didvan-app/lib/views/home/home.dart

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';
import 'package:flutter_animate/flutter_animate.dart';
import 'package:didvan/config/design_config.dart';
import 'package:didvan/models/view/action_sheet_data.dart';
import 'package:didvan/providers/theme.dart';
import 'package:didvan/services/app_initalizer.dart';
import 'package:didvan/services/app_home_widget/home_widget_repository.dart';
import 'package:didvan/utils/action_sheet.dart';
import 'package:didvan/views/home/explore/explore.dart';
import 'package:didvan/views/home/main/main_page.dart';
import 'package:didvan/views/home/media/media_page.dart';
import 'package:didvan/views/home/home_state.dart';
import 'package:didvan/views/home/new_statistic/new_statistic.dart';
import 'package:didvan/views/home/search/search.dart';
import 'package:didvan/views/ai_section/ai_section_page.dart';
import 'package:didvan/views/widgets/didvan/text.dart';
import 'package:didvan/views/widgets/didvan/bnb.dart';

final GlobalKey<ScaffoldState> homeScaffKey = GlobalKey<ScaffoldState>();

class Home extends StatefulWidget {
  final bool? showDialogs;
  const Home({Key? key, this.showDialogs}) : super(key: key);

  @override
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home>
    with SingleTickerProviderStateMixin, WidgetsBindingObserver {
  late final TabController _tabController;

  @override
  void initState() {
    super.initState();
    final state = context.read<HomeState>();
    DesignConfig.updateSystemUiOverlayStyle();

    _tabController = TabController(length: 5, vsync: this, initialIndex: 0);
    state.tabController = _tabController;

    _tabController.addListener(() {
      state.currentPageIndex = _tabController.index;
    });

    if (!kIsWeb) {
      Future.microtask(() async {
        await HomeWidgetRepository.fetchWidget();
        await HomeWidgetRepository.decideWhereToGo();
        if (HomeWidgetRepository.data != null) {
          await HomeWidgetRepository.decideWhereToGoNotif();
        }
        if (mounted) {
          AppInitializer.handleCLick(state, _tabController);
        }
      });
    }

    state.refresh();
    context.read<ThemeProvider>().addListener(() {
      if (mounted) state.refresh();
    });
  }

  Future<void> _handleBackPress() async {
    if (context.read<HomeState>().tabController.index == 0) {
      if (kIsWeb) {
        return;
      }
      ActionSheetUtils(context).openDialog(
        data: ActionSheetData(
          content: const DidvanText('آیا قصد خروج از برنامه را دارید؟'),
          onConfirmed: () {
            SystemChannels.platform.invokeMethod('SystemNavigator.pop');
          },
          isBackgroundDropBlur: true,
          confrimTitle: 'بله',
          dismissTitle: 'خیر',
        ),
      );
    } else {
      _tabController.animateTo(0);
    }
  }

  @override
  Widget build(BuildContext context) {
    return PopScope(
      canPop: false,
      // ignore: deprecated_member_use
      onPopInvoked: (didPop) async {
        if (didPop) return;
        await _handleBackPress();
      },
      child: Scaffold(
        key: homeScaffKey,
        backgroundColor: Theme.of(context).colorScheme.surface,
        resizeToAvoidBottomInset: false,
        body: Consumer<HomeState>(
          builder: (context, state, child) => AnimatedCrossFade(
            duration: DesignConfig.lowAnimationDuration,
            crossFadeState: state.filtering
                ? CrossFadeState.showSecond
                : CrossFadeState.showFirst,
            firstChild: SizedBox(
              height: MediaQuery.of(context).size.height,
              width: MediaQuery.of(context).size.width,
              child: TabBarView(
                physics: const NeverScrollableScrollPhysics(),
                controller: _tabController,
                children: const [
                  MainPage(),
                  MediaPage(),
                  NewStatistic(),
                  ExplorePage(),
                  AiSectionPage(),
                ],
              ),
            ),
            secondChild: const SearchPage(),
          ),
        ),
        bottomNavigationBar: Consumer<HomeState>(
          builder: (context, state, child) => DidvanBNB(
            currentTabIndex: state.currentPageIndex,
            onTabChanged: (index) {
              if (index < _tabController.length) {
                state.currentPageIndex = index;
                FocusScope.of(context).unfocus();
                state.resetFilters(false);
                _tabController.animateTo(index);
              }
            },
          ),
        ).animate().slideY(
              duration: 500.ms,
              begin: 1,
              curve: Curves.easeOut,
            ),
      ),
    );
  }
}