74 lines
2.1 KiB
Dart
74 lines
2.1 KiB
Dart
import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:riverpod_annotation/riverpod_annotation.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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part 'sharedPrefs.g.dart';
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final sharedPreferencesProvider =
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Provider<SharedPreferences>((ref) => throw UnimplementedError());
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class SharedPrefNotifier<T> extends StateNotifier<T> {
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final SharedPreferences prefs;
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final String key;
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final T defaultValue;
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SharedPrefNotifier({
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required this.prefs,
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required this.key,
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required this.defaultValue,
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}) : super(prefs.containsKey(key)
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? _getValue<T>(prefs, key, defaultValue)
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: defaultValue);
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// Helper to get the value with proper typing
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static T _getValue<T>(SharedPreferences prefs, String key, T defaultValue) {
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switch (T) {
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case String:
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return prefs.getString(key) as T ?? defaultValue;
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case bool:
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return prefs.getBool(key) as T ?? defaultValue;
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case int:
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return prefs.getInt(key) as T ?? defaultValue;
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case double:
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return prefs.getDouble(key) as T ?? defaultValue;
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case const (List<String>):
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return prefs.getStringList(key) as T ?? defaultValue;
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default:
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throw UnsupportedError('Type $T not supported by SharedPreferences');
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}
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}
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Future<void> update(T value) async {
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switch (T) {
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case String:
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await prefs.setString(key, value as String);
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break;
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case bool:
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await prefs.setBool(key, value as bool);
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break;
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case int:
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await prefs.setInt(key, value as int);
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break;
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case double:
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await prefs.setDouble(key, value as double);
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break;
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case const (List<String>):
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await prefs.setStringList(key, value as List<String>);
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break;
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default:
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throw UnsupportedError('Type $T not supported by SharedPreferences');
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}
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state = value;
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}
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}
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final isDarkModeProvider =
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StateNotifierProvider<SharedPrefNotifier<bool>, bool>((ref) {
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final prefs = ref.watch(sharedPreferencesProvider);
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return SharedPrefNotifier<bool>(
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prefs: prefs,
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key: 'is_dark_mode',
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defaultValue: false,
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);
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});
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