add BankAccount model to manage address data

firka/android/app/build.gradle

@@ -39,7 +39,7 @@ android {
         applicationId = 'hu.qwit.firka'
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
-        minSdk = flutter.minSdkVersion
+        minSdk = 23 // bump minSdk version to android 6, since isar db requires minSdk 23
         targetSdk = flutter.targetSdkVersion
         versionCode = flutter.versionCode
         versionName = flutter.versionName
@@ -63,4 +63,4 @@ android {
 
 flutter {
     source = '../..'
-}
+}

firka/lib/helpers/api/consts.dart

@@ -1,6 +1,10 @@
+class Constants {
+  static const clientId = "kreta-ellenorzo-student-mobile-ios";
+}
+
 class KretaEndpoints {
   static String kreta(String iss) => "https://$iss.e-kreta.hu";
   static const kretaIdp = "https://idp.e-kreta.hu";
   static const kretaLoginUrl = "https://idp.e-kreta.hu/Account/Login?ReturnUrl=%2Fconnect%2Fauthorize%2Fcallback%3Fprompt%3Dlogin%26nonce%3DwylCrqT4oN6PPgQn2yQB0euKei9nJeZ6_ffJ-VpSKZU%26response_type%3Dcode%26code_challenge_method%3DS256%26scope%3Dopenid%2520email%2520offline_access%2520kreta-ellenorzo-webapi.public%2520kreta-eugyintezes-webapi.public%2520kreta-fileservice-webapi.public%2520kreta-mobile-global-webapi.public%2520kreta-dkt-webapi.public%2520kreta-ier-webapi.public%26code_challenge%3DHByZRRnPGb-Ko_wTI7ibIba1HQ6lor0ws4bcgReuYSQ%26redirect_uri%3Dhttps%253A%252F%252Fmobil.e-kreta.hu%252Fellenorzo-student%252Fprod%252Foauthredirect%26client_id%3Dkreta-ellenorzo-student-mobile-ios%26state%3Drefilc_student_mobile%26suppressed_prompt%3Dlogin";
-
+  static const tokenGrantUrl = "https://idp.e-kreta.hu/connect/token";
 }

firka/lib/helpers/api/model/bank_account.dart

@@ -0,0 +1,9 @@
+class BankAccount {
+
+  final List<String> addressDataList;
+
+  BankAccount({
+    required this.addressDataList
+  });
+
+}

firka/lib/helpers/api/resp/token_grant.dart

@@ -0,0 +1,28 @@
+class TokenGrantResponse {
+  final String idToken;
+  final String accessToken;
+  final int expiresIn;
+  final String tokenType;
+  final String refreshToken;
+  final String scope;
+
+  TokenGrantResponse({
+    required this.idToken,
+    required this.accessToken,
+    required this.expiresIn,
+    required this.tokenType,
+    required this.refreshToken,
+    required this.scope
+  });
+
+  factory TokenGrantResponse.fromJson(Map<String, dynamic> json) {
+    return TokenGrantResponse(
+      idToken: json['id_token'],
+      accessToken: json['access_token'],
+      expiresIn: json['expires_in'],
+      tokenType: json['token_type'],
+      refreshToken: json['refresh_token'],
+      scope: json['scope']
+    );
+  }
+}

firka/lib/helpers/api/tokenGrant.dart

@@ -1,9 +0,0 @@
-import 'package:dio/dio.dart';
-
-final dio = Dio();
-
-Future<String?> getAccessToken({
-  required String code,
-
-
-}

firka/lib/helpers/api/token_grant.dart

@@ -0,0 +1,40 @@
+import 'package:dio/dio.dart';
+import 'package:firka/helpers/api/resp/token_grant.dart';
+import 'consts.dart';
+
+final dio = Dio();
+
+Future<TokenGrantResponse> getAccessToken(String code) async {
+  // request to the KretaEndpoints.tokenGrantUrl endpoint
+
+  final headers = const <String, String>{
+    "content-type": "application/x-www-form-urlencoded; charset=UTF-8",
+    "accept": "*/*",
+    "user-agent": "eKretaStudent/264745 CFNetwork/1494.0.7 Darwin/23.4.0",
+  };
+
+  final formData = <String, String>{
+    "code": code,
+    "code_verifier": "DSpuqj_HhDX4wzQIbtn8lr8NLE5wEi1iVLMtMK0jY6c",
+    "redirect_uri": "https://mobil.e-kreta.hu/ellenorzo-student/prod/oauthredirect",
+    "client_id": Constants.clientId,
+    "grant_type": "authorization_code",
+  };
+  
+  try {
+    final response = await dio.post(KretaEndpoints.tokenGrantUrl, options: Options(headers: headers), data: formData);
+
+    switch (response.statusCode) {
+      case 200:
+        return TokenGrantResponse.fromJson(response.data);
+      case 401:
+        throw Exception("Invalid grant");
+      default:
+        throw Exception("Failed to get access token, response code: ${response.statusCode}");
+    }
+  } catch (e) {
+    rethrow;
+  }
+
+  
+}

firka/lib/helpers/db/models/token_model.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/foundation.dart';
+import 'package:isar/isar.dart';
+part 'token_model.g.dart';
+
+class TokenModel {
+  Id id = Isar.autoIncrement; // Auto-increment internal ID
+
+  @Index(unique: true, replace: true)
+  int? StudentId; // Custom unique student identifier
+
+  String? tokenId; // Unique identifier for the token if needed
+  String? accessToken; // The main auth token
+  String? refreshToken; // Token used to refresh the access token
+  DateTime? expiryDate; // When the token expires
+}

firka/lib/helpers/db/token_service.dart

@@ -0,0 +1,21 @@
+import 'package:isar/isar.dart';
+import 'package:path_provider/path_provider.dart';
+import 'models/token_model.dart';
+
+class TokenService {
+  late Future<Isar> db;
+
+  // Initialize the database
+  TokenService() {
+    db = openDB();
+  }
+
+  // Open the Isar database
+  Future<Isar> openDB() async {
+    final dir = await getApplicationDocumentsDirectory();
+    return await Isar.open(
+      [TokenModelSchema],
+      directory: dir.path,
+    );
+  }
+}

firka/pubspec.yaml

@@ -29,6 +29,9 @@ environment:
 # dependencies can be manually updated by changing the version numbers below to
 # the latest version available on pub.dev. To see which dependencies have newer
 # versions available, run `flutter pub outdated`.
+
+isar_version: &isar_version ^4.0.0-dev.14
+
 dependencies:
   flutter:
     sdk: flutter
@@ -36,11 +39,17 @@ dependencies:
   cupertino_icons: ^1.0.8
   flutter_launcher_icons: ^0.14.3
   flutter_native_splash: ^2.4.5
+  dio: ^5.8.0+1
+  isar: *isar_version
+  isar_flutter_libs: *isar_version
+  build_runner: any
+  path_provider: ^2.1.0
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^5.0.0
+  build_runner: any
 
 flutter_native_splash:
   color: "#7CA021"