using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;
using Microsoft.Win32;
using BetterEN5.Services;

namespace BetterEN5.UI
{
    public partial class BetterSeewoMainWindow : Window
    {
        private readonly InkService _inkService = new();
        private readonly ConversionService _conversionService = new();
        private readonly ActivationService _activationService = new();

        public BetterSeewoMainWindow()
        {
            InitializeComponent();
            Loaded += OnLoaded;
        }

        private void OnLoaded(object sender, RoutedEventArgs e)
        {
            var sb = (Storyboard)TryFindResource("ScaleInStoryboard");
            if (sb != null) BeginStoryboard(sb);
            _ = RefreshStatusAsync();
        }

        private void NavChanged(object sender, RoutedEventArgs e)
        {
            if (sender == NavInk) ShowPanel(PanelInk);
            else if (sender == NavConvert) ShowPanel(PanelConvert);
            else if (sender == NavTouch) ShowPanel(PanelTouch);
            else if (sender == NavBoard) ShowPanel(PanelBoard);
            else if (sender == NavActivate) ShowPanel(PanelActivate);
        }

        private void ShowPanel(StackPanel panel)
        {
            foreach (var p in new[] { PanelInk, PanelConvert, PanelTouch, PanelBoard, PanelActivate })
                p.Visibility = p == panel ? Visibility.Visible : Visibility.Collapsed;
        }

        private async Task RefreshStatusAsync()
        {
            var touchOk = await Task.Run(() => TouchFixService.IsTouchWorkingCorrectly());
            TouchStatus.Text = touchOk ? "✅ IWB 模式已启用" : "⚠️ 未启用 IWB 模式";
            var info = await Task.Run(() => _activationService.GetCurrentStatus());
            ActivationStatusText.Text = info.IsProfessional
                ? $"✅ 专业版 · {info.LastActivationDate}"
                : "🔓 社区版";
        }

        private void Minimize_Click(object s, RoutedEventArgs e) => WindowState = WindowState.Minimized;
        private void Maximize_Click(object s, RoutedEventArgs e) => WindowState = WindowState == WindowState.Maximized ? WindowState.Normal : WindowState.Maximized;
        private void Close_Click(object s, RoutedEventArgs e) => Close();

        private async void ExportInk_Click(object s, RoutedEventArgs e)
        {
            var dialog = new SaveFileDialog { Title = "导出墨迹", Filter = "墨迹文件|*.ink.json|JSON|*.json", DefaultExt = ".ink.json" };
            if (dialog.ShowDialog() == true)
            {
                await ProgressDialog.Show(this, "导出墨迹", async p =>
                {
                    p.UpdateStatus("正在导出墨迹...", "读取课件笔迹数据");
                    await _inkService.ExportInkAsync(dialog.FileName);
                    p.UpdateStatus("导出完成", $"已保存至 {Path.GetFileName(dialog.FileName)}");
                });
                InkStatus.Text = $"已导出: {Path.GetFileName(dialog.FileName)}";
            }
        }

        private async void ImportInk_Click(object s, RoutedEventArgs e)
        {
            var dialog = new OpenFileDialog { Title = "导入墨迹", Filter = "墨迹文件|*.ink.json|JSON|*.json" };
            if (dialog.ShowDialog() == true)
            {
                await ProgressDialog.Show(this, "导入墨迹", async p =>
                {
                    p.UpdateStatus("正在导入墨迹...", "写入课件笔迹");
                    await _inkService.ImportInkAsync(dialog.FileName);
                });
                InkStatus.Text = "墨迹已导入";
            }
        }

        private async void ConvertPptx_Click(object s, RoutedEventArgs e)
        {
            var dialog = new OpenFileDialog { Title = "选择 PPT", Filter = "PowerPoint|*.pptx" };
            if (dialog.ShowDialog() == true)
            {
                await ProgressDialog.Show(this, "转换文件", async p =>
                {
                    p.UpdateStatus("正在转换 PPT → ENBX...", "调用转换器");
                    var result = await _conversionService.ConvertPptxToEnbxAsync(dialog.FileName);
                    p.UpdateStatus("转换完成", Path.GetFileName(result));
                });
            }
        }

        private async void ConvertEnbx_Click(object s, RoutedEventArgs e)
        {
            var dialog = new OpenFileDialog { Title = "选择 ENBX", Filter = "希沃课件|*.enbx" };
            if (dialog.ShowDialog() == true)
            {
                await ProgressDialog.Show(this, "转换文件", async p =>
                {
                    p.UpdateStatus("正在转换 ENBX → PPT...", "调用转换器");
                    var result = await _conversionService.ConvertEnbxToPptxAsync(dialog.FileName);
                    p.UpdateStatus("导出完成", Path.GetFileName(result));
                });
            }
        }

        private async void CheckTouch_Click(object s, RoutedEventArgs e)
        {
            var ok = await Task.Run(() => TouchFixService.IsTouchWorkingCorrectly());
            TouchStatus.Text = ok ? "✅ IWB 模式已启用" : "⚠️ 未启用 IWB 模式";
        }

        private async void ApplyTouchFix_Click(object s, RoutedEventArgs e)
        {
            await ProgressDialog.Show(this, "触摸修复", async p =>
            {
                p.UpdateStatus("正在写入注册表配置...", "ForceIWB");
                await Task.Run(() => TouchFixService.ApplyFixAsync());
                p.UpdateStatus("正在配置 IWB 模式...", "IWBConfig.json");
                await Task.Delay(300);
                p.UpdateStatus("完成", "请重启希沃白板生效");
            });
            TouchStatus.Text = "修复已应用，请重启";
        }

        private async void EnableBoardSupport_Click(object s, RoutedEventArgs e)
        {
            await ProgressDialog.Show(this, "大屏支持", async p =>
            {
                p.UpdateStatus("正在配置大屏模式...", "修补 Configs.fkv");
                await _activationService.ApplyBoardSupportPatchAsync();
                p.UpdateStatus("正在写入注册表...", "大屏相关键值");
                await Task.Delay(200);
                p.UpdateStatus("完成", "大屏模式已配置");
            });
            BoardStatus.Text = "大屏模式已配置";
        }

        private async void EnableIWB_Click(object s, RoutedEventArgs e)
        {
            await ProgressDialog.Show(this, "IWB 模式", async p =>
            {
                p.UpdateStatus("正在启用 IWB 模式...", "注册表 + 配置文件");
                await _activationService.EnableIWBForNonTouchAsync();
                p.UpdateStatus("完成", "IWB 模式已启用，重启生效");
            });
            BoardStatus.Text = "IWB 已启用";
        }

        private async void ActivatePro_Click(object s, RoutedEventArgs e)
        {
            var dlg = new ActivateDialog();
            dlg.Owner = this;
            if (dlg.ShowDialog() == true)
            {
                await ProgressDialog.Show(this, "激活", async p =>
                {
                    p.UpdateStatus("正在验证激活码...", "");
                    var ok = await _activationService.ActivateProfessionalAsync(dlg.LicenseKey);
                    if (ok)
                    {
                        p.UpdateStatus("激活成功", "专业版已启用");
                        ActivationStatusText.Text = "✅ 专业版已激活";
                    }
                    else
                    {
                        p.UpdateStatus("激活失败", "激活码无效");
                    }
                });
            }
        }

        private async void LaunchInstaller_Click(object s, RoutedEventArgs e)
        {
            var ok = await _activationService.LaunchBen5InstallerAsync();
            if (!ok)
                MessageBox.Show(this, "未找到注册补丁安装程序", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
        }

        private async void CheckActivation_Click(object s, RoutedEventArgs e)
        {
            var info = await Task.Run(() => _activationService.GetCurrentStatus());
            ActivationStatusText.Text = info.IsProfessional
                ? $"✅ 专业版 · {info.LastActivationDate}"
                : "🔓 社区版";
        }

        public static void ShowWindow()
        {
            Application.Current.Dispatcher.Invoke(() =>
            {
                var w = Application.Current.Windows.OfType<BetterSeewoMainWindow>().FirstOrDefault();
                if (w != null) { w.Activate(); return; }
                new BetterSeewoMainWindow().Show();
            });
        }
    }
}