feat(contacts): добавление контакта через NFC

2026-06-21 07:49:15 +00:00
parent d53f974ddb
commit 1299f1af2f
10 changed files with 722 additions and 1 deletions
@@ -0,0 +1,67 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter/services.dart';
+
+enum NfcEventType { received, cancelled }
+
+class NfcEvent {
+  final NfcEventType type;
+  final int? id;
+
+  const NfcEvent(this.type, this.id);
+}
+
+class NfcStatus {
+  final bool supported;
+  final bool enabled;
+
+  const NfcStatus({required this.supported, required this.enabled});
+
+  bool get ready => supported && enabled;
+}
+
+class NfcExchangeService {
+  NfcExchangeService._();
+  static final NfcExchangeService instance = NfcExchangeService._();
+
+  static const MethodChannel _method = MethodChannel('ru.komet.app/nfc');
+  static const EventChannel _events = EventChannel('ru.komet.app/nfc_events');
+
+  bool get _supported => Platform.isAndroid;
+
+  Future<NfcStatus> status() async {
+    if (!_supported) return const NfcStatus(supported: false, enabled: false);
+    try {
+      final res = await _method.invokeMapMethod<String, dynamic>('status');
+      return NfcStatus(
+        supported: res?['supported'] == true,
+        enabled: res?['enabled'] == true,
+      );
+    } catch (_) {
+      return const NfcStatus(supported: false, enabled: false);
+    }
+  }
+
+  Stream<NfcEvent> get events =>
+      _events.receiveBroadcastStream().map(_decodeEvent);
+
+  Future<void> start(int selfId) =>
+      _method.invokeMethod('start', {'selfId': selfId});
+
+  Future<void> stop() async {
+    if (!_supported) return;
+    try {
+      await _method.invokeMethod('stop');
+    } catch (_) {}
+  }
+
+  NfcEvent _decodeEvent(dynamic raw) {
+    final map = raw is Map ? raw : const {};
+    final id = map['id'];
+    final type = map['event'] == 'received'
+        ? NfcEventType.received
+        : NfcEventType.cancelled;
+    return NfcEvent(type, id is int ? id : (id is num ? id.toInt() : null));
+  }
+}