Bluetooth e mapa a funcionar

lib/screens/bluetooth_connection_screen.dart

@@ -16,7 +16,7 @@ class BluetoothConnectionScreen extends StatefulWidget {
 class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
   List<ScanResult> _scanResults = [];
   bool _isScanning = false;
-  BluetoothDevice? _connectedDevice; // Track connected device
+  BluetoothDevice? _connectedDevice;
   late StreamSubscription<List<ScanResult>> _scanResultsSubscription;
   late StreamSubscription<bool> _isScanningSubscription;
 
@@ -27,7 +27,7 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
     _scanResultsSubscription = FlutterBluePlus.scanResults.listen((results) {
       if (mounted) {
         setState(() {
-          // FILTRO: Mantém apenas dispositivos que possuem um nome identificado
+          // Filtra os dispositivos para mostrar apenas aqueles que possuem um nome identificado
           _scanResults = results.where((r) => r.device.platformName.isNotEmpty).toList();
         });
       }
@@ -54,16 +54,30 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
       Map<Permission, PermissionStatus> statuses = await [
         Permission.bluetoothScan,
         Permission.bluetoothConnect,
+        Permission.bluetoothAdvertise,
         Permission.location,
       ].request();
 
-      if (statuses[Permission.bluetoothScan]!.isGranted &&
-          statuses[Permission.bluetoothConnect]!.isGranted) {
+      bool allGranted = true;
+      if (statuses[Permission.bluetoothScan]?.isDenied ?? true) allGranted = false;
+      if (statuses[Permission.bluetoothConnect]?.isDenied ?? true) allGranted = false;
+      
+      final bool scanPermanentlyDenied = statuses[Permission.bluetoothScan]?.isPermanentlyDenied ?? false;
+      final bool connectPermanentlyDenied = statuses[Permission.bluetoothConnect]?.isPermanentlyDenied ?? false;
+
+      if (scanPermanentlyDenied || connectPermanentlyDenied) {
+        if (mounted) {
+          _showSettingsDialog();
+        }
+        return;
+      }
+
+      if (allGranted) {
         _startScan();
       } else {
         if (mounted) {
           ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(
+            const SnackBar(
               content: Text(AppStrings.permissionsDenied),
               behavior: SnackBarBehavior.floating,
             ),
@@ -75,12 +89,35 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
     }
   }
 
+  void _showSettingsDialog() {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text("Permissões Necessárias"),
+        content: const Text("As permissões de Bluetooth foram negadas permanentemente. Por favor, habilite-as nas configurações do sistema para continuar."),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: const Text("CANCELAR"),
+          ),
+          TextButton(
+            onPressed: () {
+              openAppSettings();
+              Navigator.pop(context);
+            },
+            child: const Text("CONFIGURAÇÕES"),
+          ),
+        ],
+      ),
+    );
+  }
+
   Future<void> _startScan() async {
     try {
       if (await FlutterBluePlus.adapterState.first != BluetoothAdapterState.on) {
         if (mounted) {
           ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(
+            const SnackBar(
               content: Text(AppStrings.turnOnBluetooth),
               behavior: SnackBarBehavior.floating,
             ),
@@ -89,7 +126,9 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
         return;
       }
 
-      await FlutterBluePlus.startScan(timeout: const Duration(seconds: 15));
+      await FlutterBluePlus.startScan(
+        timeout: const Duration(seconds: 15),
+      );
     } catch (e) {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
@@ -135,7 +174,7 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
         });
         FlutterBluePlus.stopScan();
         ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(
+          const SnackBar(
             content: Text(AppStrings.connectedSuccess),
             backgroundColor: AppColors.success,
             behavior: SnackBarBehavior.floating,
@@ -190,7 +229,6 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
           Column(
             children: [
               const SizedBox(height: 20),
-              // Header Card
               Padding(
                 padding: const EdgeInsets.symmetric(horizontal: 25),
                 child: Container(
@@ -282,7 +320,6 @@ class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
                 ),
               ),
               const SizedBox(height: 30),
-              // Device List
               Expanded(
                 child: ListView.builder(
                   itemCount: _connectedDevice != null ? 1 : _scanResults.length,