using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Threading;

namespace AxCopilot.Views;

public partial class ChatWindow
{
    private Popup? _sharedContextPopup;

    private (Popup Popup, StackPanel Panel) CreateThemedPopupMenu(
        UIElement? placementTarget = null,
        PlacementMode placement = PlacementMode.MousePoint,
        double minWidth = 200)
    {
        _sharedContextPopup?.SetCurrentValue(Popup.IsOpenProperty, false);

        var panel = new StackPanel { Margin = new Thickness(2) };
        var container = CreateSurfacePopupContainer(panel, minWidth, new Thickness(6));

        var popup = new Popup
        {
            Child = container,
            StaysOpen = false,
            AllowsTransparency = true,
            PopupAnimation = PopupAnimation.Fade,
            Placement = placement,
            PlacementTarget = placementTarget,
        };

        _sharedContextPopup = popup;
        return (popup, panel);
    }

    private Border CreatePopupMenuItem(
        Popup popup,
        string icon,
        string label,
        Brush iconBrush,
        Brush labelBrush,
        Brush hoverBrush,
        Action action)
    {
        var item = CreateSurfacePopupMenuItem(icon, iconBrush, label, () =>
        {
            popup.SetCurrentValue(Popup.IsOpenProperty, false);
            action();
        }, labelBrush);
        item.MouseEnter += (s, _) => { if (s is Border b) b.Background = hoverBrush; };
        item.MouseLeave += (s, _) => { if (s is Border b) b.Background = Brushes.Transparent; };

        return item;
    }

    private static void AddPopupMenuSeparator(Panel panel, Brush brush)
    {
        panel.Children.Add(new Border
        {
            Height = 1,
            Margin = new Thickness(10, 4, 10, 4),
            Background = brush,
            Opacity = 0.35,
        });
    }

    /// <summary>최근 폴더 항목 우클릭 컨텍스트 메뉴를 표시합니다.</summary>
    private void ShowRecentFolderContextMenu(string folderPath)
    {
        var primaryText = TryFindResource("PrimaryText") as Brush ?? Brushes.White;
        var secondaryText = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray;
        var borderBrush = TryFindResource("BorderColor") as Brush ?? Brushes.Gray;
        var hoverBg = TryFindResource("ItemHoverBackground") as Brush ?? Brushes.Transparent;
        var warningBrush = new SolidColorBrush(Color.FromRgb(0xEF, 0x44, 0x44));
        var (popup, panel) = CreateThemedPopupMenu();

        panel.Children.Add(CreatePopupMenuItem(popup, "\uED25", "폴더 열기", secondaryText, primaryText, hoverBg, () =>
        {
            try
            {
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
                {
                    FileName = folderPath,
                    UseShellExecute = true,
                });
            }
            catch
            {
            }
        }));

        panel.Children.Add(CreatePopupMenuItem(popup, "\uE8C8", "경로 복사", secondaryText, primaryText, hoverBg, () =>
        {
            try { Clipboard.SetText(folderPath); } catch { }
        }));

        AddPopupMenuSeparator(panel, borderBrush);

        panel.Children.Add(CreatePopupMenuItem(popup, "\uE74D", "목록에서 삭제", warningBrush, warningBrush, hoverBg, () =>
        {
            _settings.Settings.Llm.RecentWorkFolders.RemoveAll(
                p => p.Equals(folderPath, StringComparison.OrdinalIgnoreCase));
            _settings.Save();
            if (FolderMenuPopup.IsOpen)
                ShowFolderMenu();
        }));

        Dispatcher.BeginInvoke(() => { popup.IsOpen = true; }, DispatcherPriority.Input);
    }
}