vjrj
39adc423b9
A silent safety net against in-app data loss or DB corruption, with zero friction. Driven off the app lifecycle (startup + when hidden), it writes a sealed .tanemaki copy into the app's private storage once a week, keeping the newest 3 (rotating). Reuses the manual backup's encryption via the extracted ExportImportService.buildSealedBackup(); never throws, so a failed copy can't crash startup or backgrounding. Not registered on web (no file storage). Settings shows a quiet reassurance line with the date of the last automatic copy (localised via intl), hidden where no automatic backup exists.
24 lines
864 B
Dart
24 lines
864 B
Dart
import '../security/secret_store.dart';
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/// Remembers when the last automatic backup ran, so the app only makes a fresh
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/// copy once the interval has elapsed. Backed by the OS keystore (via
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/// [SecretStore]) to honour the "no plaintext at rest" rule — mirrors
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/// [OnboardingStore]; there is no shared_preferences here.
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class AutoBackupStore {
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AutoBackupStore(this._store);
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final SecretStore _store;
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static const _lastKey = 'tane.auto_backup.last';
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/// When the last automatic backup succeeded, or null if none has run yet.
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Future<DateTime?> lastBackupAt() async {
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final raw = await _store.read(_lastKey);
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if (raw == null) return null;
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return DateTime.tryParse(raw);
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}
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/// Records that an automatic backup succeeded at [when].
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Future<void> markBackupAt(DateTime when) =>
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_store.write(_lastKey, when.toIso8601String());
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}
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