using System.Windows;
using System.Windows.Forms;
using Microsoft.Win32;
using Microsoft.Extensions.DependencyInjection;
using AxCopilot.Core;
using AxCopilot.Handlers;
using AxCopilot.Services;
using AxCopilot.ViewModels;
using AxCopilot.Views;

namespace AxCopilot;

public partial class App : System.Windows.Application
{
    private System.Threading.Mutex?   _singleInstanceMutex;
    private InputListener?            _inputListener;
    private LauncherWindow?           _launcher;
    private NotifyIcon?               _trayIcon;
    private Views.TrayMenuWindow?     _trayMenu;
    private SettingsService?          _settings;
    private SettingsWindow?           _settingsWindow;
    private PluginHost?               _pluginHost;
    private SchedulerService?         _schedulerService;
    private ClipboardHistoryService?  _clipboardHistory;
    private DockBarWindow?            _dockBar;
    private FileDialogWatcher?        _fileDialogWatcher;
    private volatile IndexService?    _indexService;
    private int                       _indexWarmupStarted;
    public  IndexService?             IndexService    => _indexService;
    public  SettingsService?          SettingsService => _settings;
    public  ClipboardHistoryService? ClipboardHistoryService => _clipboardHistory;
    private SessionTrackingService?   _sessionTracking;
    private WorktimeReminderService?  _worktimeReminder;
    private ScreenCaptureHandler?     _captureHandler;
    private AgentMemoryService?       _memoryService;
    private ChatSessionStateService?  _chatSessionState;
    private AppStateService?          _appState;
    public  AgentMemoryService?       MemoryService => _memoryService;
    public  ChatSessionStateService?  ChatSessionState => _chatSessionState;
    public  AppStateService?          AppState => _appState;

    protected override void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);

        // ─── 보안: 디버거/디컴파일러 감지 (Release 빌드만 활성) ───
        Security.AntiTamper.Check();

        // 전역 예외 핸들러 — 미처리 예외 시 로그 + 메시지 (크래시 방지)
        DispatcherUnhandledException += (_, ex) =>
        {
            LogService.Error($"미처리 예외: {ex.Exception}");
            CustomMessageBox.Show(
                $"오류가 발생했습니다:\n{ex.Exception.Message}\n\n로그 폴더를 확인하세요.",
                "AX Copilot 오류", System.Windows.MessageBoxButton.OK, System.Windows.MessageBoxImage.Error);
            ex.Handled = true;
        };

        // ─── 중복 실행 방지 ──────────────────────────────────────────────────
        _singleInstanceMutex = new System.Threading.Mutex(
            initiallyOwned: true, "Global\\AXCopilot_SingleInstance", out bool createdNew);
        if (!createdNew)
        {
            _singleInstanceMutex.Dispose();
            _singleInstanceMutex = null;
            CustomMessageBox.Show("AX Copilot가 이미 실행 중입니다.\n트레이 아이콘을 확인하세요.",
                "AX Copilot", System.Windows.MessageBoxButton.OK, System.Windows.MessageBoxImage.Information);
            Shutdown();
            return;
        }

        LogService.Info("=== AX Copilot 시작 ===");

        // ─── 서비스 초기화 ────────────────────────────────────────────────────
        _settings = new SettingsService();
        var settings = _settings;
        settings.Load();

        // ─── 워크플로우 상세 로그 초기화 ─────────────────────────────────────
        WorkflowLogService.IsEnabled = settings.Settings.Llm.EnableDetailedLog;
        WorkflowLogService.RetentionDays = settings.Settings.Llm.DetailedLogRetentionDays > 0
            ? settings.Settings.Llm.DetailedLogRetentionDays : 3;
        WorkflowLogService.IsRawLogEnabled = settings.Settings.Llm.EnableRawLlmLog;

        // ─── 대화 보관/디스크 정리 (제품화 하드닝) ───────────────────────────
        try
        {
            var chatStorage = new ChatStorageService();
            var retentionDays = settings.Settings.CleanupPeriodDays;
            if (retentionDays > 0)
            {
                var purgedExpired = chatStorage.PurgeExpired(retentionDays);
                if (purgedExpired > 0)
                    LogService.Info($"대화 보관 정책 정리 완료: {purgedExpired}개 삭제 (보관 {retentionDays}일)");
            }

            var purgedForDisk = chatStorage.PurgeForDiskSpace();
            if (purgedForDisk > 0)
                LogService.Info($"디스크 보호 정리 완료: {purgedForDisk}개 삭제");
        }
        catch (Exception ex)
        {
            LogService.Warn($"대화 보관 정리 중 오류: {ex.Message}");
        }

        // 업데이트/마이그레이션 안내 메시지박스는 표시하지 않음.

        // 언어 초기화
        L10n.SetLanguage(settings.Settings.Launcher.Language);

        // 첫 실행 시 자동 시작 등록 (레지스트리에 아직 없으면)
        if (!IsAutoStartEnabled())
            SetAutoStart(true);

        _memoryService = new AgentMemoryService();
        _memoryService.Load(settings.Settings.Llm.WorkFolder);
        _chatSessionState = new ChatSessionStateService();
        _chatSessionState.Load(settings);
        _appState = new AppStateService();
        _appState.AttachChatSession(_chatSessionState);
        _appState.LoadFromSettings(settings);

        // ─── DI 컨테이너 초기화 (기존 인스턴스 등록, 점진적 전환) ──────────────
        ConfigureDependencyInjection(settings, _memoryService, _chatSessionState, _appState);

        _indexService = new IndexService(settings);
        var indexService = _indexService;
        // 캐시 로드를 백그라운드에서 실행 — UI 스레드 블록 방지
        // FuzzyEngine은 IndexEntriesChanged 이벤트를 구독하여 캐시 로드 완료 시 자동 반영됨
        _ = Task.Run(() =>
        {
            indexService.LoadCachedIndex();
            if (indexService.HasCachedIndexLoaded)
                indexService.StartWatchers();
        });
        var fuzzyEngine = new FuzzyEngine(indexService);
        var commandResolver = new CommandResolver(fuzzyEngine, settings);
        var contextManager = new ContextManager(settings);

        // ─── 세션 추적 / 사용 통계 ────────────────────────────────────────────
        _sessionTracking = new SessionTrackingService();

        // ─── 잠금 해제 알림 서비스 ────────────────────────────────────────────
        _worktimeReminder = new WorktimeReminderService(settings, Dispatcher);

        // ─── 클립보드 히스토리 서비스 ──────────────────────────────────────────
        _clipboardHistory = new ClipboardHistoryService(settings);

        // ─── 빌트인 핸들러 등록 ──────────────────────────────────────────────
        commandResolver.RegisterHandler(new CalculatorHandler());
        commandResolver.RegisterHandler(new SystemCommandHandler(settings));
        commandResolver.RegisterHandler(new SnippetHandler(settings));
        commandResolver.RegisterHandler(new ClipboardHistoryHandler(_clipboardHistory));
        commandResolver.RegisterHandler(new WorkspaceHandler(contextManager, settings));
        commandResolver.RegisterHandler(new UrlAliasHandler(settings));
        commandResolver.RegisterHandler(new FolderAliasHandler(settings));
        commandResolver.RegisterHandler(new BatchHandler(settings));
        commandResolver.RegisterHandler(new ClipboardHandler(settings));
        commandResolver.RegisterHandler(new BookmarkHandler());
        commandResolver.RegisterHandler(new WebSearchHandler(settings));
        commandResolver.RegisterHandler(new ProcessHandler());
        commandResolver.RegisterHandler(new MediaHandler());
        commandResolver.RegisterHandler(new SystemInfoHandler());
        commandResolver.RegisterHandler(new StarInfoHandler()); // * 단축키 (info와 동일)
        commandResolver.RegisterHandler(new EmojiHandler());
        commandResolver.RegisterHandler(new ColorHandler());
        commandResolver.RegisterHandler(new RecentFilesHandler());
        commandResolver.RegisterHandler(new NoteHandler());
        commandResolver.RegisterHandler(new UninstallHandler());
        commandResolver.RegisterHandler(new PortHandler());
        commandResolver.RegisterHandler(new EnvHandler());
        commandResolver.RegisterHandler(new JsonHandler());
        commandResolver.RegisterHandler(new EncodeHandler());
        commandResolver.RegisterHandler(new SnapHandler());
        _captureHandler = new ScreenCaptureHandler(settings);
        commandResolver.RegisterHandler(_captureHandler);
        commandResolver.RegisterHandler(new ColorPickHandler());
        commandResolver.RegisterHandler(new DateCalcHandler());
        commandResolver.RegisterHandler(new ServiceHandler(_clipboardHistory));
        commandResolver.RegisterHandler(new ClipboardPipeHandler());
        commandResolver.RegisterHandler(new JournalHandler());
        commandResolver.RegisterHandler(new RoutineHandler());
        commandResolver.RegisterHandler(new BatchTextHandler());
        commandResolver.RegisterHandler(new DiffHandler(_clipboardHistory));
        commandResolver.RegisterHandler(new WindowSwitchHandler());
        commandResolver.RegisterHandler(new RunHandler());
        commandResolver.RegisterHandler(new TextStatsHandler());
        commandResolver.RegisterHandler(new FavoriteHandler());
        commandResolver.RegisterHandler(new RenameHandler());
        commandResolver.RegisterHandler(new MonitorHandler());
        commandResolver.RegisterHandler(new ScaffoldHandler());
        commandResolver.RegisterHandler(new EverythingHandler());
        commandResolver.RegisterHandler(new HelpHandler(settings));
        commandResolver.RegisterHandler(new ChatHandler(settings));
        commandResolver.RegisterHandler(new QuickLinkHandler(settings));
        commandResolver.RegisterHandler(new TagHandler());
        commandResolver.RegisterHandler(new NotifHandler());
        commandResolver.RegisterHandler(new PomoHandler());
        commandResolver.RegisterHandler(new FileBrowserHandler());
        commandResolver.RegisterHandler(new HotkeyHandler(settings));
        commandResolver.RegisterHandler(new OcrHandler());
        commandResolver.RegisterHandler(new SessionHandler(settings));
        commandResolver.RegisterHandler(new BatchRenameHandler());
        _schedulerService = new SchedulerService(settings);
        _schedulerService.Refresh();
        commandResolver.RegisterHandler(new ScheduleHandler(settings));
        commandResolver.RegisterHandler(new MacroHandler(settings));
        commandResolver.RegisterHandler(new ContextHandler());
        commandResolver.RegisterHandler(new GitHandler());
        commandResolver.RegisterHandler(new RegexHandler());
        commandResolver.RegisterHandler(new TimeZoneHandler());
        commandResolver.RegisterHandler(new NetDiagHandler());
        commandResolver.RegisterHandler(new FileHashHandler());
        commandResolver.RegisterHandler(new ZipHandler());
        commandResolver.RegisterHandler(new EventLogHandler());
        commandResolver.RegisterHandler(new SshHandler(settings));
        commandResolver.RegisterHandler(new PasswordGenHandler());
        commandResolver.RegisterHandler(new SubnetHandler());
        commandResolver.RegisterHandler(new CleanHandler());
        commandResolver.RegisterHandler(new BaseConvertHandler());
        commandResolver.RegisterHandler(new XmlHandler());
        commandResolver.RegisterHandler(new UuidHandler());
        commandResolver.RegisterHandler(new CertHandler());
        commandResolver.RegisterHandler(new LoremHandler());
        commandResolver.RegisterHandler(new CsvHandler());
        commandResolver.RegisterHandler(new JwtHandler());
        commandResolver.RegisterHandler(new CronHandler());
        commandResolver.RegisterHandler(new UnicodeHandler());
        commandResolver.RegisterHandler(new HttpTesterHandler());
        commandResolver.RegisterHandler(new HostsHandler());
        commandResolver.RegisterHandler(new MorseHandler());
        commandResolver.RegisterHandler(new StartupHandler());
        commandResolver.RegisterHandler(new DnsQueryHandler());
        commandResolver.RegisterHandler(new PathHandler());
        commandResolver.RegisterHandler(new DriveHandler());
        commandResolver.RegisterHandler(new AgeHandler());
        commandResolver.RegisterHandler(new WolHandler());
        commandResolver.RegisterHandler(new RegHandler());
        commandResolver.RegisterHandler(new TipHandler());
        commandResolver.RegisterHandler(new FontHandler());
        commandResolver.RegisterHandler(new WslHandler());
        commandResolver.RegisterHandler(new CurrencyHandler());
        commandResolver.RegisterHandler(new BmiHandler());
        commandResolver.RegisterHandler(new MdHandler());
        commandResolver.RegisterHandler(new PingHandler());
        commandResolver.RegisterHandler(new DockerHandler());
        commandResolver.RegisterHandler(new TodoHandler());
        commandResolver.RegisterHandler(new TableHandler());
        commandResolver.RegisterHandler(new UnitHandler());
        commandResolver.RegisterHandler(new NumHandler());
        commandResolver.RegisterHandler(new YamlHandler());
        commandResolver.RegisterHandler(new GitignoreHandler());
        commandResolver.RegisterHandler(new SqlHandler());
        commandResolver.RegisterHandler(new TextCaseHandler());
        commandResolver.RegisterHandler(new AspectHandler());
        commandResolver.RegisterHandler(new AbbrHandler());
        commandResolver.RegisterHandler(new CalcHandler());
        commandResolver.RegisterHandler(new TimerHandler());
        commandResolver.RegisterHandler(new IpInfoHandler());
        commandResolver.RegisterHandler(new NpmHandler());
        commandResolver.RegisterHandler(new HexHandler());
        commandResolver.RegisterHandler(new RandHandler());
        commandResolver.RegisterHandler(new StrHandler());
        commandResolver.RegisterHandler(new PermHandler());
        commandResolver.RegisterHandler(new TomlHandler());
        commandResolver.RegisterHandler(new LogHandler());
        commandResolver.RegisterHandler(new PsHandler());
        commandResolver.RegisterHandler(new KeyHandler());
        commandResolver.RegisterHandler(new ProcHandler());
        commandResolver.RegisterHandler(new XlHandler());
        commandResolver.RegisterHandler(new PipHandler());
        commandResolver.RegisterHandler(new FormHandler());
        commandResolver.RegisterHandler(new CalHandler());
        commandResolver.RegisterHandler(new LeaveHandler());
        commandResolver.RegisterHandler(new WorkTimeHandler());
        commandResolver.RegisterHandler(new FixHandler());
        commandResolver.RegisterHandler(new SpellHandler());
        commandResolver.RegisterHandler(new ContactHandler());
        commandResolver.RegisterHandler(new RemindHandler());
        commandResolver.RegisterHandler(new PhraseHandler());
        commandResolver.RegisterHandler(new TodayHandler());
        commandResolver.RegisterHandler(new VolHandler());
        commandResolver.RegisterHandler(new QrHandler());
        commandResolver.RegisterHandler(new MeetHandler());
        commandResolver.RegisterHandler(new BrightHandler());
        commandResolver.RegisterHandler(new PasteHandler(_clipboardHistory));
        commandResolver.RegisterHandler(new PkgHandler());
        commandResolver.RegisterHandler(new ApHandler());
        commandResolver.RegisterHandler(new DictHandler());
        commandResolver.RegisterHandler(new FlowHandler());

        // ─── 플러그인 로드 ────────────────────────────────────────────────────
        var pluginHost = new PluginHost(settings, commandResolver);
        pluginHost.LoadAll();
        _pluginHost = pluginHost;

        // ─── 런처 윈도우 ──────────────────────────────────────────────────────
        var vm = new LauncherViewModel(commandResolver, settings);
        _launcher = new LauncherWindow(vm)
        {
            OpenSettingsAction = OpenSettings,
            SendToChatAction = msg =>
            {
                OpenAiChat();
                _chatWindow?.SendInitialMessage(msg);
            }
        };

        // ─── 클립보드 히스토리 초기화 (메시지 펌프 시작 직후 — 런처 표시 불필요) ──
        Dispatcher.BeginInvoke(
            () => _clipboardHistory?.Initialize(),
            System.Windows.Threading.DispatcherPriority.ApplicationIdle);

        // ─── 런처 인덱스 캐시/감시 초기화 ─────────────────────────────────────
        // 앱 시작 시엔 저장된 캐시를 즉시 로드하고, 파일 감시는 증분 반영 위주로 유지합니다.
        // 무거운 전체 재색인은 실제 검색이 시작될 때 한 번만 보강 실행합니다.

        // ─── 글로벌 훅 + 스니펫 확장기 ───────────────────────────────────────
        _inputListener = new InputListener();
        _inputListener.HotkeyTriggered += OnHotkeyTriggered;
        _inputListener.CaptureHotkeyTriggered += OnCaptureHotkeyTriggered;
        _inputListener.HookFailed += OnHookFailed;

        // 설정에 저장된 핫키로 초기화 (기본: Alt+Space)
        _inputListener.UpdateHotkey(settings.Settings.Hotkey);

        // 글로벌 캡처 단축키 초기화
        _inputListener.UpdateCaptureHotkey(
            settings.Settings.ScreenCapture.GlobalHotkey,
            settings.Settings.ScreenCapture.GlobalHotkeyEnabled);

        var snippetExpander = new SnippetExpander(settings);
        _inputListener.KeyFilter = snippetExpander.HandleKey;

        _inputListener.Start();

        // ─── 시스템 트레이 ─────────────────────────────────────────────────────
        SetupTrayIcon(pluginHost, settings);

        // ─── 파일 대화상자 감지 ──────────────────────────────────────────────
        _fileDialogWatcher = new FileDialogWatcher();
        _fileDialogWatcher.FileDialogOpened += (_, hwnd) =>
        {
            Dispatcher.Invoke(() =>
            {
                if (_launcher == null || _launcher.IsVisible) return;
                if (_settings?.Settings.Launcher.EnableFileDialogIntegration != true) return;
                WindowTracker.Capture();
                ShowLauncherWindow();
                Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input,
                    () => _launcher.SetInputText("cd "));
            });
        };
        UpdateFileDialogWatcherState();

        settings.SettingsChanged += (_, _) =>
        {
            Dispatcher.BeginInvoke(() =>
            {
                UpdateFileDialogWatcherState();
                _schedulerService?.Refresh();
            });
        };

        // 독 바 자동 표시
        if (settings.Settings.Launcher.DockBarAutoShow)
            Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Loaded, () => ToggleDockBar());

        LogService.Info($"초기화 완료. {settings.Settings.Hotkey}로 실행하세요.");
    }

    private void OnHotkeyTriggered(object? sender, EventArgs e)
    {
        // 런처가 열리기 전 현재 활성 창을 저장 (SnapHandler, ScreenCaptureHandler용)
        WindowTracker.Capture();

        // 선택 텍스트 감지는 UI 스레드 밖에서 수행해야 SendInput이 정상 처리됨
        var launcherSettings = _settings?.Settings.Launcher;
        var enableTextAction = launcherSettings?.EnableTextAction == true;

        // ── 텍스트 감지 활성: 런처를 먼저 열고, 텍스트 감지를 비동기로 처리 ──
        string? selectedText = enableTextAction ? TryGetSelectedText() : null;

        // BeginInvoke 사용 — Dispatcher.Invoke 데드락 방지
        Dispatcher.BeginInvoke(() =>
        {
            // 런처 토글(닫기)
            if (_launcher?.IsVisible == true)
            {
                _launcher.Hide();
                return;
            }

            // 텍스트 감지 비활성 또는 선택 텍스트 없음
            if (!enableTextAction || string.IsNullOrWhiteSpace(selectedText))
            {
                if (_launcher == null) return;
                UsageStatisticsService.RecordLauncherOpen();
                ShowLauncherWindow();
                return;
            }
            // 텍스트 감지 활성 + 선택 텍스트 있음 → 텍스트 액션 처리
            var enabledCmds = launcherSettings?.TextActionCommands ?? new();

            // 활성 명령이 1개뿐이면 팝업 없이 바로 실행
            if (enabledCmds.Count == 1)
            {
                var directAction = TextActionPopup.AvailableCommands
                    .FirstOrDefault(c => c.Key == enabledCmds[0]);
                if (!string.IsNullOrEmpty(directAction.Key))
                {
                    var actionResult = enabledCmds[0] switch
                    {
                        "translate" => TextActionPopup.ActionResult.Translate,
                        "summarize" => TextActionPopup.ActionResult.Summarize,
                        "grammar"   => TextActionPopup.ActionResult.GrammarFix,
                        "explain"   => TextActionPopup.ActionResult.Explain,
                        "rewrite"   => TextActionPopup.ActionResult.Rewrite,
                        _           => TextActionPopup.ActionResult.None,
                    };
                    if (actionResult != TextActionPopup.ActionResult.None)
                    {
                        ExecuteTextAction(actionResult, selectedText);
                        return;
                    }
                }
            }

            // 여러 개 → 팝업 표시
            var popup = new TextActionPopup(selectedText, enabledCmds);
            popup.Closed += (_, _) =>
            {
                switch (popup.SelectedAction)
                {
                    case TextActionPopup.ActionResult.OpenLauncher:
                        UsageStatisticsService.RecordLauncherOpen();
                        ShowLauncherWindow();
                        break;
                    case TextActionPopup.ActionResult.None:
                        break;
                    default:
                        ExecuteTextAction(popup.SelectedAction, popup.SelectedText);
                        break;
                }
            };
            popup.Show();
        });
    }

    /// <summary>현재 선택된 텍스트를 가져옵니다 (Ctrl+C 시뮬레이션).</summary>
    /// <remarks>후크 스레드에서 호출됩니다 (UI 스레드 아님). 클립보드 접근은 STA 스레드가 필요합니다.</remarks>
    private string? TryGetSelectedText()
    {
        try
        {
            // 클립보드는 STA 스레드에서만 접근 가능 → Dispatcher로 읽기
            string? prevText = null;
            bool hadText = false;
            Dispatcher.Invoke(() =>
            {
                hadText = System.Windows.Clipboard.ContainsText();
                prevText = hadText ? System.Windows.Clipboard.GetText() : null;
                System.Windows.Clipboard.Clear();
            });

            System.Threading.Thread.Sleep(30);

            // Ctrl+C 시뮬레이션 (후크 스레드에서 → 대상 앱이 처리)
            var inputs = new[]
            {
                new NativeMethods.INPUT { type = 1, u = new NativeMethods.InputUnion { ki = new NativeMethods.KEYBDINPUT { wVk = 0x11 } } },
                new NativeMethods.INPUT { type = 1, u = new NativeMethods.InputUnion { ki = new NativeMethods.KEYBDINPUT { wVk = 0x43 } } },
                new NativeMethods.INPUT { type = 1, u = new NativeMethods.InputUnion { ki = new NativeMethods.KEYBDINPUT { wVk = 0x43, dwFlags = 0x0002 } } },
                new NativeMethods.INPUT { type = 1, u = new NativeMethods.InputUnion { ki = new NativeMethods.KEYBDINPUT { wVk = 0x11, dwFlags = 0x0002 } } },
            };
            NativeMethods.SendInput((uint)inputs.Length, inputs, System.Runtime.InteropServices.Marshal.SizeOf<NativeMethods.INPUT>());

            // 클립보드 업데이트 대기 (앱마다 다름)
            System.Threading.Thread.Sleep(80);

            // 클립보드에서 새 텍스트 확인 (STA 필요)
            string? selected = null;
            Dispatcher.Invoke(() =>
            {
                if (System.Windows.Clipboard.ContainsText())
                {
                    var copied = System.Windows.Clipboard.GetText();
                    if (copied != prevText && !string.IsNullOrWhiteSpace(copied))
                        selected = copied;
                }

                // 클립보드 복원
                if (selected != null && prevText != null)
                    System.Windows.Clipboard.SetText(prevText);
                else if (selected != null && !hadText)
                    System.Windows.Clipboard.Clear();
            });

            return selected;
        }
        catch
        {
            return null;
        }
    }

    /// <summary>AI 텍스트 명령을 AX Agent 대화로 전달합니다.</summary>
    private void ExecuteTextAction(TextActionPopup.ActionResult action, string text)
    {
        var prompt = action switch
        {
            TextActionPopup.ActionResult.Translate   => $"다음 텍스트를 번역해줘:\n\n{text}",
            TextActionPopup.ActionResult.Summarize   => $"다음 텍스트를 요약해줘:\n\n{text}",
            TextActionPopup.ActionResult.GrammarFix  => $"다음 텍스트의 문법을 교정해줘:\n\n{text}",
            TextActionPopup.ActionResult.Explain     => $"다음 텍스트를 쉽게 설명해줘:\n\n{text}",
            TextActionPopup.ActionResult.Rewrite     => $"다음 텍스트를 다시 작성해줘:\n\n{text}",
            _ => text
        };

        // ! 프리픽스로 AX Agent에 전달
        ShowLauncherWindow();
        _launcher?.SetInputText($"! {prompt}");
    }

    private static class NativeMethods
    {
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        public static extern uint SendInput(uint nInputs, INPUT[] pInputs, int cbSize);

        [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
        public struct INPUT { public uint type; public InputUnion u; }

        [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Explicit)]
        public struct InputUnion { [System.Runtime.InteropServices.FieldOffset(0)] public KEYBDINPUT ki; }

        [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
        public struct KEYBDINPUT { public ushort wVk; public ushort wScan; public uint dwFlags; public uint time; public IntPtr dwExtraInfo; }
    }

    private void OnCaptureHotkeyTriggered(object? sender, EventArgs e)
    {
        // 런처 없이 직접 캡처 실행
        WindowTracker.Capture();
        var mode = _settings?.Settings.ScreenCapture.GlobalHotkeyMode ?? "screen";
        Dispatcher.Invoke(async () =>
        {
            if (_captureHandler == null) return;
            try
            {
                await _captureHandler.CaptureDirectAsync(mode);
            }
            catch (Exception ex)
            {
                LogService.Error($"글로벌 캡처 실패: {ex.Message}");
            }
        });
    }

    private void OnHookFailed(object? sender, EventArgs e)
    {
        Dispatcher.Invoke(() =>
        {
            _trayIcon?.ShowBalloonTip(3000, "AX Copilot",
                $"글로벌 단축키 등록에 실패했습니다.\n다른 앱과 {_settings?.Settings.Hotkey ?? "단축키"}가 충돌하고 있을 수 있습니다.",
                ToolTipIcon.Warning);
        });
    }

    private void SetupTrayIcon(PluginHost pluginHost, SettingsService settings)
    {
        var version = typeof(App).Assembly.GetName().Version;
        var versionText = version == null
            ? "AX Copilot v.0.0.0"
            : $"AX Copilot v.{version.Major}.{version.Minor}.{version.Build}";

        _trayIcon = new NotifyIcon
        {
            Text    = "AX Copilot",
            Visible = true,
            Icon    = LoadAppIcon()
        };

        // ─── WPF 커스텀 트레이 메뉴 구성 ──────────────────────────────────
        _trayMenu = new Views.TrayMenuWindow();
        _trayMenu
            .AddHeader(versionText)
            .AddItem("\uE7C5", "AX Commander 호출하기", () =>
                Dispatcher.Invoke(ShowLauncherWindow), hint: "double-click")
            .AddItem("\uE8BD", "AX Agent 대화하기", () =>
                Dispatcher.Invoke(OpenAiChat), out var aiTrayItem, hint: "click")
            .AddItem("\uE8A7", "독 바 표시", () =>
                Dispatcher.Invoke(() => ToggleDockBar()))
            .AddSeparator()
            .AddItem("\uE72C", "플러그인 재로드", () =>
            {
                pluginHost.Reload();
                _trayIcon!.ShowBalloonTip(2000, "AX Copilot", "플러그인이 재로드되었습니다.", ToolTipIcon.None);
            })
            .AddItem("\uE838", "로그 폴더 열기", () =>
            {
                var logDir = System.IO.Path.Combine(
                    Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
                    "AxCopilot", "logs");
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo("explorer.exe", logDir)
                    { UseShellExecute = true });
            })
            .AddItem("\uE9D9", "사용 통계", () =>
                Dispatcher.Invoke(() => new StatisticsWindow().Show()))
            .AddItem("\uE736", "사용 가이드 문서보기", () =>
            {
                try { Dispatcher.Invoke(() => new Views.GuideViewerWindow().Show()); }
                catch (Exception ex) { LogService.Error($"사용 가이드 열기 실패: {ex.Message}"); }
            })
            .AddSeparator()
            .AddToggleItem("\uE82F", "Windows 시작 시 자동 실행", IsAutoStartEnabled(),
                isChecked => SetAutoStart(isChecked), out _, out _)
            .AddSeparator()
            .AddItem("\uE713", "설정", () =>
                Dispatcher.Invoke(OpenSettings))
            .AddItem("\uE946", "개발 정보", () =>
                Dispatcher.Invoke(() => new AboutWindow().Show()))
            .AddItem("\uE711", "종료", () =>
            {
                _inputListener?.Dispose();
                _trayIcon?.Dispose();
                Shutdown();
            });

        // AI 기능 활성화 여부에 따라 메뉴 항목 가시성 동적 업데이트
        _trayMenu.Opening += () =>
        {
            aiTrayItem.Visibility = settings.Settings.AiEnabled
                ? System.Windows.Visibility.Visible
                : System.Windows.Visibility.Collapsed;
        };

        // 좌클릭 → 대화창, 더블클릭 → 런처, 우클릭 → 메뉴
        // MouseClick은 버튼 정보를 제공하므로 Click 대신 사용 — Click은 모든 버튼에 발생하여 우클릭 메뉴와 충돌
        System.Windows.Forms.Timer? _trayClickTimer = null;
        _trayIcon.MouseClick += (_, e) =>
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Right)
            {
                // 우클릭: 컨텍스트 메뉴 표시 (싱글클릭 타이머 간섭 방지)
                _trayClickTimer?.Stop();
                _trayClickTimer?.Dispose();
                _trayClickTimer = null;
                Dispatcher.Invoke(() => _trayMenu?.ShowWithUpdate());
                return;
            }
            if (e.Button != System.Windows.Forms.MouseButtons.Left) return;
            // 싱글/더블 클릭 구분: WinForms NotifyIcon은 DoubleClick 시에도 Click을 먼저 발생시키므로
            // 타이머를 사용하여 더블클릭 대기 후 싱글 클릭 액션을 실행
            _trayClickTimer?.Stop();
            _trayClickTimer?.Dispose();
            _trayClickTimer = new System.Windows.Forms.Timer { Interval = SystemInformation.DoubleClickTime };
            _trayClickTimer.Tick += (s, _) =>
            {
                _trayClickTimer?.Stop();
                _trayClickTimer?.Dispose();
                _trayClickTimer = null;
                // 싱글 클릭: 대화창 열기
                Dispatcher.BeginInvoke(() =>
                {
                    if (settings.Settings.AiEnabled)
                        OpenAiChat();
                    else
                        ShowLauncherWindow();
                });
            };
            _trayClickTimer.Start();
        };
        _trayIcon.MouseDoubleClick += (_, e) =>
        {
            if (e.Button != System.Windows.Forms.MouseButtons.Left) return;
            // 싱글 클릭 타이머 취소 → 런처만 열림
            _trayClickTimer?.Stop();
            _trayClickTimer?.Dispose();
            _trayClickTimer = null;
            Dispatcher.BeginInvoke(ShowLauncherWindow);
        };

        // 타이머/알람 풍선 알림 서비스 연결
        NotificationService.Initialize((title, msg) =>
        {
            Dispatcher.Invoke(() =>
                _trayIcon?.ShowBalloonTip(4000, title, msg, ToolTipIcon.None));
        });
    }

    /// <summary>ChatWindow 등 외부에서 설정 창을 여는 공개 메서드.</summary>
    public void OpenSettingsFromChat() => Dispatcher.Invoke(() =>
    {
        OpenSettings();
        _settingsWindow?.SelectAgentSettingsTab();
    });

    /// <summary>AX Agent 창을 열고 전용 설정창을 바로 표시합니다.</summary>
    public void OpenAgentSettingsInChat()
    {
        Dispatcher.Invoke(() =>
        {
            OpenAiChat();
            _chatWindow?.OpenAgentSettingsFromExternal();
        });
    }

    /// <summary>AX Agent 창 열기 (트레이 메뉴 등에서 호출).</summary>
    private Views.ChatWindow? _chatWindow;

    public void EnsureIndexWarmupStarted()
    {
        if (_indexService == null) return;
        if (Interlocked.Exchange(ref _indexWarmupStarted, 1) == 1) return;

        _ = Task.Run(async () =>
        {
            try
            {
                await _indexService.BuildAsync().ConfigureAwait(false);
                _indexService.StartWatchers();
            }
            catch (Exception ex)
            {
                LogService.Warn($"런처 인덱스 초기화 실패: {ex.Message}");
            }
        });
    }

    private void ShowLauncherWindow()
    {
        if (_launcher == null) return;
        _launcher.Show();
    }

    private void OpenAiChat()
    {
        if (_settings == null) return;
        if (_chatWindow == null)
        {
            _chatWindow = new Views.ChatWindow(_settings);
        }
        _chatWindow.Show();
        _chatWindow.Activate();
    }

    public void ToggleDockBar()
    {
        if (_dockBar != null && _dockBar.IsVisible)
        {
            _dockBar.Hide();
            return;
        }

        if (_dockBar == null)
        {
            _dockBar = new DockBarWindow();
            _dockBar.OnQuickSearch = query =>
            {
                if (_launcher == null) return;
                ShowLauncherWindow();
                _launcher.Activate(); // 독 바 뒤가 아닌 전면에 표시
                if (!string.IsNullOrEmpty(query))
                    Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input,
                        () => _launcher.SetInputText(query));
            };
            _dockBar.OnCapture = async () =>
            {
                WindowTracker.Capture();
                if (_captureHandler != null)
                    await _captureHandler.CaptureDirectAsync("region");
            };
            _dockBar.OnOpenAgent = () =>
            {
                if (_launcher == null) return;
                ShowLauncherWindow();
                Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input,
                    () => _launcher.SetInputText("!"));
            };
        }
        var launcher = _settings?.Settings.Launcher;
        var dockItems = launcher?.DockBarItems ?? new() { "launcher", "clipboard", "capture", "agent", "clock", "cpu" };
        _dockBar.BuildFromSettings(dockItems);
        _dockBar.OnPositionChanged = (deviceName, left, top) =>
        {
            if (_settings != null && !string.IsNullOrWhiteSpace(deviceName))
            {
                _settings.Settings.Launcher.DockBarLeft = left;
                _settings.Settings.Launcher.DockBarTop = top;
                _settings.Settings.Launcher.MonitorDockPositions[deviceName] = new List<double> { left, top };
                _settings.Save();
            }
        };
        _dockBar.Show();
        var (dockLeft, dockTop) = ResolveDockBarPosition(launcher);
        _dockBar.ApplySettings(
            launcher?.DockBarOpacity ?? 0.92,
            dockLeft,
            dockTop,
            launcher?.DockBarRainbowGlow ?? false);
    }

    /// <summary>독 바를 현재 설정으로 즉시 새로고침합니다.</summary>
    public void RefreshDockBar()
    {
        if (_dockBar == null || !_dockBar.IsVisible) return;
        var launcher = _settings?.Settings.Launcher;
        var dockItems = launcher?.DockBarItems ?? new() { "launcher", "clipboard", "capture", "agent", "clock", "cpu" };
        _dockBar.BuildFromSettings(dockItems);
        var (dockLeft, dockTop) = ResolveDockBarPosition(launcher);
        _dockBar.ApplySettings(
            launcher?.DockBarOpacity ?? 0.92,
            dockLeft,
            dockTop,
            launcher?.DockBarRainbowGlow ?? false);
    }

    private (double Left, double Top) ResolveDockBarPosition(AxCopilot.Models.LauncherSettings? launcher)
    {
        if (launcher == null)
            return (-1, -1);

        var currentScreen = Screen.FromPoint(System.Windows.Forms.Cursor.Position);
        var currentDeviceName = currentScreen.DeviceName;
        if (launcher.MonitorDockPositions.TryGetValue(currentDeviceName, out var stored)
            && stored is { Count: >= 2 }
            && IsDockPositionValid(currentScreen, stored[0], stored[1]))
        {
            launcher.DockBarLeft = stored[0];
            launcher.DockBarTop = stored[1];
            return (stored[0], stored[1]);
        }

        var left = launcher.DockBarLeft;
        var top = launcher.DockBarTop;
        if (left >= 0 && top >= 0)
        {
            var matchedScreen = Screen.AllScreens.FirstOrDefault(screen => IsDockPositionValid(screen, left, top));
            if (matchedScreen != null)
                return (left, top);
        }

        launcher.DockBarLeft = -1;
        launcher.DockBarTop = -1;
        try { _settings?.Save(); } catch { }
        return (-1, -1);
    }

    private bool IsDockPositionValid(Screen screen, double left, double top)
    {
        if (left < 0 || top < 0)
            return false;

        var width = _dockBar?.ActualWidth > 0 ? _dockBar.ActualWidth : 420;
        var height = _dockBar?.ActualHeight > 0 ? _dockBar.ActualHeight : 56;
        var area = screen.WorkingArea;
        return left >= area.Left
            && top >= area.Top
            && left + width <= area.Right
            && top + height <= area.Bottom;
    }

    private void OpenSettings()
    {
        if (_settingsWindow != null && _settingsWindow.IsVisible)
        {
            _settingsWindow.Activate();
            return;
        }

        if (_settings == null || _launcher == null) return;

        var vm = new ViewModels.SettingsViewModel(_settings);

        // 미리보기 콜백: 현재 편집 중인 색상(vm.ColorRows)으로 런처에 즉시 반영
        void PreviewCallback(string themeKey)
        {
            if (themeKey == "custom")
            {
                var tempColors = new AxCopilot.Models.CustomThemeColors();
                foreach (var row in vm.ColorRows)
                {
                    var prop = typeof(AxCopilot.Models.CustomThemeColors).GetProperty(row.Property);
                    prop?.SetValue(tempColors, row.Hex);
                }
                _launcher.ApplyTheme(themeKey, tempColors);
            }
            else
            {
                _launcher.ApplyTheme(themeKey, _settings.Settings.Launcher.CustomTheme);
            }
        }

        // 취소/X 닫기 콜백: 파일에 저장된 원본 설정으로 복원
        void RevertCallback()
        {
            _launcher.ApplyTheme(
                _settings.Settings.Launcher.Theme ?? "system",
                _settings.Settings.Launcher.CustomTheme);
        }

        _settingsWindow = new Views.SettingsWindow(vm, PreviewCallback, RevertCallback)
        {
            // 핫키 녹화 중 글로벌 핫키 일시 정지
            SuspendHotkeyCallback = suspend =>
            {
                if (_inputListener != null)
                    _inputListener.SuspendHotkey = suspend;
            }
        };

        // 저장 완료 시 InputListener 핫키 갱신 + 알림 타이머 재시작
        vm.SaveCompleted += (_, _) =>
        {
            if (_inputListener != null && _settings != null)
            {
                _inputListener.UpdateHotkey(_settings.Settings.Hotkey);
                _inputListener.UpdateCaptureHotkey(
                    _settings.Settings.ScreenCapture.GlobalHotkey,
                    _settings.Settings.ScreenCapture.GlobalHotkeyEnabled);
            }
            _worktimeReminder?.RestartTimer();
            _chatWindow?.RefreshFromSavedSettings();
        };

        _settingsWindow.Show();
    }

    // ─── 자동 시작 레지스트리 헬퍼 ──────────────────────────────────────────

    private static System.Drawing.Icon LoadAppIcon()
    {
        // DPI 인식 아이콘 크기 (기본 16 → 고DPI에서 20/24/32)
        var iconSize = System.Windows.Forms.SystemInformation.SmallIconSize;

        // 1) 파일 시스템에서 로드 (개발 환경)
        try
        {
            var exeDir = System.IO.Path.GetDirectoryName(Environment.ProcessPath)
                         ?? AppContext.BaseDirectory;
            var path = System.IO.Path.Combine(exeDir, "Assets", "icon.ico");
            if (System.IO.File.Exists(path))
                return new System.Drawing.Icon(path, iconSize);
        }
        catch { }

        // 2) 내장 리소스에서 로드 (PublishSingleFile 배포)
        try
        {
            var uri = new Uri("pack://application:,,,/Assets/icon.ico");
            var stream = System.Windows.Application.GetResourceStream(uri)?.Stream;
            if (stream != null)
                return new System.Drawing.Icon(stream, iconSize);
        }
        catch { }

        return System.Drawing.SystemIcons.Application;
    }

    private const string AutoRunKey  = @"Software\Microsoft\Windows\CurrentVersion\Run";
    private const string AutoRunName = "AxCopilot";

    private static bool IsAutoStartEnabled()
    {
        try
        {
            using var key = Registry.CurrentUser.OpenSubKey(AutoRunKey, writable: false);
            return key?.GetValue(AutoRunName) != null;
        }
        catch { return false; }
    }

    private static void SetAutoStart(bool enable)
    {
        try
        {
            using var key = Registry.CurrentUser.OpenSubKey(AutoRunKey, writable: true);
            if (key == null) return;

            if (enable)
            {
                var exePath = Environment.ProcessPath
                    ?? System.Diagnostics.Process.GetCurrentProcess().MainModule?.FileName
                    ?? string.Empty;
                if (!string.IsNullOrEmpty(exePath))
                    key.SetValue(AutoRunName, $"\"{exePath}\"");
            }
            else
            {
                key.DeleteValue(AutoRunName, throwOnMissingValue: false);
            }
        }
        catch (Exception ex)
        {
            LogService.Warn($"자동 시작 레지스트리 설정 실패: {ex.Message}");
        }
    }

    protected override void OnExit(ExitEventArgs e)
    {
        _chatWindow?.ForceClose(); // 미리 생성된 ChatWindow 진짜 닫기
        _inputListener?.Dispose();
        _clipboardHistory?.Dispose();
        _fileDialogWatcher?.Dispose();
        _indexService?.Dispose();
        _schedulerService?.Dispose();
        _sessionTracking?.Dispose();
        _worktimeReminder?.Dispose();
        _trayIcon?.Dispose();
        try { _singleInstanceMutex?.ReleaseMutex(); } catch { }
        _singleInstanceMutex?.Dispose();
        LogService.Info("=== AX Copilot 종료 ===");
        base.OnExit(e);
    }

    private void UpdateFileDialogWatcherState()
    {
        if (_fileDialogWatcher == null || _settings == null)
            return;

        if (_settings.Settings.Launcher.EnableFileDialogIntegration)
        {
            _fileDialogWatcher.Start();
            return;
        }

        _fileDialogWatcher.Stop();
    }

    // ─── DI 컨테이너 구성 ─────────────────────────────────────────────────────
    // 기존 수동 생성 인스턴스를 DI 컨테이너에 등록합니다.
    // 향후 ViewModel/Window도 DI에서 resolve할 수 있도록 점진 확장합니다.
    private static void ConfigureDependencyInjection(
        SettingsService settings,
        AgentMemoryService memoryService,
        ChatSessionStateService chatSessionState,
        AppStateService appState)
    {
        ServiceLocator.Configure(services =>
        {
            // ── Singleton: 기존 인스턴스 등록 ────────────────────────────────
            services.AddSingleton<ISettingsService>(settings);
            services.AddSingleton(settings); // 하위 호환: 구체 타입 직접 주입도 허용
            services.AddSingleton<IChatStorageService, ChatStorageService>();
            services.AddSingleton<IAppStateService>(appState);
            services.AddSingleton(appState);
            services.AddSingleton(chatSessionState);
            services.AddSingleton(memoryService);

            // ── Transient: 요청마다 새 인스턴스 ──────────────────────────────
            services.AddTransient<ILlmService>(sp => new LlmService(sp.GetRequiredService<SettingsService>()));
            services.AddSingleton<IModelRouterService>(sp => new ModelRouterService(sp.GetRequiredService<SettingsService>()));
        });

        LogService.Info("DI 컨테이너 초기화 완료");
    }
}