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9c3ba83adb
Replace the signed-in mobile welcome screen with **Add a community**: QR scan first, then grey secondary actions for community links, finding saved communities, and creation. Hide **Find my communities** when none are known; refresh on entry/resume and every 30 seconds while active, retaining results on transient failure. Community switcher → Add keeps its two-action flow and uses the same grey secondary link button. Validation: Flutter analysis, full mobile suite (4,014 tests), Builderlab-enabled full suite (4,036 tests), widget interactions, and independent agent review. Draft pending native sign-in and human testing. Snapshots render the production Flutter widgets; native navigation/status bars are omitted. | Communities available | No communities | Switcher → Add | |---|---|---| |  |  |  | --------- Signed-off-by: kenny lopez <klopez4212@gmail.com> Co-authored-by: Terp <5856f6900e8e0a4e0ea1f4f8d2ee33e4753d2119bc122f94ecafc660b46c0511@buzz.block.builderlab.xyz>
57 lines
1.8 KiB
Dart
57 lines
1.8 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:flutter_hooks/flutter_hooks.dart';
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/// Refreshes account destinations only while the entry screen is active.
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/// A failed refresh preserves the last successful result for this account.
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bool useKnownCommunities({
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required String? accountKey,
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required bool active,
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required Future<bool> Function() load,
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}) {
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final available = useMemoized(() => ValueNotifier(false), [accountKey]);
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useEffect(() => available.dispose, [available]);
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useListenable(available);
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final latestLoad = useRef(load)..value = load;
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useEffect(() {
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if (accountKey == null || !active) return null;
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var disposed = false;
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var loading = false;
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Future<void> refresh() async {
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if (loading) return;
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loading = true;
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try {
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final result = await latestLoad.value();
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if (!disposed) available.value = result;
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} catch (_) {
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// Discovery is optional; an unavailable service is not an empty list.
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} finally {
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loading = false;
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}
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}
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Timer? timer;
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void lifecycleChanged(AppLifecycleState? state) {
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timer?.cancel();
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timer = null;
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if (state != null && state != AppLifecycleState.resumed) return;
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unawaited(refresh());
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timer = Timer.periodic(const Duration(seconds: 30), (_) {
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unawaited(refresh());
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});
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}
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// Lifecycle callbacks must stop timers immediately: paused apps do not
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// render a frame, so a rebuild-driven effect may never run its cleanup.
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final listener = AppLifecycleListener(onStateChange: lifecycleChanged);
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lifecycleChanged(WidgetsBinding.instance.lifecycleState);
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return () {
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disposed = true;
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timer?.cancel();
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listener.dispose();
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};
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}, [accountKey, active, available]);
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return available.value;
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}
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