vjrj
70905a0578
Third slice: bridge Block 1's root seed to the Block 2 transport foundation. - SocialService: derives the secp256k1 Nostr identity from the SAME root seed the recovery QR backs up (no extra backup), exposes npub/pubkey, and opens a SocialSession = one shared connection carrying all three transports. - injector.dart: registers SocialService in get_it. Local-first — derivation is cheap + offline; no relay is contacted at startup. Replaces the old "nodeId slice of the seed is the social pubkey" placeholder; keeps the CRDT author id distinct (unifying it would rewrite authorship — a later decision). - Test: deterministic identity from the seed hex, matches commons_core, rejects malformed hex. 5 tests green; app_seeds analyzes clean (0 errors).
74 lines
2.6 KiB
Dart
74 lines
2.6 KiB
Dart
import 'dart:typed_data';
|
|
|
|
import 'package:commons_core/commons_core.dart';
|
|
|
|
/// The app-side entry point to the (Block 2) social layer.
|
|
///
|
|
/// Holds the user's Nostr identity — deterministically derived from the same
|
|
/// root seed the recovery QR backs up (so it needs no extra backup) — and opens
|
|
/// social sessions on demand. Local-first: constructing this is cheap and
|
|
/// offline; nothing connects to a relay until [openSession] is called, so the
|
|
/// app runs fully without network and the social layer only enriches.
|
|
class SocialService {
|
|
SocialService({required this.identity, List<String> relays = const []})
|
|
: relays = List.unmodifiable(relays);
|
|
|
|
/// The derived Nostr identity (secp256k1). Same key across reinstalls that
|
|
/// restore the same seed.
|
|
final NostrIdentity identity;
|
|
|
|
/// Community relay URLs (may be empty — discovery/publishing degrade to
|
|
/// nothing when offline or unconfigured).
|
|
final List<String> relays;
|
|
|
|
/// Shareable public identity (`npub…`) and its hex form.
|
|
String get npub => identity.npub;
|
|
String get publicKeyHex => identity.publicKeyHex;
|
|
|
|
/// Derives the identity from the stored root-seed hex (32-byte, 64 chars).
|
|
static Future<SocialService> fromRootSeedHex(
|
|
String rootSeedHex, {
|
|
List<String> relays = const [],
|
|
}) async {
|
|
final identity = await NostrKeyDerivation.deriveFromSeed(
|
|
_hexToBytes(rootSeedHex),
|
|
);
|
|
return SocialService(identity: identity, relays: relays);
|
|
}
|
|
|
|
/// Opens a session against [relayUrl]: one shared connection carrying all
|
|
/// three transports (offers, messaging, trust). Caller closes it.
|
|
Future<SocialSession> openSession(String relayUrl) async {
|
|
final connection =
|
|
await NostrConnection.connect(relayUrl, identity: identity);
|
|
return SocialSession(connection);
|
|
}
|
|
}
|
|
|
|
/// One live relay connection with the three transports on top — the
|
|
/// "one connection, three interfaces" shape, at the app layer.
|
|
class SocialSession {
|
|
SocialSession(this._connection)
|
|
: offers = NostrOfferTransport(_connection),
|
|
messages = NostrMessageTransport(_connection),
|
|
trust = NostrTrustTransport(_connection);
|
|
|
|
final NostrConnection _connection;
|
|
|
|
final OfferTransport offers;
|
|
final MessageTransport messages;
|
|
final TrustTransport trust;
|
|
|
|
Future<void> close() => _connection.close();
|
|
}
|
|
|
|
Uint8List _hexToBytes(String hex) {
|
|
if (hex.length.isOdd) {
|
|
throw ArgumentError('hex string must have an even length');
|
|
}
|
|
final out = Uint8List(hex.length ~/ 2);
|
|
for (var i = 0; i < out.length; i++) {
|
|
out[i] = int.parse(hex.substring(i * 2, i * 2 + 2), radix: 16);
|
|
}
|
|
return out;
|
|
}
|