merged develop

lib/api/marianumconnect/queries/timetable_custom_events/custom_events_migration.dart

@@ -1,6 +1,6 @@
 import 'dart:developer';
 
-import 'package:localstore/localstore.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 import '../../../../session/session.dart';
 import '../../../../session/session_manager.dart';
@@ -21,9 +21,7 @@ import 'timetable_custom_events_add.dart';
 /// failure only sees the events that were not yet moved, so nothing is
 /// duplicated. The flag is set only once MHSL reports no remaining events.
 class CustomEventsMigration {
-  static const String _collection = 'MarianumMobile';
-  static const String _document = 'customEventsMigration';
-  static const String _doneKey = 'migratedToMc';
+  static const String _doneKey = 'customEventsMigratedToMc';
 
   const CustomEventsMigration._();
 
@@ -34,18 +32,23 @@ class CustomEventsMigration {
     if (session is! CredentialSession || session.isDemo) return;
     if (await _isDone()) return;
 
+    final epoch = SessionManager().sessionEpoch;
     try {
       final response = await GetCustomTimetableEvent(
         GetCustomTimetableEventParams(session.legacyUserSecret),
       ).run();
 
       for (final event in response.events) {
+        // The POST authenticates with whoever is signed in now; after a
+        // sign-out the previous account's events would land in the next one.
+        if (!SessionManager().isCurrentSession(epoch)) return;
         await TimetableCustomEventsAdd().run(event);
         await RemoveCustomTimetableEvent(
           RemoveCustomTimetableEventParams(event.id),
         ).run();
       }
 
+      if (!SessionManager().isCurrentSession(epoch)) return;
       await _markDone();
       log(
         'Custom events migration: moved ${response.events.length} event(s) to Marianum-Connect.',
@@ -57,17 +60,11 @@ class CustomEventsMigration {
     }
   }
 
-  static Future<bool> _isDone() async {
-    final data = await Localstore.instance
-        .collection(_collection)
-        .doc(_document)
-        .get();
-    return data != null && data[_doneKey] == true;
-  }
+  // SharedPreferences, like the old cache document, is cleared on sign-out,
+  // so the next account runs its own migration.
+  static Future<bool> _isDone() async =>
+      (await SharedPreferences.getInstance()).getBool(_doneKey) ?? false;
 
-  static Future<void> _markDone() async {
-    await Localstore.instance.collection(_collection).doc(_document).set({
-      _doneKey: true,
-    });
-  }
+  static Future<void> _markDone() async =>
+      (await SharedPreferences.getInstance()).setBool(_doneKey, true);
 }