35 lines
1.2 KiB
Dart
35 lines
1.2 KiB
Dart
import 'package:dio/dio.dart';
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import 'emergency_notice.dart';
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/// Loads the emergency notice from a foreign URL over a standalone [Dio]
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/// instance — no MarianumConnect interceptors, base URL or auth. That keeps the
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/// fallback fully independent of the backend it is meant to survive.
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///
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/// Fail-safe by contract: if the server is unreachable, times out, answers with
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/// a non-2xx status or delivers unparsable content, [fetch] returns `null` and
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/// nothing is shown. It never throws.
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class EmergencyNoticeClient {
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const EmergencyNoticeClient();
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Future<EmergencyNotice?> fetch(String url) async {
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try {
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final dio = Dio(
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BaseOptions(
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connectTimeout: const Duration(seconds: 5),
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receiveTimeout: const Duration(seconds: 5),
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sendTimeout: const Duration(seconds: 5),
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responseType: ResponseType.plain,
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),
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);
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final response = await dio.get<String>(url);
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final raw = response.data;
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if (raw == null || raw.isEmpty) return null;
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return EmergencyNotice.parse(raw);
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} catch (_) {
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// Server down / timeout / bad status / malformed body: show nothing.
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return null;
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}
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}
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}
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