tane/apps/app_seeds/lib/services/profile_cache.dart
vjrj ec56819fbf feat(profile): profile photo or seed-illustration avatar
Profiles had only a coloured-initial disc. Now each person can set an
avatar — a real photo OR one of our own seed illustrations (so
pseudonymity stays the default; no photo required).

- ui/avatar.dart: the one-string value scheme carried in the kind:0
  'picture' — a 'data:' photo thumbnail, a 'tane:seed:<glyph>' token, or
  empty. The Nostr ProfileTransport already published 'picture'.
- Photos ride inline as a tiny thumbnail (reuses offerThumbnailDataUri,
  24 KB cap) — no media server, like offer photos.
- avatar_edit.dart: pick/take a photo, choose a seed illustration, or
  remove; ProfileStore stores it; ProfileScreen shows a big editable
  avatar and publishes it.
- PeerAvatar renders photo / illustration / initial fallback.
- ProfileCache gains picture/setPicture; the inbox caches peers' avatars
  alongside their names.
- i18n avatar block (en/es/pt/ast). Tests: value scheme + PeerAvatar
  render modes, store + cache round-trips.

Follow-up: render peers' avatars in chat/market/your-people (thread the
cached picture into PeerAvatar at each call site).
2026-07-11 22:21:52 +02:00

44 lines
1.8 KiB
Dart

import '../security/secret_store.dart';
/// Remembers the display names peers have published (their NIP-01 kind:0
/// `name`), so the inbox and chat show a human name instead of a raw key —
/// even offline. Keystore-backed (no plaintext at rest).
class ProfileCache {
/// [accountScope] namespaces the keys per social identity (empty = the
/// original identity's legacy keys). See [socialAccountScope].
ProfileCache(this._store, {String accountScope = ''})
: _prefix = accountScope.isEmpty
? 'tane.social.name.'
: 'tane.social.$accountScope.name.';
final SecretStore _store;
final String _prefix;
// Avatars peers have published (kind:0 `picture`) live under a parallel key
// namespace, so a name and an avatar are cached independently.
String get _picPrefix => '${_prefix.substring(0, _prefix.length - 5)}picture.';
/// The cached name for [pubkeyHex], or null if none is known.
Future<String?> name(String pubkeyHex) async {
final value = await _store.read('$_prefix$pubkeyHex');
return (value == null || value.isEmpty) ? null : value;
}
Future<void> setName(String pubkeyHex, String name) =>
_store.write('$_prefix$pubkeyHex', name.trim());
/// The cached avatar for [pubkeyHex] (a `data:` photo or `tane:seed:<glyph>`
/// token), or null if none is known.
Future<String?> picture(String pubkeyHex) async {
final value = await _store.read('$_picPrefix$pubkeyHex');
return (value == null || value.isEmpty) ? null : value;
}
Future<void> setPicture(String pubkeyHex, String picture) =>
_store.write('$_picPrefix$pubkeyHex', picture.trim());
}
/// A compact, human-ish rendering of a public key when no name is known yet.
String shortPubkey(String pubkeyHex) => pubkeyHex.length <= 12
? pubkeyHex
: '${pubkeyHex.substring(0, 6)}${pubkeyHex.substring(pubkeyHex.length - 4)}';