346 lines
11 KiB
Dart
346 lines
11 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'package:didvan/config/design_config.dart';
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import 'package:didvan/config/theme_data.dart';
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import 'package:didvan/constants/app_icons.dart';
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import 'package:didvan/models/enums.dart';
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import 'package:didvan/models/view/action_sheet_data.dart';
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import 'package:didvan/pages/home/radar/radar_state.dart';
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import 'package:didvan/pages/home/radar/widgets/categories_gird.dart';
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import 'package:didvan/pages/home/radar/widgets/categories_list.dart';
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import 'package:didvan/pages/home/radar/widgets/radar_item.dart';
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import 'package:didvan/widgets/animated_visibility.dart';
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import 'package:didvan/widgets/search_field.dart';
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import 'package:didvan/pages/home/widgets/logo_app_bar.dart';
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import 'package:didvan/utils/action_sheet.dart';
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import 'package:didvan/widgets/date_picker_button.dart';
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import 'package:didvan/widgets/didvan/card.dart';
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import 'package:didvan/widgets/didvan/checkbox.dart';
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import 'package:didvan/widgets/didvan/divider.dart';
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import 'package:didvan/widgets/didvan/text.dart';
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import 'package:didvan/widgets/item_title.dart';
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import 'package:didvan/widgets/shimmer_placeholder.dart';
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import 'package:didvan/widgets/state_handlers/empty_result.dart';
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import 'package:didvan/widgets/state_handlers/sliver_state_handler.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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class Radar extends StatefulWidget {
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const Radar({Key? key}) : super(key: key);
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@override
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State<Radar> createState() => _RadarState();
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}
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class _RadarState extends State<Radar> {
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final ScrollController _scrollController = ScrollController();
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final _focusNode = FocusNode();
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bool _isAnimating = false;
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Timer? _timer;
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@override
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void initState() {
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_scrollController.addListener(() {
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_handleAnimations();
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});
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final state = context.read<RadarState>();
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state.addListener(() {
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if (state.shouldColapse && mounted) {
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_handleAnimations(true);
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state.shouldColapse = false;
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}
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});
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state.init();
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super.initState();
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}
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@override
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Widget build(BuildContext context) {
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return Consumer<RadarState>(
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builder: (context, state, child) => Stack(
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children: [
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CustomScrollView(
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physics: _isAnimating ||
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(state.appState == AppState.busy && state.radars.isEmpty)
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? const NeverScrollableScrollPhysics()
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: const ScrollPhysics(),
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controller: _scrollController,
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slivers: [
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const SliverToBoxAdapter(child: LogoAppBar()),
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if (state.appState != AppState.failed)
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SliverPadding(
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padding: const EdgeInsets.only(
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left: 16,
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right: 16,
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bottom: 16,
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),
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sliver: SliverToBoxAdapter(
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child: SearchField(
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focusNode: _focusNode,
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isFiltered: state.filtering,
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title: 'رادار',
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onChanged: _onChanged,
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onFilterButtonPressed: _showFilterBottomSheet,
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),
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),
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),
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if (!state.filtering &&
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!state.searching &&
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state.appState != AppState.failed)
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const SliverToBoxAdapter(
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child: SizedBox(height: 276),
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),
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if (state.appState != AppState.failed)
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SliverPadding(
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padding: const EdgeInsets.only(right: 16, bottom: 20),
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sliver: SliverToBoxAdapter(
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child: Align(
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alignment: Alignment.centerRight,
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child: AnimatedVisibility(
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isVisible: !state.isColapsed &&
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!state.searching &&
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!state.filtering,
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duration: DesignConfig.lowAnimationDuration,
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child: DidvanText(
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'آخرین رصد',
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style: Theme.of(context).textTheme.subtitle1,
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color: Theme.of(context).colorScheme.title,
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),
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),
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),
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),
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),
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SliverStateHandler<RadarState>(
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onRetry: () => state.getRadarOverviews(page: state.page),
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state: state,
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itemPadding: const EdgeInsets.only(
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bottom: 20,
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left: 16,
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right: 16,
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),
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enableEmptyState: state.radars.isEmpty,
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emptyState:
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EmptyResult(onNewSearch: () => _focusNode.requestFocus()),
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placeholder: const _RadarItemPlaceholder(),
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builder: (context, state, index) => RadarItem(
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radar: state.radars[index],
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),
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childCount: state.radars.length,
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),
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if (state.radars.length == 1)
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const SliverToBoxAdapter(
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child: SizedBox(height: 320),
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),
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],
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),
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if (state.appState != AppState.failed)
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CategoriesRow1(
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isColapsed:
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state.isColapsed || state.searching || state.filtering,
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),
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if (state.appState != AppState.failed)
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CategoriesRow2(
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isColapsed:
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state.isColapsed || state.searching || state.filtering,
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),
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if (state.appState != AppState.failed)
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CategoriesList(
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isColapsed: state.isColapsed && !state.searching,
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),
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],
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),
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);
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}
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void _onChanged(String value) {
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final state = context.read<RadarState>();
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if (value.length < 4 && value.isNotEmpty || state.lastSearch == value) {
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return;
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}
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_timer?.cancel();
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_timer = Timer(const Duration(seconds: 1), () {
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state.search = value;
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state.getRadarOverviews(page: 1);
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});
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}
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void _handleAnimations([bool forceAnimate = false]) async {
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final state = context.read<RadarState>();
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if (_isAnimating || state.filtering || state.searching) return;
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final double position = _scrollController.offset;
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if (position > 5 && !state.isColapsed || forceAnimate) {
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state.isScrolled = true;
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_isAnimating = true;
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setState(() {});
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await _scrollController.animateTo(
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380,
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duration: DesignConfig.mediumAnimationDuration,
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curve: Curves.easeIn,
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);
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_isAnimating = false;
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setState(() {});
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} else if (position <
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min(_scrollController.position.maxScrollExtent, 380) &&
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state.isColapsed) {
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state.isScrolled = false;
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_isAnimating = true;
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setState(() {});
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await _scrollController.animateTo(
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0,
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duration: DesignConfig.mediumAnimationDuration,
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curve: Curves.easeIn,
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);
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_isAnimating = false;
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setState(() {});
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}
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}
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Future<void> _showFilterBottomSheet() async {
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final state = context.read<RadarState>();
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await ActionSheetUtils.showBottomSheet(
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data: ActionSheetData(
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title: 'فیلتر جستجو',
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smallDismissButton: true,
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titleIcon: DidvanIcons.filter_regular,
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dismissTitle: 'حذف فیلتر',
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confrimTitle: 'نمایش نتایج',
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onDismissed: () => state.resetFilters(false),
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onConfirmed: () => state.getRadarOverviews(page: 1),
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content: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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ItemTitle(
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title: 'تاریخ رادار',
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style: Theme.of(context).textTheme.bodyText2,
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icon: DidvanIcons.calendar_range_regular,
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),
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const SizedBox(height: 8),
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StatefulBuilder(
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builder: (context, setState) => Row(
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children: [
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DatePickerButton(
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initialValue: state.startDate,
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emptyText: 'از تاریخ',
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onPicked: (date) => setState(() => state.startDate = date),
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lastDate: state.endDate,
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),
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const SizedBox(width: 8),
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DatePickerButton(
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initialValue: state.endDate,
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emptyText: 'تا تاریخ',
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onPicked: (date) => setState(() => state.endDate = date),
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firstDate: state.startDate,
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),
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],
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),
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),
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const SizedBox(height: 28),
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ItemTitle(
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title: 'دسته بندی',
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icon: DidvanIcons.radar_regular,
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style: Theme.of(context).textTheme.bodyText2,
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),
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const SizedBox(height: 12),
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Wrap(
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children: [
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for (var i = 0; i < state.categories.length; i++)
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SizedBox(
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width: (MediaQuery.of(context).size.width - 40) / 2,
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child: DidvanCheckbox(
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title: state.categories[i].title,
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value: state.selectedCats.contains(state.categories[i]),
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onChanged: (value) {
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if (value) {
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state.selectedCats.add(state.categories[i]);
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return;
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}
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state.selectedCats.remove(state.categories[i]);
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},
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),
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),
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],
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),
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],
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),
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),
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);
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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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super.dispose();
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}
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}
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class _RadarItemPlaceholder extends StatelessWidget {
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const _RadarItemPlaceholder({
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Key? key,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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return DidvanCard(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const ShimmerPlaceholder(
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width: 200,
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height: 16,
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),
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const SizedBox(height: 8),
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const AspectRatio(aspectRatio: 16 / 9, child: ShimmerPlaceholder()),
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const SizedBox(height: 8),
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: const [
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ShimmerPlaceholder(
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height: 12,
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width: 70,
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),
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ShimmerPlaceholder(
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height: 12,
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width: 70,
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),
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],
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),
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const SizedBox(height: 8),
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const ShimmerPlaceholder(
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height: 16,
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),
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const SizedBox(height: 8),
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const ShimmerPlaceholder(
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height: 16,
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),
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const SizedBox(height: 8),
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const ShimmerPlaceholder(
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height: 16,
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),
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const DidvanDivider(),
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Row(
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children: const [
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ShimmerPlaceholder(
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height: 32,
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width: 32,
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),
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Spacer(),
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ShimmerPlaceholder(
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height: 32,
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width: 32,
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),
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SizedBox(width: 16),
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ShimmerPlaceholder(
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height: 32,
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width: 32,
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),
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],
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),
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],
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),
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);
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}
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}
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