feat: фул интеграция FCM с андроидом нах

lib/core/storage/spoofing_service.dart

@@ -115,9 +115,11 @@ class SpoofingService {
     return profile;
   }
 
-  static Future<Map<String, dynamic>?> getSpoofedSessionData() async {
+  static Future<Map<String, dynamic>?> getSpoofedSessionData({
+    String? scope,
+  }) async {
     final prefs = await SharedPreferences.getInstance();
-    final profile = await _read(prefs, await activeScope());
+    final profile = await _read(prefs, scope ?? await activeScope());
     if (profile == null || !profile.enabled) return null;
 
     return {

lib/core/storage/typing_store.dart

@@ -0,0 +1,57 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+
+class TypingStore {
+  TypingStore._();
+
+  static final TypingStore instance = TypingStore._();
+
+  static const Duration _ttl = Duration(seconds: 6);
+
+  final Map<int, Set<int>> _users = {};
+  final Map<int, Map<int, Timer>> _timers = {};
+  final Map<int, ValueNotifier<bool>> _notifiers = {};
+
+  ValueListenable<bool> listenable(int chatId) => _notifiers.putIfAbsent(
+    chatId,
+    () => ValueNotifier<bool>(_users[chatId]?.isNotEmpty ?? false),
+  );
+
+  bool isTyping(int chatId) => _users[chatId]?.isNotEmpty ?? false;
+
+  void markTyping(int chatId, int userId) {
+    final timers = _timers.putIfAbsent(chatId, () => <int, Timer>{});
+    timers[userId]?.cancel();
+    timers[userId] = Timer(_ttl, () => _remove(chatId, userId));
+    _users.putIfAbsent(chatId, () => <int>{}).add(userId);
+    _sync(chatId);
+  }
+
+  void clearUser(int chatId, int userId) => _remove(chatId, userId);
+
+  void clearChat(int chatId) {
+    final timers = _timers.remove(chatId);
+    if (timers != null) {
+      for (final timer in timers.values) {
+        timer.cancel();
+      }
+    }
+    _users.remove(chatId);
+    _sync(chatId);
+  }
+
+  void _remove(int chatId, int userId) {
+    _timers[chatId]?.remove(userId)?.cancel();
+    final users = _users[chatId];
+    if (users != null) {
+      users.remove(userId);
+      if (users.isEmpty) _users.remove(chatId);
+    }
+    _sync(chatId);
+  }
+
+  void _sync(int chatId) {
+    _notifiers[chatId]?.value = _users[chatId]?.isNotEmpty ?? false;
+  }
+}