Files
meshcore-sar_android/lib/providers/sensors_provider.dart
2026-03-22 09:19:33 +01:00

855 lines
25 KiB
Dart

import 'dart:async';
import 'dart:convert';
import 'package:flutter/foundation.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../models/contact.dart';
import '../services/profiles_feature_service.dart';
import '../widgets/sensors/sensor_telemetry_card.dart';
import 'connection_provider.dart';
import 'contacts_provider.dart';
enum SensorRefreshState { idle, refreshing, success, timeout, unavailable }
class SensorsProvider with ChangeNotifier {
static const Duration _successStateRetention = Duration(minutes: 1);
static const int selfAutoRefreshMinutes = 1;
static const String _watchedSensorsKey = 'watched_sensor_keys';
static const String _visibleSensorMetricsKey = 'visible_sensor_metrics';
static const String _fieldSpanKey = 'sensor_field_spans';
static const String _metricLabelKey = 'sensor_metric_labels';
static const String _metricOrderKey = 'sensor_metric_order';
static const String _autoRefreshMinutesKey = 'sensor_auto_refresh_minutes';
static const List<int> supportedAutoRefreshIntervals = <int>[
0,
5,
15,
30,
60,
360,
720,
1440,
];
static const Set<String> _defaultVisibleFields = <String>{
'voltage',
'battery',
'temperature',
'humidity',
'pressure',
'gps',
};
static const List<String> _defaultMetricOrder = <String>[
'voltage',
'battery',
'temperature',
'humidity',
'pressure',
'gps',
];
final List<String> _watchedSensorKeys = <String>[];
final Map<String, SensorRefreshState> _refreshStates =
<String, SensorRefreshState>{};
final Map<String, DateTime> _refreshStateUpdatedAt = <String, DateTime>{};
final Map<String, Set<String>> _visibleFieldsBySensor =
<String, Set<String>>{};
final Map<String, Map<String, int>> _fieldSpansBySensor =
<String, Map<String, int>>{};
final Map<String, Map<String, String>> _metricLabelsBySensor =
<String, Map<String, String>>{};
final Map<String, List<String>> _metricOrderBySensor =
<String, List<String>>{};
final Map<String, int> _autoRefreshMinutesBySensor = <String, int>{};
final Map<String, DateTime> _lastRefreshAttemptAt = <String, DateTime>{};
bool _isLoaded = false;
bool _isRefreshingAll = false;
bool _isRunningAutoRefreshTick = false;
SensorsProvider() {
unawaited(_loadWatchedSensors());
}
String _key(String baseKey) => ProfileStorageScope.scopedKey(baseKey);
List<String> get watchedSensorKeys => List.unmodifiable(_watchedSensorKeys);
bool get isLoaded => _isLoaded;
bool get isRefreshingAll => _isRefreshingAll;
SensorRefreshState stateFor(String publicKeyHex) =>
_refreshStates[publicKeyHex] ?? SensorRefreshState.idle;
Future<void> _loadWatchedSensors() async {
try {
final prefs = await SharedPreferences.getInstance();
final stored =
prefs.getStringList(_key(_watchedSensorsKey)) ?? <String>[];
final storedMetricsJson = prefs.getString(_key(_visibleSensorMetricsKey));
final storedSpansJson = prefs.getString(_key(_fieldSpanKey));
final storedLabelsJson = prefs.getString(_key(_metricLabelKey));
final storedOrderJson = prefs.getString(_key(_metricOrderKey));
final storedAutoRefreshJson = prefs.getString(
_key(_autoRefreshMinutesKey),
);
_watchedSensorKeys
..clear()
..addAll(stored);
_refreshStates.clear();
_refreshStateUpdatedAt.clear();
_visibleFieldsBySensor.clear();
_fieldSpansBySensor.clear();
_metricLabelsBySensor.clear();
_metricOrderBySensor.clear();
_autoRefreshMinutesBySensor.clear();
_lastRefreshAttemptAt.clear();
if (storedMetricsJson != null && storedMetricsJson.isNotEmpty) {
final decoded = jsonDecode(storedMetricsJson) as Map<String, dynamic>;
for (final entry in decoded.entries) {
_visibleFieldsBySensor[entry.key] = (entry.value as List<dynamic>)
.cast<String>()
.toSet();
}
}
if (storedSpansJson != null && storedSpansJson.isNotEmpty) {
final decoded = jsonDecode(storedSpansJson) as Map<String, dynamic>;
for (final entry in decoded.entries) {
_fieldSpansBySensor[entry.key] = (entry.value as Map<String, dynamic>)
.map((key, value) => MapEntry(key, value as int));
}
}
if (storedLabelsJson != null && storedLabelsJson.isNotEmpty) {
final decoded = jsonDecode(storedLabelsJson) as Map<String, dynamic>;
for (final entry in decoded.entries) {
_metricLabelsBySensor[entry.key] =
(entry.value as Map<String, dynamic>).map(
(key, value) => MapEntry(key, value as String),
);
}
}
if (storedOrderJson != null && storedOrderJson.isNotEmpty) {
final decoded = jsonDecode(storedOrderJson) as Map<String, dynamic>;
for (final entry in decoded.entries) {
_metricOrderBySensor[entry.key] = (entry.value as List<dynamic>)
.cast<String>()
.toList();
}
}
if (storedAutoRefreshJson != null && storedAutoRefreshJson.isNotEmpty) {
final decoded =
jsonDecode(storedAutoRefreshJson) as Map<String, dynamic>;
for (final entry in decoded.entries) {
final minutes = _normalizeAutoRefreshMinutes(
(entry.value as num).toInt(),
);
if (minutes > 0) {
_autoRefreshMinutesBySensor[entry.key] = minutes;
}
}
}
_autoRefreshMinutesBySensor.removeWhere(
(key, _) => !_watchedSensorKeys.contains(key),
);
for (final key in _watchedSensorKeys) {
_visibleFieldsBySensor.putIfAbsent(
key,
() => Set<String>.from(_defaultVisibleFields),
);
_fieldSpansBySensor.putIfAbsent(key, () => <String, int>{});
_metricLabelsBySensor.putIfAbsent(key, () => <String, String>{});
_metricOrderBySensor.putIfAbsent(
key,
() => List<String>.from(_defaultMetricOrder),
);
}
} catch (e) {
debugPrint('Error loading watched sensors: $e');
} finally {
_isLoaded = true;
notifyListeners();
}
}
Future<void> reloadProfileScopedState() async {
_isLoaded = false;
await _loadWatchedSensors();
}
Future<void> _persistWatchedSensors() async {
try {
final prefs = await SharedPreferences.getInstance();
await prefs.setStringList(_key(_watchedSensorsKey), _watchedSensorKeys);
} catch (e) {
debugPrint('Error saving watched sensors: $e');
}
}
Future<void> _persistVisibleMetrics() async {
try {
final prefs = await SharedPreferences.getInstance();
final encoded = <String, List<String>>{};
for (final entry in _visibleFieldsBySensor.entries) {
encoded[entry.key] = entry.value.toList();
}
await prefs.setString(
_key(_visibleSensorMetricsKey),
jsonEncode(encoded),
);
} catch (e) {
debugPrint('Error saving visible sensor metrics: $e');
}
}
Future<void> _persistFieldSpans() async {
try {
final prefs = await SharedPreferences.getInstance();
await prefs.setString(
_key(_fieldSpanKey),
jsonEncode(_fieldSpansBySensor),
);
} catch (e) {
debugPrint('Error saving sensor field spans: $e');
}
}
Future<void> _persistMetricLabels() async {
try {
final prefs = await SharedPreferences.getInstance();
await prefs.setString(
_key(_metricLabelKey),
jsonEncode(_metricLabelsBySensor),
);
} catch (e) {
debugPrint('Error saving sensor metric labels: $e');
}
}
Future<void> _persistMetricOrder() async {
try {
final prefs = await SharedPreferences.getInstance();
await prefs.setString(
_key(_metricOrderKey),
jsonEncode(_metricOrderBySensor),
);
} catch (e) {
debugPrint('Error saving sensor metric order: $e');
}
}
Future<void> _persistAutoRefreshMinutes() async {
try {
final prefs = await SharedPreferences.getInstance();
await prefs.setString(
_key(_autoRefreshMinutesKey),
jsonEncode(_autoRefreshMinutesBySensor),
);
} catch (e) {
debugPrint('Error saving sensor auto refresh minutes: $e');
}
}
Set<String> visibleFieldsFor(String publicKeyHex) => Set<String>.unmodifiable(
_visibleFieldsBySensor[publicKeyHex] ?? _defaultVisibleFields,
);
Set<String> effectiveVisibleFieldsFor(
String publicKeyHex,
Iterable<String> availableFieldKeys,
) {
final storedVisibleFields =
_visibleFieldsBySensor[publicKeyHex] ?? _defaultVisibleFields;
if (!_shouldAutoIncludeAvailableFields(publicKeyHex, storedVisibleFields)) {
return Set<String>.unmodifiable(storedVisibleFields);
}
return Set<String>.unmodifiable(<String>{
...storedVisibleFields,
...availableFieldKeys,
});
}
bool showsField(String publicKeyHex, String fieldKey) =>
visibleFieldsFor(publicKeyHex).contains(fieldKey);
int fieldSpanFor(String publicKeyHex, String fieldKey) {
final sensorSpans = _fieldSpansBySensor[publicKeyHex];
final span = sensorSpans?[fieldKey] ?? 1;
return span == 2 ? 2 : 1;
}
List<String> metricOrderFor(
String publicKeyHex,
Iterable<String> availableFieldKeys,
) {
final available = availableFieldKeys.toList();
final availableSet = available.toSet();
final ordered = <String>[];
final seen = <String>{};
final stored =
_metricOrderBySensor[publicKeyHex] ??
List<String>.from(_defaultMetricOrder);
for (final fieldKey in stored) {
if (availableSet.contains(fieldKey) && seen.add(fieldKey)) {
ordered.add(fieldKey);
}
}
for (final fieldKey in available) {
if (seen.add(fieldKey)) {
ordered.add(fieldKey);
}
}
return List<String>.unmodifiable(ordered);
}
Map<String, String> labelOverridesFor(String publicKeyHex) =>
Map<String, String>.unmodifiable(
_metricLabelsBySensor[publicKeyHex] ?? const <String, String>{},
);
String? labelOverrideFor(String publicKeyHex, String fieldKey) =>
_metricLabelsBySensor[publicKeyHex]?[fieldKey];
int autoRefreshMinutesFor(String publicKeyHex) =>
_autoRefreshMinutesBySensor[publicKeyHex] ?? 0;
Future<void> setAutoRefreshMinutes(String publicKeyHex, int minutes) async {
final normalizedMinutes = _normalizeAutoRefreshMinutes(minutes);
final currentMinutes = autoRefreshMinutesFor(publicKeyHex);
if (currentMinutes == normalizedMinutes) {
return;
}
if (normalizedMinutes == 0) {
_autoRefreshMinutesBySensor.remove(publicKeyHex);
} else {
_autoRefreshMinutesBySensor[publicKeyHex] = normalizedMinutes;
}
await _persistAutoRefreshMinutes();
notifyListeners();
}
static int _normalizeAutoRefreshMinutes(int minutes) {
if (minutes <= 0) {
return 0;
}
if (supportedAutoRefreshIntervals.contains(minutes)) {
return minutes;
}
final positiveIntervals = supportedAutoRefreshIntervals.where(
(value) => value > 0,
);
var bestMatch = positiveIntervals.first;
var bestDistance = (minutes - bestMatch).abs();
for (final interval in positiveIntervals.skip(1)) {
final distance = (minutes - interval).abs();
if (distance < bestDistance) {
bestMatch = interval;
bestDistance = distance;
}
}
return bestMatch;
}
List<String> dueAutoRefreshSensorKeys({DateTime? now}) {
final refreshTime = now ?? DateTime.now();
final dueKeys = <String>[];
for (final key in _watchedSensorKeys) {
final minutes = autoRefreshMinutesFor(key);
if (minutes <= 0) {
continue;
}
final lastRefreshAt = _lastRefreshAttemptAt[key];
if (lastRefreshAt == null ||
refreshTime.difference(lastRefreshAt) >= Duration(minutes: minutes)) {
dueKeys.add(key);
}
}
return List<String>.unmodifiable(dueKeys);
}
bool _isRefreshDue(
String publicKeyHex, {
required int minutes,
required DateTime refreshTime,
}) {
if (minutes <= 0) {
return false;
}
final lastRefreshAt = _lastRefreshAttemptAt[publicKeyHex];
return lastRefreshAt == null ||
refreshTime.difference(lastRefreshAt) >= Duration(minutes: minutes);
}
Future<void> toggleMetric(
String publicKeyHex,
String fieldKey,
bool visible,
) async {
final visibleFields = _visibleFieldsBySensor.putIfAbsent(
publicKeyHex,
() => Set<String>.from(_defaultVisibleFields),
);
final metricOrder = _metricOrderBySensor.putIfAbsent(
publicKeyHex,
() => List<String>.from(_defaultMetricOrder),
);
var shouldPersistOrder = false;
if (visible) {
visibleFields.add(fieldKey);
if (!metricOrder.contains(fieldKey)) {
metricOrder.add(fieldKey);
shouldPersistOrder = true;
}
} else {
if (visibleFields.length == 1 && visibleFields.contains(fieldKey)) {
return;
}
visibleFields.remove(fieldKey);
}
await _persistVisibleMetrics();
if (shouldPersistOrder) {
await _persistMetricOrder();
}
notifyListeners();
}
Future<void> setFieldSpan(
String publicKeyHex,
String fieldKey,
int span,
) async {
final sensorSpans = _fieldSpansBySensor.putIfAbsent(
publicKeyHex,
() => <String, int>{},
);
sensorSpans[fieldKey] = span == 2 ? 2 : 1;
await _persistFieldSpans();
notifyListeners();
}
Future<void> setMetricLabel(
String publicKeyHex,
String fieldKey,
String? label,
) async {
final sensorLabels = _metricLabelsBySensor.putIfAbsent(
publicKeyHex,
() => <String, String>{},
);
final trimmed = label?.trim();
if (trimmed == null || trimmed.isEmpty) {
sensorLabels.remove(fieldKey);
} else {
sensorLabels[fieldKey] = trimmed;
}
if (sensorLabels.isEmpty) {
_metricLabelsBySensor.remove(publicKeyHex);
}
await _persistMetricLabels();
notifyListeners();
}
Future<void> moveMetric(
String publicKeyHex, {
required List<String> availableFieldKeys,
required int oldIndex,
required int newIndex,
}) async {
if (oldIndex < 0 ||
newIndex < 0 ||
oldIndex >= availableFieldKeys.length ||
newIndex >= availableFieldKeys.length ||
oldIndex == newIndex) {
return;
}
final reordered = List<String>.from(
metricOrderFor(publicKeyHex, availableFieldKeys),
);
final fieldKey = reordered.removeAt(oldIndex);
reordered.insert(newIndex, fieldKey);
final storedTail =
(_metricOrderBySensor[publicKeyHex] ?? _defaultMetricOrder).where(
(key) => !reordered.contains(key),
);
_metricOrderBySensor[publicKeyHex] = <String>[...reordered, ...storedTail];
await _persistMetricOrder();
notifyListeners();
}
bool isWatched(String publicKeyHex) =>
_watchedSensorKeys.contains(publicKeyHex);
Contact? selfContact(
ContactsProvider contactsProvider,
ConnectionProvider connectionProvider,
) {
final selfKey = connectionProvider.deviceInfo.publicKey;
if (selfKey == null || selfKey.isEmpty) {
return null;
}
final existing = contactsProvider.findContactByKey(
Uint8List.fromList(selfKey),
);
final selfTelemetry = contactsProvider.selfTelemetry;
if (existing != null) {
return selfTelemetry == null
? existing
: existing.copyWith(telemetry: selfTelemetry);
}
return _buildSelfCandidate(connectionProvider, telemetry: selfTelemetry);
}
Future<void> addSensor(Contact contact) async {
if (!contact.isChat && !contact.isRepeater && !contact.isSensor) {
return;
}
if (_watchedSensorKeys.contains(contact.publicKeyHex)) {
return;
}
_watchedSensorKeys.add(contact.publicKeyHex);
final initialVisibleFields = _initialVisibleFieldsForContact(contact);
await _persistWatchedSensors();
_visibleFieldsBySensor[contact.publicKeyHex] = initialVisibleFields;
_fieldSpansBySensor[contact.publicKeyHex] = <String, int>{'gps': 2};
_metricLabelsBySensor[contact.publicKeyHex] = <String, String>{};
_metricOrderBySensor[contact.publicKeyHex] = metricOrderFor(
contact.publicKeyHex,
initialVisibleFields,
);
await _persistVisibleMetrics();
await _persistFieldSpans();
await _persistMetricLabels();
await _persistMetricOrder();
notifyListeners();
}
bool _shouldAutoIncludeAvailableFields(
String publicKeyHex,
Set<String> storedVisibleFields,
) {
if (!setEquals(storedVisibleFields, _defaultVisibleFields)) {
return false;
}
final storedOrder = _metricOrderBySensor[publicKeyHex];
if (storedOrder != null && !listEquals(storedOrder, _defaultMetricOrder)) {
return false;
}
final storedLabels = _metricLabelsBySensor[publicKeyHex];
if (storedLabels != null && storedLabels.isNotEmpty) {
return false;
}
final storedSpans = _fieldSpansBySensor[publicKeyHex];
if (storedSpans != null &&
!(storedSpans.length == 1 && storedSpans['gps'] == 2)) {
return false;
}
return true;
}
Set<String> _initialVisibleFieldsForContact(Contact contact) {
return <String>{..._defaultVisibleFields, ...sensorMetricKeysFor(contact)};
}
Future<void> removeSensor(String publicKeyHex) async {
_watchedSensorKeys.remove(publicKeyHex);
_refreshStates.remove(publicKeyHex);
_refreshStateUpdatedAt.remove(publicKeyHex);
_visibleFieldsBySensor.remove(publicKeyHex);
_fieldSpansBySensor.remove(publicKeyHex);
_metricLabelsBySensor.remove(publicKeyHex);
_metricOrderBySensor.remove(publicKeyHex);
_autoRefreshMinutesBySensor.remove(publicKeyHex);
_lastRefreshAttemptAt.remove(publicKeyHex);
await _persistWatchedSensors();
await _persistVisibleMetrics();
await _persistFieldSpans();
await _persistMetricLabels();
await _persistMetricOrder();
await _persistAutoRefreshMinutes();
notifyListeners();
}
Future<void> reorderSensors(int oldIndex, int newIndex) async {
if (_watchedSensorKeys.length < 2) {
return;
}
if (oldIndex < 0 ||
oldIndex >= _watchedSensorKeys.length ||
newIndex < 0 ||
newIndex > _watchedSensorKeys.length) {
return;
}
var targetIndex = newIndex;
if (oldIndex < targetIndex) {
targetIndex -= 1;
}
if (oldIndex == targetIndex) {
return;
}
final movedKey = _watchedSensorKeys.removeAt(oldIndex);
_watchedSensorKeys.insert(targetIndex, movedKey);
await _persistWatchedSensors();
notifyListeners();
}
List<Contact> availableCandidates(
ContactsProvider contactsProvider, {
ConnectionProvider? connectionProvider,
}) {
final candidates = <Contact>[
...contactsProvider.chatContacts,
...contactsProvider.repeaters,
...contactsProvider.sensorContacts,
];
// Add "myself" (own device) as a candidate if it has a public key
if (connectionProvider != null) {
final self = selfContact(contactsProvider, connectionProvider);
if (self != null &&
!candidates.any((c) => c.publicKeyHex == self.publicKeyHex)) {
candidates.insert(0, self);
}
}
candidates.removeWhere((contact) => isWatched(contact.publicKeyHex));
candidates.sort((a, b) => b.lastSeenTime.compareTo(a.lastSeenTime));
return candidates;
}
List<String> displaySensorKeys({
required ContactsProvider contactsProvider,
required ConnectionProvider connectionProvider,
}) {
if (_watchedSensorKeys.isNotEmpty) {
return List<String>.unmodifiable(_watchedSensorKeys);
}
final self = selfContact(contactsProvider, connectionProvider);
if (self == null) {
return const <String>[];
}
return <String>[self.publicKeyHex];
}
String? displaySelfKey({
required ContactsProvider contactsProvider,
required ConnectionProvider connectionProvider,
}) {
final self = selfContact(contactsProvider, connectionProvider);
if (self == null || _watchedSensorKeys.contains(self.publicKeyHex)) {
return null;
}
return self.publicKeyHex;
}
Contact? contactForDisplay(
String publicKeyHex, {
required ContactsProvider contactsProvider,
required ConnectionProvider connectionProvider,
}) {
for (final entry in contactsProvider.contacts) {
if (entry.publicKeyHex == publicKeyHex) {
return entry;
}
}
final self = selfContact(contactsProvider, connectionProvider);
if (self?.publicKeyHex == publicKeyHex) {
return self;
}
return null;
}
Future<void> refreshAll({
required ContactsProvider contactsProvider,
required ConnectionProvider connectionProvider,
}) async {
if (_isRefreshingAll) {
return;
}
final self = selfContact(contactsProvider, connectionProvider);
final keysToRefresh = <String>[
if (self != null) self.publicKeyHex,
..._watchedSensorKeys.where(
(key) => self == null || key != self.publicKeyHex,
),
];
if (keysToRefresh.isEmpty) {
return;
}
_isRefreshingAll = true;
notifyListeners();
try {
for (final key in keysToRefresh) {
await refreshSensor(
publicKeyHex: key,
contactsProvider: contactsProvider,
connectionProvider: connectionProvider,
);
}
} finally {
_isRefreshingAll = false;
notifyListeners();
}
}
Future<void> refreshSensor({
required String publicKeyHex,
required ContactsProvider contactsProvider,
required ConnectionProvider connectionProvider,
DateTime? requestedAt,
}) async {
if (stateFor(publicKeyHex) == SensorRefreshState.refreshing) {
return;
}
_lastRefreshAttemptAt[publicKeyHex] = requestedAt ?? DateTime.now();
final contact = contactForDisplay(
publicKeyHex,
contactsProvider: contactsProvider,
connectionProvider: connectionProvider,
);
if (contact == null) {
_setRefreshState(publicKeyHex, SensorRefreshState.unavailable);
return;
}
_setRefreshState(publicKeyHex, SensorRefreshState.refreshing);
final result = await connectionProvider.smartPing(
contactPublicKey: contact.publicKey,
hasPath: contact.hasPath,
);
_setRefreshState(
publicKeyHex,
result.success ? SensorRefreshState.success : SensorRefreshState.timeout,
);
}
Future<void> refreshDueSensors({
required ContactsProvider contactsProvider,
required ConnectionProvider connectionProvider,
DateTime? now,
}) async {
if (!connectionProvider.deviceInfo.isConnected ||
_isRefreshingAll ||
_isRunningAutoRefreshTick) {
return;
}
final refreshTime = now ?? DateTime.now();
final dueKeys = dueAutoRefreshSensorKeys(now: refreshTime).toList();
final self = selfContact(contactsProvider, connectionProvider);
if (self != null &&
!dueKeys.contains(self.publicKeyHex) &&
_isRefreshDue(
self.publicKeyHex,
minutes: selfAutoRefreshMinutes,
refreshTime: refreshTime,
)) {
dueKeys.insert(0, self.publicKeyHex);
}
if (dueKeys.isEmpty) {
return;
}
_isRunningAutoRefreshTick = true;
try {
for (final key in dueKeys) {
await refreshSensor(
publicKeyHex: key,
contactsProvider: contactsProvider,
connectionProvider: connectionProvider,
requestedAt: refreshTime,
);
}
} finally {
_isRunningAutoRefreshTick = false;
}
}
void clearExpiredRefreshStates({DateTime? now}) {
final cutoff = (now ?? DateTime.now()).subtract(_successStateRetention);
final keysToClear = <String>[];
for (final entry in _refreshStates.entries) {
if (entry.value != SensorRefreshState.success) {
continue;
}
final updatedAt = _refreshStateUpdatedAt[entry.key];
if (updatedAt == null || !updatedAt.isAfter(cutoff)) {
keysToClear.add(entry.key);
}
}
if (keysToClear.isEmpty) {
return;
}
for (final key in keysToClear) {
_refreshStates.remove(key);
_refreshStateUpdatedAt.remove(key);
}
notifyListeners();
}
void _setRefreshState(String publicKeyHex, SensorRefreshState state) {
_refreshStates[publicKeyHex] = state;
_refreshStateUpdatedAt[publicKeyHex] = DateTime.now();
notifyListeners();
}
Contact? _buildSelfCandidate(
ConnectionProvider connectionProvider, {
ContactTelemetry? telemetry,
}) {
final deviceInfo = connectionProvider.deviceInfo;
final selfKey = deviceInfo.publicKey;
if (selfKey == null || selfKey.isEmpty) {
return null;
}
return Contact(
publicKey: Uint8List.fromList(selfKey),
type: ContactType.chat,
flags: 0,
outPathLen: 0,
outPath: Uint8List(64),
advName: deviceInfo.selfName ?? 'My Device',
lastAdvert: DateTime.now().millisecondsSinceEpoch ~/ 1000,
advLat: deviceInfo.advLat ?? 0,
advLon: deviceInfo.advLon ?? 0,
lastMod: DateTime.now().millisecondsSinceEpoch ~/ 1000,
telemetry: telemetry,
);
}
}