39 lines
1.2 KiB
Dart
39 lines
1.2 KiB
Dart
 
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import 'dart:convert';
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import 'package:injectable/injectable.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../../../common/constant/local_storage_key.dart';
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import '../unit_dtos.dart';
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/// Satuan berjumlah sedikit dan jarang berubah, jadi cukup disimpan sebagai
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/// satu blob JSON di SharedPreferences — tidak perlu tabel sqflite sendiri.
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@injectable
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class UnitLocalDataProvider {
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final SharedPreferences _sharedPreferences;
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UnitLocalDataProvider(this._sharedPreferences);
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Future<void> saveUnits(List<UnitDto> units) async {
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final jsonString = jsonEncode(units.map((e) => e.toJson()).toList());
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await _sharedPreferences.setString(LocalStorageKey.units, jsonString);
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}
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List<UnitDto> getUnits() {
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final jsonString = _sharedPreferences.getString(LocalStorageKey.units);
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if (jsonString == null || jsonString.isEmpty) return const [];
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final decoded = jsonDecode(jsonString);
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if (decoded is! List) return const [];
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return decoded
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.whereType<Map<String, dynamic>>()
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.map(UnitDto.fromJson)
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.toList();
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}
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Future<void> clearUnits() async {
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await _sharedPreferences.remove(LocalStorageKey.units);
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}
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}
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