refactor: session logic

packages/uni_app/lib/controller/background_workers/notifications.dart

@@ -10,8 +10,7 @@ import 'package:tuple/tuple.dart';
 import 'package:uni/controller/background_workers/notifications/tuition_notification.dart';
 import 'package:uni/controller/local_storage/notification_timeout_storage.dart';
 import 'package:uni/controller/local_storage/preferences_controller.dart';
-import 'package:uni/controller/networking/network_router.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 import 'package:workmanager/workmanager.dart';
 
 ///
@@ -143,44 +142,14 @@ class NotificationManager {
 
   static Future<void> updateAndTriggerNotifications() async {
     PreferencesController.prefs = await SharedPreferences.getInstance();
-    final userInfo = await PreferencesController.getPersistentUserInfo();
-    final faculties = PreferencesController.getUserFaculties();
-    final refreshToken = await PreferencesController.getSessionRefreshToken();
+    final savedSession = await PreferencesController.getSavedSession();
 
-    if (faculties.isEmpty) {
+    if (savedSession == null) {
       return;
     }
-    if (userInfo == null && refreshToken == null) {
-      return; // Session not persistent
-    }
-
-    Session? session;
-    if (userInfo != null) {
-      session = await NetworkRouter.login(
-        userInfo.item1,
-        userInfo.item2,
-        faculties,
-        persistentSession: false,
-      );
-    }
-
-    if (refreshToken != null) {
-      final token = await NetworkRouter.getAccessToken(refreshToken);
-      final studentNumber = await PreferencesController.getUserNumber();
-      if (token == null || studentNumber == null) {
-        return;
-      }
-      session = await NetworkRouter.loginWithToken(
-        token,
-        studentNumber,
-        faculties,
-        persistentSession: false,
-      );
-    }
 
-    if (session == null) {
-      return;
-    }
+    final request = savedSession.createRefreshRequest();
+    final session = await request.perform();
 
     // Get the .json file that contains the last time that the
     // notification has ran

packages/uni_app/lib/controller/background_workers/notifications/tuition_notification.dart

@@ -4,7 +4,7 @@ import 'package:uni/controller/background_workers/notifications.dart';
 import 'package:uni/controller/fetchers/fees_fetcher.dart';
 import 'package:uni/controller/local_storage/preferences_controller.dart';
 import 'package:uni/controller/parsers/parser_fees.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 import 'package:uni/utils/duration_string_formatter.dart';
 
 class TuitionNotification extends Notification {

packages/uni_app/lib/controller/cleanup.dart

@@ -13,14 +13,12 @@ import 'package:uni/controller/local_storage/database/app_last_user_info_update_
 import 'package:uni/controller/local_storage/database/app_lectures_database.dart';
 import 'package:uni/controller/local_storage/database/app_user_database.dart';
 import 'package:uni/controller/local_storage/preferences_controller.dart';
-import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/model/providers/state_providers.dart';
 
 Future<void> cleanupStoredData(BuildContext context) async {
   StateProviders.fromContext(context).invalidate();
 
   final prefs = await SharedPreferences.getInstance();
-  final faculties = PreferencesController.getUserFaculties();
   await prefs.clear();
 
   await Future.wait([
@@ -31,9 +29,7 @@ Future<void> cleanupStoredData(BuildContext context) async {
     AppLastUserInfoUpdateDatabase().deleteLastUpdate(),
     AppBusStopDatabase().deleteBusStops(),
     AppCourseUnitsDatabase().deleteCourseUnits(),
-    NetworkRouter.killSigarraAuthentication(faculties),
-    PreferencesController.removePersistentUserInfo(),
-    PreferencesController.removeSessionRefreshToken(),
+    PreferencesController.removeSavedSession(),
   ]);
 
   final toCleanDirectory = await getApplicationDocumentsDirectory();

packages/uni_app/lib/controller/fetchers/calendar_fetcher_html.dart

@@ -2,7 +2,7 @@ import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_calendar.dart';
 import 'package:uni/model/entities/calendar_event.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Fetch the school calendar from HTML
 class CalendarFetcherHtml implements SessionDependantFetcher {

packages/uni_app/lib/controller/fetchers/course_units_fetcher/all_course_units_fetcher.dart

@@ -2,7 +2,7 @@ import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_course_units.dart';
 import 'package:uni/model/entities/course.dart';
 import 'package:uni/model/entities/course_units/course_unit.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class AllCourseUnitsFetcher {
   Future<List<CourseUnit>?> getAllCourseUnitsAndCourseAverages(

packages/uni_app/lib/controller/fetchers/course_units_fetcher/course_units_info_fetcher.dart

@@ -6,7 +6,7 @@ import 'package:uni/model/entities/course_units/course_unit_class.dart';
 import 'package:uni/model/entities/course_units/course_unit_directory.dart';
 import 'package:uni/model/entities/course_units/course_unit_sheet.dart';
 import 'package:uni/model/entities/course_units/sheet.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class CourseUnitsInfoFetcher implements SessionDependantFetcher {
   @override

packages/uni_app/lib/controller/fetchers/course_units_fetcher/current_course_units_fetcher.dart

@@ -3,7 +3,7 @@ import 'dart:convert';
 import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/model/entities/course_units/course_unit.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class CurrentCourseUnitsFetcher implements SessionDependantFetcher {
   @override

packages/uni_app/lib/controller/fetchers/courses_fetcher.dart

@@ -2,7 +2,7 @@ import 'package:http/http.dart';
 import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/model/entities/course_units/course_unit.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Returns the user's current list of [CourseUnit].
 class CoursesFetcher implements SessionDependantFetcher {

packages/uni_app/lib/controller/fetchers/exam_fetcher.dart

@@ -4,7 +4,7 @@ import 'package:uni/controller/parsers/parser_exams.dart';
 import 'package:uni/model/entities/course.dart';
 import 'package:uni/model/entities/course_units/course_unit.dart';
 import 'package:uni/model/entities/exam.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class ExamFetcher implements SessionDependantFetcher {
   ExamFetcher(this.courses, this.userUcs);

packages/uni_app/lib/controller/fetchers/faculties_fetcher.dart

@@ -1,6 +1,6 @@
 import 'package:html/parser.dart';
 import 'package:uni/controller/networking/network_router.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 Future<List<String>> getStudentFaculties(Session session) async {
   final response = await NetworkRouter.getWithCookies(

packages/uni_app/lib/controller/fetchers/fees_fetcher.dart

@@ -1,7 +1,7 @@
 import 'package:http/http.dart';
 import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class FeesFetcher implements SessionDependantFetcher {
   @override

packages/uni_app/lib/controller/fetchers/library_occupation_fetcher.dart

@@ -2,7 +2,7 @@ import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_library_occupation.dart';
 import 'package:uni/model/entities/library_occupation.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Fetch the library occupation from Google Sheets
 class LibraryOccupationFetcherSheets implements SessionDependantFetcher {

packages/uni_app/lib/controller/fetchers/print_fetcher.dart

@@ -1,7 +1,7 @@
 import 'package:http/http.dart' as http;
 import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class PrintFetcher implements SessionDependantFetcher {
   @override
@@ -36,7 +36,7 @@ class PrintFetcher implements SessionDependantFetcher {
     };
 
     final headers = <String, String>{};
-    headers['cookie'] = session.cookies;
+    headers['cookie'] = session.cookies.join('; ');
     headers['content-type'] = 'application/x-www-form-urlencoded';
 
     final response = await http.post(url.toUri(), headers: headers, body: data);

packages/uni_app/lib/controller/fetchers/profile_fetcher.dart

@@ -3,7 +3,7 @@ import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_courses.dart';
 import 'package:uni/model/entities/profile.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class ProfileFetcher implements SessionDependantFetcher {
   @override

packages/uni_app/lib/controller/fetchers/reference_fetcher.dart

@@ -1,7 +1,7 @@
 import 'package:http/http.dart';
 import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/controller/networking/network_router.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 class ReferenceFetcher implements SessionDependantFetcher {
   @override

packages/uni_app/lib/controller/fetchers/restaurant_fetcher.dart

@@ -1,7 +1,7 @@
 import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_restaurants.dart';
 import 'package:uni/model/entities/restaurant.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Class for fetching the menu
 class RestaurantFetcher {

packages/uni_app/lib/controller/fetchers/schedule_fetcher/schedule_fetcher.dart

@@ -1,8 +1,8 @@
 import 'package:uni/controller/fetchers/session_dependant_fetcher.dart';
 import 'package:uni/model/entities/lecture.dart';
 import 'package:uni/model/entities/profile.dart';
-import 'package:uni/model/entities/session.dart';
 import 'package:uni/model/utils/time/week.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Class for fetching the user's schedule.
 abstract class ScheduleFetcher extends SessionDependantFetcher {

packages/uni_app/lib/controller/fetchers/schedule_fetcher/schedule_fetcher_api.dart

@@ -4,8 +4,8 @@ import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_schedule.dart';
 import 'package:uni/model/entities/lecture.dart';
 import 'package:uni/model/entities/profile.dart';
-import 'package:uni/model/entities/session.dart';
 import 'package:uni/model/utils/time/week.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Class for fetching the user's lectures from the faculties' API.
 class ScheduleFetcherApi extends ScheduleFetcher {

packages/uni_app/lib/controller/fetchers/schedule_fetcher/schedule_fetcher_html.dart

@@ -5,8 +5,8 @@ import 'package:uni/controller/networking/network_router.dart';
 import 'package:uni/controller/parsers/parser_schedule_html.dart';
 import 'package:uni/model/entities/lecture.dart';
 import 'package:uni/model/entities/profile.dart';
-import 'package:uni/model/entities/session.dart';
 import 'package:uni/model/utils/time/week.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// Class for fetching the user's lectures from the schedule's HTML page.
 class ScheduleFetcherHtml extends ScheduleFetcher {

packages/uni_app/lib/controller/fetchers/session_dependant_fetcher.dart

@@ -1,4 +1,4 @@
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 abstract class SessionDependantFetcher {
   List<String> getEndpoints(Session session);

packages/uni_app/lib/controller/local_storage/database/app_database.dart

@@ -41,8 +41,7 @@ abstract class AppDatabase<T> {
 
   /// Getter to determine if the session is persistent.
   Future<bool> get persistentSession async {
-    _persistentSession ??=
-        await PreferencesController.getPersistentUserInfo() != null;
+    _persistentSession ??= await PreferencesController.isSessionPersistent();
     return _persistentSession!;
   }
 

packages/uni_app/lib/controller/local_storage/file_offline_storage.dart

@@ -6,7 +6,7 @@ import 'package:http/http.dart' as http;
 import 'package:logger/logger.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:uni/controller/networking/network_router.dart';
-import 'package:uni/model/entities/session.dart';
+import 'package:uni/session/flows/base/session.dart';
 
 /// The offline image storage location on the device.
 Future<String> get _localPath async {