import 'dart:convert';
import 'dart:ui' as ui;
import 'dart:async';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_hbb/common/widgets/toolbar.dart';
import 'package:flutter_hbb/models/chat_model.dart';
import 'package:flutter_hbb/models/state_model.dart';
import 'package:flutter_hbb/consts.dart';
import 'package:flutter_hbb/utils/multi_window_manager.dart';
import 'package:flutter_hbb/plugin/widgets/desc_ui.dart';
import 'package:flutter_hbb/plugin/common.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:get/get.dart';
import 'package:provider/provider.dart';
import 'package:debounce_throttle/debounce_throttle.dart';
import 'package:desktop_multi_window/desktop_multi_window.dart';
import 'package:window_size/window_size.dart' as window_size;

import '../../common.dart';
import '../../common/widgets/dialog.dart';
import '../../models/model.dart';
import '../../models/platform_model.dart';
import '../../common/shared_state.dart';
import './popup_menu.dart';
import './kb_layout_type_chooser.dart';

const _kKeyLegacyMode = 'legacy';
const _kKeyMapMode = 'map';
const _kKeyTranslateMode = 'translate';

class ToolbarState {
  final kStoreKey = 'remoteMenubarState';
  late RxBool show;
  late RxBool _pin;

  ToolbarState() {
    final s = bind.getLocalFlutterConfig(k: kStoreKey);
    if (s.isEmpty) {
      _initSet(false, false);
      return;
    }

    try {
      final m = jsonDecode(s);
      if (m == null) {
        _initSet(false, false);
      } else {
        _initSet(m['pin'] ?? false, m['pin'] ?? false);
      }
    } catch (e) {
      debugPrint('Failed to decode toolbar state ${e.toString()}');
      _initSet(false, false);
    }
  }

  _initSet(bool s, bool p) {
    // Show remubar when connection is established.
    show =
        RxBool(bind.mainGetUserDefaultOption(key: 'collapse_toolbar') != 'Y');
    _pin = RxBool(p);
  }

  bool get pin => _pin.value;

  switchShow() async {
    show.value = !show.value;
  }

  setShow(bool v) async {
    if (show.value != v) {
      show.value = v;
    }
  }

  switchPin() async {
    _pin.value = !_pin.value;
    // Save everytime changed, as this func will not be called frequently
    await _savePin();
  }

  setPin(bool v) async {
    if (_pin.value != v) {
      _pin.value = v;
      // Save everytime changed, as this func will not be called frequently
      await _savePin();
    }
  }

  _savePin() async {
    bind.setLocalFlutterConfig(
        k: kStoreKey, v: jsonEncode({'pin': _pin.value}));
  }

  save() async {
    await _savePin();
  }
}

class _ToolbarTheme {
  static const Color blueColor = MyTheme.button;
  static const Color hoverBlueColor = MyTheme.accent;
  static const Color redColor = Colors.redAccent;
  static const Color hoverRedColor = Colors.red;
  // kMinInteractiveDimension
  static const double height = 20.0;
  static const double dividerHeight = 12.0;

  static const double buttonSize = 32;
  static const double buttonHMargin = 3;
  static const double buttonVMargin = 6;
  static const double iconRadius = 8;
  static const double elevation = 3;

  static const Color bordDark = MyTheme.bordDark;
  static const Color bordLight = MyTheme.bordLight;

  static const Color dividerDark = MyTheme.dividerDark;
  static const Color dividerLight = MyTheme.dividerLight;
  static double dividerSpaceToAction = Platform.isWindows ? 8 : 14;

  static double menuBorderRadius = Platform.isWindows ? 5.0 : 7.0;
  static EdgeInsets menuPadding = Platform.isWindows
      ? EdgeInsets.fromLTRB(4, 12, 4, 12)
      : EdgeInsets.fromLTRB(6, 14, 6, 14);
  static const double menuButtonBorderRadius = 3.0;

  static final defaultMenuStyle = MenuStyle(
    side: MaterialStateProperty.all(BorderSide(
      width: 1,
      color: MyTheme.currentThemeMode() == ThemeMode.light
          ? _ToolbarTheme.bordLight
          : _ToolbarTheme.bordDark,
    )),
    shape: MaterialStatePropertyAll(RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(_ToolbarTheme.menuBorderRadius))),
    padding: MaterialStateProperty.all(_ToolbarTheme.menuPadding),
  );
  static final defaultMenuButtonStyle = ButtonStyle(
    backgroundColor: MaterialStatePropertyAll(Colors.transparent),
    padding: MaterialStatePropertyAll(EdgeInsets.zero),
    overlayColor: MaterialStatePropertyAll(Colors.transparent),
  );
}

typedef DismissFunc = void Function();

class RemoteMenuEntry {
  static MenuEntryRadios<String> viewStyle(
    String remoteId,
    FFI ffi,
    EdgeInsets padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
    RxString? rxViewStyle,
  }) {
    return MenuEntryRadios<String>(
      text: translate('Ratio'),
      optionsGetter: () => [
        MenuEntryRadioOption(
          text: translate('Scale original'),
          value: kRemoteViewStyleOriginal,
          dismissOnClicked: true,
          dismissCallback: dismissCallback,
        ),
        MenuEntryRadioOption(
          text: translate('Scale adaptive'),
          value: kRemoteViewStyleAdaptive,
          dismissOnClicked: true,
          dismissCallback: dismissCallback,
        ),
      ],
      curOptionGetter: () async {
        // null means peer id is not found, which there's no need to care about
        final viewStyle =
            await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
        if (rxViewStyle != null) {
          rxViewStyle.value = viewStyle;
        }
        return viewStyle;
      },
      optionSetter: (String oldValue, String newValue) async {
        await bind.sessionSetViewStyle(
            sessionId: ffi.sessionId, value: newValue);
        if (rxViewStyle != null) {
          rxViewStyle.value = newValue;
        }
        ffi.canvasModel.updateViewStyle();
        if (dismissFunc != null) {
          dismissFunc();
        }
      },
      padding: padding,
      dismissOnClicked: true,
      dismissCallback: dismissCallback,
    );
  }

  static MenuEntrySwitch2<String> showRemoteCursor(
    String remoteId,
    SessionID sessionId,
    EdgeInsets padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
  }) {
    final state = ShowRemoteCursorState.find(remoteId);
    final optKey = 'show-remote-cursor';
    return MenuEntrySwitch2<String>(
      switchType: SwitchType.scheckbox,
      text: translate('Show remote cursor'),
      getter: () {
        return state;
      },
      setter: (bool v) async {
        await bind.sessionToggleOption(sessionId: sessionId, value: optKey);
        state.value =
            bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: optKey);
        if (dismissFunc != null) {
          dismissFunc();
        }
      },
      padding: padding,
      dismissOnClicked: true,
      dismissCallback: dismissCallback,
    );
  }

  static MenuEntrySwitch<String> disableClipboard(
    SessionID sessionId,
    EdgeInsets? padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
  }) {
    return createSwitchMenuEntry(
      sessionId,
      'Disable clipboard',
      'disable-clipboard',
      padding,
      true,
      dismissCallback: dismissCallback,
    );
  }

  static MenuEntrySwitch<String> createSwitchMenuEntry(
    SessionID sessionId,
    String text,
    String option,
    EdgeInsets? padding,
    bool dismissOnClicked, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
  }) {
    return MenuEntrySwitch<String>(
      switchType: SwitchType.scheckbox,
      text: translate(text),
      getter: () async {
        return bind.sessionGetToggleOptionSync(
            sessionId: sessionId, arg: option);
      },
      setter: (bool v) async {
        await bind.sessionToggleOption(sessionId: sessionId, value: option);
        if (dismissFunc != null) {
          dismissFunc();
        }
      },
      padding: padding,
      dismissOnClicked: dismissOnClicked,
      dismissCallback: dismissCallback,
    );
  }

  static MenuEntryButton<String> insertLock(
    SessionID sessionId,
    EdgeInsets? padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
  }) {
    return MenuEntryButton<String>(
      childBuilder: (TextStyle? style) => Text(
        translate('Insert Lock'),
        style: style,
      ),
      proc: () {
        bind.sessionLockScreen(sessionId: sessionId);
        if (dismissFunc != null) {
          dismissFunc();
        }
      },
      padding: padding,
      dismissOnClicked: true,
      dismissCallback: dismissCallback,
    );
  }

  static insertCtrlAltDel(
    SessionID sessionId,
    EdgeInsets? padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
  }) {
    return MenuEntryButton<String>(
      childBuilder: (TextStyle? style) => Text(
        '${translate("Insert")} Ctrl + Alt + Del',
        style: style,
      ),
      proc: () {
        bind.sessionCtrlAltDel(sessionId: sessionId);
        if (dismissFunc != null) {
          dismissFunc();
        }
      },
      padding: padding,
      dismissOnClicked: true,
      dismissCallback: dismissCallback,
    );
  }
}

class RemoteToolbar extends StatefulWidget {
  final String id;
  final FFI ffi;
  final ToolbarState state;
  final Function(Function(bool)) onEnterOrLeaveImageSetter;
  final Function() onEnterOrLeaveImageCleaner;

  RemoteToolbar({
    Key? key,
    required this.id,
    required this.ffi,
    required this.state,
    required this.onEnterOrLeaveImageSetter,
    required this.onEnterOrLeaveImageCleaner,
  }) : super(key: key);

  @override
  State<RemoteToolbar> createState() => _RemoteToolbarState();
}

class _RemoteToolbarState extends State<RemoteToolbar> {
  late Debouncer<int> _debouncerHide;
  bool _isCursorOverImage = false;
  final _fractionX = 0.5.obs;
  final _dragging = false.obs;

  int get windowId => stateGlobal.windowId;

  bool get isFullscreen => stateGlobal.fullscreen;
  void _setFullscreen(bool v) {
    stateGlobal.setFullscreen(v);
    setState(() {});
  }

  RxBool get show => widget.state.show;
  bool get pin => widget.state.pin;

  PeerInfo get pi => widget.ffi.ffiModel.pi;
  FfiModel get ffiModel => widget.ffi.ffiModel;

  triggerAutoHide() => _debouncerHide.value = _debouncerHide.value + 1;

  @override
  initState() {
    super.initState();

    Future.delayed(Duration.zero, () async {
      _fractionX.value = double.tryParse(await bind.sessionGetOption(
                  sessionId: widget.ffi.sessionId,
                  arg: 'remote-menubar-drag-x') ??
              '0.5') ??
          0.5;
    });

    _debouncerHide = Debouncer<int>(
      Duration(milliseconds: 5000),
      onChanged: _debouncerHideProc,
      initialValue: 0,
    );

    widget.onEnterOrLeaveImageSetter((enter) {
      if (enter) {
        triggerAutoHide();
        _isCursorOverImage = true;
      } else {
        _isCursorOverImage = false;
      }
    });
  }

  _debouncerHideProc(int v) {
    if (!pin && show.isTrue && _isCursorOverImage && _dragging.isFalse) {
      show.value = false;
    }
  }

  @override
  dispose() {
    super.dispose();

    widget.onEnterOrLeaveImageCleaner();
  }

  @override
  Widget build(BuildContext context) {
    // No need to use future builder here.
    return Align(
      alignment: Alignment.topCenter,
      child: Obx(() => show.value
          ? _buildToolbar(context)
          : _buildDraggableShowHide(context)),
    );
  }

  Widget _buildDraggableShowHide(BuildContext context) {
    return Obx(() {
      if (show.isTrue && _dragging.isFalse) {
        triggerAutoHide();
      }
      return Align(
        alignment: FractionalOffset(_fractionX.value, 0),
        child: Offstage(
          offstage: _dragging.isTrue,
          child: Material(
            elevation: _ToolbarTheme.elevation,
            shadowColor: MyTheme.color(context).shadow,
            child: _DraggableShowHide(
              sessionId: widget.ffi.sessionId,
              dragging: _dragging,
              fractionX: _fractionX,
              show: show,
            ),
          ),
        ),
      );
    });
  }

  Widget _buildToolbar(BuildContext context) {
    final List<Widget> toolbarItems = [];
    if (!isWebDesktop) {
      toolbarItems.add(_PinMenu(state: widget.state));
      toolbarItems.add(
          _FullscreenMenu(state: widget.state, setFullscreen: _setFullscreen));
      toolbarItems.add(_MobileActionMenu(ffi: widget.ffi));
    }

    if (PrivacyModeState.find(widget.id).isFalse && pi.displays.length > 1) {
      toolbarItems.add(
        bind.mainGetUserDefaultOption(key: 'show_monitors_toolbar') == 'Y'
            ? _MultiMonitorMenu(id: widget.id, ffi: widget.ffi)
            : _MonitorMenu(id: widget.id, ffi: widget.ffi),
      );
    }

    toolbarItems
        .add(_ControlMenu(id: widget.id, ffi: widget.ffi, state: widget.state));
    toolbarItems.add(_DisplayMenu(
      id: widget.id,
      ffi: widget.ffi,
      state: widget.state,
      setFullscreen: _setFullscreen,
    ));
    toolbarItems.add(_KeyboardMenu(id: widget.id, ffi: widget.ffi));
    if (!isWeb) {
      toolbarItems.add(_ChatMenu(id: widget.id, ffi: widget.ffi));
      toolbarItems.add(_VoiceCallMenu(id: widget.id, ffi: widget.ffi));
    }
    toolbarItems.add(_RecordMenu(ffi: widget.ffi));
    toolbarItems.add(_CloseMenu(id: widget.id, ffi: widget.ffi));
    return Column(
      mainAxisSize: MainAxisSize.min,
      children: [
        Material(
          elevation: _ToolbarTheme.elevation,
          shadowColor: MyTheme.color(context).shadow,
          borderRadius: BorderRadius.all(Radius.circular(4.0)),
          color: Theme.of(context)
              .menuBarTheme
              .style
              ?.backgroundColor
              ?.resolve(MaterialState.values.toSet()),
          child: SingleChildScrollView(
            scrollDirection: Axis.horizontal,
            child: Theme(
              data: themeData(),
              child: Row(
                children: [
                  SizedBox(width: _ToolbarTheme.buttonHMargin * 2),
                  ...toolbarItems,
                  SizedBox(width: _ToolbarTheme.buttonHMargin * 2)
                ],
              ),
            ),
          ),
        ),
        _buildDraggableShowHide(context),
      ],
    );
  }

  ThemeData themeData() {
    return Theme.of(context).copyWith(
      menuButtonTheme: MenuButtonThemeData(
        style: ButtonStyle(
          minimumSize: MaterialStatePropertyAll(Size(64, 32)),
          textStyle: MaterialStatePropertyAll(
            TextStyle(fontWeight: FontWeight.normal),
          ),
          shape: MaterialStatePropertyAll(RoundedRectangleBorder(
              borderRadius:
                  BorderRadius.circular(_ToolbarTheme.menuButtonBorderRadius))),
        ),
      ),
      dividerTheme: DividerThemeData(
        space: _ToolbarTheme.dividerSpaceToAction,
        color: MyTheme.currentThemeMode() == ThemeMode.light
            ? _ToolbarTheme.dividerLight
            : _ToolbarTheme.dividerDark,
      ),
      menuBarTheme: MenuBarThemeData(
          style: MenuStyle(
        padding: MaterialStatePropertyAll(EdgeInsets.zero),
        elevation: MaterialStatePropertyAll(0),
        shape: MaterialStatePropertyAll(BeveledRectangleBorder()),
      ).copyWith(
              backgroundColor:
                  Theme.of(context).menuBarTheme.style?.backgroundColor)),
    );
  }
}

class _PinMenu extends StatelessWidget {
  final ToolbarState state;
  const _PinMenu({Key? key, required this.state}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Obx(
      () => _IconMenuButton(
        assetName: state.pin ? "assets/pinned.svg" : "assets/unpinned.svg",
        tooltip: state.pin ? 'Unpin Toolbar' : 'Pin Toolbar',
        onPressed: state.switchPin,
        color: state.pin ? _ToolbarTheme.blueColor : Colors.grey[800]!,
        hoverColor:
            state.pin ? _ToolbarTheme.hoverBlueColor : Colors.grey[850]!,
      ),
    );
  }
}

class _FullscreenMenu extends StatelessWidget {
  final ToolbarState state;
  final Function(bool) setFullscreen;
  bool get isFullscreen => stateGlobal.fullscreen;
  const _FullscreenMenu(
      {Key? key, required this.state, required this.setFullscreen})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return _IconMenuButton(
      assetName:
          isFullscreen ? "assets/fullscreen_exit.svg" : "assets/fullscreen.svg",
      tooltip: isFullscreen ? 'Exit Fullscreen' : 'Fullscreen',
      onPressed: () => setFullscreen(!isFullscreen),
      color: _ToolbarTheme.blueColor,
      hoverColor: _ToolbarTheme.hoverBlueColor,
    );
  }
}

class _MobileActionMenu extends StatelessWidget {
  final FFI ffi;
  const _MobileActionMenu({Key? key, required this.ffi}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    if (!ffi.ffiModel.isPeerAndroid) return Offstage();
    return _IconMenuButton(
      assetName: 'assets/actions_mobile.svg',
      tooltip: 'Mobile Actions',
      onPressed: () => ffi.dialogManager.toggleMobileActionsOverlay(ffi: ffi),
      color: _ToolbarTheme.blueColor,
      hoverColor: _ToolbarTheme.hoverBlueColor,
    );
  }
}

class _MonitorMenu extends StatelessWidget {
  final String id;
  final FFI ffi;
  const _MonitorMenu({Key? key, required this.id, required this.ffi})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return _IconSubmenuButton(
        tooltip: 'Select Monitor',
        icon: icon(),
        ffi: ffi,
        color: _ToolbarTheme.blueColor,
        hoverColor: _ToolbarTheme.hoverBlueColor,
        menuStyle: MenuStyle(
            padding:
                MaterialStatePropertyAll(EdgeInsets.symmetric(horizontal: 6))),
        menuChildren: [Row(children: displays(context))]);
  }

  icon() {
    final pi = ffi.ffiModel.pi;
    return Stack(
      alignment: Alignment.center,
      children: [
        SvgPicture.asset(
          "assets/screen.svg",
          color: Colors.white,
        ),
        Obx(() {
          RxInt display = CurrentDisplayState.find(id);
          return Text(
            '${display.value + 1}/${pi.displays.length}',
            style: const TextStyle(
              color: _ToolbarTheme.blueColor,
              fontSize: 8,
              fontWeight: FontWeight.bold,
            ),
          );
        }),
      ],
    );
  }

  List<Widget> displays(BuildContext context) {
    final List<Widget> rowChildren = [];
    final pi = ffi.ffiModel.pi;
    for (int i = 0; i < pi.displays.length; i++) {
      rowChildren.add(_IconMenuButton(
        topLevel: false,
        color: _ToolbarTheme.blueColor,
        hoverColor: _ToolbarTheme.hoverBlueColor,
        tooltip: "",
        hMargin: 6,
        vMargin: 12,
        icon: Container(
          alignment: AlignmentDirectional.center,
          constraints: const BoxConstraints(minHeight: _ToolbarTheme.height),
          child: Stack(
            alignment: Alignment.center,
            children: [
              SvgPicture.asset(
                "assets/screen.svg",
                color: Colors.white,
              ),
              Text(
                (i + 1).toString(),
                style: TextStyle(
                  color: _ToolbarTheme.blueColor,
                  fontSize: 12,
                  fontWeight: FontWeight.bold,
                ),
              ),
            ],
          ),
        ),
        onPressed: () {
          _menuDismissCallback(ffi);
          RxInt display = CurrentDisplayState.find(id);
          if (display.value != i) {
            bind.sessionSwitchDisplay(sessionId: ffi.sessionId, value: i);
          }
        },
      ));
    }
    return rowChildren;
  }
}

class _ControlMenu extends StatelessWidget {
  final String id;
  final FFI ffi;
  final ToolbarState state;
  _ControlMenu(
      {Key? key, required this.id, required this.ffi, required this.state})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return _IconSubmenuButton(
        tooltip: 'Control Actions',
        svg: "assets/actions.svg",
        color: _ToolbarTheme.blueColor,
        hoverColor: _ToolbarTheme.hoverBlueColor,
        ffi: ffi,
        menuChildren: toolbarControls(context, id, ffi).map((e) {
          if (e.divider) {
            return Divider();
          } else {
            return MenuButton(
                child: e.child,
                onPressed: e.onPressed,
                ffi: ffi,
                trailingIcon: e.trailingIcon);
          }
        }).toList());
  }
}

class ScreenAdjustor {
  final String id;
  final FFI ffi;
  final VoidCallback cbExitFullscreen;
  window_size.Screen? _screen;

  ScreenAdjustor({
    required this.id,
    required this.ffi,
    required this.cbExitFullscreen,
  });

  bool get isFullscreen => stateGlobal.fullscreen;
  int get windowId => stateGlobal.windowId;

  adjustWindow() {
    return futureBuilder(
        future: isWindowCanBeAdjusted(),
        hasData: (data) {
          final visible = data as bool;
          if (!visible) return Offstage();
          return Column(
            children: [
              MenuButton(
                  child: Text(translate('Adjust Window')),
                  onPressed: doAdjustWindow,
                  ffi: ffi),
              Divider(),
            ],
          );
        });
  }

  doAdjustWindow() async {
    await updateScreen();
    if (_screen != null) {
      cbExitFullscreen();
      double scale = _screen!.scaleFactor;
      final wndRect = await WindowController.fromWindowId(windowId).getFrame();
      final mediaSize = MediaQueryData.fromWindow(ui.window).size;
      // On windows, wndRect is equal to GetWindowRect and mediaSize is equal to GetClientRect.
      // https://stackoverflow.com/a/7561083
      double magicWidth =
          wndRect.right - wndRect.left - mediaSize.width * scale;
      double magicHeight =
          wndRect.bottom - wndRect.top - mediaSize.height * scale;

      final canvasModel = ffi.canvasModel;
      final width = (canvasModel.getDisplayWidth() * canvasModel.scale +
                  CanvasModel.leftToEdge +
                  CanvasModel.rightToEdge) *
              scale +
          magicWidth;
      final height = (canvasModel.getDisplayHeight() * canvasModel.scale +
                  CanvasModel.topToEdge +
                  CanvasModel.bottomToEdge) *
              scale +
          magicHeight;
      double left = wndRect.left + (wndRect.width - width) / 2;
      double top = wndRect.top + (wndRect.height - height) / 2;

      Rect frameRect = _screen!.frame;
      if (!isFullscreen) {
        frameRect = _screen!.visibleFrame;
      }
      if (left < frameRect.left) {
        left = frameRect.left;
      }
      if (top < frameRect.top) {
        top = frameRect.top;
      }
      if ((left + width) > frameRect.right) {
        left = frameRect.right - width;
      }
      if ((top + height) > frameRect.bottom) {
        top = frameRect.bottom - height;
      }
      await WindowController.fromWindowId(windowId)
          .setFrame(Rect.fromLTWH(left, top, width, height));
    }
  }

  updateScreen() async {
    final v = await rustDeskWinManager.call(
        WindowType.Main, kWindowGetWindowInfo, '');
    final String valueStr = v;
    if (valueStr.isEmpty) {
      _screen = null;
    } else {
      final screenMap = jsonDecode(valueStr);
      _screen = window_size.Screen(
          Rect.fromLTRB(screenMap['frame']['l'], screenMap['frame']['t'],
              screenMap['frame']['r'], screenMap['frame']['b']),
          Rect.fromLTRB(
              screenMap['visibleFrame']['l'],
              screenMap['visibleFrame']['t'],
              screenMap['visibleFrame']['r'],
              screenMap['visibleFrame']['b']),
          screenMap['scaleFactor']);
    }
  }

  Future<bool> isWindowCanBeAdjusted() async {
    final viewStyle =
        await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
    if (viewStyle != kRemoteViewStyleOriginal) {
      return false;
    }
    final remoteCount = RemoteCountState.find().value;
    if (remoteCount != 1) {
      return false;
    }
    if (_screen == null) {
      return false;
    }
    final scale = kIgnoreDpi ? 1.0 : _screen!.scaleFactor;
    double selfWidth = _screen!.visibleFrame.width;
    double selfHeight = _screen!.visibleFrame.height;
    if (isFullscreen) {
      selfWidth = _screen!.frame.width;
      selfHeight = _screen!.frame.height;
    }

    final canvasModel = ffi.canvasModel;
    final displayWidth = canvasModel.getDisplayWidth();
    final displayHeight = canvasModel.getDisplayHeight();
    final requiredWidth =
        CanvasModel.leftToEdge + displayWidth + CanvasModel.rightToEdge;
    final requiredHeight =
        CanvasModel.topToEdge + displayHeight + CanvasModel.bottomToEdge;
    return selfWidth > (requiredWidth * scale) &&
        selfHeight > (requiredHeight * scale);
  }
}

class _DisplayMenu extends StatefulWidget {
  final String id;
  final FFI ffi;
  final ToolbarState state;
  final Function(bool) setFullscreen;
  final Widget pluginItem;
  _DisplayMenu(
      {Key? key,
      required this.id,
      required this.ffi,
      required this.state,
      required this.setFullscreen})
      : pluginItem = LocationItem.createLocationItem(
          id,
          ffi,
          kLocationClientRemoteToolbarDisplay,
          true,
        ),
        super(key: key);

  @override
  State<_DisplayMenu> createState() => _DisplayMenuState();
}

class _DisplayMenuState extends State<_DisplayMenu> {
  late final ScreenAdjustor _screenAdjustor = ScreenAdjustor(
    id: widget.id,
    ffi: widget.ffi,
    cbExitFullscreen: () => widget.setFullscreen(false),
  );

  bool get isFullscreen => stateGlobal.fullscreen;
  int get windowId => stateGlobal.windowId;
  Map<String, bool> get perms => widget.ffi.ffiModel.permissions;
  PeerInfo get pi => widget.ffi.ffiModel.pi;
  FfiModel get ffiModel => widget.ffi.ffiModel;
  FFI get ffi => widget.ffi;
  String get id => widget.id;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    _screenAdjustor.updateScreen();
    return _IconSubmenuButton(
        tooltip: 'Display Settings',
        svg: "assets/display.svg",
        ffi: widget.ffi,
        color: _ToolbarTheme.blueColor,
        hoverColor: _ToolbarTheme.hoverBlueColor,
        menuChildren: [
          _screenAdjustor.adjustWindow(),
          viewStyle(),
          scrollStyle(),
          imageQuality(),
          codec(),
          _ResolutionsMenu(
            id: widget.id,
            ffi: widget.ffi,
            screenAdjustor: _screenAdjustor,
          ),
          Divider(),
          toggles(),
          widget.pluginItem,
        ]);
  }

  viewStyle() {
    return futureBuilder(
        future: toolbarViewStyle(context, widget.id, widget.ffi),
        hasData: (data) {
          final v = data as List<TRadioMenu<String>>;
          return Column(children: [
            ...v
                .map((e) => RdoMenuButton<String>(
                    value: e.value,
                    groupValue: e.groupValue,
                    onChanged: e.onChanged,
                    child: e.child,
                    ffi: ffi))
                .toList(),
            Divider(),
          ]);
        });
  }

  scrollStyle() {
    return futureBuilder(future: () async {
      final viewStyle =
          await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
      final visible = viewStyle == kRemoteViewStyleOriginal;
      final scrollStyle =
          await bind.sessionGetScrollStyle(sessionId: ffi.sessionId) ?? '';
      return {'visible': visible, 'scrollStyle': scrollStyle};
    }(), hasData: (data) {
      final visible = data['visible'] as bool;
      if (!visible) return Offstage();
      final groupValue = data['scrollStyle'] as String;
      onChange(String? value) async {
        if (value == null) return;
        await bind.sessionSetScrollStyle(
            sessionId: ffi.sessionId, value: value);
        widget.ffi.canvasModel.updateScrollStyle();
      }

      final enabled = widget.ffi.canvasModel.imageOverflow.value;
      return Column(children: [
        RdoMenuButton<String>(
          child: Text(translate('ScrollAuto')),
          value: kRemoteScrollStyleAuto,
          groupValue: groupValue,
          onChanged: enabled ? (value) => onChange(value) : null,
          ffi: widget.ffi,
        ),
        RdoMenuButton<String>(
          child: Text(translate('Scrollbar')),
          value: kRemoteScrollStyleBar,
          groupValue: groupValue,
          onChanged: enabled ? (value) => onChange(value) : null,
          ffi: widget.ffi,
        ),
        Divider(),
      ]);
    });
  }

  imageQuality() {
    return futureBuilder(
        future: toolbarImageQuality(context, widget.id, widget.ffi),
        hasData: (data) {
          final v = data as List<TRadioMenu<String>>;
          return _SubmenuButton(
            ffi: widget.ffi,
            child: Text(translate('Image Quality')),
            menuChildren: v
                .map((e) => RdoMenuButton<String>(
                    value: e.value,
                    groupValue: e.groupValue,
                    onChanged: e.onChanged,
                    child: e.child,
                    ffi: ffi))
                .toList(),
          );
        });
  }

  codec() {
    return futureBuilder(
        future: toolbarCodec(context, id, ffi),
        hasData: (data) {
          final v = data as List<TRadioMenu<String>>;
          if (v.isEmpty) return Offstage();

          return _SubmenuButton(
              ffi: widget.ffi,
              child: Text(translate('Codec')),
              menuChildren: v
                  .map((e) => RdoMenuButton(
                      value: e.value,
                      groupValue: e.groupValue,
                      onChanged: e.onChanged,
                      child: e.child,
                      ffi: ffi))
                  .toList());
        });
  }

  toggles() {
    return futureBuilder(
        future: toolbarDisplayToggle(context, id, ffi),
        hasData: (data) {
          final v = data as List<TToggleMenu>;
          if (v.isEmpty) return Offstage();
          return Column(
              children: v
                  .map((e) => CkbMenuButton(
                      value: e.value,
                      onChanged: e.onChanged,
                      child: e.child,
                      ffi: ffi))
                  .toList());
        });
  }
}

class _ResolutionsMenu extends StatefulWidget {
  final String id;
  final FFI ffi;
  final ScreenAdjustor screenAdjustor;

  _ResolutionsMenu({
    Key? key,
    required this.id,
    required this.ffi,
    required this.screenAdjustor,
  }) : super(key: key);

  @override
  State<_ResolutionsMenu> createState() => _ResolutionsMenuState();
}

const double _kCustomResolutionEditingWidth = 42;
const _kCustomResolutionValue = 'custom';

class _ResolutionsMenuState extends State<_ResolutionsMenu> {
  String _groupValue = '';
  Resolution? _localResolution;

  late final TextEditingController _customWidth =
      TextEditingController(text: display.width.toString());
  late final TextEditingController _customHeight =
      TextEditingController(text: display.height.toString());

  FFI get ffi => widget.ffi;
  PeerInfo get pi => widget.ffi.ffiModel.pi;
  FfiModel get ffiModel => widget.ffi.ffiModel;
  Display get display => ffiModel.display;
  List<Resolution> get resolutions => pi.resolutions;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    final isVirtualDisplay = display.isVirtualDisplayResolution;
    final visible =
        ffiModel.keyboard && (isVirtualDisplay || resolutions.length > 1);
    if (!visible) return Offstage();
    _getLocalResolution();
    final showOriginalBtn =
        display.isOriginalResolutionSet && !display.isOriginalResolution;
    final showFitLocalBtn = !_isRemoteResolutionFitLocal();
    _setGroupValue();
    return _SubmenuButton(
      ffi: widget.ffi,
      menuChildren: <Widget>[
            _OriginalResolutionMenuButton(showOriginalBtn),
            _FitLocalResolutionMenuButton(showFitLocalBtn),
            _customResolutionMenuButton(isVirtualDisplay),
            _menuDivider(showOriginalBtn, showFitLocalBtn, isVirtualDisplay),
          ] +
          _supportedResolutionMenuButtons(),
      child: Text(translate("Resolution")),
    );
  }

  _setGroupValue() {
    final lastGroupValue =
        stateGlobal.getLastResolutionGroupValue(widget.id, pi.currentDisplay);
    if (lastGroupValue == _kCustomResolutionValue) {
      _groupValue = _kCustomResolutionValue;
    } else {
      _groupValue = '${display.width}x${display.height}';
    }
  }

  _menuDivider(
      bool showOriginalBtn, bool showFitLocalBtn, bool isVirtualDisplay) {
    return Offstage(
      offstage: !(showOriginalBtn || showFitLocalBtn || isVirtualDisplay),
      child: Divider(),
    );
  }

  _getLocalResolution() {
    _localResolution = null;
    final String currentDisplay = bind.mainGetCurrentDisplay();
    if (currentDisplay.isNotEmpty) {
      try {
        final display = json.decode(currentDisplay);
        if (display['w'] != null && display['h'] != null) {
          _localResolution = Resolution(display['w'], display['h']);
        }
      } catch (e) {
        debugPrint('Failed to decode $currentDisplay, $e');
      }
    }
  }

  _onChanged(String? value) async {
    stateGlobal.setLastResolutionGroupValue(
        widget.id, pi.currentDisplay, value);
    if (value == null) return;

    int? w;
    int? h;
    if (value == _kCustomResolutionValue) {
      w = int.tryParse(_customWidth.text);
      h = int.tryParse(_customHeight.text);
    } else {
      final list = value.split('x');
      if (list.length == 2) {
        w = int.tryParse(list[0]);
        h = int.tryParse(list[1]);
      }
    }

    if (w != null && h != null) {
      if (w != display.width || h != display.height) {
        await _changeResolution(w, h);
      }
    }
  }

  _changeResolution(int w, int h) async {
    await bind.sessionChangeResolution(
      sessionId: ffi.sessionId,
      display: pi.currentDisplay,
      width: w,
      height: h,
    );
    Future.delayed(Duration(seconds: 3), () async {
      final display = ffiModel.display;
      if (w == display.width && h == display.height) {
        if (await widget.screenAdjustor.isWindowCanBeAdjusted()) {
          widget.screenAdjustor.doAdjustWindow();
        }
      }
    });
  }

  Widget _OriginalResolutionMenuButton(bool showOriginalBtn) {
    return Offstage(
      offstage: !showOriginalBtn,
      child: MenuButton(
        onPressed: () =>
            _changeResolution(display.originalWidth, display.originalHeight),
        ffi: widget.ffi,
        child: Text(
            '${translate('resolution_original_tip')} ${display.originalWidth}x${display.originalHeight}'),
      ),
    );
  }

  Widget _FitLocalResolutionMenuButton(bool showFitLocalBtn) {
    return Offstage(
      offstage: !showFitLocalBtn,
      child: MenuButton(
        onPressed: () {
          final resolution = _getBestFitResolution();
          if (resolution != null) {
            _changeResolution(resolution.width, resolution.height);
          }
        },
        ffi: widget.ffi,
        child: Text(
            '${translate('resolution_fit_local_tip')} ${_localResolution?.width ?? 0}x${_localResolution?.height ?? 0}'),
      ),
    );
  }

  Widget _customResolutionMenuButton(isVirtualDisplay) {
    return Offstage(
      offstage: !isVirtualDisplay,
      child: RdoMenuButton(
        value: _kCustomResolutionValue,
        groupValue: _groupValue,
        onChanged: _onChanged,
        ffi: widget.ffi,
        child: Row(
          children: [
            Text('${translate('resolution_custom_tip')} '),
            SizedBox(
              width: _kCustomResolutionEditingWidth,
              child: _resolutionInput(_customWidth),
            ),
            Text(' x '),
            SizedBox(
              width: _kCustomResolutionEditingWidth,
              child: _resolutionInput(_customHeight),
            ),
          ],
        ),
      ),
    );
  }

  TextField _resolutionInput(TextEditingController controller) {
    return TextField(
      decoration: InputDecoration(
        border: InputBorder.none,
        isDense: true,
        contentPadding: EdgeInsets.fromLTRB(3, 3, 3, 3),
      ),
      keyboardType: TextInputType.number,
      inputFormatters: <TextInputFormatter>[
        FilteringTextInputFormatter.digitsOnly,
        LengthLimitingTextInputFormatter(4),
        FilteringTextInputFormatter.allow(RegExp(r'[0-9]')),
      ],
      controller: controller,
    );
  }

  List<Widget> _supportedResolutionMenuButtons() => resolutions
      .map((e) => RdoMenuButton(
          value: '${e.width}x${e.height}',
          groupValue: _groupValue,
          onChanged: _onChanged,
          ffi: widget.ffi,
          child: Text('${e.width}x${e.height}')))
      .toList();

  Resolution? _getBestFitResolution() {
    if (_localResolution == null) {
      return null;
    }

    if (display.isVirtualDisplayResolution) {
      return _localResolution!;
    }

    for (final r in resolutions) {
      if (r.width == _localResolution!.width &&
          r.height == _localResolution!.height) {
        return r;
      }
    }

    return null;
  }

  bool _isRemoteResolutionFitLocal() {
    if (_localResolution == null) {
      return true;
    }
    final bestFitResolution = _getBestFitResolution();
    if (bestFitResolution == null) {
      return true;
    }
    return bestFitResolution.width == display.width &&
        bestFitResolution.height == display.height;
  }
}

class _KeyboardMenu extends StatelessWidget {
  final String id;
  final FFI ffi;
  _KeyboardMenu({
    Key? key,
    required this.id,
    required this.ffi,
  }) : super(key: key);

  PeerInfo get pi => ffi.ffiModel.pi;

  @override
  Widget build(BuildContext context) {
    var ffiModel = Provider.of<FfiModel>(context);
    if (!ffiModel.keyboard) return Offstage();
    String? modeOnly;
    if (stateGlobal.grabKeyboard) {
      if (bind.sessionIsKeyboardModeSupported(
          sessionId: ffi.sessionId, mode: _kKeyMapMode)) {
        bind.sessionSetKeyboardMode(
            sessionId: ffi.sessionId, value: _kKeyMapMode);
        modeOnly = _kKeyMapMode;
      } else if (bind.sessionIsKeyboardModeSupported(
          sessionId: ffi.sessionId, mode: _kKeyLegacyMode)) {
        bind.sessionSetKeyboardMode(
            sessionId: ffi.sessionId, value: _kKeyLegacyMode);
        modeOnly = _kKeyLegacyMode;
      }
    }
    return _IconSubmenuButton(
        tooltip: 'Keyboard Settings',
        svg: "assets/keyboard.svg",
        ffi: ffi,
        color: _ToolbarTheme.blueColor,
        hoverColor: _ToolbarTheme.hoverBlueColor,
        menuChildren: [
          mode(modeOnly),
          localKeyboardType(),
          Divider(),
          view_mode(),
        ]);
  }

  mode(String? modeOnly) {
    return futureBuilder(future: () async {
      return await bind.sessionGetKeyboardMode(sessionId: ffi.sessionId) ??
          _kKeyLegacyMode;
    }(), hasData: (data) {
      final groupValue = data as String;
      List<KeyboardModeMenu> modes = [
        KeyboardModeMenu(key: _kKeyLegacyMode, menu: 'Legacy mode'),
        KeyboardModeMenu(key: _kKeyMapMode, menu: 'Map mode'),
        KeyboardModeMenu(key: _kKeyTranslateMode, menu: 'Translate mode'),
      ];
      List<RdoMenuButton> list = [];
      final enabled = !ffi.ffiModel.viewOnly;
      onChanged(String? value) async {
        if (value == null) return;
        await bind.sessionSetKeyboardMode(
            sessionId: ffi.sessionId, value: value);
      }

      for (KeyboardModeMenu mode in modes) {
        if (modeOnly != null && mode.key != modeOnly) {
          continue;
        } else if (!bind.sessionIsKeyboardModeSupported(
            sessionId: ffi.sessionId, mode: mode.key)) {
          continue;
        }

        if (pi.is_wayland && mode.key != _kKeyMapMode) {
          continue;
        }

        var text = translate(mode.menu);
        if (mode.key == _kKeyTranslateMode) {
          text = '$text beta';
        }
        list.add(RdoMenuButton<String>(
          child: Text(text),
          value: mode.key,
          groupValue: groupValue,
          onChanged: enabled ? onChanged : null,
          ffi: ffi,
        ));
      }
      return Column(children: list);
    });
  }

  localKeyboardType() {
    final localPlatform = getLocalPlatformForKBLayoutType(pi.platform);
    final visible = localPlatform != '';
    if (!visible) return Offstage();
    final enabled = !ffi.ffiModel.viewOnly;
    return Column(
      children: [
        Divider(),
        MenuButton(
          child: Text(
              '${translate('Local keyboard type')}: ${KBLayoutType.value}'),
          trailingIcon: const Icon(Icons.settings),
          ffi: ffi,
          onPressed: enabled
              ? () => showKBLayoutTypeChooser(localPlatform, ffi.dialogManager)
              : null,
        )
      ],
    );
  }

  view_mode() {
    final ffiModel = ffi.ffiModel;
    final enabled = version_cmp(pi.version, '1.2.0') >= 0 && ffiModel.keyboard;
    return CkbMenuButton(
        value: ffiModel.viewOnly,
        onChanged: enabled
            ? (value) async {
                if (value == null) return;
                await bind.sessionToggleOption(
                    sessionId: ffi.sessionId, value: 'view-only');
                ffiModel.setViewOnly(id, value);
              }
            : null,
        ffi: ffi,
        child: Text(translate('View Mode')));
  }
}

class _ChatMenu extends StatefulWidget {
  final String id;
  final FFI ffi;
  _ChatMenu({
    Key? key,
    required this.id,
    required this.ffi,
  }) : super(key: key);

  @override
  State<_ChatMenu> createState() => _ChatMenuState();
}

class _ChatMenuState extends State<_ChatMenu> {
  // Using in StatelessWidget got `Looking up a deactivated widget's ancestor is unsafe`.
  final chatButtonKey = GlobalKey();

  @override
  Widget build(BuildContext context) {
    return _IconSubmenuButton(
        tooltip: 'Chat',
        key: chatButtonKey,
        svg: 'assets/chat.svg',
        ffi: widget.ffi,
        color: _ToolbarTheme.blueColor,
        hoverColor: _ToolbarTheme.hoverBlueColor,
        menuChildren: [textChat(), voiceCall()]);
  }

  textChat() {
    return MenuButton(
        child: Text(translate('Text chat')),
        ffi: widget.ffi,
        onPressed: () {
          RenderBox? renderBox =
              chatButtonKey.currentContext?.findRenderObject() as RenderBox?;

          Offset? initPos;
          if (renderBox != null) {
            final pos = renderBox.localToGlobal(Offset.zero);
            initPos = Offset(pos.dx, pos.dy + _ToolbarTheme.dividerHeight);
          }

          widget.ffi.chatModel.changeCurrentKey(
              MessageKey(widget.ffi.id, ChatModel.clientModeID));
          widget.ffi.chatModel.toggleChatOverlay(chatInitPos: initPos);
        });
  }

  voiceCall() {
    return MenuButton(
      child: Text(translate('Voice call')),
      ffi: widget.ffi,
      onPressed: () =>
          bind.sessionRequestVoiceCall(sessionId: widget.ffi.sessionId),
    );
  }
}

class _VoiceCallMenu extends StatelessWidget {
  final String id;
  final FFI ffi;
  _VoiceCallMenu({
    Key? key,
    required this.id,
    required this.ffi,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Obx(
      () {
        final String tooltip;
        final String icon;
        switch (ffi.chatModel.voiceCallStatus.value) {
          case VoiceCallStatus.waitingForResponse:
            tooltip = "Waiting";
            icon = "assets/call_wait.svg";
            break;
          case VoiceCallStatus.connected:
            tooltip = "Disconnect";
            icon = "assets/call_end.svg";
            break;
          default:
            return Offstage();
        }
        return _IconMenuButton(
            assetName: icon,
            tooltip: tooltip,
            onPressed: () =>
                bind.sessionCloseVoiceCall(sessionId: ffi.sessionId),
            color: _ToolbarTheme.redColor,
            hoverColor: _ToolbarTheme.hoverRedColor);
      },
    );
  }
}

class _RecordMenu extends StatelessWidget {
  final FFI ffi;
  const _RecordMenu({Key? key, required this.ffi}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    var ffiModel = Provider.of<FfiModel>(context);
    var recordingModel = Provider.of<RecordingModel>(context);
    final visible =
        recordingModel.start || ffiModel.permissions['recording'] != false;
    if (!visible) return Offstage();
    final menuButton = _IconMenuButton(
      assetName: 'assets/rec.svg',
      tooltip: recordingModel.start
          ? 'Stop session recording'
          : 'Start session recording',
      onPressed: () => recordingModel.toggle(),
      color: recordingModel.start
          ? _ToolbarTheme.redColor
          : _ToolbarTheme.blueColor,
      hoverColor: recordingModel.start
          ? _ToolbarTheme.hoverRedColor
          : _ToolbarTheme.hoverBlueColor,
    );
    return ChangeNotifierProvider.value(
        value: ffi.qualityMonitorModel,
        child: Consumer<QualityMonitorModel>(
            builder: (context, model, child) => Offstage(
                  // If already started, AV1->Hidden/Stop, Other->Start, same as actual
                  offstage: model.data.codecFormat == 'AV1',
                  child: menuButton,
                )));
  }
}

class _CloseMenu extends StatelessWidget {
  final String id;
  final FFI ffi;
  const _CloseMenu({Key? key, required this.id, required this.ffi})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return _IconMenuButton(
      assetName: 'assets/close.svg',
      tooltip: 'Close',
      onPressed: () => clientClose(ffi.sessionId, ffi.dialogManager),
      color: _ToolbarTheme.redColor,
      hoverColor: _ToolbarTheme.hoverRedColor,
    );
  }
}

class _IconMenuButton extends StatefulWidget {
  final String? assetName;
  final Widget? icon;
  final String? tooltip;
  final Color color;
  final Color hoverColor;
  final VoidCallback? onPressed;
  final double? hMargin;
  final double? vMargin;
  final bool topLevel;
  const _IconMenuButton({
    Key? key,
    this.assetName,
    this.icon,
    this.tooltip,
    required this.color,
    required this.hoverColor,
    required this.onPressed,
    this.hMargin,
    this.vMargin,
    this.topLevel = true,
  }) : super(key: key);

  @override
  State<_IconMenuButton> createState() => _IconMenuButtonState();
}

class _IconMenuButtonState extends State<_IconMenuButton> {
  bool hover = false;

  @override
  Widget build(BuildContext context) {
    assert(widget.assetName != null || widget.icon != null);
    final icon = widget.icon ??
        SvgPicture.asset(
          widget.assetName!,
          color: Colors.white,
          width: _ToolbarTheme.buttonSize,
          height: _ToolbarTheme.buttonSize,
        );
    final button = SizedBox(
      width: _ToolbarTheme.buttonSize,
      height: _ToolbarTheme.buttonSize,
      child: MenuItemButton(
        style: ButtonStyle(
            backgroundColor: MaterialStatePropertyAll(Colors.transparent),
            padding: MaterialStatePropertyAll(EdgeInsets.zero),
            overlayColor: MaterialStatePropertyAll(Colors.transparent)),
        onHover: (value) => setState(() {
          hover = value;
        }),
        onPressed: widget.onPressed,
        child: Material(
            type: MaterialType.transparency,
            child: Ink(
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(_ToolbarTheme.iconRadius),
                  color: hover ? widget.hoverColor : widget.color,
                ),
                child: icon)),
      ),
    ).marginSymmetric(
        horizontal: widget.hMargin ?? _ToolbarTheme.buttonHMargin,
        vertical: widget.vMargin ?? _ToolbarTheme.buttonVMargin);
    if (widget.topLevel) {
      return MenuBar(children: [button]);
    } else {
      return button;
    }
  }
}

class _IconSubmenuButton extends StatefulWidget {
  final String tooltip;
  final String? svg;
  final Widget? icon;
  final Color color;
  final Color hoverColor;
  final List<Widget> menuChildren;
  final MenuStyle? menuStyle;
  final FFI ffi;

  _IconSubmenuButton(
      {Key? key,
      this.svg,
      this.icon,
      required this.tooltip,
      required this.color,
      required this.hoverColor,
      required this.menuChildren,
      required this.ffi,
      this.menuStyle})
      : super(key: key);

  @override
  State<_IconSubmenuButton> createState() => _IconSubmenuButtonState();
}

class _IconSubmenuButtonState extends State<_IconSubmenuButton> {
  bool hover = false;

  @override
  Widget build(BuildContext context) {
    assert(widget.svg != null || widget.icon != null);
    final icon = widget.icon ??
        SvgPicture.asset(
          widget.svg!,
          color: Colors.white,
          width: _ToolbarTheme.buttonSize,
          height: _ToolbarTheme.buttonSize,
        );
    final button = SizedBox(
        width: _ToolbarTheme.buttonSize,
        height: _ToolbarTheme.buttonSize,
        child: SubmenuButton(
            menuStyle: widget.menuStyle ?? _ToolbarTheme.defaultMenuStyle,
            style: _ToolbarTheme.defaultMenuButtonStyle,
            onHover: (value) => setState(() {
                  hover = value;
                }),
            child: Material(
                type: MaterialType.transparency,
                child: Ink(
                    decoration: BoxDecoration(
                      borderRadius:
                          BorderRadius.circular(_ToolbarTheme.iconRadius),
                      color: hover ? widget.hoverColor : widget.color,
                    ),
                    child: icon)),
            menuChildren: widget.menuChildren
                .map((e) => _buildPointerTrackWidget(e, widget.ffi))
                .toList()));
    return MenuBar(children: [
      button.marginSymmetric(
          horizontal: _ToolbarTheme.buttonHMargin,
          vertical: _ToolbarTheme.buttonVMargin)
    ]);
  }
}

class _SubmenuButton extends StatelessWidget {
  final List<Widget> menuChildren;
  final Widget? child;
  final FFI ffi;
  const _SubmenuButton({
    Key? key,
    required this.menuChildren,
    required this.child,
    required this.ffi,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return SubmenuButton(
      key: key,
      child: child,
      menuChildren:
          menuChildren.map((e) => _buildPointerTrackWidget(e, ffi)).toList(),
      menuStyle: _ToolbarTheme.defaultMenuStyle,
    );
  }
}

class MenuButton extends StatelessWidget {
  final VoidCallback? onPressed;
  final Widget? trailingIcon;
  final Widget? child;
  final FFI ffi;
  MenuButton(
      {Key? key,
      this.onPressed,
      this.trailingIcon,
      required this.child,
      required this.ffi})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MenuItemButton(
        key: key,
        onPressed: onPressed != null
            ? () {
                _menuDismissCallback(ffi);
                onPressed?.call();
              }
            : null,
        trailingIcon: trailingIcon,
        child: child);
  }
}

class CkbMenuButton extends StatelessWidget {
  final bool? value;
  final ValueChanged<bool?>? onChanged;
  final Widget? child;
  final FFI ffi;
  const CkbMenuButton(
      {Key? key,
      required this.value,
      required this.onChanged,
      required this.child,
      required this.ffi})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return CheckboxMenuButton(
      key: key,
      value: value,
      child: child,
      onChanged: onChanged != null
          ? (bool? value) {
              _menuDismissCallback(ffi);
              onChanged?.call(value);
            }
          : null,
    );
  }
}

class RdoMenuButton<T> extends StatelessWidget {
  final T value;
  final T? groupValue;
  final ValueChanged<T?>? onChanged;
  final Widget? child;
  final FFI ffi;
  const RdoMenuButton({
    Key? key,
    required this.value,
    required this.groupValue,
    required this.child,
    required this.ffi,
    this.onChanged,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return RadioMenuButton(
      value: value,
      groupValue: groupValue,
      child: child,
      onChanged: onChanged != null
          ? (T? value) {
              _menuDismissCallback(ffi);
              onChanged?.call(value);
            }
          : null,
    );
  }
}

class _DraggableShowHide extends StatefulWidget {
  final SessionID sessionId;
  final RxDouble fractionX;
  final RxBool dragging;
  final RxBool show;
  const _DraggableShowHide({
    Key? key,
    required this.sessionId,
    required this.fractionX,
    required this.dragging,
    required this.show,
  }) : super(key: key);

  @override
  State<_DraggableShowHide> createState() => _DraggableShowHideState();
}

class _DraggableShowHideState extends State<_DraggableShowHide> {
  Offset position = Offset.zero;
  Size size = Size.zero;
  double left = 0.0;
  double right = 1.0;

  @override
  initState() {
    super.initState();

    final confLeft = double.tryParse(
        bind.mainGetLocalOption(key: 'remote-menubar-drag-left'));
    if (confLeft == null) {
      bind.mainSetLocalOption(
          key: 'remote-menubar-drag-left', value: left.toString());
    } else {
      left = confLeft;
    }
    final confRight = double.tryParse(
        bind.mainGetLocalOption(key: 'remote-menubar-drag-right'));
    if (confRight == null) {
      bind.mainSetLocalOption(
          key: 'remote-menubar-drag-right', value: right.toString());
    } else {
      right = confRight;
    }
  }

  Widget _buildDraggable(BuildContext context) {
    return Draggable(
      axis: Axis.horizontal,
      child: Icon(
        Icons.drag_indicator,
        size: 20,
        color: MyTheme.color(context).drag_indicator,
      ),
      feedback: widget,
      onDragStarted: (() {
        final RenderObject? renderObj = context.findRenderObject();
        if (renderObj != null) {
          final RenderBox renderBox = renderObj as RenderBox;
          size = renderBox.size;
          position = renderBox.localToGlobal(Offset.zero);
        }
        widget.dragging.value = true;
      }),
      onDragEnd: (details) {
        final mediaSize = MediaQueryData.fromWindow(ui.window).size;
        widget.fractionX.value +=
            (details.offset.dx - position.dx) / (mediaSize.width - size.width);
        if (widget.fractionX.value < left) {
          widget.fractionX.value = left;
        }
        if (widget.fractionX.value > right) {
          widget.fractionX.value = right;
        }
        bind.sessionPeerOption(
          sessionId: widget.sessionId,
          name: 'remote-menubar-drag-x',
          value: widget.fractionX.value.toString(),
        );
        widget.dragging.value = false;
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    final ButtonStyle buttonStyle = ButtonStyle(
      minimumSize: MaterialStateProperty.all(const Size(0, 0)),
      padding: MaterialStateProperty.all(EdgeInsets.zero),
    );
    final child = Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        _buildDraggable(context),
        TextButton(
          onPressed: () => setState(() {
            widget.show.value = !widget.show.value;
          }),
          child: Obx((() => Icon(
                widget.show.isTrue ? Icons.expand_less : Icons.expand_more,
                size: 20,
              ))),
        ),
      ],
    );
    return TextButtonTheme(
      data: TextButtonThemeData(style: buttonStyle),
      child: Container(
        decoration: BoxDecoration(
          color: Theme.of(context)
              .menuBarTheme
              .style
              ?.backgroundColor
              ?.resolve(MaterialState.values.toSet()),
          borderRadius: BorderRadius.vertical(
            bottom: Radius.circular(5),
          ),
        ),
        child: SizedBox(
          height: 20,
          child: child,
        ),
      ),
    );
  }
}

class KeyboardModeMenu {
  final String key;
  final String menu;

  KeyboardModeMenu({required this.key, required this.menu});
}

_menuDismissCallback(FFI ffi) => ffi.inputModel.refreshMousePos();

Widget _buildPointerTrackWidget(Widget child, FFI ffi) {
  return Listener(
    onPointerHover: (PointerHoverEvent e) =>
        ffi.inputModel.lastMousePos = e.position,
    child: MouseRegion(
      child: child,
    ),
  );
}

class _MultiMonitorMenu extends StatelessWidget {
  final String id;
  final FFI ffi;

  const _MultiMonitorMenu({
    Key? key,
    required this.id,
    required this.ffi,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final List<Widget> rowChildren = [];
    final pi = ffi.ffiModel.pi;

    for (int i = 0; i < pi.displays.length; i++) {
      rowChildren.add(
        Obx(() {
          RxInt display = CurrentDisplayState.find(id);
          return _IconMenuButton(
            topLevel: false,
            color: i == display.value
                ? _ToolbarTheme.blueColor
                : Colors.grey[800]!,
            hoverColor: i == display.value
                ? _ToolbarTheme.hoverBlueColor
                : Colors.grey[850]!,
            icon: Container(
              alignment: AlignmentDirectional.center,
              constraints:
                  const BoxConstraints(minHeight: _ToolbarTheme.height),
              child: Stack(
                alignment: Alignment.center,
                children: [
                  SvgPicture.asset(
                    "assets/screen.svg",
                    color: Colors.white,
                  ),
                  Obx(
                    () => Text(
                      (i + 1).toString(),
                      style: TextStyle(
                        color: i == display.value
                            ? _ToolbarTheme.blueColor
                            : Colors.grey[800]!,
                        fontSize: 12,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                ],
              ),
            ),
            onPressed: () {
              if (display.value != i) {
                bind.sessionSwitchDisplay(sessionId: ffi.sessionId, value: i);
              }
            },
          );
        }),
      );
    }
    return Row(children: rowChildren);
  }
}
