feat(neon_framework): Add keys() methods for Persistence and Settings…

…Store

Signed-off-by: provokateurin <[email protected]>

packages/neon_framework/lib/src/storage/persistence.dart

@@ -7,6 +7,9 @@ abstract interface class Persistence<T extends Object> {
   /// Whether a value exists at the given [key].
   FutureOr<bool> containsKey(String key);
 
+  /// Returns all keys in the persistent storage.
+  FutureOr<List<String>> keys();
+
   /// Clears all values from persistent storage.
   FutureOr<bool> clear();
 
@@ -53,6 +56,9 @@ abstract class CachedPersistence<T extends Object> implements Persistence<T> {
   /// when the app is restarted.
   void setCache(String key, T value) => cache[key] = value;
 
+  @override
+  List<String> keys() => cache.keys.toList();
+
   @override
   bool containsKey(String key) => cache.containsKey(key);
 

packages/neon_framework/lib/src/storage/settings_store.dart

@@ -32,6 +32,9 @@ abstract interface class SettingsStore {
 
   /// Removes an entry from persistent storage.
   Future<bool> remove(String key);
+
+  /// Returns all keys in the persistent storage.
+  List<String> keys();
 }
 
 /// Default implementation of the [SettingsStore] backed by the given [persistence].
@@ -62,4 +65,7 @@ final class DefaultSettingsStore implements SettingsStore {
 
   @override
   Future<bool> setBool(String key, bool value) => persistence.setValue(key, value);
+
+  @override
+  List<String> keys() => persistence.keys();
 }