import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';

import '../../constants/color_constants.dart';

class ThemeConfig {
  static ThemeData createTheme({
    required Brightness brightness,
    required Color background,
    required Color primaryText,
    Color? secondaryText,
    required Color accentColor,
    Color? divider,
    Color? buttonBackground,
    required Color buttonText,
    Color? cardBackground,
    Color? disabled,
    required Color error,
  }) {
    final baseTextTheme = brightness == Brightness.dark ? Typography.blackMountainView : Typography.whiteMountainView;

    return ThemeData(
      brightness: brightness,
      canvasColor: background,
      cardColor: background,
      dividerColor: divider,
      backgroundColor: background,
      primaryColor: accentColor,
      toggleableActiveColor: accentColor,
      errorColor: error,
      unselectedWidgetColor: hexToColor('#DADCDD'),
      dividerTheme: DividerThemeData(
        color: divider,
        space: 1,
        thickness: 1,
      ),
      cardTheme: CardTheme(
        color: cardBackground,
        margin: EdgeInsets.zero,
        clipBehavior: Clip.antiAliasWithSaveLayer,
      ),
      textSelectionTheme: TextSelectionThemeData(
        selectionColor: accentColor,
        selectionHandleColor: accentColor,
        cursorColor: accentColor,
      ),
      appBarTheme: AppBarTheme(
        color: cardBackground,
        titleTextStyle: TextStyle(
          color: secondaryText,
          fontSize: 18,
        ),
        iconTheme: IconThemeData(
          color: secondaryText,
        ),
      ),
      iconTheme: IconThemeData(
        color: secondaryText,
        size: 16.0,
      ),
      buttonTheme: ButtonThemeData(
        textTheme: ButtonTextTheme.primary,
        colorScheme: ColorScheme(
          brightness: brightness,
          primary: accentColor,
          secondary: accentColor,
          surface: background,
          background: background,
          error: error,
          onPrimary: buttonText,
          onSecondary: buttonText,
          onSurface: buttonText,
          onBackground: buttonText,
          onError: buttonText,
        ),
        padding: const EdgeInsets.all(16.0),
      ),
      cupertinoOverrideTheme: CupertinoThemeData(
        brightness: brightness,
        primaryColor: accentColor,
      ),
      inputDecorationTheme: InputDecorationTheme(
        errorStyle: TextStyle(color: error),
        labelStyle: TextStyle(
          fontFamily: 'Rubik',
          fontWeight: FontWeight.w600,
          fontSize: 16.0,
          color: primaryText.withOpacity(0.5),
        ),
        hintStyle: TextStyle(
          color: secondaryText,
          fontSize: 13.0,
          fontWeight: FontWeight.w300,
        ),
      ),
      textTheme: TextTheme(
        headline1: baseTextTheme.headline1!.copyWith(
          color: primaryText,
          fontSize: 34.0,
          fontWeight: FontWeight.bold,
        ),
        headline2: baseTextTheme.headline2!.copyWith(
          color: primaryText,
          fontSize: 22,
          fontWeight: FontWeight.bold,
        ),
        headline3: baseTextTheme.headline3!.copyWith(
          color: secondaryText,
          fontSize: 20,
          fontWeight: FontWeight.w600,
        ),
        headline4: baseTextTheme.headline4!.copyWith(
          color: primaryText,
          fontSize: 18,
          fontWeight: FontWeight.w600,
        ),
        headline5: baseTextTheme.headline5!.copyWith(
          color: primaryText,
          fontSize: 16,
          fontWeight: FontWeight.w700,
        ),
        headline6: baseTextTheme.headline6!.copyWith(
          color: primaryText,
          fontSize: 14,
          fontWeight: FontWeight.w700,
        ),
        bodyText1: baseTextTheme.bodyText1!.copyWith(
          color: secondaryText,
          fontSize: 15,
        ),
        bodyText2: baseTextTheme.bodyText2!.copyWith(
          color: primaryText,
          fontSize: 12,
          fontWeight: FontWeight.w400,
        ),
        button: baseTextTheme.button!.copyWith(
          color: primaryText,
          fontSize: 12.0,
          fontWeight: FontWeight.w700,
        ),
        caption: baseTextTheme.caption!.copyWith(
          color: primaryText,
          fontSize: 11.0,
          fontWeight: FontWeight.w300,
        ),
        overline: baseTextTheme.overline!.copyWith(
          color: secondaryText,
          fontSize: 11.0,
          fontWeight: FontWeight.w500,
        ),
        subtitle1: baseTextTheme.subtitle1!.copyWith(
          color: primaryText,
          fontSize: 16.0,
          fontWeight: FontWeight.w700,
        ),
        subtitle2: baseTextTheme.subtitle2!.copyWith(
          color: secondaryText,
          fontSize: 11.0,
          fontWeight: FontWeight.w500,
        ),
      ),
    );
  }

  static ThemeData get lightTheme => createTheme(
        brightness: Brightness.light,
        background: ColorConstants.lightScaffoldBackgroundColor,
        cardBackground: ColorConstants.secondaryAppColor,
        primaryText: Colors.black,
        secondaryText: Colors.black,
        accentColor: ColorConstants.secondaryAppColor,
        divider: ColorConstants.secondaryAppColor,
        buttonBackground: Colors.black38,
        buttonText: ColorConstants.secondaryAppColor,
        disabled: ColorConstants.secondaryAppColor,
        error: Colors.red,
      );

  static ThemeData get darkTheme => createTheme(
        brightness: Brightness.dark,
        background: ColorConstants.darkScaffoldBackgroundColor,
        cardBackground: ColorConstants.secondaryDarkAppColor,
        primaryText: Colors.white,
        secondaryText: Colors.white,
        accentColor: ColorConstants.secondaryDarkAppColor,
        divider: Colors.black45,
        buttonBackground: Colors.white,
        buttonText: ColorConstants.secondaryDarkAppColor,
        disabled: ColorConstants.secondaryDarkAppColor,
        error: Colors.red,
      );

  //亮色模式模式下的状态栏与导航栏设置 （默认黑色状态栏文本，白色导航栏）
  static SystemUiOverlayStyle get systemUiOverlayStyleLightThemeBlack {
    return SystemUiOverlayStyle.light.copyWith(
      statusBarColor: Colors.transparent,
      //顶部导航栏的状态栏背景颜色
      statusBarBrightness: Brightness.light,
      //顶部状态栏颜色模式
      statusBarIconBrightness: Brightness.dark,
      //顶部状态栏Icon与文本颜色模式
      systemNavigationBarDividerColor: Colors.transparent,
      //底部导航栏分割线颜色
      systemNavigationBarColor: Colors.white,
      //底部导航栏背景颜色
      systemNavigationBarIconBrightness: Brightness.dark, //底部导航栏三大金刚键的颜色模式
    );
  }

  //亮色模式模式下的状态栏与导航栏设置 （设置白色状态栏文本，白色导航栏）
  static SystemUiOverlayStyle get systemUiOverlayStyleLightThemeWhite {
    return SystemUiOverlayStyle.light.copyWith(
      statusBarColor: Colors.transparent,
      statusBarBrightness: Brightness.dark,
      statusBarIconBrightness: Brightness.light,
      systemNavigationBarDividerColor: Colors.transparent,
      systemNavigationBarColor: Colors.white,
      systemNavigationBarIconBrightness: Brightness.dark,
    );
  }

  //黑暗模式下，统一使用白色状态栏文本，黑色导航栏
  static SystemUiOverlayStyle get systemUiOverlayStyleDarkTheme {
    return SystemUiOverlayStyle.dark.copyWith(
      statusBarColor: Colors.transparent,
      statusBarBrightness: Brightness.dark,
      statusBarIconBrightness: Brightness.light,
    );
  }

  // ===================================== 切换样式 ↓ =====================================

  //强制更新整个App的样式
  static void _updateTheme(bool isDark) {
    Future.delayed(const Duration(milliseconds: 500), () {
      Get.forceAppUpdate();

      if (isDark) {
        if (GetPlatform.isAndroid) {
          //指定全局页面的状态栏，导航栏等设置
          SystemChrome.setSystemUIOverlayStyle(ThemeConfig.systemUiOverlayStyleDarkTheme);
        }
      } else {
        if (GetPlatform.isAndroid) {
          //指定全局页面的状态栏，导航栏等设置
          SystemChrome.setSystemUIOverlayStyle(ThemeConfig.systemUiOverlayStyleLightThemeBlack);
        }
      }
    });
  }

  static void changeThemeLight() {
    //如果是深色模式才切换亮色模式
    Get.changeThemeMode(ThemeMode.light);
    Get.changeTheme(ThemeConfig.lightTheme);
    _updateTheme(false);
  }

  static void changeThemeDark() {
    //如果是亮色模式才切换深色模式
    Get.changeThemeMode(ThemeMode.dark);
    Get.changeTheme(ThemeConfig.darkTheme);
    _updateTheme(true);
  }
}