import 'dart:convert';
import 'dart:math';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:hello_wallpaper/applovin_max/applovin_manage.dart';
import 'package:hello_wallpaper/common/components/view_state_widget.dart';
import 'package:hello_wallpaper/firebase/analytics_util.dart';
import 'package:hello_wallpaper/generated/assets.dart';
import 'package:hello_wallpaper/models/wallpaper_model.dart';
import 'package:hello_wallpaper/modules/catalog/catalog_controller.dart';
import 'package:hello_wallpaper/modules/catalog/catalog_view.dart';
import 'package:hello_wallpaper/modules/discover/discover_controller.dart';
import 'package:hello_wallpaper/modules/discover/discover_view.dart';
import 'package:hello_wallpaper/modules/favorite/favorite_controller.dart';
import 'package:hello_wallpaper/modules/favorite/favorite_view.dart';
import 'package:hello_wallpaper/routes/app_pages.dart';

class HomeController extends GetxController with WidgetsBindingObserver {
  static HomeController get to => Get.find<HomeController>();
  final pages = [
    PageItem('Discover', [Assets.imagesDiscoverUnchecked, Assets.imagesDiscoverSelected], const DiscoverView()),
    PageItem('Favorite', [Assets.imagesFavoriteUnchecked, Assets.imagesFavoriteSelected], const FavoriteView()),
    PageItem('Catalog', [Assets.imagesCatalogUnchecked, Assets.imagesCatalogSelected], const CatalogView()),
  ];
  late PageController pageController;
  var currentIndex = 0.obs;
  var wallpaperModelList = <WallpaperModel>[];
  var viewState = ViewState.loading;

  @override
  void onInit() {
    super.onInit();
    WidgetsBinding.instance.addObserver(this);
    pageController = PageController(initialPage: currentIndex.value);
    AnalyticsUtil.initializeFlutterFire();
  }

  @override
  void onReady() {
    super.onReady();
    _getAllData();
  }

  @override
  void onClose() {
    WidgetsBinding.instance.removeObserver(this);
    pageController.dispose();
    super.onClose();
  }

  @override
  Future<void> didChangeAppLifecycleState(AppLifecycleState state) async {
    switch (state) {
      case AppLifecycleState.resumed:
        await ApplovinManage().showAdIfReady(ApplovinManage().adUnitId1);
        break;
      case AppLifecycleState.inactive:
      case AppLifecycleState.hidden:
      case AppLifecycleState.paused:
      case AppLifecycleState.detached:
        break;
    }
  }

  /// PageView页面改变回调
  void onPageChanged(int index) {
    currentIndex.value = index;
  }

  /// 点击BottomNavigationBar
  void onTapNavigationBar(int index) {
    pageController.jumpToPage(index);
    ApplovinManage().showAdIfReady(ApplovinManage().adUnitId1);
  }

  /// 点击设置
  void onTapSettings() {
    Get.toNamed(AppPages.settings);
  }
  // void _showPopMenu(context) {
  //   showMenu(
  //     context: context,
  //     surfaceTintColor: Colors.white,
  //     position: RelativeRect.fromLTRB(double.infinity, statusToolBarHeight, 0.0, 0.0),
  //     items: [
  //       PopupMenuItem<String>(
  //         value: 'delete',
  //         onTap: deleteOnTap,
  //         child: const ListTile(
  //           leading: Icon(Icons.delete),
  //           title: Text('Delete All'),
  //         ),
  //       ),
  //     ],
  //   );
  // }

  /// 获取所有数据
  Future<void> _getAllData() async {
    // 读取json文件，获取数据
    var data = jsonDecode(await rootBundle.loadString(Assets.jsonLuxWallpaper));
    if (data != null && data is List) {
      wallpaperModelList = data.map((e) => WallpaperModel.fromJson(e)).toList();
      viewState = wallpaperModelList.isNotEmpty ? ViewState.normal : ViewState.empty;
    }
    if (Get.isRegistered<DiscoverController>()) {
      DiscoverController.to.getData();
    }
    if (Get.isRegistered<FavoriteController>()) {
      FavoriteController.to.getTodayHottestList();
    }
    if (Get.isRegistered<CatalogController>()) {
      CatalogController.to.getData();
    }
  }

  /// 随机取一个分类
  WallpaperModel? getRandomCls() {
    if (wallpaperModelList.isNotEmpty) {
      Random random = Random();
      int i = random.nextInt(wallpaperModelList.length);
      return wallpaperModelList[i];
    }
    return null;
  }
}

class PageItem {
  late final String label;
  late final List<String> icons;
  late final StatelessWidget widget;

  PageItem(this.label, this.icons, this.widget);
}