505 lines
16 KiB
Dart
505 lines
16 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'package:didvan/constants/app_icons.dart';
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import 'package:didvan/models/category.dart';
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import 'package:didvan/models/enums.dart';
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import 'package:didvan/models/requests/radar.dart';
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import 'package:didvan/models/view/action_sheet_data.dart';
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import 'package:didvan/views/radar/radar_state.dart';
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import 'package:didvan/views/widgets/date_picker_button.dart';
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import 'package:didvan/views/widgets/didvan/scaffold.dart';
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import 'package:didvan/utils/action_sheet.dart';
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import 'package:didvan/views/widgets/overview/radar.dart';
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import 'package:didvan/views/widgets/didvan/checkbox.dart';
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import 'package:didvan/views/widgets/item_title.dart';
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import 'package:didvan/views/widgets/state_handlers/empty_result.dart';
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import 'package:didvan/views/widgets/state_handlers/sliver_state_handler.dart';
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import 'package:didvan/views/widgets/home_app_bar.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_svg/flutter_svg.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() => _RadarStateView();
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}
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class _RadarStateView extends State<Radar> {
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Timer? _timer;
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final _focusNode = FocusNode();
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@override
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void initState() {
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context.read<RadarState>().init();
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super.initState();
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}
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String _getCategoryIcon(int categoryId, bool isDark) {
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switch (categoryId) {
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case 1:
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return 'lib/assets/icons/New_Economic.svg';
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case 2:
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return 'lib/assets/icons/New_Siasi.svg';
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case 3:
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return 'lib/assets/icons/New_Fanavari.svg';
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case 4:
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return 'lib/assets/icons/New_Kasbokar.svg';
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case 5:
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return 'lib/assets/icons/New_ZistMohit.svg';
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case 6:
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return 'lib/assets/icons/New_Ejtemaei.svg';
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default:
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return 'lib/assets/icons/Kasb o Kar.svg';
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}
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}
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@override
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Widget build(BuildContext context) {
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final state = context.watch<RadarState>();
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final theme = Theme.of(context);
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final colorScheme = theme.colorScheme;
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final isDark = theme.brightness == Brightness.dark;
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final showCategories = !state.filtering && !state.searching;
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return DidvanScaffold(
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padding: EdgeInsets.zero,
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appBarData: null,
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slivers: [
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SliverToBoxAdapter(
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child: Padding(
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padding: const EdgeInsets.only(top: 12.0),
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child: HomeAppBar(
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showBackButton: false,
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showSearchField: state.appState != AppState.failed,
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onSearchChanged: _onChanged,
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onFilterPressed: _showFilterBottomSheet,
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searchFocusNode: _focusNode,
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isFiltered: state.filtering,
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searchValue: state.search,
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),
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),
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),
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SliverAppBar(
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pinned: true,
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automaticallyImplyLeading: false,
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backgroundColor: colorScheme.surface,
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elevation: 0,
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centerTitle: false,
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titleSpacing: 16,
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title: Text(
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'پویش افق',
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style: theme.textTheme.headlineSmall?.copyWith(
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color: isDark
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? Colors.white
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: const Color.fromARGB(255, 0, 53, 70),
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fontWeight: FontWeight.bold,
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fontSize: 19),
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),
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actions: [
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IconButton(
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onPressed: () => Navigator.of(context).pop(),
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icon: SvgPicture.asset(
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'lib/assets/icons/arrow-left.svg',
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width: 30,
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height: 30,
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colorFilter: ColorFilter.mode(
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isDark
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? Colors.white70
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: const Color.fromARGB(255, 102, 102, 102),
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BlendMode.srcIn),
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),
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),
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const SizedBox(width: 8),
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],
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),
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const SliverToBoxAdapter(
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child: SizedBox(
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height: 16,
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),
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),
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SliverToBoxAdapter(
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child: AnimatedSwitcher(
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duration: const Duration(milliseconds: 500),
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switchInCurve: Curves.easeOutCubic,
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switchOutCurve: Curves.easeInCubic,
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transitionBuilder: (Widget child, Animation<double> animation) {
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return SizeTransition(
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sizeFactor: animation,
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axisAlignment: -1.0,
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child: FadeTransition(
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opacity: animation,
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child: child,
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),
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);
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},
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child: showCategories
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? Column(
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key: const ValueKey('categories_column'),
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children: [
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if (state.categories.length >= 3)
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 20),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: state.categories
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.sublist(0, 3)
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.map((category) => _buildCoolCategoryItem(
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category, isDark, state, theme))
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.toList(),
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),
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),
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if (state.categories.length >= 6)
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Padding(
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padding: const EdgeInsets.only(
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top: 12, left: 20, right: 20),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: state.categories
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.sublist(3, 6)
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.map((category) => _buildCoolCategoryItem(
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category, isDark, state, theme))
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.toList(),
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),
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),
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const SizedBox(height: 20),
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],
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)
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: const SizedBox.shrink(key: ValueKey('empty_categories')),
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),
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),
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SliverStateHandler<RadarState>(
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centerEmptyState: false,
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onRetry: () => state.getRadars(page: state.page),
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state: state,
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childCount: min(state.visibleCount, state.radars.length) +
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(_hasMoreItems(state) ? 1 : 0),
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builder: (context, state, index) {
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final currentDisplayCount =
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min(state.visibleCount, state.radars.length);
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if (index == currentDisplayCount && _hasMoreItems(state)) {
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return _buildLoadMoreButton(context, state);
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}
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if (index >= state.radars.length) {
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return _SlideFadeTransition(
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index: index, child: RadarOverview.placeholder);
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}
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final radar = state.radars[index];
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return _SlideFadeTransition(
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index: index,
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child: RadarOverview(
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radar: radar,
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onMarkChanged: state.changeMark,
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onLikedChanged: state.changeLike,
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onCommentsChanged: (id, count) =>
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state.onCommentsChanged(id, count),
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radarRequestArgs: RadarRequestArgs(
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page: state.page,
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categories:
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List.from(state.selectedCats.map((cat) => cat.id)),
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endDate: state.endDate,
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isSingleItem: false,
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search: state.search,
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startDate: state.startDate,
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),
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),
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);
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},
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enableEmptyState:
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state.radars.isEmpty && state.appState != AppState.busy,
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emptyState: EmptyResult(
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onNewSearch: () => _focusNode.requestFocus(),
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),
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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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placeholder:
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_SlideFadeTransition(index: 0, child: RadarOverview.placeholder),
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),
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],
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);
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}
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bool _hasMoreItems(RadarState state) {
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return state.radars.length > state.visibleCount ||
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state.page < state.lastPage;
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}
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Widget _buildLoadMoreButton(BuildContext context, RadarState state) {
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if (state.appState == AppState.busy &&
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state.radars.length <= state.visibleCount) {
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return const Padding(
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padding: EdgeInsets.all(16.0),
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child: Center(child: CircularProgressIndicator()),
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);
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}
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 16.0, horizontal: 16.0),
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child: Center(
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child: GestureDetector(
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onTap: () {
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state.loadMore();
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},
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child: Container(
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padding: const EdgeInsets.symmetric(
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horizontal: 50.0,
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vertical: 12.0,
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),
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decoration: BoxDecoration(
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color: const Color.fromARGB(255, 0, 126, 167),
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borderRadius: BorderRadius.circular(15),
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),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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SvgPicture.asset(
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'lib/assets/icons/element-plus.svg',
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colorFilter:
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const ColorFilter.mode(Colors.white, BlendMode.srcIn),
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width: 20,
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),
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const SizedBox(width: 8),
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const Text(
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'بارگذاری بیشتر',
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style: TextStyle(
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color: Colors.white,
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fontSize: 14,
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fontWeight: FontWeight.bold,
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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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Widget _buildCoolCategoryItem(
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CategoryData category, bool isDark, RadarState state, ThemeData theme) {
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final isSelected =
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state.selectedCats.any((element) => element.id == category.id);
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category.asset = _getCategoryIcon(category.id, isDark);
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return Expanded(
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child: GestureDetector(
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onTap: () => _onCategorySelected(category),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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AnimatedContainer(
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duration: const Duration(milliseconds: 300),
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curve: Curves.fastOutSlowIn,
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padding: EdgeInsets.zero,
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decoration: BoxDecoration(
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color: isSelected
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? theme.colorScheme.primary.withOpacity(0.1)
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: Colors.transparent,
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borderRadius: BorderRadius.circular(30),
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border: Border.all(
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color: isSelected
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? theme.colorScheme.primary
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: Colors.transparent,
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width: 2,
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),
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),
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child: ClipRRect(
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borderRadius: BorderRadius.circular(30),
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child: SvgPicture.asset(
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category.asset!,
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width: 100,
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height: 100,
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),
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),
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),
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const SizedBox(height: 8),
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Text(
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category.label,
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textAlign: TextAlign.center,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: theme.textTheme.bodySmall?.copyWith(
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color: theme.colorScheme.primary,
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fontWeight: isSelected ? FontWeight.bold : FontWeight.bold,
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fontSize: 15,
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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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void _onChanged(String value) {
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final state = context.read<RadarState>();
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if (value.length < 3 && 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.getRadars(page: 1);
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});
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}
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void _onCategorySelected(CategoryData category) {
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final state = context.read<RadarState>();
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final isAlreadySelected =
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state.selectedCats.any((cat) => cat.id == category.id);
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state.selectedCats.clear();
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if (!isAlreadySelected && category.id != 0) {
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state.selectedCats.add(category);
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}
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state.getRadars(page: 1);
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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(context).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.getRadars(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 ایجاد',
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style: Theme.of(context).textTheme.bodyMedium,
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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.category_regular,
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style: Theme.of(context).textTheme.bodyMedium,
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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].label,
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value: state.selectedCats
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.any((cat) => cat.id == state.categories[i].id),
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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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} else {
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state.selectedCats.removeWhere(
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(cat) => cat.id == state.categories[i].id);
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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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}
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@override
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void dispose() {
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_focusNode.dispose();
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super.dispose();
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}
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}
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class _SlideFadeTransition extends StatefulWidget {
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final Widget child;
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final int index;
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const _SlideFadeTransition({
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Key? key,
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required this.child,
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required this.index,
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}) : super(key: key);
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@override
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State<_SlideFadeTransition> createState() => _SlideFadeTransitionState();
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}
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class _SlideFadeTransitionState extends State<_SlideFadeTransition>
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with SingleTickerProviderStateMixin {
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late final AnimationController _controller;
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late final Animation<double> _opacity;
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late final Animation<Offset> _offset;
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@override
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void initState() {
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super.initState();
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_controller = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 600),
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);
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_opacity = CurvedAnimation(parent: _controller, curve: Curves.easeOut);
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_offset = Tween<Offset>(begin: const Offset(0, 0.1), end: Offset.zero)
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.animate(
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CurvedAnimation(parent: _controller, curve: Curves.easeOutCubic));
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Future.delayed(Duration(milliseconds: 50 * (widget.index % 5)), () {
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if (mounted) {
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_controller.forward();
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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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_controller.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 FadeTransition(
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opacity: _opacity,
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child: SlideTransition(
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position: _offset,
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child: widget.child,
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),
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);
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}
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}
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