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gistfile1.txt

// product_res_dm.dart

import 'package:flutter/foundation.dart';
import 'package:json_annotation/json_annotation.dart';

part 'product_res_dm.g.dart';

/// Response model for GET /api/v1/products/{id}
@JsonSerializable()
@immutable
class ProductResDm {
  const ProductResDm({
    required this.id,
    required this.title,
    required this.slug,
    required this.price,
    required this.description,
    required this.category,
    required this.images,
    required this.creationAt,
    required this.updatedAt,
  });

  factory ProductResDm.fromJson(Map<String, dynamic> json) =>
      _$ProductResDmFromJson(json);

  final int id;
  final String title;
  final String slug;
  final int price;
  final String description;
  final CategoryDm category;
  final List<String> images;
  final DateTime creationAt;
  final DateTime updatedAt;

  Map<String, dynamic> toJson() => _$ProductResDmToJson(this);
}

/// Nested model for category in ProductResDm
@JsonSerializable()
@immutable
class CategoryDm {
  const CategoryDm({
    required this.id,
    required this.name,
    required this.slug,
    required this.image,
    required this.creationAt,
    required this.updatedAt,
  });

  factory CategoryDm.fromJson(Map<String, dynamic> json) =>
      _$CategoryDmFromJson(json);

  final int id;
  final String name;
  final String slug;
  final String image;
  final DateTime creationAt;
  final DateTime updatedAt;

  Map<String, dynamic> toJson() => _$CategoryDmToJson(this);
}


// products_api_service.dart

import 'package:dio/dio.dart';
import 'package:retrofit/retrofit.dart';

import 'models/product_res_dm.dart';

part 'products_api_service.g.dart';

/// Custom API service for Platzi Fake Store API
/// Base URL: https://api.escuelajs.co
@RestApi()
abstract class ProductsApiService {
  factory ProductsApiService(Dio dio, {String? baseUrl}) = _ProductsApiService;

  /// Get product by ID
  @GET('/api/v1/products/{id}')
  Future<ProductResDm> getProductById(@Path('id') int id);
}

// products_repository.dart

import 'package:dio/dio.dart';

import '../../../models/api_response/api_result.dart';
import '../../../models/exceptions/network_exception.dart';
import 'models/product_res_dm.dart';
import 'products_api_service.dart';

/// Repository for Platzi Fake Store API products
class ProductsRepository {
  ProductsRepository._()
      : _apiService = ProductsApiService(
          Dio(BaseOptions(baseUrl: 'https://api.escuelajs.co')),
        );

  static final ProductsRepository instance = ProductsRepository._();

  final ProductsApiService _apiService;

  /// Get product by ID
  Future<ApiResult<ProductResDm>> getProductById(int id) async {
    try {
      final response = await _apiService.getProductById(id);
      return ApiSuccess<ProductResDm>(data: response);
    } catch (e, s) {
      return ApiFailure(NetworkException.fromError(e, s));
    }
  }
}