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

// 添加新的导入
import 'package:dio/dio.dart';
import 'package:ef/ef.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_svg/svg.dart';
import 'package:flutterflow_ui/flutterflow_ui.dart';
import 'package:get_storage/get_storage.dart';
import 'package:open_file/open_file.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:vbvs_app/common/color/appConstants.dart';
import 'package:vbvs_app/common/util/FitTool.dart';
import 'package:vbvs_app/common/util/MyUtils.dart';
import 'package:vbvs_app/component/tool/CustomCard.dart';
import 'package:vbvs_app/component/tool/FrostedDialog.dart';
import 'package:vbvs_app/component/tool/NewTopSlideNotification.dart';
import 'package:vbvs_app/component/tool/TopSlideNotification.dart';
import 'package:vbvs_app/controller/main_bottom/global_controller.dart';
import 'package:vbvs_app/controller/main_bottom/main_page_controller.dart';
import 'package:vbvs_app/controller/message/message_controller.dart';
import 'package:vbvs_app/controller/setting/language/language_controller.dart';
import 'package:vbvs_app/controller/theme_controller/ThemeController.dart';
import 'package:vbvs_app/controller/user_info_controller.dart';
import 'package:vbvs_app/enum/APPPackageType.dart';
import 'package:vbvs_app/enum/LoginStatus.dart';
import 'package:vbvs_app/pages/common/selectDialog.dart';
import 'package:vbvs_app/pages/main_bottom/e_page.dart';
import 'package:vbvs_app/pages/main_bottom/home_page.dart';
import 'package:vbvs_app/pages/main_bottom/message_page.dart';
import 'package:vbvs_app/pages/main_bottom/mine_page.dart';

// 创建一个专门管理下载状态的Controller
class DownloadController extends GetxController {
  RxDouble downloadProgress = 0.0.obs;
  RxBool isDownloading = false.obs;
  RxString downloadStatus = '等待下载'.obs;
  CancelToken? cancelToken;
  String? downloadFilePath;

  void startDownload() {
    isDownloading.value = true;
    downloadProgress.value = 0.0;
    downloadStatus.value = '开始下载';
  }

  void updateProgress(double progress) {
    downloadProgress.value = progress;
    downloadStatus.value = '下载中: ${(progress * 100).toStringAsFixed(1)}%';
  }

  void completeDownload(String filePath) {
    isDownloading.value = false;
    downloadProgress.value = 1.0;
    downloadStatus.value = '下载完成';
    downloadFilePath = filePath;
  }

  void cancelDownload() {
    if (cancelToken != null) {
      cancelToken!.cancel();
      cancelToken = null;
    }
    isDownloading.value = false;
    downloadProgress.value = 0.0;
    downloadStatus.value = '下载已取消';
  }

  void errorDownload(String error) {
    isDownloading.value = false;
    downloadStatus.value = '下载失败: $error';
  }
}

class MainPageBottomChange extends GetView<MainPageController> {
  GlobalController globalController = Get.find();
  ThemeController themeController = Get.find();
  MessageController messageController = Get.find();
  final getStorage = GetStorage();

  late final List<Widget> arr;
  late final List<BottomNavigationBarItem> bottomItems;
  DateTime? _lastBackPressedTime;
  LanguageController languageController = Get.find();
  bool select = false; // 是否已经提示过升级弹窗

  // 使用GetX Controller来管理下载状态
  final DownloadController downloadController = Get.put(DownloadController());

  MainPageBottomChange({super.key}) {
    // ✅ 根据是否测试账号动态生成页面
    if (!AppConstants.is_test_account) {
      arr = [
        HomePage(),
        EPage(sleepUri: "https://xiaoe.he-info.cn/"),
        MessagePage(),
        MinePage(),
      ];
      bottomItems = [
        getBottomNavigationBarItem("assets/img/menu/home.svg",
            "assets/img/menu/n_home.svg", "菜单.首页".tr),
        getBottomNavigationBarItem(
            "assets/img/menu/e.svg", "assets/img/menu/n_e.svg", "菜单.小e".tr),
        getBottomNavigationBarItem("assets/img/menu/message.svg",
            "assets/img/menu/n_message.svg", "菜单.消息".tr,
            showBadge: true),
        getBottomNavigationBarItem("assets/img/menu/mine.svg",
            "assets/img/menu/n_mine.svg", "菜单.我的".tr),
      ];
    } else {
      arr = [
        HomePage(),
        MessagePage(),
        MinePage(),
      ];
      bottomItems = [
        getBottomNavigationBarItem("assets/img/menu/home.svg",
            "assets/img/menu/n_home.svg", "菜单.首页".tr),
        getBottomNavigationBarItem("assets/img/menu/message.svg",
            "assets/img/menu/n_message.svg", "菜单.消息".tr,
            showBadge: (messageController.model.body_message_read == 1 ||
                messageController.model.system_message_read == 1)),
        getBottomNavigationBarItem("assets/img/menu/mine.svg",
            "assets/img/menu/n_mine.svg", "菜单.我的".tr),
      ];
    }
  }

  // iOS跳转AppStore方法
  Future<void> _openAppStore() async {
    const appStoreId = '6746246837'; // 你的 App ID

    // 优先尝试使用 App Store 应用打开
    final directUrl =
        Uri.parse('itms-apps://itunes.apple.com/app/id$appStoreId');
    final webUrl = Uri.parse('https://apps.apple.com/app/id$appStoreId');

    try {
      // 使用新版本的 canLaunchUrl 和 launchUrl
      if (await canLaunchUrl(directUrl)) {
        await launchUrl(
          directUrl,
          mode: LaunchMode.externalApplication, // 重要：使用外部应用打开
        );
      } else if (await canLaunchUrl(webUrl)) {
        // 备用：使用网页版
        await launchUrl(
          webUrl,
          mode: LaunchMode.externalApplication,
        );
      } else {
        // 如果都无法打开
        NewTopSlideNotification.show(
          text: "无法打开AppStore链接".tr,
          textColor: themeController.currentColor.sc9,
        );
      }
    } catch (e) {
      print('打开 App Store 失败: $e');
      NewTopSlideNotification.show(
        text: "打开AppStore失败".tr,
        textColor: themeController.currentColor.sc9,
      );
    }
  }

  // 检查并请求存储权限（Android）
  Future<bool> _requestStoragePermission() async {
    return true;
    if (!Platform.isAndroid) return true;

    var status = await Permission.storage.status;
    if (!status.isGranted) {
      status = await Permission.storage.request();
    }

    if (Platform.isAndroid && status.isGranted) {
      // Android 11及以上需要请求管理外部存储权限
      if (await Permission.manageExternalStorage.isRestricted) {
        status = await Permission.manageExternalStorage.request();
      }
    }

    return status.isGranted;
  }

  // 下载APK文件
  Future<void> _downloadApk({
    required String url,
    required String version,
  }) async {
    try {
      // 请求存储权限
      bool hasPermission = await _requestStoragePermission();
      if (!hasPermission) {
        downloadController.errorDownload("需要存储权限才能下载应用更新");
        NewTopSlideNotification.show(
            text: "需要存储权限才能下载应用更新".tr,
            textColor: themeController.currentColor.sc9);
        return;
      }

      // 创建下载目录
      Directory? externalDir = await getExternalStorageDirectory();
      String downloadDir = '${externalDir!.path}/Download';

      // 确保目录存在
      await Directory(downloadDir).create(recursive: true);

      // 生成文件名
      String fileName = 'app_update_$version.apk';
      String filePath = '$downloadDir/$fileName';

      // 如果文件已存在，先删除
      File existingFile = File(filePath);
      if (await existingFile.exists()) {
        await existingFile.delete();
      }

      // 创建Dio实例
      Dio dio = Dio();
      downloadController.cancelToken = CancelToken();
      downloadController.startDownload();

      // 开始下载
      try {
        await dio.download(
          url,
          filePath,
          cancelToken: downloadController.cancelToken,
          onReceiveProgress: (received, total) {
            if (total != -1) {
              double progress = received / total;
              downloadController.updateProgress(progress);
            }
          },
          options: Options(
            headers: {
              'User-Agent': 'Dart/2.18 (dart:io)',
            },
            receiveTimeout: const Duration(minutes: 5),
          ),
        );
      } catch (e) {
        ef.log("msg");
      }

      downloadController.completeDownload(filePath);
    } catch (e) {
      if (e is DioException && e.type == DioExceptionType.cancel) {
        downloadController.errorDownload("下载已取消");
      } else {
        downloadController.errorDownload("下载失败: ${e.toString()}");
      }
      NewTopSlideNotification.show(
          text: "服务器错误，请稍后再试".tr, textColor: themeController.currentColor.sc9);
    } finally {
      downloadController.cancelToken = null;
    }
  }

  // 安装APK文件（Android）
  Future<void> _installApk(String filePath) async {
    if (!Platform.isAndroid) return;

    try {
      // Android 8.0+ 需要「允许安装未知来源应用」权限
      var status = await Permission.requestInstallPackages.status;
      if (!status.isGranted) {
        status = await Permission.requestInstallPackages.request();
        if (!status.isGranted) {
          Get.snackbar("权限被拒绝", "需要安装应用的权限");
          return;
        }
      }

      // 使用 open_file 打开 APK（系统安装器）
      final result = await OpenFile.open(
        filePath,
        type: "application/vnd.android.package-archive",
      );

      if (result.type == ResultType.done) {
        // Get.snackbar("提示", "正在打开安装程序...");
      } else {
        Get.defaultDialog(
          title: "安装提示".tr,
          middleText: "无法自动安装，请手动安装\n路径:\n$filePath".tr,
          textConfirm: "确定".tr,
          onConfirm: () => Get.back(),
        );
      }
    } catch (e) {
      // Get.snackbar("安装失败", "错误: $e\n请手动安装: $filePath");
      // SystemNavigator.pop();
    }
  }

  // 显示更新对话框
  void _showUpdateDialog(
    BuildContext context,
    String newVersion,
    String updateContent,
    String updateUrl,
  ) {
    select = true;

    // 使用Obx来包装对话框内容
    Get.dialog(
      WillPopScope(
        onWillPop: () async => false, // 禁止返回键关闭
        child: FrostedDialog(
          blurSigma: 3.0,
          child: Container(
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.circular(8.0),
            ),
            padding: EdgeInsetsDirectional.fromSTEB(64.rpx, 0, 64.rpx, 0),
            child: Container(
              width: double.infinity,
              constraints: BoxConstraints(
                maxHeight: MediaQuery.sizeOf(context).height * 0.656,
              ),
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  // 使用Obx监听下载状态
                  Obx(() {
                    return Align(
                      alignment: AlignmentDirectional(0, 0),
                      child: Padding(
                        padding: EdgeInsetsDirectional.fromSTEB(
                            0.rpx, 93.rpx, 0, 74.rpx),
                        child: Column(
                          children: [
                            /// 上半部分：居中对齐
                            Column(
                              crossAxisAlignment: CrossAxisAlignment.center,
                              children: [
                                SizedBox(
                                  width: 94.rpx,
                                  height: 70.rpx,
                                  child: SvgPicture.asset(
                                    'assets/img/icon/upgrade.svg',
                                    fit: BoxFit.cover,
                                  ),
                                ),
                                SizedBox(height: 37.rpx),
                                Text(
                                  downloadController.isDownloading.value
                                      ? "正在下载更新...".tr
                                      : "检测到新版本！".tr,
                                  style: TextStyle(
                                    color: stringToColor("#333333"),
                                    fontSize:
                                        AppConstants().title_text_fontSize,
                                  ),
                                ),
                              ],
                            ),

                            SizedBox(height: 37.rpx),

                            /// 显示下载进度
                            if (downloadController.isDownloading.value)
                              Column(
                                children: [
                                  LinearProgressIndicator(
                                    value: downloadController
                                        .downloadProgress.value,
                                    backgroundColor: Colors.grey[200],
                                    valueColor: AlwaysStoppedAnimation<Color>(
                                        Colors.blue),
                                  ),
                                  SizedBox(height: 10),
                                  Text(
                                    downloadController.downloadStatus.value,
                                    style: TextStyle(
                                      fontSize: 14,
                                      color: Colors.grey[600],
                                    ),
                                  ),
                                  SizedBox(height: 20),
                                ],
                              ),

                            /// 更新信息
                            Column(
                              crossAxisAlignment: CrossAxisAlignment.start,
                              children: [
                                Text("当前版本号".tr +
                                    "：" +
                                    AppConstants.theh_app_version),
                                Text("升级后版本".tr + "：" + newVersion),
                                SizedBox(height: 10),
                                Container(
                                  padding: EdgeInsets.all(10),
                                  decoration: BoxDecoration(
                                    color: Colors.grey[100],
                                    borderRadius: BorderRadius.circular(8),
                                  ),
                                  child: Text(
                                    "升级内容".tr + "：" + updateContent,
                                    style: TextStyle(
                                      fontSize: 14,
                                      color: Colors.grey[700],
                                    ),
                                  ),
                                ),
                              ],
                            ),
                          ],
                        ),
                      ),
                    );
                  }),

                  // 按钮区域
                  Padding(
                    padding:
                        EdgeInsetsDirectional.fromSTEB(0, 19.rpx, 0, 60.rpx),
                    child: Obx(() {
                      return Column(
                        children: [
                          // 主要按钮（升级/下载按钮）
                          CustomCard(
                            gradientDirection: GradientDirection.vertical,
                            borderRadius:
                                AppConstants().button_container_radius,
                            onTap: () async {
                              if (Platform.isIOS) {
                                // 跳转AppStore
                                await _openAppStore();
                                Get.back();
                              } else if (!downloadController
                                  .isDownloading.value) {
                                // 开始下载
                                _downloadApk(
                                  url: updateUrl,
                                  version: newVersion,
                                );
                              }
                            },
                            colors: [
                              themeController.currentColor.sc1,
                              themeController.currentColor.sc2,
                            ],
                            child: Container(
                              width: MediaQuery.sizeOf(context).width,
                              height: MediaQuery.sizeOf(context).height * 0.055,
                              constraints: BoxConstraints(
                                minWidth: 500.rpx,
                                minHeight: 90.rpx,
                              ),
                              child: Row(
                                mainAxisSize: MainAxisSize.max,
                                mainAxisAlignment: MainAxisAlignment.center,
                                children: [
                                  Text(
                                    downloadController.isDownloading.value
                                        ? "下载中...".tr
                                        : Platform.isIOS
                                            ? "前往AppStore".tr
                                            : "升级".tr,
                                    style: TextStyle(
                                      color: Colors.white,
                                      fontFamily: 'Inter',
                                      fontSize:
                                          AppConstants().normal_text_fontSize,
                                      letterSpacing: 0.0,
                                    ),
                                  ),
                                ].divide(SizedBox(width: 17.rpx)),
                              ),
                            ),
                          ),
                        ],
                      );
                    }),
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );

    // 监听下载完成
    ever(downloadController.isDownloading, (isDownloading) async {
      if (!isDownloading && downloadController.downloadProgress.value >= 1.0) {
        // 下载完成，关闭对话框并安装
        Get.back();
        // Get.defaultDialog(
        //   title: "下载完成".tr,
        //   middleText: "新版本已下载完成，是否立即安装？".tr,
        //   textConfirm: "安装".tr,
        //   textCancel: "稍后".tr,
        //   onConfirm: () {
        //     Get.back();
        //     _installApk(downloadController.downloadFilePath!);
        //   },
        //   onCancel: () {
        //     Get.back();
        //     Get.snackbar(
        //         "提示", "安装文件保存在: ${downloadController.downloadFilePath}");
        //   },
        // );
        await Future.delayed(Duration(milliseconds: 2000));
        _installApk(downloadController.downloadFilePath!);
      }
    });
  }

  getBottomNavigationBarItem(String svgPath, String actSvgPath, String label,
      {double size = 0, bool isEmpty = false, bool showBadge = false}) {
    if (size == 0) size = 36.rpx;

    Widget buildIcon(String path) {
      return Obx(() {
        int type1 = messageController.model.body_message_read!;
        int type2 = messageController.model.system_message_read!;
        return Padding(
          padding: EdgeInsets.only(bottom: 6.rpx),
          child: isEmpty
              ? Container()
              : Stack(
                  clipBehavior: Clip.none,
                  children: [
                    SvgPicture.asset(
                      path,
                      width: size,
                      height: size,
                    ),
                    if ((type1 == 1 || type2 == 1) && showBadge)
                      Positioned(
                        right: -20.rpx,
                        top: -2.rpx,
                        child: Container(
                          width: 14.rpx,
                          height: 14.rpx,
                          decoration: const BoxDecoration(
                            color: Colors.red,
                            shape: BoxShape.circle,
                          ),
                        ),
                      ),
                  ],
                ),
        );
      });
    }

    return BottomNavigationBarItem(
      icon: buildIcon(actSvgPath),
      activeIcon: buildIcon(svgPath),
      label: label,
    );
  }

  @override
  Widget build(BuildContext context) {
    if (AppConstants().ent_type != APPPackageType.MHT.code && isShowPrivacyOriginFromTHAPP()) {
      Future.delayed(const Duration(milliseconds: 0), () {
        String? isShowYingShiDialog = getStorage.read("isShowYingShiDialog");
        if (isShowYingShiDialog == null || isShowYingShiDialog != "true") {
          String btnName = "同意".tr;
          String cancelName = "取消".tr;
          if (Platform.isAndroid) cancelName = "退出".tr;

          showCustomConfirmOfWebViewDialog(context, "隐私协议".tr, getPrivacy(1),
                  btnName: btnName, showCancel: true, cancelName: cancelName)
              .then((e) async {
            if (e == "confirm") {
              getStorage.write("isShowYingShiDialog", "true");
              await Future.delayed(const Duration(milliseconds: 1000));
              if (select != true) {
                // 判断APP是否需要更新
                UserInfoController userInfoController = Get.find();
                userInfoController
                    .checkAPPUpdate(AppConstants.theh_app_version)
                    .then((data) {
                  if (data != null) {
                    if (data['update'] != null && data['update'] == true) {
                      // 需要更新
                      String updateUrl = data['file']['path'];
                      String currentVersion = AppConstants.theh_app_version;
                      String newVersion = data['file']['version'] ?? "1.2.0";
                      String updateContent =
                          data['file']['desc'] ?? "修复已知bug".tr;
                      try {
                        _showUpdateDialog(
                            context, newVersion, updateContent, updateUrl);
                      } catch (e) {
                        ef.log("更新对话框显示失败: $e");
                      }
                    }
                  }
                });
              }
            } else {
              if (cancelName == "退出") SystemNavigator.pop();
            }
          });
        } else {
          if (select != true) {
            // 判断APP是否需要更新
            UserInfoController userInfoController = Get.find();
            userInfoController
                .checkAPPUpdate(AppConstants.theh_app_version)
                .then((data) {
              if (data != null) {
                if (data['update'] != null && data['update'] == true) {
                  // 需要更新
                  String updateUrl = data['file']['path'];
                  String currentVersion = AppConstants.theh_app_version;
                  String newVersion = data['file']['version'] ?? "1.2.0";
                  String updateContent = data['file']['desc'] ?? "修复已知bug".tr;
                  try {
                    _showUpdateDialog(
                        context, newVersion, updateContent, updateUrl);
                  } catch (e) {
                    ef.log("更新对话框显示失败: $e");
                  }
                }
              }
            });
          }
        }
      });
    }

    return Obx(() {
      final currentLanguage =
          languageController.selectLanguage.value; // 监听此变量变化
      return PopScope(
        canPop: false,
        onPopInvokedWithResult: (disposition, result) async {
          UserInfoController userInfoController = Get.find();
          if (userInfoController.model.isProgrammaticPop) {
            userInfoController.model.isProgrammaticPop = false;
            return;
          }

          if (Platform.isAndroid) {
            var flag = await _handleBackPressed(context);
            if (flag) {
              SystemNavigator.pop();
            }
          }
        },
        child: Obx(() {
          int currentIndex = controller.model.currentIndex;

          // ✅ 防止 index 超出范围（例如测试账号少一个 tab）
          if (currentIndex >= arr.length) {
            currentIndex = 0;
            controller.model.currentIndex = 0;
          }

          if (globalController.model.hideBottomNavigationBar == true) {
            return Scaffold(
              body: IndexedStack(
                index: currentIndex,
                children:
                    arr.map((page) => SizedBox.expand(child: page)).toList(),
              ),
            );
          } else {
            return Container(
              decoration: BoxDecoration(
                image: DecorationImage(
                  image: AssetImage(getBackgroundImage()),
                  fit: BoxFit.fill,
                ),
              ),
              child: Scaffold(
                backgroundColor: Colors.transparent,
                body: IndexedStack(
                  index: currentIndex,
                  children:
                      arr.map((page) => SizedBox.expand(child: page)).toList(),
                ),
                bottomNavigationBar: Theme(
                  data: Theme.of(context).copyWith(
                    splashFactory: NoSplash.splashFactory,
                    splashColor: Colors.transparent,
                    highlightColor: Colors.transparent,
                  ),
                  child: Container(
                    decoration: BoxDecoration(
                      border: Border(
                        top: BorderSide(
                          color:
                              themeController.currentColor.sc4.withOpacity(0.5),
                          width: AppConstants().border_width,
                        ),
                      ),
                    ),
                    child: BottomNavigationBar(
                      unselectedItemColor: themeController.currentColor.sc4,
                      selectedItemColor: themeController.currentColor.sc1,
                      backgroundColor: themeController.currentColor.sc5,
                      selectedFontSize: 26.rpx,
                      unselectedFontSize: 26.rpx,
                      type: BottomNavigationBarType.fixed,
                      currentIndex: currentIndex,
                      onTap: (index) {
                        Future.delayed(const Duration(milliseconds: 100), () {
                          UserInfoController userInfoController = Get.find();
                          bool isLoggedIn = userInfoController.model.login ==
                              LoginStatus.LOGIN.code;

                          // ✅ 仅非测试账号检查登录状态
                          if (!AppConstants.is_test_account &&
                              (index == 2) &&
                              !isLoggedIn) {
                            TopSlideNotification.show(
                              context,
                              text: "必须登录提示".tr,
                              textColor: themeController.currentColor.sc9,
                            );
                            Future.delayed(const Duration(milliseconds: 50),
                                () {
                              if (Get.currentRoute == '/ePage' ||
                                  Get.currentRoute == '/messagePage') {
                                Get.back();
                              }
                              Future.delayed(const Duration(milliseconds: 100),
                                  () {
                                Get.toNamed("/otherLoginPage");
                              });
                            });
                            return;
                          }

                          if (controller.model.currentIndex != index) {
                            globalController.model.hideBottomNavigationBar =
                                false;
                            globalController.updateAll();
                          }

                          controller.model.currentIndex = index;
                          controller.updateAll();
                        });
                      },
                      items: bottomItems,
                    ),
                  ),
                ),
              ),
            );
          }
        }),
      );
    });
  }

  Future<bool> _handleBackPressed(BuildContext context) async {
    final currentTime = DateTime.now();
    if (_lastBackPressedTime == null ||
        currentTime.difference(_lastBackPressedTime!) >
            const Duration(seconds: 2)) {
      _lastBackPressedTime = currentTime;
      TopSlideNotification.show(context, text: "滑动退出提醒".tr);
      return false;
    } else {
      return true;
    }
  }

  //太和e护衍生app是否显示协议
  bool isShowPrivacyOriginFromTHAPP() {
    if (AppConstants().ent_type == APPPackageType.TH.code) {
      return true;
    }
    if (AppConstants().ent_type == APPPackageType.DONGHUA.code) {
      return true;
    }
    return false;
  }
}