60 lines
1.5 KiB
Dart
60 lines
1.5 KiB
Dart
import 'dart:convert';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../models/session.dart';
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class StorageService {
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static const _SESSION_KEY = 'session';
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static const _LAST_URL_KEY = 'last_url';
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Future<bool> storeLastUrl(String url) {
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return _store(_LAST_URL_KEY, url);
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}
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Future<String> retrieveLastUrl() async {
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return await _retrieve(_LAST_URL_KEY);
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}
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Future<bool> hasLastUrl() async {
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return await _exists(_LAST_URL_KEY);
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}
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Future<bool> storeSession(Session session) {
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return _store(_SESSION_KEY, json.encode(session));
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}
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Future<Session> retrieveSession() async {
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var retrieve = await _retrieve(_SESSION_KEY);
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return Session.fromJson(json.decode(retrieve));
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}
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Future<bool> hasSession() {
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return _exists(_SESSION_KEY);
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}
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Future<bool> removeSession() {
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return _remove(_SESSION_KEY);
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}
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Future<bool> _exists(String key) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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return prefs.containsKey(key);
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}
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Future<bool> _remove(String key) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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return prefs.remove(key);
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}
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Future<String> _retrieve(String key) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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return prefs.getString(key);
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}
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Future<bool> _store(String key, String value) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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return prefs.setString(key, value);
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}
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}
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