import 'dart:ui';
import 'dart:math';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:package_info_plus/package_info_plus.dart';

int getRandomWithNum(int min, int max) {
  final random = Random();
  return random.nextInt(max) + min; // 生成随机数
}

double screenWidth(BuildContext context) {
  double screenWidth = MediaQuery.of(context).size.width;
  return screenWidth;
}

void pushPage(Widget page, BuildContext context) {
  Navigator.push(context, MaterialPageRoute(builder: (context) => page));
}

void present(Widget page, BuildContext context) {
  Navigator.push(
    context,
    MaterialPageRoute(fullscreenDialog: true, builder: (context) => page),
  );
}

/// 文本样式工具类
/// 文本样式工具类
/// 文本样式工具类，返回 Text Widget
class HhTextStyleUtils {
  /// 主要标题，返回 Text
  /// [text]: 文本内容
  /// [color]: 文本颜色，默认黑色
  /// [fontSize]: 字体大小，默认16.0
  /// [bold]: 是否加粗，默认true
  static Text mainTitle(
    String text, {
    Color color = Colors.black,
    double fontSize = 16.0,
    bool bold = true,
  }) {
    return Text(
      text,
      style: TextStyle(
        color: color,
        fontSize: fontSize,
        fontWeight: bold ? FontWeight.bold : FontWeight.normal,
      ),
    );
  }

  static TextStyle secondaryTitleStyle = TextStyle(
    color: Colors.black54,
    fontSize: 15.0,
  );

  /// 次要标题，返回 Text
  /// [text]: 文本内容
  /// [color]: 文本颜色，默认深灰
  /// [fontSize]: 字体大小，默认14.0
  /// [bold]: 是否加粗，默认false
  static Text secondaryTitle(
    String text, {
    Color color = Colors.black54,
    double fontSize = 14.0,
    bool bold = false,
  }) {
    return Text(
      text,
      style: TextStyle(
        color: color,
        fontSize: fontSize,
        fontWeight: bold ? FontWeight.bold : FontWeight.normal,
      ),
    );
  }

  /// 小文字，返回 Text
  /// [text]: 文本内容
  /// [color]: 文本颜色，默认灰色
  /// [fontSize]: 字体大小，默认12.0
  /// [bold]: 是否加粗，默认false
  static Text smallText(
    String text, {
    Color color = Colors.black54,
    double fontSize = 12.0,
    bool bold = false,
  }) {
    return Text(
      text,
      style: TextStyle(
        color: color,
        fontSize: fontSize,
        fontWeight: bold ? FontWeight.bold : FontWeight.normal,
      ),
    );
  }
}

/// 版本信息模型类
class AppVersionInfo {
  final String versionName; // 版本名称（如 1.0.0）
  final String buildNumber; // 构建号（如 1）
  final String fullVersion; // 完整版本（如 1.0.0+1）

  AppVersionInfo({
    required this.versionName,
    required this.buildNumber,
    required this.fullVersion,
  });

  @override
  String toString() {
    return fullVersion;
  }
}

// 获取应用版本信息的方法
Future<AppVersionInfo> getAppVersion() async {
  try {
    final packageInfo = await PackageInfo.fromPlatform();
    return AppVersionInfo(
      versionName: packageInfo.version,
      buildNumber: packageInfo.buildNumber,
      fullVersion: '${packageInfo.version}+${packageInfo.buildNumber}',
    );
  } catch (e) {
    // 获取失败时返回默认值
    return AppVersionInfo(
      versionName: '1.0.0',
      buildNumber: '1',
      fullVersion: '1.0.0+0',
    );
  }
}

/// ------------------------------------------------------
/// 全局会话管理
/// ------------------------------------------------------
class SessionService {
  SessionService._();

  static final SessionService instance = SessionService._();

  String? corpinfoId;
  String? loginUserId;
  Map<String, dynamic>? loginUser;
  String? deptId;
  String? deptLevel;
  String? postId;
  String? username;
  String? version;
  String? basePath;
  String? isRest;
  List<dynamic>? permission;
  bool updateInfo = false;

  /// 如果以下任何一项为空，则跳转到登录页
  void loginSession(BuildContext context) {
    if (corpinfoId == null || loginUserId == null || loginUser == null) {
      Navigator.pushReplacementNamed(context, '/login');
    }
  }

  // setters
  void setLoginUser(Map<String, dynamic> user) => loginUser = user;

  void setLoginUserId(String id) => loginUserId = id;

  void setCorpinfoId(String id) => corpinfoId = id;

  void setDeptId(String id) => deptId = id;

  void setDeptLevel(String level) => deptLevel = level;

  void setPostId(String id) => postId = id;

  void setUsername(String name) => username = name;

  void setVersion(String ver) => version = ver;

  void setBasePath(String url) => basePath = url;

  void setIsRest(String rest) => isRest = rest;

  void setPermission(List<dynamic> list) => permission = list;

  void setUpdateInfo(bool flag) => updateInfo = flag;


}

/// ------------------------------------------------------
/// 日期格式化
/// ------------------------------------------------------
String formatDate(DateTime? date, String fmt) {
  if (date == null) return '';
  String twoDigits(int n) => n.toString().padLeft(2, '0');

  final replacements = <String, String>{
    'yyyy': date.year.toString(),
    'yy': date.year.toString().substring(2),
    'MM': twoDigits(date.month),
    'M': date.month.toString(),
    'dd': twoDigits(date.day),
    'd': date.day.toString(),
    'hh': twoDigits(date.hour),
    'h': date.hour.toString(),
    'mm': twoDigits(date.minute),
    'm': date.minute.toString(),
    'ss': twoDigits(date.second),
    's': date.second.toString(),
  };

  String result = fmt;
  replacements.forEach((key, value) {
    result = result.replaceAllMapped(RegExp(key), (_) => value);
  });
  return result;
}

/// ------------------------------------------------------
/// 防多次点击
/// ------------------------------------------------------
class ClickUtil {
  ClickUtil._();

  static bool _canClick = true;

  /// 调用示例：
  /// ClickUtil.noMultipleClicks(() { /* your code */ });
  static void noMultipleClicks(VoidCallback fn, {int delayMs = 2000}) {
    if (_canClick) {
      _canClick = false;
      fn();
      Future.delayed(Duration(milliseconds: delayMs), () {
        _canClick = true;
      });
    } else {
      // 可替换成 Toast
      debugPrint('请稍后点击');
    }
  }
}

void presentPage(BuildContext context, Widget page) {
  Navigator.push(
    context,
    MaterialPageRoute(fullscreenDialog: true, builder: (_) => page),
  );
}

class LoadingDialogHelper {
  static void show(BuildContext context) {
    showDialog(
      context: context,
      barrierDismissible: false,
      builder: (_) => const Center(child: CircularProgressIndicator()),
    );
  }

  static void hide(BuildContext context) {
    if (Navigator.canPop(context)) {
      Navigator.of(context).pop();
    }
  }
}