256 lines
8.5 KiB
Dart
256 lines
8.5 KiB
Dart
import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import 'package:flutter_project/components/extensions/context_x.dart';
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import 'package:flutter_project/components/locale/l10n/app_localizations.dart';
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import 'package:flutter_project/components/utils/debounce.dart';
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import 'package:flutter_project/domain/models/card.dart';
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import 'package:flutter_project/views/common/svg_objects.dart';
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import 'package:flutter_project/views/details_page/details_page.dart';
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import 'package:flutter_project/views/home_page/home_bloc/events.dart';
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import 'package:flutter_project/views/home_page/home_bloc/state.dart';
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import 'package:flutter_project/views/like_bloc/like_events.dart';
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import 'package:flutter_project/views/like_bloc/like_state.dart';
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import 'package:flutter_project/views/locale_bloc/locale_bloc.dart';
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import 'package:flutter_project/views/locale_bloc/locale_events.dart';
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import 'package:flutter_project/views/locale_bloc/locale_state.dart';
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import '../like_bloc/like_bloc.dart';
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import 'home_bloc/bloc.dart';
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part 'card.dart';
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class HomePage extends StatefulWidget {
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const HomePage({super.key});
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@override
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State<HomePage> createState() => _HomePageState();
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}
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class _HomePageState extends State<HomePage> {
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final body = Body();
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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title: Center(
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child: Text(
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context.locale.appBarTitle,
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),
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),
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),
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body: body);
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}
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}
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class Body extends StatefulWidget {
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const Body({super.key});
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@override
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State<Body> createState() => _BodyState();
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}
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class _BodyState extends State<Body> {
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final scrollController = ScrollController();
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final searchController = TextEditingController();
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bool isButtonToTopShown = false;
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@override
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void initState() {
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SvgObjects.init();
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WidgetsBinding.instance.addPostFrameCallback((_) {
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context.read<HomeBloc>().add(const HomeLoadDataEvent());
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context.read<LikeBloc>().add(const LoadLikesEvent());
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});
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scrollController.addListener(_viewListScrollListener);
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super.initState();
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}
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@override
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void dispose() {
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scrollController.dispose();
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searchController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Stack(children: [
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Column(
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children: [
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Row(
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children: [
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Expanded(
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child: Padding(
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padding: EdgeInsets.only(left: 16, top: 10, bottom: 10),
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child: Center(
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child: CupertinoSearchTextField(
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placeholder: context.locale.search,
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controller: searchController,
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onChanged: (search) {
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Debounce.run(() => context
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.read<HomeBloc>()
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.add(HomeLoadDataEvent(search: search)));
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},
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),
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),
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),
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),
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GestureDetector(
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onTap: () =>
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context.read<LocaleBloc>().add(const ChangeLocaleEvent()),
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: BlocBuilder<LocaleBloc, LocaleState>(
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builder: (context, state) {
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return AnimatedSwitcher(
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duration: const Duration(milliseconds: 250),
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child: state.currentLocale.languageCode == 'ru'
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? const SvgRu(key: ValueKey<int>(1))
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: const SvgUs(key: ValueKey<int>(0)));
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}),
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),
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)
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],
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),
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BlocConsumer<HomeBloc, HomeState>(
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listener: (context, state) {
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if (state.error != null) {
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_onErrorShowDialog(context, state);
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}
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},
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builder: (context, state) => state.isLoading
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? const CircularProgressIndicator()
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: BlocBuilder<LikeBloc, LikeState>(
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builder: (context, likeState) => Expanded(
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child: RefreshIndicator(
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onRefresh: _onRefresh,
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child: ListView.builder(
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controller: scrollController,
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padding: EdgeInsets.only(bottom: 10),
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itemCount: state.data?.data?.length ?? 0,
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itemBuilder: (context, index) {
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final data = state.data?.data?[index];
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return data != null
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? _Card.withData(context.locale, data,
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isLiked:
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likeState.likedIds?.contains(data.id) ==
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true,
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onLike: _onLike,
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onTap: () => _navToDetails(context, data))
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: const SizedBox.shrink();
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},
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),
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)),
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),
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),
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BlocBuilder<HomeBloc, HomeState>(
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builder: (context, state) => state.isPaginationLoading
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? const CircularProgressIndicator()
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: const SizedBox.shrink())
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],
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),
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BlocBuilder<HomeBloc, HomeState>(
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builder: (context, state) => state.isButtonToTopShown
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? Container(
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alignment: Alignment.topRight,
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padding: EdgeInsets.only(right: 16, top: 64),
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child: FloatingActionButton(
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onPressed: _goToTop,
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child: Icon(Icons.arrow_upward_rounded),
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))
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: SizedBox.shrink(),
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)
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]);
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}
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void _onLike(String? id, String title, bool isLiked) {
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if (id != null) {
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context.read<LikeBloc>().add(ChangeLikeEvent(id));
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_showSnackBar(context, !isLiked, title);
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}
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}
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void _onErrorShowDialog(BuildContext context, HomeState state) {
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showCupertinoDialog(
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context: context,
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builder: (_) => CupertinoAlertDialog(
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title: Text(context.locale.errorOccured),
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content: Text(state.error ?? context.locale.noErrorMsg),
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actions: <Widget>[
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CupertinoDialogAction(
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onPressed: () {
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Navigator.of(context).pop();
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context
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.read<HomeBloc>()
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.add(HomeLoadDataEvent(hasError: true));
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},
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child: Text(context.locale.retry))
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],
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));
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}
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void _goToTop() {
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scrollController.animateTo(
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0,
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duration: Duration(milliseconds: 300),
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curve: Curves.easeInOut,
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);
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}
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void _viewListScrollListener() {
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if (!context.read<HomeBloc>().state.isButtonToTopShown) {
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if (scrollController.offset >= 400) {
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context.read<HomeBloc>().add(HomeShowButtonToTopEvent(isShown: true));
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}
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} else {
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if (scrollController.offset < 400) {
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context.read<HomeBloc>().add(HomeShowButtonToTopEvent(isShown: false));
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}
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}
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if (scrollController.offset >= scrollController.position.maxScrollExtent) {
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final bloc = context.read<HomeBloc>();
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if (!bloc.state.isPaginationLoading &&
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bloc.state.data?.nextPage != null) {
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bloc.add(HomeLoadDataEvent(
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search: searchController.text,
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nextPage: bloc.state.data?.nextPage));
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}
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}
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}
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Future<void> _onRefresh() {
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context
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.read<HomeBloc>()
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.add(HomeLoadDataEvent(search: searchController.text));
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return Future.value(null);
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}
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void _showSnackBar(BuildContext context, bool isLiked, String title) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(
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content: Text(
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"${isLiked ? context.locale.liked : context.locale.unliked} $title",
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style: Theme.of(context).textTheme.bodyLarge,
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),
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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duration: const Duration(milliseconds: 1200),
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));
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});
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}
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void _navToDetails(BuildContext context, CardData d) {
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Navigator.push(
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context,
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CupertinoPageRoute(
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builder: (context) => DetailsPage(context.locale, d)));
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}
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}
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