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

import 'package:desktop_multi_window/desktop_multi_window.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hbb/common.dart';
import 'package:flutter_hbb/common/shared_state.dart';
import 'package:flutter_hbb/consts.dart';
import 'package:flutter_hbb/models/state_model.dart';
import 'package:flutter_hbb/desktop/pages/remote_page.dart';
import 'package:flutter_hbb/desktop/widgets/remote_toolbar.dart';
import 'package:flutter_hbb/desktop/widgets/tabbar_widget.dart';
import 'package:flutter_hbb/desktop/widgets/material_mod_popup_menu.dart'
    as mod_menu;
import 'package:flutter_hbb/desktop/widgets/popup_menu.dart';
import 'package:flutter_hbb/utils/multi_window_manager.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:get/get.dart';
import 'package:bot_toast/bot_toast.dart';

import '../../common/widgets/dialog.dart';
import '../../models/platform_model.dart';

class _MenuTheme {
  static const Color blueColor = MyTheme.button;
  // kMinInteractiveDimension
  static const double height = 20.0;
  static const double dividerHeight = 12.0;
}

class ConnectionTabPage extends StatefulWidget {
  final Map<String, dynamic> params;

  const ConnectionTabPage({Key? key, required this.params}) : super(key: key);

  @override
  State<ConnectionTabPage> createState() => _ConnectionTabPageState(params);
}

class _ConnectionTabPageState extends State<ConnectionTabPage> {
  final tabController =
      Get.put(DesktopTabController(tabType: DesktopTabType.remoteScreen));
  final contentKey = UniqueKey();
  static const IconData selectedIcon = Icons.desktop_windows_sharp;
  static const IconData unselectedIcon = Icons.desktop_windows_outlined;

  late ToolbarState _toolbarState;
  String? peerId;

  var connectionMap = RxList<Widget>.empty(growable: true);

  _ConnectionTabPageState(Map<String, dynamic> params) {
    _toolbarState = ToolbarState();
    RemoteCountState.init();
    peerId = params['id'];
    final sessionId = params['session_id'];
    final tabWindowId = params['tab_window_id'];
    if (peerId != null) {
      ConnectionTypeState.init(peerId!);
      tabController.onSelected = (id) {
        final remotePage = tabController.widget(id);
        if (remotePage is RemotePage) {
          final ffi = remotePage.ffi;
          bind.setCurSessionId(sessionId: ffi.sessionId);
        }
        WindowController.fromWindowId(windowId())
            .setTitle(getWindowNameWithId(id));
        UnreadChatCountState.find(id).value = 0;
      };
      tabController.add(TabInfo(
        key: peerId!,
        label: peerId!,
        selectedIcon: selectedIcon,
        unselectedIcon: unselectedIcon,
        onTabCloseButton: () => tabController.closeBy(peerId),
        page: RemotePage(
          key: ValueKey(peerId),
          id: peerId!,
          sessionId: sessionId == null ? null : SessionID(sessionId),
          tabWindowId: tabWindowId,
          password: params['password'],
          toolbarState: _toolbarState,
          tabController: tabController,
          switchUuid: params['switch_uuid'],
          forceRelay: params['forceRelay'],
        ),
      ));
      _update_remote_count();
    }
  }

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

    tabController.onRemoved = (_, id) => onRemoveId(id);

    rustDeskWinManager.setMethodHandler((call, fromWindowId) async {
      print(
          "[Remote Page] call ${call.method} with args ${call.arguments} from window $fromWindowId");

      dynamic returnValue;
      // for simplify, just replace connectionId
      if (call.method == kWindowEventNewRemoteDesktop) {
        final args = jsonDecode(call.arguments);
        final id = args['id'];
        final switchUuid = args['switch_uuid'];
        final sessionId = args['session_id'];
        final tabWindowId = args['tab_window_id'];
        windowOnTop(windowId());
        if (tabController.length == 0) {
          if (Platform.isMacOS && stateGlobal.closeOnFullscreen) {
            stateGlobal.setFullscreen(true);
          }
        }
        ConnectionTypeState.init(id);
        _toolbarState.setShow(
            bind.mainGetUserDefaultOption(key: 'collapse_toolbar') != 'Y');
        tabController.add(TabInfo(
          key: id,
          label: id,
          selectedIcon: selectedIcon,
          unselectedIcon: unselectedIcon,
          onTabCloseButton: () => tabController.closeBy(id),
          page: RemotePage(
            key: ValueKey(id),
            id: id,
            sessionId: sessionId == null ? null : SessionID(sessionId),
            tabWindowId: tabWindowId,
            password: args['password'],
            toolbarState: _toolbarState,
            tabController: tabController,
            switchUuid: switchUuid,
            forceRelay: args['forceRelay'],
          ),
        ));
      } else if (call.method == kWindowDisableGrabKeyboard) {
        stateGlobal.grabKeyboard = false;
      } else if (call.method == "onDestroy") {
        tabController.clear();
      } else if (call.method == kWindowActionRebuild) {
        reloadCurrentWindow();
      } else if (call.method == kWindowEventActiveSession) {
        final jumpOk = tabController.jumpToByKey(call.arguments);
        if (jumpOk) {
          windowOnTop(windowId());
        }
        return jumpOk;
      } else if (call.method == kWindowEventGetRemoteList) {
        return tabController.state.value.tabs
            .map((e) => e.key)
            .toList()
            .join(',');
      } else if (call.method == kWindowEventGetSessionIdList) {
        return tabController.state.value.tabs
            .map((e) => '${e.key},${(e.page as RemotePage).ffi.sessionId}')
            .toList()
            .join(';');
      } else if (call.method == kWindowEventGetCachedSessionData) {
        // Ready to show new window and close old tab.
        final peerId = call.arguments;
        try {
          final remotePage = tabController.state.value.tabs
              .firstWhere((tab) => tab.key == peerId)
              .page as RemotePage;
          returnValue = remotePage.ffi.ffiModel.cachedPeerData.toString();
        } catch (e) {
          debugPrint('Failed to get cached session data: $e');
        }
        if (returnValue != null) {
          closeSessionOnDispose[peerId] = false;
          tabController.closeBy(peerId);
        }
      }
      _update_remote_count();
      return returnValue;
    });
    Future.delayed(Duration.zero, () {
      restoreWindowPosition(
        WindowType.RemoteDesktop,
        windowId: windowId(),
        peerId: tabController.state.value.tabs.isEmpty
            ? null
            : tabController.state.value.tabs[0].key,
      );
    });
  }

  @override
  void dispose() {
    super.dispose();
    _toolbarState.save();
  }

  @override
  Widget build(BuildContext context) {
    final tabWidget = Obx(
      () => Container(
        decoration: BoxDecoration(
          border: Border.all(
              color: MyTheme.color(context).border!,
              width: stateGlobal.windowBorderWidth.value),
        ),
        child: Scaffold(
          backgroundColor: Theme.of(context).colorScheme.background,
          body: DesktopTab(
            controller: tabController,
            onWindowCloseButton: handleWindowCloseButton,
            tail: const AddButton().paddingOnly(left: 10),
            pageViewBuilder: (pageView) => pageView,
            labelGetter: DesktopTab.labelGetterAlias,
            tabBuilder: (key, icon, label, themeConf) => Obx(() {
              final connectionType = ConnectionTypeState.find(key);
              if (!connectionType.isValid()) {
                return Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    icon,
                    label,
                  ],
                );
              } else {
                bool secure =
                    connectionType.secure.value == ConnectionType.strSecure;
                bool direct =
                    connectionType.direct.value == ConnectionType.strDirect;
                String msgConn;
                if (secure && direct) {
                  msgConn = translate("Direct and encrypted connection");
                } else if (secure && !direct) {
                  msgConn = translate("Relayed and encrypted connection");
                } else if (!secure && direct) {
                  msgConn = translate("Direct and unencrypted connection");
                } else {
                  msgConn = translate("Relayed and unencrypted connection");
                }
                var msgFingerprint = '${translate('Fingerprint')}:\n';
                var fingerprint = FingerprintState.find(key).value;
                if (fingerprint.isEmpty) {
                  fingerprint = 'N/A';
                }
                if (fingerprint.length > 5 * 8) {
                  var first = fingerprint.substring(0, 39);
                  var second = fingerprint.substring(40);
                  msgFingerprint += '$first\n$second';
                } else {
                  msgFingerprint += fingerprint;
                }

                final tab = Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    icon,
                    Tooltip(
                      message: '$msgConn\n$msgFingerprint',
                      child: SvgPicture.asset(
                        'assets/${connectionType.secure.value}${connectionType.direct.value}.svg',
                        width: themeConf.iconSize,
                        height: themeConf.iconSize,
                      ).paddingOnly(right: 5),
                    ),
                    label,
                    unreadMessageCountBuilder(UnreadChatCountState.find(key))
                        .marginOnly(left: 4),
                  ],
                );

                return Listener(
                  onPointerDown: (e) {
                    if (e.kind != ui.PointerDeviceKind.mouse) {
                      return;
                    }
                    final remotePage = tabController.state.value.tabs
                        .firstWhere((tab) => tab.key == key)
                        .page as RemotePage;
                    if (remotePage.ffi.ffiModel.pi.isSet.isTrue &&
                        e.buttons == 2) {
                      showRightMenu(
                        (CancelFunc cancelFunc) {
                          return _tabMenuBuilder(key, cancelFunc);
                        },
                        target: e.position,
                      );
                    }
                  },
                  child: tab,
                );
              }
            }),
          ),
        ),
      ),
    );
    return Platform.isMacOS || kUseCompatibleUiMode
        ? tabWidget
        : Obx(() => SubWindowDragToResizeArea(
              key: contentKey,
              child: tabWidget,
              // Specially configured for a better resize area and remote control.
              childPadding: kDragToResizeAreaPadding,
              resizeEdgeSize: stateGlobal.resizeEdgeSize.value,
              windowId: stateGlobal.windowId,
            ));
  }

  // Note: Some dup code to ../widgets/remote_toolbar
  Widget _tabMenuBuilder(String key, CancelFunc cancelFunc) {
    final List<MenuEntryBase<String>> menu = [];
    const EdgeInsets padding = EdgeInsets.only(left: 8.0, right: 5.0);
    final remotePage = tabController.state.value.tabs
        .firstWhere((tab) => tab.key == key)
        .page as RemotePage;
    final ffi = remotePage.ffi;
    final pi = ffi.ffiModel.pi;
    final perms = ffi.ffiModel.permissions;
    final sessionId = ffi.sessionId;
    menu.addAll([
      MenuEntryButton<String>(
        childBuilder: (TextStyle? style) => Obx(() => Text(
              translate(
                  _toolbarState.show.isTrue ? 'Hide Toolbar' : 'Show Toolbar'),
              style: style,
            )),
        proc: () {
          _toolbarState.switchShow();
          cancelFunc();
        },
        padding: padding,
      ),
    ]);

    if (tabController.state.value.tabs.length > 1) {
      final splitAction = MenuEntryButton<String>(
        childBuilder: (TextStyle? style) => Text(
          translate('Move tab to new window'),
          style: style,
        ),
        proc: () async {
          await DesktopMultiWindow.invokeMethod(kMainWindowId,
              kWindowEventMoveTabToNewWindow, '${windowId()},$key,$sessionId');
          cancelFunc();
        },
        padding: padding,
      );
      menu.insert(1, splitAction);
    }

    if (perms['restart'] != false &&
        (pi.platform == kPeerPlatformLinux ||
            pi.platform == kPeerPlatformWindows ||
            pi.platform == kPeerPlatformMacOS)) {
      menu.add(MenuEntryButton<String>(
        childBuilder: (TextStyle? style) => Text(
          translate('Restart Remote Device'),
          style: style,
        ),
        proc: () => showRestartRemoteDevice(
            pi, peerId ?? '', sessionId, ffi.dialogManager),
        padding: padding,
        dismissOnClicked: true,
        dismissCallback: cancelFunc,
      ));
    }

    if (perms['keyboard'] != false && !ffi.ffiModel.viewOnly) {
      menu.add(RemoteMenuEntry.insertLock(sessionId, padding,
          dismissFunc: cancelFunc));

      if (pi.platform == kPeerPlatformLinux || pi.sasEnabled) {
        menu.add(RemoteMenuEntry.insertCtrlAltDel(sessionId, padding,
            dismissFunc: cancelFunc));
      }
    }

    menu.addAll([
      MenuEntryDivider<String>(),
      MenuEntryButton<String>(
        childBuilder: (TextStyle? style) => Text(
          translate('Copy Fingerprint'),
          style: style,
        ),
        proc: () => onCopyFingerprint(FingerprintState.find(key).value),
        padding: padding,
        dismissOnClicked: true,
        dismissCallback: cancelFunc,
      ),
      MenuEntryButton<String>(
        childBuilder: (TextStyle? style) => Text(
          translate('Close'),
          style: style,
        ),
        proc: () {
          tabController.closeBy(key);
          cancelFunc();
        },
        padding: padding,
      )
    ]);

    return mod_menu.PopupMenu<String>(
      items: menu
          .map((entry) => entry.build(
              context,
              const MenuConfig(
                commonColor: _MenuTheme.blueColor,
                height: _MenuTheme.height,
                dividerHeight: _MenuTheme.dividerHeight,
              )))
          .expand((i) => i)
          .toList(),
    );
  }

  void onRemoveId(String id) async {
    if (tabController.state.value.tabs.isEmpty) {
      await WindowController.fromWindowId(windowId()).close();
      stateGlobal.setFullscreen(false, procWnd: false);
    }
    ConnectionTypeState.delete(id);
    _update_remote_count();
  }

  int windowId() {
    return widget.params["windowId"];
  }

  Future<bool> handleWindowCloseButton() async {
    final connLength = tabController.length;
    if (connLength <= 1) {
      tabController.clear();
      return true;
    } else {
      final opt = "enable-confirm-closing-tabs";
      final bool res;
      if (!option2bool(opt, bind.mainGetLocalOption(key: opt))) {
        res = true;
      } else {
        res = await closeConfirmDialog();
      }
      if (res) {
        tabController.clear();
      }
      return res;
    }
  }

  _update_remote_count() =>
      RemoteCountState.find().value = tabController.length;
}