88 lines
2.6 KiB
Dart
88 lines
2.6 KiB
Dart
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import 'dart:convert';
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import 'package:flutter/foundation.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../../shared/utils/lru_eviction.dart';
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mixin SettingsPersistence {
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SharedPreferences? _prefs;
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Future<SharedPreferences> getPrefs() async {
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return _prefs ??= await SharedPreferences.getInstance();
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}
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Future<bool> persistField(String key, dynamic value) async {
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try {
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final p = await getPrefs();
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if (value == null) return p.remove(key);
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if (value is bool) return p.setBool(key, value);
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if (value is int) return p.setInt(key, value);
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if (value is double) return p.setDouble(key, value);
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if (value is String) return p.setString(key, value);
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if (value is List<String>) return p.setStringList(key, value);
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return false;
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} catch (e) {
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debugPrint('[SettingsPersistence] Failed to persist $key: $e');
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return false;
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}
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}
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Future<bool> persistFields(Map<String, dynamic> fields) async {
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try {
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final p = await getPrefs();
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final futures = <Future<bool>>[];
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for (final entry in fields.entries) {
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final key = entry.key;
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final value = entry.value;
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if (value == null) {
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futures.add(p.remove(key));
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} else if (value is bool) {
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futures.add(p.setBool(key, value));
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} else if (value is int) {
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futures.add(p.setInt(key, value));
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} else if (value is double) {
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futures.add(p.setDouble(key, value));
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} else if (value is String) {
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futures.add(p.setString(key, value));
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} else if (value is List<String>) {
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futures.add(p.setStringList(key, value));
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}
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}
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await Future.wait(futures);
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return true;
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} catch (e) {
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debugPrint('[SettingsPersistence] Failed to persist fields: $e');
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return false;
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}
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}
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Future<void> putRemembered(
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String prefsKey,
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String entryKey,
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Map<String, dynamic> entryJson,
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int maxEntries,
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) async {
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final p = await getPrefs();
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final raw = p.getString(prefsKey);
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final map = raw != null
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? (jsonDecode(raw) as Map<String, dynamic>)
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: <String, dynamic>{};
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map[entryKey] = entryJson;
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evictOldestEntries(map, maxEntries);
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await p.setString(prefsKey, jsonEncode(map));
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}
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Future<Map<String, dynamic>?> readRemembered(
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String prefsKey,
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String entryKey,
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) async {
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final raw = (await getPrefs()).getString(prefsKey);
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if (raw == null) return null;
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final entry = (jsonDecode(raw) as Map<String, dynamic>)[entryKey];
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return entry is Map<String, dynamic> ? entry : null;
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}
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}
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