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import 'local_key_value_store.dart';
/// Remembers an agent choice, independently of a machine, profile or permission.
class AgentPreference {
AgentPreference(this.storage);
final LocalKeyValueStore? storage;
static const _key = 'new_agent_engine';
String? value;
Future<void>? _loading;
Future<void> _writes = Future.value();
int _revision = 0;
Future<void> load() => _loading ??= _read();
Future<void> _read() async {
final revision = _revision;
try {
final stored = await storage?.read(_key);
if (revision == _revision && revision == 0) value = stored;
} catch (_) {
/* A missing preference never blocks a new agent. */
}
}
Future<void> select(String engine) {
_revision++;
value = engine;
return _writes = _writes.then((_) async {
try {
await storage?.write(_key, engine);
} catch (_) {
/* Keep the current choice usable if persistence fails. */
}
});
}
}
710fbeaaeThis file is pinned to the selected release. Download the original to open it in your design tool.