tane/apps/app_seeds/lib/services/coarse_location.dart
vjrj 5b52298160 fix(block2): sharing config UX + discovery + labels (raw feedback batch)
From on-device feedback:
- Area is no longer shown as a raw geohash 'name'. 'Use my location' is the
  primary action; a human status line says whether your area is set (coarse,
  never exact). The geohash code + the relay servers moved under 'Advanced'
  (code field labelled 'a code like sp3e9 — not a place name'), which also
  brings back node/relay selection that had been fully hidden.
- Location denial no longer yanks you into system settings — returns quietly
  with an actionable inline message.
- Discovery no longer spins forever when nobody's sharing nearby: a timeout
  resolves 'searching' to the empty state.
- Home card 'Open market' -> 'Market' + 'Discover and share seeds nearby'
  (the word 'open' confused).

i18n en/es/pt; analyzer clean; the use-my-location test asserts the status flip.
2026-07-10 13:32:11 +02:00

50 lines
2 KiB
Dart

import 'package:geolocator/geolocator.dart';
/// Supplies the device's *approximate* location (or null when unavailable or
/// denied). Behind an interface so the UI is fakeable in tests and the concrete
/// platform plugin stays at the composition root. The caller immediately reduces
/// the result to a low-precision geohash — a precise fix never leaves the device.
abstract interface class CoarseLocationProvider {
Future<({double lat, double lon})?> currentCoarseLatLon();
}
/// [geolocator]-backed implementation. Requests low accuracy only, and returns
/// null on any denial/error rather than throwing, so the UI can degrade quietly.
class GeolocatorCoarseLocation implements CoarseLocationProvider {
const GeolocatorCoarseLocation();
@override
Future<({double lat, double lon})?> currentCoarseLatLon() async {
try {
var permission = await Geolocator.checkPermission();
if (permission == LocationPermission.denied) {
permission = await Geolocator.requestPermission();
}
// Denied (or turned off): return null quietly — the UI shows an actionable
// message. We don't yank the user into system settings.
if (permission == LocationPermission.denied ||
permission == LocationPermission.deniedForever) {
return null;
}
if (!await Geolocator.isLocationServiceEnabled()) return null;
// A fresh coarse fix can take a while (or never come indoors); fall back
// to the last known position so the button stays responsive.
Position? position;
try {
position = await Geolocator.getCurrentPosition(
locationSettings: const LocationSettings(
accuracy: LocationAccuracy.low,
timeLimit: Duration(seconds: 12),
),
);
} catch (_) {
position = await Geolocator.getLastKnownPosition();
}
if (position == null) return null;
return (lat: position.latitude, lon: position.longitude);
} catch (_) {
return null; // plugin unsupported (desktop), etc.
}
}
}