wehub-resource-sync
75 lines
1.6 KiB
Dart
75 lines
1.6 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:shared_preferences_platform_interface/shared_preferences_platform_interface.dart';
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const _beautyEncoder = JsonEncoder.withIndent(' ');
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const _encoder = JsonEncoder();
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/// Custom implementation of SharedPreferencesStorePlatform
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/// that uses a custom file.
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class SharedPreferencesFile extends SharedPreferencesStorePlatform {
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final File _file;
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final bool beautify;
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SharedPreferencesFile({
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required String filePath,
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this.beautify = false,
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}) : _file = File(filePath);
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late final Map<String, Object> _cache = _getAll();
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bool exists() {
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return _file.existsSync();
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}
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String getPath() {
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return _file.path;
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}
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@override
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Future<bool> clear() {
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_write({});
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return Future.value(true);
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}
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@override
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Future<Map<String, Object>> getAll() async {
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return _cache;
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}
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Map<String, Object> _getAll() {
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if (!_file.existsSync()) {
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_file.createSync(recursive: true);
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}
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try {
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return json.decode(_file.readAsStringSync()).cast<String, Object>();
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} catch (e) {
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return {};
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}
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}
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@override
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Future<bool> remove(String key) {
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_cache.remove(key);
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_write(_cache);
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return Future.value(true);
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}
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@override
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Future<bool> setValue(String valueType, String key, Object value) {
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_cache[key] = value;
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_write(_cache);
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return Future.value(true);
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}
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void _write(Map<String, dynamic> data) {
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if (!_file.existsSync()) {
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_file.createSync(recursive: true);
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}
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_file.writeAsStringSync((beautify ? _beautyEncoder : _encoder).convert(data));
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}
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}
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