mixin LoginLogic on Model {
  Map<String, dynamic> authData;
  final UtilityApi _api = UtilityApi();

  Future<dynamic> _makeRequest(
      {String method,
      String schoolCode,
      String username,
      String password,
      DateTime date}) async {
    if (date == null) date = DateTime.now();

    final headers = {
      'x-key-app': _api.apiKey,
      'x-version': _api.version,
      'user-agent': _api.userAgent,
      'x-cod-min': schoolCode ?? _api.schoolCode,
    };

    if (method != 'login') {
      headers.addAll({
        'x-auth-token': _api.token,
        'x-prg-alunno': _api.prgAlunno,
        'x-prg-scuola': _api.prgScuola,
        'x-prg-scheda': _api.prgScheda
      });
    } else {
      headers.addAll({'x-user-id': username, 'x-pwd': password});
    }

    http.Response response = await http.get(
        Uri(
          scheme: _api.apiUrl[0],
          host: _api.apiUrl[1],
          path: _api.apiUrl[2] + method,
          queryParameters: {
            "_dc": date.millisecondsSinceEpoch.toString(),
            "datGiorno":
                "${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}"
          },
        ),
        headers: headers);

    if (response.statusCode != 200) {
      throw new Exception(
          "$method failed\n${response.request}\n${response.statusCode} : ${response.body}");
    }
    final decoded = jsonDecode(response.body);
    return decoded;
  }

  Future _initClient({String schoolCode, String token}) async {
    assert(schoolCode != null && token != null);
    this._api.schoolCode = schoolCode;
    this._api.token = token;
    var response = await _makeRequest(method: "schede");
    print(response[0]);
    //school = new School.fromJson(response[0]);
    //student = new Student.fromJson(response[0]);

    //_api.prgScuola = school.schoolId.toString();
    //_api.prgAlunno = student.studentId.toString();
  }

  Future<String> login(
      String email, String schoolCode, String username, String password) async {
    authData = {
      'email': email,
      'schoolCode': schoolCode,
      'username': username,
      'password': password,
    };
    var jResponse = await _makeRequest(
        method: "login",
        schoolCode: authData['schoolCode'],
        username: authData['username'],
        password: authData['password']);

    assert(jResponse["token"] != null, 'Token is null');

    _api.schoolCode = authData['schoolCode'];
    _api.token = jResponse["token"];

    _storeValues(authData, _api.token);
    await _initClient(schoolCode: authData['schoolCode'], token: _api.token);
    print(_api.token);
    notifyListeners();
    return _api.token;
  }
}