refactor power

lib/core/blocs/session/session_bloc.dart

@@ -0,0 +1,80 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:equatable/equatable.dart';
+import 'package:flux/core/enums/enums.dart';
+import 'package:get_it/get_it.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'dart:async';
+import 'package:supabase_flutter/supabase_flutter.dart';
+
+part 'session_events.dart';
+part 'session_state.dart';
+
+class SessionBloc extends Bloc<SessionEvent, SessionState> {
+  final SupabaseClient _supabase = GetIt.I.get<SupabaseClient>();
+  StreamSubscription<AuthState>? _authSubscription;
+
+  SessionBloc() : super(const SessionState.unknown()) {
+    on<AppStarted>((event, emit) {
+      // 1. Controlla la sessione attuale al boot
+      final session = _supabase.auth.currentSession;
+      if (session != null) {
+        add(UserChanged(session.user.id));
+      } else {
+        add(UserChanged(null));
+      }
+
+      // 2. Ascolta i cambiamenti futuri (login, logout, token scaduto)
+      _authSubscription = _supabase.auth.onAuthStateChange.listen((data) {
+        final userId = data.session?.user.id;
+        add(UserChanged(userId));
+      });
+    });
+
+    on<UserChanged>((event, emit) async {
+      if (event.userId == null) {
+        emit(SessionState.unauthenticated());
+        return;
+      }
+      // 1. Controlla se l'utente ha una Company
+      final company = await _supabase
+          .from('company')
+          .select()
+          .eq('user_id', event.userId!)
+          .maybeSingle();
+
+      if (company == null) {
+        emit(SessionState.authenticatedNoCompany(event.userId!));
+        return;
+      }
+
+      // 2. Controlla i negozi
+      final stores = await _supabase
+          .from('store')
+          .select()
+          .eq('company_id', company['id']);
+
+      if (stores.isEmpty) {
+        emit(SessionState.authenticatedNoStore(event.userId!, company['id']));
+        return;
+      }
+
+      // 3. Tutto ok, gestiamo le SharedPreferences per il negozio
+      final prefs = GetIt.I.get<SharedPreferences>();
+      String? lastStoreId = prefs.getString(PrefKeys.lastStore.value);
+
+      // Se non c'è nelle SharedPreferences, prendi il primo della lista
+      if (lastStoreId == null || !stores.any((s) => s['id'] == lastStoreId)) {
+        lastStoreId = stores.first['id'];
+        await prefs.setString('last_store_id', lastStoreId!);
+      }
+    });
+  }
+
+  @override
+  Future<void> close() {
+    _authSubscription?.cancel();
+    return super.close();
+  }
+}
+
+class SharedPreferencesKeys {}