Flutter http request simplified

request.dart

import 'dart:convert';

import 'package:http/http.dart' as http;

const String _host = "https://<....>";

class MyRequest {
  final String url;
  final Map<String, String> headers = {'Authorization': 'Bearer token'};

  Map<String, dynamic> _response;

  dynamic get data => _response.containsKey('data') ? _response['data'] : null;

  MyRequest(String path) : this.url = "$_host/$path";

  Future<Map<String, dynamic>> gets(String path,{Map<String, String> query}) async {
    String link = "$url";
    if (query != null) {
      final List<String> params = [];
      query.forEach((k, v) => params.add('$k=$v'));
      link += "?${params.join('&')}";
    }
    try {
      final http.Response response = await http.get(link, headers: headers);
      return _parseResponse(response.body);
    } catch (e) {
      print(e);
      return null;
    }
  }

  Future<Map<String, dynamic>> post(String path, Map<String, String> body) async {
    try {
      final http.Response response =
          await http.post(url, headers: headers, body: body);
      return _parseResponse(response.body);
    } catch (e) {
      print(e);
      return null;
    }
  }

  Map<String, dynamic> _parseResponse(String body) {
    print(body);
    try {
      Map<String, dynamic> res = json.decode(body);
      if (!res.containsKey('ok')) return null;
      if (res['ok'] != true) return null;
      _response = res;
      return res;
    } catch (e) {
      print(e);
      return null;
    }
  }
}