Add MIUI device detection and warning for accessibility service

Co-authored-by: jonasbark <1151304+jonasbark@users.noreply.github.com>

lib/utils/requirements/android.dart

@@ -1,11 +1,14 @@
 import 'dart:io';
 
+import 'package:device_info_plus/device_info_plus.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:swift_control/main.dart';
 import 'package:swift_control/utils/requirements/platform.dart';
 import 'package:swift_control/widgets/accessibility_disclosure_dialog.dart';
+import 'package:swift_control/widgets/warning.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 class AccessibilityRequirement extends PlatformRequirement {
   AccessibilityRequirement()
@@ -169,3 +172,124 @@ void notificationTapBackground(NotificationResponse notificationResponse) {
     });
   }
 }
+
+class MiuiWarningRequirement extends PlatformRequirement {
+  static bool? _isMiui;
+
+  MiuiWarningRequirement()
+    : super(
+        'MIUI Battery Optimization Warning',
+        description: 'MIUI devices may kill the accessibility service. Please disable battery optimization.',
+      );
+
+  static Future<bool> isMiuiDevice() async {
+    if (_isMiui != null) return _isMiui!;
+    
+    try {
+      final deviceInfo = await DeviceInfoPlugin().androidInfo;
+      // Check if manufacturer is Xiaomi or if it's running MIUI
+      _isMiui = deviceInfo.manufacturer.toLowerCase() == 'xiaomi' ||
+                deviceInfo.brand.toLowerCase() == 'xiaomi' ||
+                deviceInfo.brand.toLowerCase() == 'redmi' ||
+                deviceInfo.brand.toLowerCase() == 'poco';
+      return _isMiui!;
+    } catch (e) {
+      _isMiui = false;
+      return false;
+    }
+  }
+
+  @override
+  Future<void> call(BuildContext context, VoidCallback onUpdate) async {
+    // This is an informational requirement, no action needed
+  }
+
+  @override
+  Future<void> getStatus() async {
+    // This is always "complete" - it's just a warning
+    status = true;
+  }
+
+  @override
+  Widget? build(BuildContext context, VoidCallback onUpdate) {
+    return Warning(
+      children: [
+        Row(
+          children: [
+            Icon(Icons.warning_amber, color: Theme.of(context).colorScheme.error),
+            SizedBox(width: 8),
+            Expanded(
+              child: Text(
+                'MIUI Device Detected',
+                style: TextStyle(
+                  fontWeight: FontWeight.bold,
+                  color: Theme.of(context).colorScheme.error,
+                ),
+              ),
+            ),
+          ],
+        ),
+        SizedBox(height: 8),
+        Text(
+          'Your device is running MIUI, which is known to aggressively kill background services and accessibility services.',
+          style: TextStyle(fontSize: 14),
+        ),
+        SizedBox(height: 8),
+        Text(
+          'To ensure SwiftControl works properly:',
+          style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600),
+        ),
+        Text(
+          '• Disable battery optimization for SwiftControl',
+          style: TextStyle(fontSize: 14),
+        ),
+        Text(
+          '• Enable autostart for SwiftControl',
+          style: TextStyle(fontSize: 14),
+        ),
+        Text(
+          '• Lock the app in recent apps',
+          style: TextStyle(fontSize: 14),
+        ),
+        SizedBox(height: 12),
+        ElevatedButton.icon(
+          onPressed: () async {
+            final url = Uri.parse('https://dontkillmyapp.com/xiaomi');
+            if (await canLaunchUrl(url)) {
+              await launchUrl(url, mode: LaunchMode.externalApplication);
+            }
+          },
+          icon: Icon(Icons.open_in_new),
+          label: Text('View Detailed Instructions'),
+          style: ElevatedButton.styleFrom(
+            backgroundColor: Theme.of(context).colorScheme.errorContainer,
+            foregroundColor: Theme.of(context).colorScheme.onErrorContainer,
+          ),
+        ),
+        SizedBox(height: 8),
+        ElevatedButton(
+          onPressed: () {
+            onUpdate();
+          },
+          child: Text('I understand, continue'),
+        ),
+      ],
+    );
+  }
+
+  @override
+  Widget? buildDescription() {
+    return Row(
+      children: [
+        Icon(Icons.info_outline, size: 16, color: Colors.orange),
+        SizedBox(width: 4),
+        Expanded(
+          child: Text(
+            'Please review the battery optimization settings',
+            style: TextStyle(color: Colors.orange),
+          ),
+        ),
+      ],
+    );
+  }
+}

lib/utils/requirements/platform.dart

@@ -71,6 +71,7 @@ Future<List<PlatformRequirement>> getRequirements(ConnectionType connectionType)
   } else if (Platform.isAndroid) {
     final deviceInfoPlugin = DeviceInfoPlugin();
     final deviceInfo = await deviceInfoPlugin.androidInfo;
+    final isMiui = await MiuiWarningRequirement.isMiuiDevice();
     list = [
       TargetRequirement(),
       BluetoothTurnedOn(),
@@ -81,6 +82,8 @@ Future<List<PlatformRequirement>> getRequirements(ConnectionType connectionType)
         BluetoothScanRequirement(),
         BluetoothConnectRequirement(),
       ],
+      if (isMiui && connectionType == ConnectionType.local)
+        MiuiWarningRequirement(),
       switch (connectionType) {
         ConnectionType.local => AccessibilityRequirement(),
         ConnectionType.remote => RemoteRequirement(),