75 lines
2.2 KiB
Dart
75 lines
2.2 KiB
Dart
import 'dart:convert';
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import 'package:http/http.dart' as http;
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import 'package:shared_preferences/shared_preferences.dart';
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import '../config/api_config.dart';
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class AuthService {
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static const String _tokenKey = 'auth_token';
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static const String _expiresKey = 'token_expires';
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static const String _usernameKey = 'username';
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String? _token;
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DateTime? _expiresAt;
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String? _username;
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String? get token => _token;
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String? get username => _username;
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bool get isAuthenticated => _token != null && !isExpired;
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bool get isExpired =>
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_expiresAt != null && DateTime.now().isAfter(_expiresAt!);
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Future<void> loadStoredAuth() async {
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final prefs = await SharedPreferences.getInstance();
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_token = prefs.getString(_tokenKey);
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_username = prefs.getString(_usernameKey);
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final expiresStr = prefs.getString(_expiresKey);
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if (expiresStr != null) {
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_expiresAt = DateTime.tryParse(expiresStr);
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}
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}
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String? lastError;
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Future<bool> login(String username, String password) async {
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lastError = null;
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try {
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final response = await http.post(
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Uri.parse('${ApiConfig.baseUrl}/auth/login'),
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headers: {'Content-Type': 'application/json'},
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body: jsonEncode({'username': username, 'password': password}),
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).timeout(ApiConfig.connectionTimeout);
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if (response.statusCode == 200) {
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final data = jsonDecode(response.body);
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_token = data['token'];
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_expiresAt = DateTime.parse(data['expires_at']);
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_username = username;
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// Save to storage
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final prefs = await SharedPreferences.getInstance();
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await prefs.setString(_tokenKey, _token!);
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await prefs.setString(_expiresKey, _expiresAt!.toIso8601String());
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await prefs.setString(_usernameKey, _username!);
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return true;
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}
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lastError = 'Invalid credentials (${response.statusCode})';
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return false;
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} catch (e) {
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lastError = 'Connection error: $e';
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return false;
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}
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}
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Future<void> logout() async {
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_token = null;
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_expiresAt = null;
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_username = null;
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final prefs = await SharedPreferences.getInstance();
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await prefs.remove(_tokenKey);
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await prefs.remove(_expiresKey);
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await prefs.remove(_usernameKey);
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}
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}
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