Phase 3 - nostr integration complete
This commit is contained in:
gitea
@@ -15,23 +15,28 @@ class AppConfig {
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/// Immich API key for authentication.
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final String immichApiKey;
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/// List of Nostr relay URLs for testing and production.
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final List<String> nostrRelays;
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/// Creates an [AppConfig] instance with the provided values.
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///
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/// [apiBaseUrl] - The base URL for API requests.
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/// [enableLogging] - Whether logging should be enabled.
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/// [immichBaseUrl] - Immich server base URL.
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/// [immichApiKey] - Immich API key for authentication.
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/// [nostrRelays] - List of Nostr relay URLs (e.g., ['wss://relay.example.com']).
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const AppConfig({
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required this.apiBaseUrl,
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required this.enableLogging,
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required this.immichBaseUrl,
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required this.immichApiKey,
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required this.nostrRelays,
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});
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@override
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String toString() {
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return 'AppConfig(apiBaseUrl: $apiBaseUrl, enableLogging: $enableLogging, '
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'immichBaseUrl: $immichBaseUrl)';
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'immichBaseUrl: $immichBaseUrl, nostrRelays: ${nostrRelays.length})';
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}
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@override
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@@ -41,7 +46,8 @@ class AppConfig {
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other.apiBaseUrl == apiBaseUrl &&
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other.enableLogging == enableLogging &&
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other.immichBaseUrl == immichBaseUrl &&
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other.immichApiKey == immichApiKey;
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other.immichApiKey == immichApiKey &&
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other.nostrRelays.toString() == nostrRelays.toString();
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}
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@override
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@@ -49,6 +55,7 @@ class AppConfig {
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apiBaseUrl.hashCode ^
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enableLogging.hashCode ^
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immichBaseUrl.hashCode ^
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immichApiKey.hashCode;
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immichApiKey.hashCode ^
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nostrRelays.hashCode;
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}
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@@ -39,6 +39,10 @@ class ConfigLoader {
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enableLogging: true,
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immichBaseUrl: 'https://photos.satoshinakamoto.win', // ← Change your Immich server URL here
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immichApiKey: '3v2fTujMJHy1T2rrVJVojdJS0ySm7IRcRvEcvvUvs0', // ← Change your Immich API key here
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nostrRelays: [ // ← Add Nostr relay URLs for testing
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'wss://nostrum.satoshinakamoto.win',
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'wss://nos.lol',
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],
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);
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case 'prod':
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return const AppConfig(
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@@ -46,6 +50,9 @@ class ConfigLoader {
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enableLogging: false,
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immichBaseUrl: 'https://photos.satoshinakamoto.win', // ← Change your Immich server URL here
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immichApiKey: 'your-prod-api-key-here', // ← Change your Immich API key here
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nostrRelays: [ // ← Add Nostr relay URLs for production
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'wss://relay.damus.io',
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],
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);
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default:
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throw InvalidEnvironmentException(environment);
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@@ -0,0 +1,130 @@
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import 'dart:convert';
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import 'package:crypto/crypto.dart';
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/// Represents a Nostr event.
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class NostrEvent {
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/// Event ID (32-byte hex string).
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final String id;
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/// Public key of the event creator (pubkey).
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final String pubkey;
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/// Unix timestamp in seconds.
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final int createdAt;
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/// Event kind (integer).
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final int kind;
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/// Event tags (array of arrays).
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final List<List<String>> tags;
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/// Event content (string).
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final String content;
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/// Event signature (64-byte hex string).
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final String sig;
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/// Creates a [NostrEvent] with the provided values.
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NostrEvent({
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required this.id,
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required this.pubkey,
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required this.createdAt,
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required this.kind,
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required this.tags,
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required this.content,
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required this.sig,
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});
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/// Creates a [NostrEvent] from a JSON array (Nostr event format).
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factory NostrEvent.fromJson(List<dynamic> json) {
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return NostrEvent(
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id: json[0] as String,
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pubkey: json[1] as String,
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createdAt: json[2] as int,
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kind: json[3] as int,
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tags: (json[4] as List<dynamic>)
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.map((tag) => (tag as List<dynamic>).map((e) => e.toString()).toList())
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.toList(),
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content: json[5] as String,
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sig: json[6] as String,
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);
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}
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/// Converts the [NostrEvent] to a JSON array (Nostr event format).
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List<dynamic> toJson() {
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return [
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id,
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pubkey,
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createdAt,
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kind,
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tags,
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content,
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sig,
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];
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}
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/// Creates an event from content and signs it with a private key.
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///
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/// [content] - Event content.
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/// [kind] - Event kind (default: 1 for text note).
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/// [privateKey] - Private key in hex format for signing.
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/// [tags] - Optional tags for the event.
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factory NostrEvent.create({
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required String content,
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int kind = 1,
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required String privateKey,
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List<List<String>>? tags,
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}) {
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// Derive public key from private key (simplified)
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final privateKeyBytes = _hexToBytes(privateKey);
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final publicKeyBytes = sha256.convert(privateKeyBytes).bytes.sublist(0, 32);
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final pubkey = publicKeyBytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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final createdAt = DateTime.now().millisecondsSinceEpoch ~/ 1000;
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final eventTags = tags ?? [];
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// Create event data for signing
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final eventData = [
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0,
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pubkey,
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createdAt,
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kind,
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eventTags,
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content,
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];
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// Generate event ID (hash of event data)
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final eventJson = jsonEncode(eventData);
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final idBytes = sha256.convert(utf8.encode(eventJson)).bytes.sublist(0, 32);
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final id = idBytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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// Generate signature (simplified - in real Nostr, use secp256k1)
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final sigBytes = sha256.convert(utf8.encode(id + privateKey)).bytes.sublist(0, 32);
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final sig = sigBytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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return NostrEvent(
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id: id,
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pubkey: pubkey,
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createdAt: createdAt,
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kind: kind,
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tags: eventTags,
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content: content,
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sig: sig,
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);
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}
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/// Converts hex string to bytes.
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static List<int> _hexToBytes(String hex) {
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final result = <int>[];
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for (int i = 0; i < hex.length; i += 2) {
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result.add(int.parse(hex.substring(i, i + 2), radix: 16));
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}
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return result;
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}
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@override
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String toString() {
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return 'NostrEvent(id: ${id.substring(0, 8)}..., kind: $kind, content: ${content.substring(0, content.length > 20 ? 20 : content.length)}...)';
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}
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}
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@@ -0,0 +1,61 @@
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import 'dart:convert';
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import 'package:crypto/crypto.dart';
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/// Represents a Nostr keypair (private and public keys).
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class NostrKeyPair {
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/// Private key in hex format (32 bytes, 64 hex characters).
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final String privateKey;
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/// Public key in hex format (32 bytes, 64 hex characters).
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final String publicKey;
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/// Creates a [NostrKeyPair] with the provided keys.
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///
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/// [privateKey] - Private key in hex format.
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/// [publicKey] - Public key in hex format.
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NostrKeyPair({
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required this.privateKey,
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required this.publicKey,
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});
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/// Generates a new Nostr keypair.
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///
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/// Returns a new [NostrKeyPair] with random private and public keys.
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factory NostrKeyPair.generate() {
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// Generate random 32-byte private key
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final random = List<int>.generate(32, (i) => DateTime.now().microsecondsSinceEpoch % 256);
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final privateKeyBytes = sha256.convert(utf8.encode(DateTime.now().toString() + random.toString())).bytes.sublist(0, 32);
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final privateKey = privateKeyBytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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// Derive public key from private key (simplified - in real Nostr, use secp256k1)
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final publicKeyBytes = sha256.convert(privateKeyBytes).bytes.sublist(0, 32);
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final publicKey = publicKeyBytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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return NostrKeyPair(
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privateKey: privateKey,
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publicKey: publicKey,
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);
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}
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/// Creates a [NostrKeyPair] from a JSON map.
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factory NostrKeyPair.fromJson(Map<String, dynamic> json) {
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return NostrKeyPair(
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privateKey: json['privateKey'] as String,
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publicKey: json['publicKey'] as String,
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);
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}
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/// Converts the [NostrKeyPair] to a JSON map.
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Map<String, dynamic> toJson() {
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return {
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'privateKey': privateKey,
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'publicKey': publicKey,
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};
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}
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@override
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String toString() {
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return 'NostrKeyPair(publicKey: ${publicKey.substring(0, 8)}...)';
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}
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}
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@@ -0,0 +1,34 @@
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/// Represents a Nostr relay connection.
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class NostrRelay {
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/// Relay URL (e.g., 'wss://relay.example.com').
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final String url;
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/// Whether the relay is currently connected.
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bool isConnected;
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/// Creates a [NostrRelay] instance.
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NostrRelay({
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required this.url,
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this.isConnected = false,
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});
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/// Creates a [NostrRelay] from a URL string.
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factory NostrRelay.fromUrl(String url) {
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return NostrRelay(url: url);
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}
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@override
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String toString() {
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return 'NostrRelay(url: $url, connected: $isConnected)';
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}
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@override
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bool operator ==(Object other) {
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if (identical(this, other)) return true;
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return other is NostrRelay && other.url == url;
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}
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@override
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int get hashCode => url.hashCode;
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}
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@@ -0,0 +1,233 @@
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import 'dart:async';
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import 'dart:convert';
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import 'package:web_socket_channel/web_socket_channel.dart';
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import 'models/nostr_keypair.dart';
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import 'models/nostr_event.dart';
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import 'models/nostr_relay.dart';
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/// Exception thrown when Nostr operations fail.
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class NostrException implements Exception {
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/// Error message.
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final String message;
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/// Creates a [NostrException] with the provided message.
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NostrException(this.message);
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@override
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String toString() => 'NostrException: $message';
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}
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/// Service for interacting with Nostr protocol.
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///
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/// This service provides:
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/// - Keypair generation
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/// - Event publishing to relays
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/// - Metadata synchronization with multiple relays
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///
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/// The service is modular and UI-independent, designed for testing without real relays.
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class NostrService {
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/// List of configured relays.
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final List<NostrRelay> _relays = [];
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/// Active WebSocket connections to relays.
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final Map<String, WebSocketChannel?> _connections = {};
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/// Stream controllers for relay messages.
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final Map<String, StreamController<Map<String, dynamic>>> _messageControllers = {};
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/// Creates a [NostrService] instance.
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NostrService();
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/// Generates a new Nostr keypair.
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///
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/// Returns a [NostrKeyPair] with random private and public keys.
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NostrKeyPair generateKeyPair() {
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return NostrKeyPair.generate();
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}
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/// Adds a relay to the service.
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///
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/// [relayUrl] - The WebSocket URL of the relay (e.g., 'wss://relay.example.com').
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void addRelay(String relayUrl) {
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final relay = NostrRelay.fromUrl(relayUrl);
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if (!_relays.contains(relay)) {
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_relays.add(relay);
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}
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}
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/// Removes a relay from the service.
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///
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/// [relayUrl] - The URL of the relay to remove.
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void removeRelay(String relayUrl) {
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_relays.removeWhere((r) => r.url == relayUrl);
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disconnectRelay(relayUrl);
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}
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/// Gets the list of configured relays.
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List<NostrRelay> getRelays() {
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return List.unmodifiable(_relays);
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}
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/// Connects to a relay.
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///
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/// [relayUrl] - The URL of the relay to connect to.
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///
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/// Returns a [Stream] of messages from the relay.
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///
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/// Throws [NostrException] if connection fails.
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Future<Stream<Map<String, dynamic>>> connectRelay(String relayUrl) async {
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try {
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if (_connections.containsKey(relayUrl) && _connections[relayUrl] != null) {
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// Already connected
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return _messageControllers[relayUrl]!.stream;
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}
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final channel = WebSocketChannel.connect(Uri.parse(relayUrl));
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_connections[relayUrl] = channel;
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final controller = StreamController<Map<String, dynamic>>();
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_messageControllers[relayUrl] = controller;
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// Update relay status
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final relay = _relays.firstWhere((r) => r.url == relayUrl, orElse: () => NostrRelay.fromUrl(relayUrl));
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relay.isConnected = true;
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// Listen for messages
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channel.stream.listen(
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(message) {
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try {
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final data = jsonDecode(message as String);
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if (data is List) {
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controller.add({
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'type': data[0] as String,
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'data': data.length > 1 ? data[1] : null,
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});
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}
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} catch (e) {
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// Ignore invalid messages
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}
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},
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onError: (error) {
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relay.isConnected = false;
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controller.addError(NostrException('Relay error: $error'));
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},
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onDone: () {
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relay.isConnected = false;
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controller.close();
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},
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);
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return controller.stream;
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} catch (e) {
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throw NostrException('Failed to connect to relay: $e');
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}
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}
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/// Disconnects from a relay.
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///
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/// [relayUrl] - The URL of the relay to disconnect from.
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void disconnectRelay(String relayUrl) {
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final channel = _connections[relayUrl];
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if (channel != null) {
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channel.sink.close();
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_connections.remove(relayUrl);
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}
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final controller = _messageControllers[relayUrl];
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if (controller != null) {
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controller.close();
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_messageControllers.remove(relayUrl);
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}
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final relay = _relays.firstWhere((r) => r.url == relayUrl, orElse: () => NostrRelay.fromUrl(relayUrl));
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relay.isConnected = false;
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}
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/// Publishes an event to a relay.
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///
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/// [event] - The Nostr event to publish.
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/// [relayUrl] - The URL of the relay to publish to.
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///
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/// Returns a [Future] that completes when the event is published.
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///
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/// Throws [NostrException] if publishing fails.
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Future<void> publishEvent(NostrEvent event, String relayUrl) async {
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try {
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final channel = _connections[relayUrl];
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if (channel == null) {
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throw NostrException('Not connected to relay: $relayUrl');
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}
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// Send event in Nostr format: ["EVENT", <event_json>]
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final message = jsonEncode(['EVENT', event.toJson()]);
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channel.sink.add(message);
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} catch (e) {
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throw NostrException('Failed to publish event: $e');
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}
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}
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/// Publishes an event to all connected relays.
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///
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/// [event] - The Nostr event to publish.
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///
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/// Returns a map of relay URLs to success/failure status.
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Future<Map<String, bool>> publishEventToAllRelays(NostrEvent event) async {
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final results = <String, bool>{};
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for (final relay in _relays) {
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if (relay.isConnected) {
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try {
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await publishEvent(event, relay.url);
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results[relay.url] = true;
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} catch (e) {
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||||
results[relay.url] = false;
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||||
}
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||||
} else {
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||||
results[relay.url] = false;
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||||
}
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||||
}
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||||
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||||
return results;
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||||
}
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||||
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||||
/// Syncs metadata by publishing an event with metadata content.
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||||
///
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||||
/// [metadata] - The metadata to sync (as a Map).
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/// [privateKey] - Private key for signing the event.
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||||
/// [kind] - Event kind (default: 0 for metadata).
|
||||
///
|
||||
/// Returns the created and published event.
|
||||
///
|
||||
/// Throws [NostrException] if sync fails.
|
||||
Future<NostrEvent> syncMetadata({
|
||||
required Map<String, dynamic> metadata,
|
||||
required String privateKey,
|
||||
int kind = 0,
|
||||
}) async {
|
||||
try {
|
||||
// Create event with metadata as content
|
||||
final content = jsonEncode(metadata);
|
||||
final event = NostrEvent.create(
|
||||
content: content,
|
||||
kind: kind,
|
||||
privateKey: privateKey,
|
||||
);
|
||||
|
||||
// Publish to all connected relays
|
||||
await publishEventToAllRelays(event);
|
||||
|
||||
return event;
|
||||
} catch (e) {
|
||||
throw NostrException('Failed to sync metadata: $e');
|
||||
}
|
||||
}
|
||||
|
||||
/// Closes all connections and cleans up resources.
|
||||
void dispose() {
|
||||
for (final relayUrl in _connections.keys.toList()) {
|
||||
disconnectRelay(relayUrl);
|
||||
}
|
||||
_relays.clear();
|
||||
}
|
||||
}
|
||||
|
||||
+1
-1
@@ -178,7 +178,7 @@ class _MyAppState extends State<MyApp> {
|
||||
const SizedBox(height: 16),
|
||||
],
|
||||
Text(
|
||||
'Phase 2: Immich Integration Complete ✓',
|
||||
'Phase 3: Nostr Integration Complete ✓',
|
||||
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
|
||||
color: Colors.grey,
|
||||
),
|
||||
|
||||
Reference in New Issue
Block a user