aman-satu-flutter/lib/views/dictionaries/goods/goods_view.dart

import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:satu/core/entity/category_entity.dart';
import 'package:satu/core/entity/goods_entity.dart';
import 'package:satu/core/models/dictionary/good_row_data.dart';
import 'package:satu/core/redux/actions/sell_actions.dart';
import 'package:satu/core/services/dictionary_service.dart';
import 'package:satu/core/services/navigator_service.dart';
import 'package:satu/core/utils/locator.dart';
import 'package:satu/routes/route_names.dart';
import 'package:satu/shared/app_colors.dart';
import 'package:satu/views/dictionaries/component/dictionary_list_tile.dart';
import 'package:satu/widgets/bar/products_app_bar.dart';
import 'package:satu/widgets/bar/products_title_bar.dart';
import 'package:satu/widgets/fields/input_field.dart';
import 'package:satu/widgets/ui/product_title_widget.dart';

class GoodsDictionaryView extends StatefulWidget {
  @override
  _GoodsDictionaryViewState createState() => _GoodsDictionaryViewState();
}

class _GoodsDictionaryViewState extends State<GoodsDictionaryView> {
  final DictionaryService _dictionaryService = locator<DictionaryService>();
  final NavigatorService _navigatorService = locator<NavigatorService>();
  late TextEditingController _searchTextController;
  final FocusNode _searchFocusNode = FocusNode();

  late List<Good> _goods = [];
  late List<Category> _categories = [];
  late List<GoodRowDao> items = [];

  @override
  void initState() {
    _searchTextController = TextEditingController();
    _searchTextController.addListener(() {
      if (_searchTextController.text.isNotEmpty) {
        searchByField(_searchTextController.text);
      } else {
        reset();
      }
    });
    initQuery();
    super.initState();
  }

  Future<void> initQuery() async {
    _goods = await _dictionaryService.getGoodsByNameOrEan('');
    _categories = await _dictionaryService.getCategoriesAll();
    searchByField('');
  }

  @override
  void dispose() {
    _searchTextController.dispose();
    _searchFocusNode.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: ProductsAppBar(
        title: 'Товары',
        drawerShow: true,
        actions: [
          ClipRRect(
            borderRadius: BorderRadius.circular(90),
            child: Material(
              color: Colors.transparent,
              child: InkWell(
                onTap: () {},
                child: Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: SvgPicture.asset(
                    'assets/images/svg/options.svg',
                    height: 20,
                    width: 20,
                    color: textColor,
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
      body: Column(
        children: [
          InputField(
            placeholder: 'Поиск по наименованию товара или штрих-код',
            search: true,
            controller: _searchTextController,
            fieldFocusNode: _searchFocusNode,
          ),
          const ProductsTitleBarBar(title: 'Список товаров'),
          Expanded(
            child: ListView.separated(
              physics: const BouncingScrollPhysics(),
              itemCount: items.length,
              itemBuilder: (BuildContext context, int index) {
                final GoodRowDao good = items[index];
                return DictionaryTile(
                  onPress: () {
                    locator<NavigatorService>()
                        .push(goodsEditRoute, arguments: good);
                  },
                  child: ProductTitleWidget(
                    name: good.name,
                    categoryName: good.categoryName,
                    ean: good.ean,
                  ),
                );
              },
              separatorBuilder: (BuildContext context, int index) {
                return const Divider(
                  height: 1.0,
                  color: disableColor,
                );
              },
            ),
          ),
        ],
      ),
      floatingActionButton: FloatingActionButton(
        elevation: 2,
        onPressed: () => locator<NavigatorService>()
            .push(goodsEditRoute, arguments: GoodRowDao('', '')),
        child: const Icon(
          Icons.add_rounded,
          size: 34.0,
          color: whiteColor,
        ),
      ),
    );
  }

  void reset() {
    _searchTextController.clear();
    searchByField('');
  }

  Future<void> searchByField(String query) async {
    log.i(query);
    final List<GoodRowDao> list = [];
    final Iterable<Good> filtered = query == ''
        ? _goods
        : _goods.where((element) =>
            element.name.toLowerCase().contains(query.toLowerCase()) ||
            (element.ean != null &&
                element.ean!.contains(query.toLowerCase())));
    filtered.forEach((element) {
      final Category category = _categories
          .firstWhere((parent) => parent.id == element.categoryId, orElse: () {
        return Category();
      });
      final String parentName = category.name;
      final GoodRowDao rowDao = GoodRowDao(element.name, parentName,
          ean: element.ean, id: element.id, categoryId: element.categoryId);
      list.add(rowDao);
    });
    setState(() {
      items = list;
    });
  }
}