78 lines
2.5 KiB
Dart
78 lines
2.5 KiB
Dart
/*
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* Copyright (c) 2024-2026 Fabian Freund.
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*
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* This file is part of WebLibre
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* (see https://weblibre.eu).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import 'dart:typed_data';
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import 'package:search_client/search_client.dart';
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import 'package:weblibre/features/user/data/database/daos/search_tokens.dart';
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/// Drift-backed [TokenStash]. The optional [issuerKeyVersion] is only used
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/// by [add], and only the issuance controller is supposed to call that.
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/// Read-only consumers (the search session: reserve / commit / release /
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/// count / clear) can leave it null; calling [add] on a stash constructed
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/// without a key version is a programmer error and throws.
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class DriftTokenStash implements TokenStash {
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final SearchTokensDao dao;
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final String? issuerKeyVersion;
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DriftTokenStash(this.dao, {this.issuerKeyVersion});
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@override
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Future<void> add(List<Uint8List> tokens) {
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final version = issuerKeyVersion;
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if (version == null) {
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throw StateError(
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'DriftTokenStash.add called without an issuerKeyVersion — '
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'construct a stash with the version returned by '
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'IssuanceClient.fetchPublicKey() before issuing tokens.',
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);
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}
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return dao.addTokens(tokens, issuerKeyVersion: version);
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}
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@override
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Future<ReservedStashToken?> reserveOne() async {
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final reserved = await dao.reserveOne();
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if (reserved == null) return null;
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return ReservedStashToken(id: reserved.id, token: reserved.token);
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}
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@override
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Future<void> commitReserved(int id) => dao.commitReserved(id);
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@override
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Future<void> releaseReserved(int id) => dao.releaseReserved(id);
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@override
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Future<Uint8List?> takeOne() async {
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final reserved = await reserveOne();
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if (reserved == null) return null;
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await commitReserved(reserved.id);
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return reserved.token;
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}
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@override
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Future<int> count() => dao.count();
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@override
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Future<void> clear() async {
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await dao.clear();
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}
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}
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