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

import 'package:auto_size_text/auto_size_text.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_hbb/common.dart';
import 'package:flutter_hbb/common/widgets/custom_password.dart';
import 'package:flutter_hbb/consts.dart';
import 'package:flutter_hbb/desktop/pages/connection_page.dart';
import 'package:flutter_hbb/desktop/pages/desktop_setting_page.dart';
import 'package:flutter_hbb/desktop/pages/desktop_tab_page.dart';
import 'package:flutter_hbb/desktop/widgets/scroll_wrapper.dart';
import 'package:flutter_hbb/models/platform_model.dart';
import 'package:flutter_hbb/models/server_model.dart';
import 'package:flutter_hbb/utils/multi_window_manager.dart';
import 'package:get/get.dart';
import 'package:provider/provider.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:window_size/window_size.dart' as window_size;

import '../widgets/button.dart';

class DesktopHomePage extends StatefulWidget {
  const DesktopHomePage({Key? key}) : super(key: key);

  @override
  State<DesktopHomePage> createState() => _DesktopHomePageState();
}

const borderColor = Color(0xFF2F65BA);

class _DesktopHomePageState extends State<DesktopHomePage>
    with AutomaticKeepAliveClientMixin {
  final _leftPaneScrollController = ScrollController();

  @override
  bool get wantKeepAlive => true;
  var updateUrl = '';
  var systemError = '';
  StreamSubscription? _uniLinksSubscription;
  var svcStopped = false.obs;
  var watchIsCanScreenRecording = false;
  var watchIsProcessTrust = false;
  var watchIsInputMonitoring = false;
  var watchIsCanRecordAudio = false;
  Timer? _updateTimer;

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return Row(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        buildLeftPane(context),
        const VerticalDivider(width: 1),
        Expanded(
          child: buildRightPane(context),
        ),
      ],
    );
  }

  Widget buildLeftPane(BuildContext context) {
    return ChangeNotifierProvider.value(
      value: gFFI.serverModel,
      child: Container(
        width: 200,
        color: Theme.of(context).colorScheme.background,
        child: DesktopScrollWrapper(
          scrollController: _leftPaneScrollController,
          child: SingleChildScrollView(
            controller: _leftPaneScrollController,
            physics: DraggableNeverScrollableScrollPhysics(),
            child: Column(
              children: [
                buildTip(context),
                buildIDBoard(context),
                buildPasswordBoard(context),
                FutureBuilder<Widget>(
                  future: buildHelpCards(),
                  builder: (_, data) {
                    if (data.hasData) {
                      return data.data!;
                    } else {
                      return const Offstage();
                    }
                  },
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  buildRightPane(BuildContext context) {
    return Container(
      color: Theme.of(context).scaffoldBackgroundColor,
      child: ConnectionPage(),
    );
  }

  buildIDBoard(BuildContext context) {
    final model = gFFI.serverModel;
    return Container(
      margin: const EdgeInsets.only(left: 20, right: 11),
      height: 57,
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.baseline,
        textBaseline: TextBaseline.alphabetic,
        children: [
          Container(
            width: 2,
            decoration: const BoxDecoration(color: MyTheme.accent),
          ).marginOnly(top: 5),
          Expanded(
            child: Padding(
              padding: const EdgeInsets.only(left: 7),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Container(
                    height: 25,
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          translate("ID"),
                          style: TextStyle(
                              fontSize: 14,
                              color: Theme.of(context)
                                  .textTheme
                                  .titleLarge
                                  ?.color
                                  ?.withOpacity(0.5)),
                        ).marginOnly(top: 5),
                        buildPopupMenu(context)
                      ],
                    ),
                  ),
                  Flexible(
                    child: GestureDetector(
                      onDoubleTap: () {
                        Clipboard.setData(
                            ClipboardData(text: model.serverId.text));
                        showToast(translate("Copied"));
                      },
                      child: TextFormField(
                        controller: model.serverId,
                        readOnly: true,
                        decoration: InputDecoration(
                          border: InputBorder.none,
                          contentPadding: EdgeInsets.only(top: 10, bottom: 10),
                        ),
                        style: TextStyle(
                          fontSize: 22,
                        ),
                      ),
                    ),
                  )
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget buildPopupMenu(BuildContext context) {
    final textColor = Theme.of(context).textTheme.titleLarge?.color;
    RxBool hover = false.obs;
    return InkWell(
      onTap: DesktopTabPage.onAddSetting,
      child: Obx(
        () => CircleAvatar(
          radius: 15,
          backgroundColor: hover.value
              ? Theme.of(context).scaffoldBackgroundColor
              : Theme.of(context).colorScheme.background,
          child: Icon(
            Icons.more_vert_outlined,
            size: 20,
            color: hover.value ? textColor : textColor?.withOpacity(0.5),
          ),
        ),
      ),
      onHover: (value) => hover.value = value,
    );
  }

  buildPasswordBoard(BuildContext context) {
    final model = gFFI.serverModel;
    RxBool refreshHover = false.obs;
    RxBool editHover = false.obs;
    final textColor = Theme.of(context).textTheme.titleLarge?.color;
    return Container(
      margin: EdgeInsets.only(left: 20.0, right: 16, top: 13, bottom: 13),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.baseline,
        textBaseline: TextBaseline.alphabetic,
        children: [
          Container(
            width: 2,
            height: 52,
            decoration: BoxDecoration(color: MyTheme.accent),
          ),
          Expanded(
            child: Padding(
              padding: const EdgeInsets.only(left: 7),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  AutoSizeText(
                    translate("One-time Password"),
                    style: TextStyle(
                        fontSize: 14, color: textColor?.withOpacity(0.5)),
                    maxLines: 1,
                  ),
                  Row(
                    children: [
                      Expanded(
                        child: GestureDetector(
                          onDoubleTap: () {
                            if (model.verificationMethod !=
                                kUsePermanentPassword) {
                              Clipboard.setData(
                                  ClipboardData(text: model.serverPasswd.text));
                              showToast(translate("Copied"));
                            }
                          },
                          child: TextFormField(
                            controller: model.serverPasswd,
                            readOnly: true,
                            decoration: InputDecoration(
                              border: InputBorder.none,
                              contentPadding:
                                  EdgeInsets.only(top: 14, bottom: 10),
                            ),
                            style: TextStyle(fontSize: 15),
                          ),
                        ),
                      ),
                      InkWell(
                        child: Obx(
                          () => Icon(
                            Icons.refresh,
                            color: refreshHover.value
                                ? textColor
                                : Color(0xFFDDDDDD),
                            size: 22,
                          ).marginOnly(right: 8, top: 4),
                        ),
                        onTap: () => bind.mainUpdateTemporaryPassword(),
                        onHover: (value) => refreshHover.value = value,
                      ),
                      InkWell(
                        child: Obx(
                          () => Icon(
                            Icons.edit,
                            color:
                                editHover.value ? textColor : Color(0xFFDDDDDD),
                            size: 22,
                          ).marginOnly(right: 8, top: 4),
                        ),
                        onTap: () => DesktopSettingPage.switch2page(1),
                        onHover: (value) => editHover.value = value,
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  buildTip(BuildContext context) {
    return Padding(
      padding:
          const EdgeInsets.only(left: 20.0, right: 16, top: 16.0, bottom: 5),
      child: Column(
        mainAxisAlignment: MainAxisAlignment.start,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            translate("Your Desktop"),
            style: Theme.of(context).textTheme.titleLarge,
            // style: TextStyle(
            //     // color: MyTheme.color(context).text,
            //     fontWeight: FontWeight.normal,
            //     fontSize: 19),
          ),
          SizedBox(
            height: 10.0,
          ),
          Text(
            translate("desk_tip"),
            overflow: TextOverflow.clip,
            style: Theme.of(context).textTheme.bodySmall,
          )
        ],
      ),
    );
  }

  Future<Widget> buildHelpCards() async {
    if (updateUrl.isNotEmpty) {
      return buildInstallCard(
          "Status",
          "There is a newer version of ${bind.mainGetAppNameSync()} ${bind.mainGetNewVersion()} available.",
          "Click to download", () async {
        final Uri url = Uri.parse('https://rustdesk.com');
        await launchUrl(url);
      });
    }
    if (systemError.isNotEmpty) {
      return buildInstallCard("", systemError, "", () {});
    }
    if (Platform.isWindows) {
      if (!bind.mainIsInstalled()) {
        return buildInstallCard(
            "", "install_tip", "Install", bind.mainGotoInstall);
      } else if (bind.mainIsInstalledLowerVersion()) {
        return buildInstallCard("Status", "Your installation is lower version.",
            "Click to upgrade", bind.mainUpdateMe);
      }
    } else if (Platform.isMacOS) {
      if (!bind.mainIsCanScreenRecording(prompt: false)) {
        return buildInstallCard("Permissions", "config_screen", "Configure",
            () async {
          bind.mainIsCanScreenRecording(prompt: true);
          watchIsCanScreenRecording = true;
        }, help: 'Help', link: translate("doc_mac_permission"));
      } else if (!bind.mainIsProcessTrusted(prompt: false)) {
        return buildInstallCard("Permissions", "config_acc", "Configure",
            () async {
          bind.mainIsProcessTrusted(prompt: true);
          watchIsProcessTrust = true;
        }, help: 'Help', link: translate("doc_mac_permission"));
      } else if (!bind.mainIsCanInputMonitoring(prompt: false)) {
        return buildInstallCard("Permissions", "config_input", "Configure",
            () async {
          bind.mainIsCanInputMonitoring(prompt: true);
          watchIsInputMonitoring = true;
        }, help: 'Help', link: translate("doc_mac_permission"));
      } else if (!svcStopped.value &&
          bind.mainIsInstalled() &&
          !bind.mainIsInstalledDaemon(prompt: false)) {
        return buildInstallCard("", "install_daemon_tip", "Install", () async {
          bind.mainIsInstalledDaemon(prompt: true);
        });
      }
      //// Disable microphone configuration for macOS. We will request the permission when needed.
      // else if ((await osxCanRecordAudio() !=
      //     PermissionAuthorizeType.authorized)) {
      //   return buildInstallCard("Permissions", "config_microphone", "Configure",
      //       () async {
      //     osxRequestAudio();
      //     watchIsCanRecordAudio = true;
      //   });
      // }
    } else if (Platform.isLinux) {
      if (bind.mainCurrentIsWayland()) {
        return buildInstallCard(
            "Warning", translate("wayland_experiment_tip"), "", () async {},
            help: 'Help',
            link: 'https://rustdesk.com/docs/en/manual/linux/#x11-required');
      } else if (bind.mainIsLoginWayland()) {
        return buildInstallCard("Warning",
            "Login screen using Wayland is not supported", "", () async {},
            help: 'Help',
            link: 'https://rustdesk.com/docs/en/manual/linux/#login-screen');
      }
    }
    return Container();
  }

  Widget buildInstallCard(String title, String content, String btnText,
      GestureTapCallback onPressed,
      {String? help, String? link}) {
    return Container(
      margin: EdgeInsets.only(top: 20),
      child: Container(
          decoration: BoxDecoration(
              gradient: LinearGradient(
            begin: Alignment.centerLeft,
            end: Alignment.centerRight,
            colors: [
              Color.fromARGB(255, 226, 66, 188),
              Color.fromARGB(255, 244, 114, 124),
            ],
          )),
          padding: EdgeInsets.all(20),
          child: Column(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: (title.isNotEmpty
                      ? <Widget>[
                          Center(
                              child: Text(
                            translate(title),
                            style: TextStyle(
                                color: Colors.white,
                                fontWeight: FontWeight.bold,
                                fontSize: 15),
                          ).marginOnly(bottom: 6)),
                        ]
                      : <Widget>[]) +
                  <Widget>[
                    Text(
                      translate(content),
                      style: TextStyle(
                          height: 1.5,
                          color: Colors.white,
                          fontWeight: FontWeight.normal,
                          fontSize: 13),
                    ).marginOnly(bottom: 20)
                  ] +
                  (btnText.isNotEmpty
                      ? <Widget>[
                          Row(
                              mainAxisAlignment: MainAxisAlignment.center,
                              children: [
                                FixedWidthButton(
                                  width: 150,
                                  padding: 8,
                                  isOutline: true,
                                  text: translate(btnText),
                                  textColor: Colors.white,
                                  borderColor: Colors.white,
                                  textSize: 20,
                                  radius: 10,
                                  onTap: onPressed,
                                )
                              ])
                        ]
                      : <Widget>[]) +
                  (help != null
                      ? <Widget>[
                          Center(
                              child: InkWell(
                                  onTap: () async =>
                                      await launchUrl(Uri.parse(link!)),
                                  child: Text(
                                    translate(help),
                                    style: TextStyle(
                                        decoration: TextDecoration.underline,
                                        color: Colors.white,
                                        fontSize: 12),
                                  )).marginOnly(top: 6)),
                        ]
                      : <Widget>[]))),
    );
  }

  @override
  void initState() {
    super.initState();
    _updateTimer = periodic_immediate(const Duration(seconds: 1), () async {
      await gFFI.serverModel.fetchID();
      final url = await bind.mainGetSoftwareUpdateUrl();
      if (updateUrl != url) {
        updateUrl = url;
        setState(() {});
      }
      final error = await bind.mainGetError();
      if (systemError != error) {
        systemError = error;
        setState(() {});
      }
      final v = await bind.mainGetOption(key: "stop-service") == "Y";
      if (v != svcStopped.value) {
        svcStopped.value = v;
        setState(() {});
      }
      if (watchIsCanScreenRecording) {
        if (bind.mainIsCanScreenRecording(prompt: false)) {
          watchIsCanScreenRecording = false;
          setState(() {});
        }
      }
      if (watchIsProcessTrust) {
        if (bind.mainIsProcessTrusted(prompt: false)) {
          watchIsProcessTrust = false;
          setState(() {});
        }
      }
      if (watchIsInputMonitoring) {
        if (bind.mainIsCanInputMonitoring(prompt: false)) {
          watchIsInputMonitoring = false;
          // Do not notify for now.
          // Monitoring may not take effect until the process is restarted.
          // rustDeskWinManager.call(
          //     WindowType.RemoteDesktop, kWindowDisableGrabKeyboard, '');
          setState(() {});
        }
      }
      if (watchIsCanRecordAudio) {
        if (Platform.isMacOS) {
          Future.microtask(() async {
            if ((await osxCanRecordAudio() ==
                PermissionAuthorizeType.authorized)) {
              watchIsCanRecordAudio = false;
              setState(() {});
            }
          });
        } else {
          watchIsCanRecordAudio = false;
          setState(() {});
        }
      }
    });
    Get.put<RxBool>(svcStopped, tag: 'stop-service');
    rustDeskWinManager.registerActiveWindowListener(onActiveWindowChanged);

    rustDeskWinManager.setMethodHandler((call, fromWindowId) async {
      debugPrint(
          "[Main] call ${call.method} with args ${call.arguments} from window $fromWindowId");
      if (call.method == kWindowMainWindowOnTop) {
        window_on_top(null);
      } else if (call.method == kWindowGetWindowInfo) {
        final screen = (await window_size.getWindowInfo()).screen;
        if (screen == null) {
          return "";
        } else {
          return jsonEncode({
            'frame': {
              'l': screen.frame.left,
              't': screen.frame.top,
              'r': screen.frame.right,
              'b': screen.frame.bottom,
            },
            'visibleFrame': {
              'l': screen.visibleFrame.left,
              't': screen.visibleFrame.top,
              'r': screen.visibleFrame.right,
              'b': screen.visibleFrame.bottom,
            },
            'scaleFactor': screen.scaleFactor,
          });
        }
      } else if (call.method == kWindowActionRebuild) {
        reloadCurrentWindow();
      } else if (call.method == kWindowEventShow) {
        await rustDeskWinManager.registerActiveWindow(call.arguments["id"]);
      } else if (call.method == kWindowEventHide) {
        await rustDeskWinManager.unregisterActiveWindow(call.arguments["id"]);
      } else if (call.method == kWindowConnect) {
        await connectMainDesktop(
          call.arguments['id'],
          isFileTransfer: call.arguments['isFileTransfer'],
          isTcpTunneling: call.arguments['isTcpTunneling'],
          isRDP: call.arguments['isRDP'],
          forceRelay: call.arguments['forceRelay'],
        );
      }
    });
    _uniLinksSubscription = listenUniLinks();
  }

  @override
  void dispose() {
    _uniLinksSubscription?.cancel();
    Get.delete<RxBool>(tag: 'stop-service');
    _updateTimer?.cancel();
    super.dispose();
  }
}

void setPasswordDialog() async {
  final pw = await bind.mainGetPermanentPassword();
  final p0 = TextEditingController(text: pw);
  final p1 = TextEditingController(text: pw);
  var errMsg0 = "";
  var errMsg1 = "";
  final RxString rxPass = pw.trim().obs;
  final rules = [
    DigitValidationRule(),
    UppercaseValidationRule(),
    LowercaseValidationRule(),
    // SpecialCharacterValidationRule(),
    MinCharactersValidationRule(8),
  ];

  gFFI.dialogManager.show((setState, close) {
    submit() {
      setState(() {
        errMsg0 = "";
        errMsg1 = "";
      });
      final pass = p0.text.trim();
      if (pass.isNotEmpty) {
        final Iterable violations = rules.where((r) => !r.validate(pass));
        if (violations.isNotEmpty) {
          setState(() {
            errMsg0 =
                '${translate('Prompt')}: ${violations.map((r) => r.name).join(', ')}';
          });
          return;
        }
      }
      if (p1.text.trim() != pass) {
        setState(() {
          errMsg1 =
              '${translate('Prompt')}: ${translate("The confirmation is not identical.")}';
        });
        return;
      }
      bind.mainSetPermanentPassword(password: pass);
      close();
    }

    return CustomAlertDialog(
      title: Text(translate("Set Password")),
      content: ConstrainedBox(
        constraints: const BoxConstraints(minWidth: 500),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const SizedBox(
              height: 8.0,
            ),
            Row(
              children: [
                Expanded(
                  child: TextField(
                    obscureText: true,
                    decoration: InputDecoration(
                        labelText: translate('Password'),
                        errorText: errMsg0.isNotEmpty ? errMsg0 : null),
                    controller: p0,
                    autofocus: true,
                    onChanged: (value) {
                      rxPass.value = value.trim();
                      setState(() {
                        errMsg0 = '';
                      });
                    },
                  ),
                ),
              ],
            ),
            Row(
              children: [
                Expanded(child: PasswordStrengthIndicator(password: rxPass)),
              ],
            ).marginSymmetric(vertical: 8),
            const SizedBox(
              height: 8.0,
            ),
            Row(
              children: [
                Expanded(
                  child: TextField(
                    obscureText: true,
                    decoration: InputDecoration(
                        labelText: translate('Confirmation'),
                        errorText: errMsg1.isNotEmpty ? errMsg1 : null),
                    controller: p1,
                    onChanged: (value) {
                      setState(() {
                        errMsg1 = '';
                      });
                    },
                  ),
                ),
              ],
            ),
            const SizedBox(
              height: 8.0,
            ),
            Obx(() => Wrap(
                  runSpacing: 8,
                  spacing: 4,
                  children: rules.map((e) {
                    var checked = e.validate(rxPass.value.trim());
                    return Chip(
                        label: Text(
                          e.name,
                          style: TextStyle(
                              color: checked
                                  ? const Color(0xFF0A9471)
                                  : Color.fromARGB(255, 198, 86, 157)),
                        ),
                        backgroundColor: checked
                            ? const Color(0xFFD0F7ED)
                            : Color.fromARGB(255, 247, 205, 232));
                  }).toList(),
                ))
          ],
        ),
      ),
      actions: [
        dialogButton("Cancel", onPressed: close, isOutline: true),
        dialogButton("OK", onPressed: submit),
      ],
      onSubmit: submit,
      onCancel: close,
    );
  });
}
