[SC] [DBAPI] apiClient.dart

import 'dart:async';
import 'dart:convert';
import 'package:path/path.dart';
import '../models/dog.dart';
import 'package:http/http.dart' as http;

class ApiClient {
  String _url = "https://5fb5817d36e2fa00166a462d.mockapi.io";

  Future<Dog> insertDog(Dog dog) async {
    final response = await http.post(
      join(_url, 'dogs'),

      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },

      body: jsonEncode(<String, dynamic>{
        'name': dog.name,
        'age': dog.age,
      }),
    );

    if (response.statusCode == 201) {
      return Dog.fromMap(jsonDecode(response.body));
    }
    else {
      throw Exception('Falha ao salvar dado na API');
    }
  }

  Future<Dog> updateDog(Dog dog) async {
    final response = await http.put(
      join(_url, 'dogs/${dog.id}'),

      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },

      body: jsonEncode(<String, dynamic>{
        'name': dog.name,
        'age': dog.age,
      }),
    );

    if (response.statusCode == 200) {
      return Dog.fromMap(jsonDecode(response.body));
    }
    else {
      throw Exception('Falha ao atualizar um dado na API!');
    }
  }

  Future<Dog> getDog(String id) async {
    final response = await http.get(
        join(_url, 'dogs/$id'));

    if (response.statusCode == 200) {
      return Dog.fromMap(jsonDecode(response.body));
    }
    else {
      throw Exception('Falha ao carregar dados da API!');
    }
  }

  Future<List<Dog>> getDogs() async {
    final response = await http.get(
        join(_url, 'dogs'));

    List<Dog> listDogs;

    if (response.statusCode == 200) {
      final List dogs = jsonDecode(response.body);
      listDogs = List.generate(dogs.length, (i) {
        return Dog.fromMap(dogs[i]);
      });
      return listDogs;
    }
    else {
      throw Exception('Falha ao carregar dados da API!');
    }
  }

  Future deleteDog(String id) async {
    final response = await http.delete(
      join(_url, 'dogs/$id'),

      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode != 200) {
      throw Exception('Falha ao deletar o registro Dog com id=$id!');
    }
  }

  Future deleteAllDogs() async {
    final List<Dog> dogs = await getDogs();

    for (Dog dog in dogs) {
      final response = await http.delete(
        join(_url, 'dogs/${dog.id}'),

        headers: <String, String>{
          'Content-Type': 'application/json; charset=UTF-8',
        },
      );

      if (response.statusCode != 200) {
        throw Exception('Falha ao deletar o registro Dog com id=${dog.id}!');
      }
    }
  }
}