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Add pref utilities

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This commit is contained in:
problematicconsumer
2023-09-01 14:55:15 +03:30
parent 6a2e359bbe
commit 1231fb363d
2 changed files with 36 additions and 14 deletions
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41
lib/utils/pref_notifier.dart
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@@ -3,39 +3,52 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:shared_preferences/shared_preferences.dart'; import 'package:shared_preferences/shared_preferences.dart';
class PrefNotifier<T> extends AutoDisposeNotifier<T> { class PrefNotifier<T> extends AutoDisposeNotifier<T> {
PrefNotifier(this._key, this._defaultValue); PrefNotifier(this._key, this._defaultValue, this._mapFrom, this._mapTo);
final String _key; final String _key;
final T _defaultValue; final T _defaultValue;
final T Function(String)? _mapFrom;
final String Function(T)? _mapTo;
static AutoDisposeNotifierProvider<PrefNotifier<T>, T> provider<T>( static AutoDisposeNotifierProvider<PrefNotifier<T>, T> provider<T>(
String key, String key,
T defaultValue, T defaultValue, {
) => T Function(String value)? mapFrom,
String Function(T value)? mapTo,
}) =>
NotifierProvider.autoDispose( NotifierProvider.autoDispose(
() => PrefNotifier(key, defaultValue), () => PrefNotifier(key, defaultValue, mapFrom, mapTo),
); );
SharedPreferences get _prefs => ref.read(sharedPreferencesProvider); SharedPreferences get _prefs => ref.read(sharedPreferencesProvider);
/// Updates the value asynchronously. /// Updates the value asynchronously.
Future<void> update(T value) async { Future<void> update(T value) async {
if (value is String) { if (_mapTo != null && _mapFrom != null) {
await _prefs.setString(_key, value); await _prefs.setString(_key, _mapTo!(value));
} else if (value is bool) { } else {
await _prefs.setBool(_key, value); switch (value) {
} else if (value is int) { case String _:
await _prefs.setInt(_key, value); await _prefs.setString(_key, value);
} else if (value is double) { case bool _:
await _prefs.setDouble(_key, value); await _prefs.setBool(_key, value);
} else if (value is List<String>) { case int _:
await _prefs.setStringList(_key, value); await _prefs.setInt(_key, value);
case double _:
await _prefs.setDouble(_key, value);
case List<String> _:
await _prefs.setStringList(_key, value);
}
} }
super.state = value; super.state = value;
} }
@override @override
T build() { T build() {
if (_mapTo != null && _mapFrom != null) {
final persisted = _prefs.getString(_key);
return persisted != null ? _mapFrom!(persisted) : _defaultValue;
}
return _prefs.get(_key) as T? ?? _defaultValue; return _prefs.get(_key) as T? ?? _defaultValue;
} }
} }

9
lib/utils/validators.dart
View File

@@ -3,7 +3,16 @@ final _urlRegex = RegExp(
r"^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\u00a1-\uffff][a-z0-9\u00a1-\uffff_-]{0,62})?[a-z0-9\u00a1-\uffff]\.)+(?:[a-z\u00a1-\uffff]{2,}\.?))(?::\d{2,5})?(?:[/?#]\S*)?$", r"^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\u00a1-\uffff][a-z0-9\u00a1-\uffff_-]{0,62})?[a-z0-9\u00a1-\uffff]\.)+(?:[a-z\u00a1-\uffff]{2,}\.?))(?::\d{2,5})?(?:[/?#]\S*)?$",
); );
/// https://stackoverflow.com/a/12968117
final _portRegex = RegExp(
r"^([1-9][0-9]{0,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])$",
);
/// https://stackoverflow.com/questions/3809401/what-is-a-good-regular-expression-to-match-a-url/3809435#3809435 /// https://stackoverflow.com/questions/3809401/what-is-a-good-regular-expression-to-match-a-url/3809435#3809435
bool isUrl(String input) { bool isUrl(String input) {
return _urlRegex.hasMatch(input.trim().toLowerCase()); return _urlRegex.hasMatch(input.trim().toLowerCase());
} }
bool isPort(String input) {
return _portRegex.hasMatch(input);
}