplayMode;
        UpdateTargetAvailability();
        isLoadingSelection = false;
        UpdatePreview();
    }

    private void ClearItemFields()
    {
        selectedItem = null;
        selectedPath = null;
        isLoadingSelection = true;
        TitleBox.Text = "";
        TypeBox.SelectedIndex = -1;
        TargetBox.Text = "";
        ArgumentsBox.Text = "";
        IconPathBox.Text = "";
        loadedAutoIconPath = null;
        ItemDisplayModeBox.SelectedItem = controller?.Config.DisplayMode;
        UpdateTargetAvailability();
        isLoadingSelection = false;
        UpdatePreview();
    }

    private void ApplyCurrentItem()
    {
        if (controller is null || selectedItem is null)
        {
            return;
        }

        selectedItem.Title = string.IsNullOrWhiteSpace(TitleBox.Text) ? "Untitled" : TitleBox.Text.Trim();
        selectedItem.Type = TypeBox.SelectedItem is LauncherItemType type ? type : LauncherItemType.App;
        selectedItem.Target = selectedItem.Type == LauncherItemType.Menu ? "" : TargetBox.Text.Trim();
        selectedItem.Arguments = selectedItem.Type == LauncherItemType.Menu || string.IsNullOrWhiteSpace(ArgumentsBox.Text)
            ? null
            : ArgumentsBox.Text.Trim();
        EnsureAutomaticIconPath();
        selectedItem.IconPath = string.IsNullOrWhiteSpace(IconPathBox.Text) ? null : IconPathBox.Text.Trim();
        selectedItem.DisplayMode = ItemDisplayModeBox.SelectedItem is LauncherDisplayMode itemMode
            ? itemMode
            : controller?.Config.DisplayMode ?? LauncherDisplayMode.LargeIconWithText;

        if (selectedItem.Type != LauncherItemType.Menu)
        {
            selectedItem.Children.Clear();
        }
    }

    private void ApplyConfigFields()
    {
        if (controller is null)
        {
            return;
        }

        controller.Config.Hotkey = string.IsNullOrWhiteSpace(HotkeyBox.Text) ? "Ctrl+Alt+Space" : HotkeyBox.Text.Trim();
        controller.Config.DisplayMode = DisplayModeBox.SelectedItem is LauncherDisplayMode mode
            ? mode
            : LauncherDisplayMode.LargeIconWithText;
        ApplyCurrentItem();
    }

    private void LoadStartupState()
    {
        isLoadingStartupState = true;
        StartWithWindowsBox.IsChecked = StartupService.IsEnabled();
        isLoadingStartupState = false;
    }

    private void StartWithWindowsBox_Changed(object sender, RoutedEventArgs e)
    {
        if (isLoadingStartupState)
        {
            return;
        }

        try
        {
            bool enabled = StartWithWindowsBox.IsChecked == true;
            StartupService.SetEnabled(enabled);
            StatusText.Text = enabled
                ? $"Startup enabled: {StartupService.ShortcutPath}"
                : "Startup disabled.";
        }
        catch (Exception ex)
        {
            MessageBox.Show($"Could not update startup setting.\n\n{ex.Message}", "Taskbar Launcher");
            LoadStartupState();
        }
    }

    private void AddRoot_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null)
        {
            return;
        }

        ApplyCurrentItem();
        LauncherItem item = CreateNewItem(controller.Config.DisplayMode);
        controller.Config.Items.Add(item);
        selectedPath = [controller.Config.Items.Count - 1];
        RefreshView(item);
    }

    private void AddTopMenu_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null)
        {
            return;
        }

        ApplyCurrentItem();
        LauncherItem menu = CreateNewMenu(controller.Config.DisplayMode);
        controller.Config.Items.Add(menu);
        selectedPath = [controller.Config.Items.Count - 1];
        RefreshView(menu);
        StatusText.Text = "Added top-level menu. Rename it, then Save.";
    }

    private void AddChild_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null || selectedItem is null)
        {
            MessageBox.Show("Select a menu item first, then add a child item.", "Taskbar Launcher");
            return;
        }

        LauncherItem parent = selectedItem;
        ApplyCurrentItem();
        if (parent.Type != LauncherItemType.Menu)
        {
            MessageBox.Show("Child items can only be added under a Menu item.", "Taskbar Launcher");
            return;
        }

        LauncherItem child = CreateNewItem(controller.Config.DisplayMode);
        parent.Children.Add(child);
        selectedPath = FindItemPath(child);
        RefreshView(child);
    }

    private void AddSubmenu_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null || selectedItem is null)
        {
            MessageBox.Show("Select a menu first, then add a submenu.", "Taskbar Launcher");
            return;
        }

        LauncherItem parent = selectedItem;
        ApplyCurrentItem();
        if (parent.Type != LauncherItemType.Menu)
        {
            MessageBox.Show("Submenus can only be added under a Menu item.", "Taskbar Launcher");
            return;
        }

        LauncherItem submenu = CreateNewMenu(controller.Config.DisplayMode);
        parent.Children.Add(submenu);
        selectedPath = FindItemPath(submenu);
        RefreshView(submenu);
        StatusText.Text = "Added submenu. Rename it, then Save.";
    }

    private static LauncherItem CreateNewItem(LauncherDisplayMode displayMode)
    {
        return new LauncherItem
        {
            Title = "New Item",
            Type = LauncherItemType.App,
            Target = "",
            DisplayMode = displayMode
        };
    }

    private static LauncherItem CreateNewMenu(LauncherDisplayMode displayMode)
    {
        return new LauncherItem
        {
            Title = "New Menu",
            Type = LauncherItemType.Menu,
            Target = "",
            DisplayMode = displayMode
        };
    }

    private void Delete_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null || selectedItem is null)
        {
            return;
        }

        LauncherItem deletedItem = selectedItem;
        RemoveItem(controller.Config.Items, selectedItem);
        RefreshView();
        StatusText.Text = $"Deleted: {deletedItem.Title}";
    }

    private void MoveUp_Click(object sender, RoutedEventArgs e)
    {
        MoveSelected(-1);
    }

    private void MoveDown_Click(object sender, RoutedEventArgs e)
    {
        MoveSelected(1);
    }

    private void PromoteToTop_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null || selectedItem is null)
        {
            return;
        }

        ApplyCurrentItem();
        if (controller.Config.Items.Contains(selectedItem))
        {
            StatusText.Text = $"{selectedItem.Title} is already a top-level item.";
            return;
        }

        LauncherItem itemToPromote = selectedItem;
        if (!RemoveItem(controller.Config.Items, itemToPromote))
        {
            return;
        }

        controller.Config.Items.Add(itemToPromote);
        selectedPath = [controller.Config.Items.Count - 1];
        RefreshView(itemToPromote);
        StatusText.Text = $"Promoted {itemToPromote.Title} to top level. Click Save to keep it.";
    }

    private void MoveSelected(int direction)
    {
        if (controller is null || selectedItem is null)
        {
            return;
        }

        ApplyCurrentItem();
        List<LauncherItem>? siblings = FindSiblings(controller.Config.Items, selectedItem);
        if (siblings is null)
        {
            return;
        }

        int index = siblings.IndexOf(selectedItem);
        int newIndex = index + direction;
        if (index < 0 || newIndex < 0 || newIndex >= siblings.Count)
        {
            return;
        }

        siblings.RemoveAt(index);
        siblings.Insert(newIndex, selectedItem);
        RefreshView(selectedItem);
    }

    private static bool RemoveItem(List<LauncherItem> items, LauncherItem item)
    {
        if (items.Remove(item))
        {
            return true;
        }

        foreach (LauncherItem child in items)
        {
            if (RemoveItem(child.Children, item))
            {
                return true;
            }
        }

        return false;
    }

    private static List<LauncherItem>? FindSiblings(List<LauncherItem> items, LauncherItem item)
    {
        if (items.Contains(item))
        {
            return items;
        }

        foreach (LauncherItem child in items)
        {
            List<LauncherItem>? found = FindSiblings(child.Children, item);
            if (found is not null)
            {
                return found;
            }
        }

        return null;
    }

    private void ApplyItem_Click(object sender, RoutedEventArgs e)
    {
        ApplyCurrentItem();
        RefreshView(selectedItem);
    }

    private void Save_Click(object sender, RoutedEventArgs e)
    {
        if (controller is null)
        {
            return;
        }

        ApplyConfigFields();
        ConfigService.Save(controller.Config);
        controller.ReloadConfig();
        LauncherItem? reloadedSelection = selectedPath is null ? null : FindItemByPath(controller.Config.Items, selectedPath);
        RefreshView(reloadedSelection);
        StatusText.Text = reloadedSelection is null
            ? $"Saved: {ConfigService.ConfigPath}"
            : $"Saved {reloadedSelection.Title} ({reloadedSelection.Type}) to {ConfigService.ConfigPath}";
    }

    private void BackupConfig_Click(object sender, RoutedEventArgs e)
    {
        try
        {
            if (controller is not null)
            {
                ApplyConfigFields();
                ConfigService.Save(controller.Config);
            }

            string backupPath = ConfigService.Backup();
            StatusText.Text = $"Backed up config to {backupPath}";
        }
        catch (Exception ex)
        {
            MessageBox.Show($"Could not back up config.\n\n{ex.Message}", "Taskbar Launcher");
        }
    }

    private void RestoreConfig_Click(object sender, RoutedEventArgs e)
    {
        using OpenFileDialog dialog = new()
        {
            Title = "Choose a config backup to restore",
            Filter = "JSON config files|*.json|All files|*.*",
            InitialDirectory = Directory.Exists(ConfigService.BackupFolder) ? ConfigService.BackupFolder : ConfigService.AppFolder
        };

        if (dialog.ShowDialog() != System.Windows.Forms.DialogResult.OK)
        {
            return;
        }

        MessageBoxResult result = MessageBox.Show(
            "Restore this config file and replace the current launcher config?",
            "Taskbar Launcher",
            MessageBoxButton.YesNo,
            MessageBoxImage.Question);

        if (result != MessageBoxResult.Yes)
        {
            return;
        }

        try
        {
            ConfigService.Restore(dialog.FileName);
            controller?.ReloadConfig();
            RefreshView();
            StatusText.Text = $"Restored config from {dialog.FileName}";
        }
        catch (Exception ex)
        {
            MessageBox.Show($"Could not restore config.\n\n{ex.Message}", "Taskbar Launcher");
        }
    }

    private List<int>? FindItemPath(LauncherItem item)
    {
        if (controller is null)
        {
            return null;
        }

        List<int> path = [];
        return FindItemPath(controller.Config.Items, item, path) ? path : null;
    }

    private static bool FindItemPath(List<LauncherItem> items, LauncherItem item, List<int> path)
    {
        for (int index = 0; index < items.Count; index++)
        {
            path.Add(index);
            if (ReferenceEquals(items[index], item) || FindItemPath(items[index].Children, item, path))
            {
                return true;
            }

            path.RemoveAt(path.Count - 1);
        }

        return false;
    }

    private static LauncherItem? FindItemByPath(List<LauncherItem> items, List<int> path)
    {
        List<LauncherItem> currentItems = items;
        LauncherItem? currentItem = null;

        foreach (int index in path)
        {
            if (index < 0 || index >= currentItems.Count)
            {
                return null;
            }

            currentItem = currentItems[index];
            currentItems = currentItem.Children;
        }

        return currentItem;
    }

    private void ReloadConfig_Click(object sender, RoutedEventArgs e)
    {
        controller?.ReloadConfig();
        RefreshView();
    }

    private void OpenConfigFolder_Click(object sender, RoutedEventArgs e)
    {
        ConfigService.OpenConfigFolder();
    }

    private void About_Click(object sender, RoutedEventArgs e)
    {
        AboutWindow aboutWindow = new()
        {
            Owner = this
        };

        aboutWindow.ShowDialog();
    }

    private void Close_Click(object sender, RoutedEventArgs e)
    {
        Hide();
    }

    private void BrowseFile_Click(object sender, RoutedEventArgs e)
    {
        using OpenFileDialog dialog = new()
        {
            Title = "Choose an application, document, or shortcut",
            Filter = "Programs and shortcuts|*.exe;*.lnk;*.bat;*.cmd;*.ps1|All files|*.*"
        };

        if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            TargetBox.Text = dialog.FileName;
            SetIconPathFromTargetIfAutomatic(dialog.FileName);
        }
    }

    private void BrowseFolder_Click(object sender, RoutedEventArgs e)
    {
        using FolderBrowserDialog dialog = new()
        {
            Description = "Choose a folder to launch"
        };

        if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            TargetBox.Text = dialog.SelectedPath;
            TypeBox.SelectedItem = LauncherItemType.Folder;
            SetIconPathFromTargetIfAutomatic(dialog.SelectedPath);
        }
    }

    private void BrowseIcon_Click(object sender, RoutedEventArgs e)
    {
        using OpenFileDialog dialog = new()
        {
            Title = "Choose an icon file",
            Filter = "Icon files|*.ico;*.exe;*.dll|All files|*.*"
        };

        if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            IconPathBox.Text = dialog.FileName;
            loadedAutoIconPath = null;
        }
    }

    private void ResetIcon_Click(object sender, RoutedEventArgs e)
    {
        if (TypeBox.SelectedItem is LauncherItemType.Menu)
        {
            IconPathBox.Text = "";
            loadedAutoIconPath = null;
            UpdatePreview();
            return;
        }

        string target = TargetBox.Text.Trim();
        if (string.IsNullOrWhiteSpace(target))
        {
            IconPathBox.Text = "";
            loadedAutoIconPath = null;
        }
        else
        {
            IconPathBox.Text = target;
            loadedAutoIconPath = target;
        }

        UpdatePreview();
    }

    private void TypeBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (!isLoadingSelection)
        {
            UpdateTargetAvailability();
            UpdatePreview();
        }
    }

    private void PreviewField_Changed(object sender, EventArgs e)
    {
        if (!isLoadingSelection)
        {
            UpdatePreview();
        }
    }

    private void EnsureAutomaticIconPath()
    {
        if (TypeBox.SelectedItem is LauncherItemType.Menu)
        {
            return;
        }

        string target = TargetBox.Text.Trim();
        if (!string.IsNullOrWhiteSpace(target))
        {
            SetIconPathFromTargetIfAutomatic(target);
        }
    }

    private void SetIconPathFromTargetIfAutomatic(string target)
    {
        string currentIconPath = IconPathBox.Text.Trim();
        if (string.IsNullOrWhiteSpace(currentIconPath) ||
            string.Equals(currentIconPath, loadedAutoIconPath, StringComparison.OrdinalIgnoreCase))
        {
            IconPathBox.Text = target;
            loadedAutoIconPath = target;
        }
    }

    private static string? GetAutomaticIconPath(LauncherItem item)
    {
        if (item.Type == LauncherItemType.Menu || string.IsNullOrWhiteSpace(item.Target))
        {
            return null;
        }

        return string.Equals(item.IconPath, item.Target, StringComparison.OrdinalIgnoreCase)
            ? item.Target
            : null;
    }

    private void UpdatePreview()
    {
        if (PreviewHost is null)
        {
            return;
        }

        LauncherItem? previewItem = CreatePreviewItem();
        if (previewItem is null)
        {
            PreviewHost.Content = new TextBlock
            {
                Text = "Select an item to preview it.",
                Foreground = (System.Windows.Media.Brush)System.Windows.Application.Current.Resources["AppMutedTextBrush"]
            };
            PreviewNote.Text = "";
            return;
        }

        LauncherDisplayMode displayMode = previewItem.DisplayMode;
        PreviewHost.Content = CreatePreviewControl(previewItem, displayMode);
        PreviewNote.Text = previewItem.Type == LauncherItemType.Menu
            ? "Menu headers are shown as expandable section headers in the launcher. Display size applies to app, folder, file, and website items."
            : $"Icon {DisplayModeMetrics.GetIconSize(displayMode):0}px, row {DisplayModeMetrics.GetRowHeight(displayMode):0}px.";
    }

    private LauncherItem? CreatePreviewItem()
    {
        if (selectedItem is null)
        {
            return null;
        }

        return new LauncherItem
        {
            Title = string.IsNullOrWhiteSpace(TitleBox.Text) ? "Untitled" : TitleBox.Text.Trim(),
            Type = TypeBox.SelectedItem is LauncherItemType type ? type : LauncherItemType.App,
            Target = TargetBox.Text.Trim(),
            Arguments = string.IsNullOrWhiteSpace(ArgumentsBox.Text) ? null : ArgumentsBox.Text.Trim(),
            IconPath = string.IsNullOrWhiteSpace(IconPathBox.Text) ? null : IconPathBox.Text.Trim(),
            DisplayMode = ItemDisplayModeBox.SelectedItem is LauncherDisplayMode mode ? mode : LauncherDisplayMode.CompactList
        };
    }

    private static FrameworkElement CreatePreviewControl(LauncherItem item, LauncherDisplayMode displayMode)
    {
        if (item.Type == LauncherItemType.Menu)
        {
            return new TextBlock
            {
                Text = item.Title,
                FontWeight = FontWeights.SemiBold,
                VerticalAlignment = VerticalAlignment.Center
            };
        }

        if (displayMode == LauncherDisplayMode.LargeIconOnly)
        {
            ImageSource? iconOnly = IconService.GetIcon(item, large: true);
            return iconOnly is null
                ? new TextBlock { Text = item.Title, HorizontalAlignment = System.Windows.HorizontalAlignment.Center }
                : new System.Windows.Controls.Image
                {
                    Source = iconOnly,
                    Width = DisplayModeMetrics.GetIconSize(displayMode),
                    Height = DisplayModeMetrics.GetIconSize(displayMode),
                    HorizontalAlignment = System.Windows.HorizontalAlignment.Center
                };
        }

        StackPanel panel = new() { Orientation = System.Windows.Controls.Orientation.Horizontal };
        bool large = displayMode == LauncherDisplayMode.LargeIconWithText;
        ImageSource? icon = IconService.GetIcon(item, large);
        if (icon is not null)
        {
            double size = DisplayModeMetrics.GetIconSize(displayMode);
            panel.Children.Add(new System.Windows.Controls.Image
            {
                Source = icon,
                Width = size,
                Height = size,
                Margin = new Thickness(0, 0, 10, 0),
                VerticalAlignment = VerticalAlignment.Center
            });
        }

        panel.Children.Add(new TextBlock
        {
            Text = item.Title,
            FontSize = displayMode == LauncherDisplayMode.CompactList ? 12 : 14,
            VerticalAlignment = VerticalAlignment.Center,
            TextTrimming = TextTrimming.CharacterEllipsis
        });

        return new Border
        {
            MinHeight = DisplayModeMetrics.GetRowHeight(displayMode),
            Child = panel
        };
    }

    private void UpdateTargetAvailability()
    {
        bool isMenu = TypeBox.SelectedItem is LauncherItemType.Menu;
        TargetBox.IsEnabled = !isMenu;
        ArgumentsBox.IsEnabled = !isMenu;
        if (isMenu && !isLoadingSelection)
        {
            TargetBox.Text = "";
            ArgumentsBox.Text = "";
        }
    }

    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
    {
        e.Cancel = true;
        Hide();
    }
}