Initialize MVVM architecture

lib/services/log_in_services.dart

@@ -0,0 +1,63 @@
+import 'dart:convert';
+import 'package:astronote_app/models/user_datas.dart';
+import 'package:astronote_app/models/credential.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:http/http.dart' as http;
+
+class LogIn with ChangeNotifier {
+  String _cookie;
+  Credential _userCredentials;
+
+  bool get isLog {
+    return token != null;
+  }
+
+  String get token {
+    if (_cookie != null) {
+      return _cookie;
+    }
+    return null;
+  }
+
+  Future<void> logIn(String url, String login, String password) async {
+    String urlApi = url + '/api/v1/login';
+
+    Map<String, String> headers = {
+      "X-Requested-With": "XMLHttpRequest",
+      "Content-Type": "application/json",
+    };
+    var body = json.encode({"login": login, "password": password});
+
+    final response = await http.post(urlApi, headers: headers, body: body);
+    if (response.statusCode == 200) {
+      // If the server did return a 20 0 OK response,
+      _cookie = response.headers['set-cookie'];
+      _userCredentials = new Credential(url: url, login: login, password: password);
+      print(_userCredentials.toString());
+      return recoverUserDatas(urlApi);
+    } else{
+      _cookie = null;
+      _userCredentials = null;
+    }
+    notifyListeners();
+  }
+
+  Future<void> recoverUserDatas(String url) async {
+    Map<String, String> headers = {
+      "X-Requested-With": "XMLHttpRequest",
+      "Cookie": _cookie
+    };
+
+    final response = await http.get(url, headers: headers);
+
+    if (response.statusCode == 200) {
+      // If the server did return a 200 OK response then parse the JSON.
+      final responseJson = json.decode(response.body);
+
+      UserDatas userDatas = new UserDatas.fromJson(responseJson['datas']);
+      print(userDatas.companies[0].toString());
+    }
+  }
+
+}