Refactor preferences

lib/utils/pref_notifier.dart

@@ -1,102 +0,0 @@
-import 'package:hiddify/core/preferences/preferences_provider.dart';
-import 'package:hiddify/utils/custom_loggers.dart';
-import 'package:hooks_riverpod/hooks_riverpod.dart';
-import 'package:shared_preferences/shared_preferences.dart';
-
-class Pref<T, P> with InfraLogger {
-  const Pref(
-    this.prefs,
-    this.key,
-    this.defaultValue, {
-    this.mapFrom,
-    this.mapTo,
-  });
-
-  final SharedPreferences prefs;
-  final String key;
-  final T defaultValue;
-  final T Function(P value)? mapFrom;
-  final P Function(T value)? mapTo;
-
-  /// Updates the value asynchronously.
-  Future<void> update(T value) async {
-    loggy.debug("updating preference [$key]($T) to [$value]");
-    Object? mapped = value;
-    if (mapTo != null) {
-      mapped = mapTo!(value);
-    }
-    try {
-      switch (mapped) {
-        case String _:
-          await prefs.setString(key, mapped);
-        case bool _:
-          await prefs.setBool(key, mapped);
-        case int _:
-          await prefs.setInt(key, mapped);
-        case double _:
-          await prefs.setDouble(key, mapped);
-        case List<String> _:
-          await prefs.setStringList(key, mapped);
-      }
-    } catch (e) {
-      loggy.warning("error updating preference[$key]: $e");
-    }
-  }
-
-  T getValue() {
-    try {
-      loggy.debug("getting persisted preference [$key]($T)");
-      if (mapFrom != null) {
-        final persisted = prefs.get(key) as P?;
-        if (persisted == null) return defaultValue;
-        return mapFrom!(persisted);
-      } else if (T == List<String>) {
-        return prefs.getStringList(key) as T? ?? defaultValue;
-      }
-      return prefs.get(key) as T? ?? defaultValue;
-    } catch (e) {
-      loggy.warning("error getting preference[$key]: $e");
-      return defaultValue;
-    }
-  }
-}
-
-class PrefNotifier<T, P> extends AutoDisposeNotifier<T> with InfraLogger {
-  PrefNotifier(
-    this._key,
-    this._defaultValue,
-    this._mapFrom,
-    this._mapTo,
-  );
-
-  final String _key;
-  final T _defaultValue;
-  final T Function(P value)? _mapFrom;
-  final P Function(T)? _mapTo;
-
-  late final Pref<T, P> _pref = Pref(
-    ref.watch(sharedPreferencesProvider).requireValue,
-    _key,
-    _defaultValue,
-    mapFrom: _mapFrom,
-    mapTo: _mapTo,
-  );
-
-  static AutoDisposeNotifierProvider<PrefNotifier<T, P>, T> provider<T, P>(
-    String key,
-    T defaultValue, {
-    T Function(P value)? mapFrom,
-    P Function(T value)? mapTo,
-  }) =>
-      AutoDisposeNotifierProvider(
-        () => PrefNotifier(key, defaultValue, mapFrom, mapTo),
-      );
-
-  Future<void> update(T value) async {
-    _pref.update(value);
-    super.state = value;
-  }
-
-  @override
-  T build() => _pref.getValue();
-}