49 lines
1.7 KiB
Dart
49 lines
1.7 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:connectivity_plus/connectivity_plus.dart';
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import 'package:internet_connection_checker/internet_connection_checker.dart';
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class NetGuard {
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static final NetGuard _i = NetGuard._();
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NetGuard._();
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factory NetGuard() => _i;
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bool _notified = false;
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/// فحص: (أ) فيه شبكة؟ (ب) فيه انترنت؟ (ج) السيرفر نفسه reachable؟
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Future<bool> hasInternet({Uri? mustReach}) async {
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final connectivity = await Connectivity().checkConnectivity();
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if (connectivity == ConnectivityResult.none) return false;
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final hasNet =
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await InternetConnectionChecker.createInstance().hasConnection;
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if (!hasNet) return false;
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if (mustReach != null) {
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try {
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final host = mustReach.host;
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final result = await InternetAddress.lookup(host);
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if (result.isEmpty || result.first.rawAddress.isEmpty) return false;
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// اختباري خفيف عبر TCP (80/443) — 400ms timeout
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final port = mustReach.scheme == 'http' ? 80 : 443;
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final socket = await Socket.connect(host, port,
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timeout: const Duration(milliseconds: 400));
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socket.destroy();
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} catch (_) {
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return false;
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}
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}
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return true;
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}
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/// إظهار إشعار مرة واحدة ثم إسكات التكرارات
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void notifyOnce(void Function(String title, String msg) show) {
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if (_notified) return;
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_notified = true;
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show('لا يوجد اتصال بالإنترنت', 'تحقق من الشبكة ثم حاول مجددًا.');
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// إعادة السماح بعد 15 ثانية
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Future.delayed(const Duration(seconds: 15), () => _notified = false);
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}
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}
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