vjrj
68b04ea409
- Anchor the message list to the bottom (`reverse: true`) so new messages stay in view instead of landing below the fold. - Move chat history from the OS keystore (O(n²) JSON blob, silent 200-msg cap) to a separate encrypted Drift/SQLCipher DB (`ChatDatabase`): indexed append, uncapped history, dedup as a unique-key invariant. It's an ephemeral per-device cache, isolated from the inventory schema, its migrations, and its sync. No data migration (pre-release). - Add day separators (Today/Yesterday/locale date) and a per-bubble time, all via ICU (12/24h per locale; Localizations locale maps Asturian → Spanish for intl date symbols). - Add peer avatars (deterministic colour from the pubkey + name initial), surface send failures that were previously silent, and make bubble text selectable (addresses, links). - New i18n keys in en/es/pt/ast; tests for grouping, formatting, avatars, scroll anchoring, storage and send errors. Docs: docs/design/chat-storage.md + open-decisions.md.
54 lines
2.1 KiB
Dart
54 lines
2.1 KiB
Dart
import 'package:drift/drift.dart';
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part 'chat_database.g.dart';
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/// A 1:1 chat message, held locally so a conversation survives leaving the
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/// screen and going offline.
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///
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/// This is deliberately NOT a [SyncColumns] inventory row: chat history is an
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/// ephemeral, per-device cache of what the relays delivered — not the user's
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/// CRDT-synced inventory. It never enters an inventory snapshot, backup, or the
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/// device-to-device sync, so it needs no HLC / tombstone / author metadata. It
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/// lives in its own encrypted database ([ChatDatabase]) to keep it fully
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/// isolated from the inventory schema, its migrations, and its sync stream.
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///
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/// [accountScope] namespaces rows per social identity (empty = the original
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/// identity), replacing the old per-key keystore prefix. The unique key makes
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/// de-duplication a DB invariant: a relay re-delivers the same gift wrap on
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/// every (re)subscribe, and an identical (scope, peer, sender, timestamp, text)
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/// row is simply not inserted twice.
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@TableIndex(
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name: 'messages_by_conversation',
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columns: {#accountScope, #peerPubkey, #sentAt},
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)
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class Messages extends Table {
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IntColumn get id => integer().autoIncrement()();
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TextColumn get accountScope => text()();
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TextColumn get peerPubkey => text()();
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TextColumn get fromPubkey => text()();
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TextColumn get body => text()();
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/// Milliseconds since epoch — the message's own timestamp (NIP-17), used for
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/// ordering and for the read/unread mark.
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IntColumn get sentAt => integer()();
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@override
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List<Set<Column>> get uniqueKeys => [
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{accountScope, peerPubkey, fromPubkey, sentAt, body},
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];
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}
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/// The encrypted local chat cache (SQLCipher via an injected executor, exactly
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/// like [AppDatabase]). Separate database on purpose — see [Messages]. There is
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/// no historical schema to migrate: version 1, created fresh.
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@DriftDatabase(tables: [Messages])
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class ChatDatabase extends _$ChatDatabase {
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ChatDatabase(super.e);
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@override
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int get schemaVersion => 1;
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@override
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MigrationStrategy get migration =>
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MigrationStrategy(onCreate: (m) async => m.createAll());
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}
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