40 lines
875 B
Dart
40 lines
875 B
Dart
import 'dart:convert';
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import 'package:shared_preferences/shared_preferences.dart';
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const String kGuessSpKey = 'guess-config';
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class SpStorage {
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SpStorage._();
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static SpStorage? _storage;
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static SpStorage get instance {
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_storage = _storage ?? SpStorage._();
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return _storage!;
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}
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SharedPreferences? _sp;
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Future<void> initSpWhenNull() async {
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if (_sp != null) return;
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_sp = _sp ?? await SharedPreferences.getInstance();
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}
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Future<bool> saveGuessConfig({
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bool? guessing,
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int? value,
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}) async {
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await initSpWhenNull();
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String content = json.encode({'guessing': guessing, 'value': value});
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return _sp!.setString(kGuessSpKey, content);
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}
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Future<Map<String,dynamic>> readGuessConfig() async {
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await initSpWhenNull();
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String content = _sp!.getString(kGuessSpKey)??"{}";
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return json.decode(content);
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}
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}
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