api and storage restructure

lib/api/webuntis/queries/getTimetable/getTimetableCache.dart

@@ -1,49 +1,43 @@
-import 'dart:convert';
-
 import '../../../requestCache.dart';
 import '../authenticate/authenticate.dart';
 import 'getTimetable.dart';
 import 'getTimetableParams.dart';
 import 'getTimetableResponse.dart';
 
-class GetTimetableCache extends RequestCache<GetTimetableResponse> {
-  int startdate;
-  int enddate;
-
+class GetTimetableCache extends SimpleCache<GetTimetableResponse> {
   GetTimetableCache({
     required void Function(GetTimetableResponse) onUpdate,
-    void Function(Exception)? onError,
-    required this.startdate,
-    required this.enddate,
-    bool? renew,
+    super.onError,
+    required int startdate,
+    required int enddate,
+    super.renew,
   }) : super(
-          RequestCache.cacheMinute,
-          onUpdate,
-          onError: onError ?? RequestCache.ignore,
-          renew: renew,
+          cacheTime: RequestCache.cacheMinute,
+          loader: () => _load(startdate, enddate),
+          fromJson: GetTimetableResponse.fromJson,
+          onUpdate: onUpdate,
         ) {
     start('wu-timetable-$startdate-$enddate');
   }
 
-  @override
-  GetTimetableResponse onLocalData(String json) => GetTimetableResponse.fromJson(jsonDecode(json));
-
-  @override
-  Future<GetTimetableResponse> onLoad() async => GetTimetable(
-        GetTimetableParams(
-            options: GetTimetableParamsOptions(
-                element: GetTimetableParamsOptionsElement(
-                    id: (await Authenticate.getSession()).personId,
-                type: (await Authenticate.getSession()).personType,
-                keyType: GetTimetableParamsOptionsElementKeyType.id,
-            ),
-            startDate: startdate,
-            endDate: enddate,
-            teacherFields: GetTimetableParamsOptionsFields.all,
-            subjectFields: GetTimetableParamsOptionsFields.all,
-            roomFields: GetTimetableParamsOptionsFields.all,
-            klasseFields: GetTimetableParamsOptionsFields.all,
-        )
-    )
+  static Future<GetTimetableResponse> _load(int startdate, int enddate) async {
+    final session = await Authenticate.getSession();
+    return GetTimetable(
+      GetTimetableParams(
+        options: GetTimetableParamsOptions(
+          element: GetTimetableParamsOptionsElement(
+            id: session.personId,
+            type: session.personType,
+            keyType: GetTimetableParamsOptionsElementKeyType.id,
+          ),
+          startDate: startdate,
+          endDate: enddate,
+          teacherFields: GetTimetableParamsOptionsFields.all,
+          subjectFields: GetTimetableParamsOptionsFields.all,
+          roomFields: GetTimetableParamsOptionsFields.all,
+          klasseFields: GetTimetableParamsOptionsFields.all,
+        ),
+      ),
     ).run();
+  }
 }