vjrj
6cff0d0b11
- 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.
59 lines
1.9 KiB
Dart
59 lines
1.9 KiB
Dart
import 'package:flutter/material.dart';
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/// A small round avatar for a chat peer. We have no profile photos yet, so it's
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/// a deterministic disc coloured from the peer's pubkey, showing the first
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/// letter of their [name] when known (else a person glyph). Same pubkey → same
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/// colour on every device, so the peer is visually recognizable.
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class PeerAvatar extends StatelessWidget {
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const PeerAvatar({
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required this.pubkey,
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this.name,
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this.radius = 14,
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super.key,
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});
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final String pubkey;
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final String? name;
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final double radius;
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@override
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Widget build(BuildContext context) {
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final letter = _initial(name);
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return CircleAvatar(
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radius: radius,
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backgroundColor: peerAvatarColor(pubkey),
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child: letter == null
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? Icon(Icons.person_outline, size: radius, color: Colors.white)
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: Text(
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letter,
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style: TextStyle(
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color: Colors.white,
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fontSize: radius,
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fontWeight: FontWeight.w600,
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),
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),
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);
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}
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static String? _initial(String? name) {
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if (name == null) return null;
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final trimmed = name.trim();
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if (trimmed.isEmpty) return null;
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// characters.first handles emoji/combining marks safely.
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return trimmed.characters.first.toUpperCase();
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}
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}
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/// A deterministic, readable avatar colour derived from [pubkey]. Hashes the
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/// key to a hue, then fixes saturation/lightness so white text stays legible on
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/// top. Pure and stable — exposed for testing.
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Color peerAvatarColor(String pubkey) {
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// FNV-1a over the code units — cheap, stable, well-spread across hues.
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var hash = 0x811c9dc5;
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for (final unit in pubkey.codeUnits) {
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hash = (hash ^ unit) * 0x01000193;
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hash &= 0xffffffff;
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}
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final hue = (hash % 360).toDouble();
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return HSLColor.fromAHSL(1, hue, 0.45, 0.42).toColor();
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}
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