feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>
2026-08-13 18:34:25 +08:00
parent 61c3fa1df9
commit 9dfa06ffee
3785 changed files with 1085458 additions and 2 deletions
@@ -0,0 +1,59 @@
+import 'dart:convert';
+
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:http/http.dart' as http;
+
+/// Supplies the HTTP client used for NIP-11 community icon lookups.
+///
+/// Tests can override this provider to return deterministic relay responses.
+final communityIconHttpClientProvider = Provider<http.Client>((ref) {
+  final client = http.Client();
+  ref.onDispose(client.close);
+  return client;
+});
+
+/// Reads a community's icon from its public NIP-11 relay information document.
+///
+/// The lookup does not depend on the active relay session, so icons can render
+/// for every paired community in the switcher. Callers explicitly invalidate
+/// this family when opening the switcher so transient failures and relay
+/// metadata updates can be retried without background polling.
+final communityIconProvider = FutureProvider.autoDispose
+    .family<String?, String>((ref, relayUrl) async {
+      final uri = _relayInfoUri(relayUrl);
+      if (uri == null) return null;
+
+      try {
+        final response = await ref
+            .read(communityIconHttpClientProvider)
+            .get(uri, headers: const {'Accept': 'application/nostr+json'})
+            .timeout(const Duration(seconds: 5));
+        if (response.statusCode < 200 || response.statusCode >= 300) {
+          return null;
+        }
+
+        final document = jsonDecode(response.body);
+        if (document is! Map<String, dynamic>) return null;
+
+        final icon = document['icon'];
+        if (icon is! String || icon.trim().isEmpty) return null;
+        return icon.trim();
+      } catch (_) {
+        return null;
+      }
+    });
+
+Uri? _relayInfoUri(String relayUrl) {
+  try {
+    final uri = Uri.parse(relayUrl.trim());
+    final scheme = switch (uri.scheme) {
+      'wss' => 'https',
+      'ws' => 'http',
+      'https' || 'http' => uri.scheme,
+      _ => null,
+    };
+    return scheme == null ? null : uri.replace(scheme: scheme);
+  } on FormatException {
+    return null;
+  }
+}