Data: API connection, API interface implementation and mapping implementation,dto addition

lib/data/dtos/candies_dto.dart

@@ -0,0 +1,66 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'candies_dto.g.dart';
+
+@JsonSerializable(createToJson: false)
+class CandiesResponseDto {
+  // Для пагинации
+  final int? totalCount;
+  final int? pageSize;
+  final int? currentPage;
+  final int? totalPages;
+
+  // Сами данные сущности
+  final List<CandyItemDto>? items;
+
+  const CandiesResponseDto(
+      {this.totalCount, this.pageSize, this.currentPage, this.totalPages, this.items});
+
+  factory CandiesResponseDto.fromJson(Map<String, dynamic> json) =>
+      _$CandiesResponseDtoFromJson(json);
+}
+
+@JsonSerializable(createToJson: false)
+class CandyItemDto {
+  final int? beanId;
+  final List<String>? groupName;
+  final List<String>? ingredients;
+  final String? flavorName;
+  final String? description;
+  final String? colorGroup;
+  final String? backgroundColor;
+  final String? imageUrl;
+  final bool? glutenFree;
+  final bool? sugarFree;
+  final bool? seasonal;
+  final bool? kosher;
+
+  const CandyItemDto(
+      {this.beanId,
+      this.groupName,
+      this.ingredients,
+      this.flavorName,
+      this.description,
+      this.colorGroup,
+      this.backgroundColor,
+      this.imageUrl,
+      this.glutenFree,
+      this.sugarFree,
+      this.seasonal,
+      this.kosher});
+
+  factory CandyItemDto.fromJson(Map<String, dynamic> json) => _$CandyItemDtoFromJson(json);
+}
+
+extension CandiesResponseDtoExtensions on CandiesResponseDto {
+  CandiesResponseDto copyWithFilteredItems(List<CandyItemDto>? items) {
+    return CandiesResponseDto(
+      totalCount: items?.length,
+      pageSize: pageSize,
+      currentPage: currentPage,
+      totalPages: totalPages,
+      items: items,
+    );
+  }
+}
+

lib/data/mapper/candies_mapper.dart

@@ -0,0 +1,24 @@
+import 'package:candystore/data/dtos/candies_dto.dart';
+import 'package:candystore/models/card_data.dart';
+import 'package:candystore/models/candy_data.dart';
+
+extension CandyItemDtoToModel on CandyItemDto {
+  CardData toDomain() => CardData(
+      flavorName: flavorName ?? "UNKNOWN",
+      imageUrl: imageUrl ??
+          "https://upload.wikimedia.org/wikipedia/commons/a/a2/Person_Image_Placeholder.png",
+      description: description ?? "UNKNOWN",
+      groupName: groupName ?? ["UNKNOWN"],
+      beanId: beanId);
+}
+
+extension CandiesDtoToModel on CandiesResponseDto {
+  CandyData toDomain() => CandyData(
+        data: items?.map((e) => e.toDomain()).toList(),
+        nextPage: currentPage != null && totalPages != null && currentPage! < totalPages!
+            ? currentPage! + 1
+            : null,
+        currentPage: currentPage,
+        totalPages: totalPages,
+      );
+}

lib/data/repositories/api_interface.dart

@@ -0,0 +1,7 @@
+import 'package:candystore/models/candy_data.dart';
+
+typedef OnErrorCallback = void Function(String? error);
+
+abstract class ApiInterface {
+  Future<CandyData?> loadData({OnErrorCallback? onError});
+}

lib/data/repositories/candy_repository.dart

@@ -0,0 +1,55 @@
+import 'dart:developer';
+import 'package:dio/dio.dart';
+import 'package:pretty_dio_logger/pretty_dio_logger.dart';
+
+import 'package:candystore/data/dtos/candies_dto.dart';
+import 'package:candystore/data/mapper/candies_mapper.dart';
+import 'package:candystore/data/repositories/api_interface.dart';
+import 'package:candystore/models/candy_data.dart';
+
+class CandyRepository extends ApiInterface {
+  static final Dio _dio = Dio(BaseOptions(connectTimeout: const Duration(seconds: 10)))
+    ..interceptors.add(PrettyDioLogger(request: true, requestHeader: true, requestBody: true));
+
+  static const String _baseUrl = "https://jellybellywikiapi.onrender.com/api";
+
+  @override
+  Future<CandyData?> loadData(
+      {OnErrorCallback? onError, String? q, int page = 1, int pageSize = 10}) async {
+    try {
+      const String url = '$_baseUrl/Beans?';
+
+      final Response<dynamic> response = await _dio.get<Map<dynamic, dynamic>>(
+        url,
+        queryParameters: {
+          'pageIndex': page,
+          'pageSize': pageSize},
+      );
+
+      final CandiesResponseDto dto =
+          CandiesResponseDto.fromJson(response.data as Map<String, dynamic>);
+
+      // Если `q` указан, фильтруем данные
+      List<CandyItemDto>? filteredItems;
+      if (q != null && q.isNotEmpty) {
+        final query = q.toLowerCase();
+        filteredItems = dto.items?.where((item) {
+          final flavorName = item.flavorName?.toLowerCase() ?? '';
+          return flavorName.contains(query); // Динамическое совпадение
+        }).toList();
+      }
+
+      // Создаём новый объект с отфильтрованными элементами (или возвращаем полный список)
+      final filteredDto = dto.copyWithFilteredItems(filteredItems ?? dto.items);
+
+      return filteredDto.toDomain();
+    } on DioException catch (e) {
+      log("DioException: $e");
+      onError?.call(e.error?.toString());
+      return null;
+    } catch (e) {
+      log('Unknown error: $e');
+      return null;
+    }
+  }
+}